// -*- C++ -*- // $Id$ #include "ace/OS_NS_Thread.h" ACE_RCSID(ace, OS_NS_Thread, "$Id$") #if !defined (ACE_HAS_INLINED_OSCALLS) # include "ace/OS_NS_Thread.inl" #endif /* ACE_HAS_INLINED_OS_CALLS */ #include "ace/OS_NS_stdio.h" #include "ace/Sched_Params.h" #include "ace/OS_Memory.h" #include "ace/OS_Thread_Adapter.h" #include "ace/Min_Max.h" #include "ace/OS_NS_errno.h" // This is necessary to work around nasty problems with MVS C++. extern "C" void ace_mutex_lock_cleanup_adapter (void *args) { ACE_OS::mutex_lock_cleanup (args); } #if !defined(ACE_WIN32) && defined (__IBMCPP__) && (__IBMCPP__ >= 400) # define ACE_BEGINTHREADEX(STACK, STACKSIZE, ENTRY_POINT, ARGS, FLAGS, THR_ID) \ (*THR_ID = ::_beginthreadex ((void(_Optlink*)(void*))ENTRY_POINT, STACK, STACKSIZE, ARGS), *THR_ID) #elif defined(ACE_WIN32) && defined (__IBMCPP__) && (__IBMCPP__ >= 400) struct __IBMCPP__thread_params { __IBMCPP__thread_params(ACE_THR_C_FUNC e, LPVOID a) :entry_point(e),args(a) {} ACE_THR_C_FUNC entry_point; LPVOID args; }; # pragma handler(initThread) extern "C" DWORD __stdcall __IBMCPP__initThread(void *arg) { // Must reset 387 since using CreateThread _fpreset(); // Dispatch user function... auto_ptr<__IBMCPP__thread_params> parms((__IBMCPP__thread_params *)arg); (*parms->entry_point)(parms->args); _endthread(); return 0; } HANDLE WINAPI __IBMCPP__beginthreadex(void *stack, DWORD stacksize, ACE_THR_C_FUNC entry_point, LPVOID args, DWORD flags, LPDWORD thr_id) { return CreateThread(0, stacksize, (LPTHREAD_START_ROUTINE)__IBMCPP__initThread, new __IBMCPP__thread_params(entry_point, args), flags, thr_id); } # define ACE_BEGINTHREADEX(STACK, STACKSIZE, ENTRY_POINT, ARGS, FLAGS, THR_ID) \ __IBMCPP__beginthreadex(STACK, STACKSIZE, ENTRY_POINT, ARGS, FLAGS, THR_ID) #elif defined (ACE_HAS_WINCE) && defined (UNDER_CE) && (UNDER_CE >= 211) # define ACE_BEGINTHREADEX(STACK, STACKSIZE, ENTRY_POINT, ARGS, FLAGS, THR_ID) \ CreateThread (0, STACKSIZE, (unsigned long (__stdcall *) (void *)) ENTRY_POINT, ARGS, (FLAGS) & CREATE_SUSPENDED, (unsigned long *) THR_ID) #elif defined(ACE_HAS_WTHREADS) // Green Hills compiler gets confused when __stdcall is imbedded in // parameter list, so we define the type ACE_WIN32THRFUNC_T and use it // instead. typedef unsigned (__stdcall *ACE_WIN32THRFUNC_T)(void*); # define ACE_BEGINTHREADEX(STACK, STACKSIZE, ENTRY_POINT, ARGS, FLAGS, THR_ID) \ ::_beginthreadex (STACK, STACKSIZE, (ACE_WIN32THRFUNC_T) ENTRY_POINT, ARGS, FLAGS, (unsigned int *) THR_ID) #endif /* defined (__IBMCPP__) && (__IBMCPP__ >= 400) */ /*****************************************************************************/ ACE_Thread_ID::ACE_Thread_ID (ACE_thread_t thread_id, ACE_hthread_t thread_handle) : thread_id_ (thread_id), thread_handle_ (thread_handle) { } ACE_Thread_ID::ACE_Thread_ID (const ACE_Thread_ID &id) : thread_id_ (id.thread_id_), thread_handle_ (id.thread_handle_) { } ACE_thread_t ACE_Thread_ID::id (void) { return this->thread_id_; } void ACE_Thread_ID::id (ACE_thread_t thread_id) { this->thread_id_ = thread_id; } ACE_hthread_t ACE_Thread_ID::handle (void) { return this->thread_handle_; } void ACE_Thread_ID::handle (ACE_hthread_t thread_handle) { this->thread_handle_ = thread_handle; } void ACE_Thread_ID::to_string (char* thr_id) { char format[128]; // Converted format string char *fp; // Current format pointer fp = format; *fp++ = '%'; // Copy in the % #if defined (ACE_WIN32) ACE_OS::strcpy (fp, "u"); ACE_OS::sprintf (thr_id, format, ACE_static_cast(unsigned, ACE_OS::thr_self ())); #elif defined (ACE_AIX_VERS) && (ACE_AIX_VERS <= 402) // AIX's pthread_t (ACE_hthread_t) is a pointer, and it's // a little ugly to send that through a %u format. So, // get the kernel thread ID (tid_t) via thread_self() and // display that instead. // This isn't conditionalized on ACE_HAS_THREAD_SELF because // 1. AIX 4.2 doesn't have that def anymore (it messes up // other things) // 2. OSF/1 V3.2 has that def, and I'm not sure what affect // this would have on that. // -Steve Huston, 19-Aug-97 ACE_OS::strcpy (fp, "u"); ACE_OS::sprintf (thr_id, format, thread_self()); #elif defined (DIGITAL_UNIX) ACE_OS::strcpy (fp, "u"); ACE_OS::sprintf (thr_id, format, # if defined (ACE_HAS_THREADS) pthread_getselfseq_np () # else ACE_Thread::self () # endif /* ACE_HAS_THREADS */ ); #else ACE_hthread_t t_id; ACE_OS::thr_self (t_id); # if defined (ACE_HAS_PTHREADS_DRAFT4) && defined (HPUX_10) ACE_OS::strcpy (fp, "u"); // HP-UX 10.x DCE's thread ID is a pointer. Grab the // more meaningful, readable, thread ID. This will match // the one seen in the debugger as well. ACE_OS::sprintf (thr_id, format, pthread_getunique_np(&t_id)); # elif defined (ACE_MVS) // MVS's pthread_t is a struct... yuck. So use the ACE 5.0 // code for it. ACE_OS::strcpy (fp, "u"); ACE_OS::sprintf (thr_id, format, t_id); # else // Yes, this is an ugly C-style cast, but the correct // C++ cast is different depending on whether the t_id // is an integral type or a pointer type. FreeBSD uses // a pointer type, but doesn't have a _np function to // get an integral type, like the OSes above. ACE_OS::strcpy (fp, "lu"); ACE_OS::sprintf (thr_id, format, (unsigned long)t_id); # endif /* ACE_HAS_PTHREADS_DRAFT4 && HPUX_10 */ #endif /* ACE_WIN32 */ } int ACE_Thread_ID::operator== (const ACE_Thread_ID &rhs) const { return ACE_OS::thr_cmp (this->thread_handle_, rhs.thread_handle_) == 0 && ACE_OS::thr_equal (this->thread_id_, rhs.thread_id_) == 0; } int ACE_Thread_ID::operator!= (const ACE_Thread_ID &rhs) const { return !(*this == rhs); } /*****************************************************************************/ #if defined (ACE_WIN32) || defined (ACE_HAS_TSS_EMULATION) || (defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS)) #if defined (ACE_HAS_TSS_EMULATION) u_int ACE_TSS_Emulation::total_keys_ = 0; ACE_TSS_Keys ACE_TSS_Emulation::tss_keys_used_; ACE_TSS_Emulation::ACE_TSS_DESTRUCTOR ACE_TSS_Emulation::tss_destructor_[ACE_TSS_Emulation::ACE_TSS_THREAD_KEYS_MAX] = { 0 }; # if defined (ACE_HAS_THREAD_SPECIFIC_STORAGE) int ACE_TSS_Emulation::key_created_ = 0; ACE_OS_thread_key_t ACE_TSS_Emulation::native_tss_key_; /* static */ # if defined (ACE_HAS_THR_C_FUNC) extern "C" void ACE_TSS_Emulation_cleanup (void *ptr) { ACE_UNUSED_ARG (ptr); // Really this must be used for ACE_TSS_Emulation code to make the TSS // cleanup } # else void ACE_TSS_Emulation_cleanup (void *ptr) { ACE_UNUSED_ARG (ptr); // Really this must be used for ACE_TSS_Emulation code to make the TSS // cleanup } # endif /* ACE_HAS_THR_C_FUNC */ void ** ACE_TSS_Emulation::tss_base (void* ts_storage[], u_int *ts_created) { // TSS Singleton implementation. // Create the one native TSS key, if necessary. if (key_created_ == 0) { // Double-checked lock . . . ACE_TSS_BASE_GUARD if (key_created_ == 0) { ACE_NO_HEAP_CHECK; if (ACE_OS::thr_keycreate (&native_tss_key_, &ACE_TSS_Emulation_cleanup) != 0) { return 0; // Major problems, this should *never* happen! } key_created_ = 1; } } void **old_ts_storage = 0; // Get the tss_storage from thread-OS specific storage. if (ACE_OS::thr_getspecific (native_tss_key_, (void **) &old_ts_storage) == -1) return 0; // This should not happen! // Check to see if this is the first time in for this thread. // This block can also be entered after a fork () in the child process, // at least on Pthreads Draft 4 platforms. if (old_ts_storage == 0) { if (ts_created) *ts_created = 1u; // Use the ts_storage passed as argument, if non-zero. It is // possible that this has been implemented in the stack. At the // moment, this is unknown. The cleanup must not do nothing. // If ts_storage is zero, allocate (and eventually leak) the // storage array. if (ts_storage == 0) { ACE_NO_HEAP_CHECK; ACE_NEW_RETURN (ts_storage, void*[ACE_TSS_THREAD_KEYS_MAX], 0); // Zero the entire TSS array. Do it manually instead of // using memset, for optimum speed. Though, memset may be // faster :-) void **tss_base_p = ts_storage; for (u_int i = 0; i < ACE_TSS_THREAD_KEYS_MAX; ++i) *tss_base_p++ = 0; } // Store the pointer in thread-specific storage. It gets // deleted via the ACE_TSS_Emulation_cleanup function when the // thread terminates. if (ACE_OS::thr_setspecific (native_tss_key_, (void *) ts_storage) != 0) return 0; // Major problems, this should *never* happen! } else if (ts_created) ts_created = 0; return ts_storage ? ts_storage : old_ts_storage; } # endif /* ACE_HAS_THREAD_SPECIFIC_STORAGE */ u_int ACE_TSS_Emulation::total_keys () { ACE_OS_Recursive_Thread_Mutex_Guard ( *ACE_static_cast (ACE_recursive_thread_mutex_t *, ACE_OS_Object_Manager::preallocated_object[ ACE_OS_Object_Manager::ACE_TSS_KEY_LOCK])); return total_keys_; } int ACE_TSS_Emulation::next_key (ACE_thread_key_t &key) { ACE_OS_Recursive_Thread_Mutex_Guard ( *ACE_static_cast (ACE_recursive_thread_mutex_t *, ACE_OS_Object_Manager::preallocated_object[ ACE_OS_Object_Manager::ACE_TSS_KEY_LOCK])); if (total_keys_ < ACE_TSS_THREAD_KEYS_MAX) { u_int counter = 0; // Loop through all possible keys and check whether a key is free for ( ;counter < ACE_TSS_THREAD_KEYS_MAX; counter++) { ACE_thread_key_t localkey; # if defined (ACE_HAS_NONSCALAR_THREAD_KEY_T) ACE_OS::memset (&localkey, 0, sizeof (ACE_thread_key_t)); ACE_OS::memcpy (&localkey, &counter_, sizeof (u_int)); # else localkey = counter; # endif /* ACE_HAS_NONSCALAR_THREAD_KEY_T */ // If the key is not set as used, we can give out this key, if not // we have to search further if (tss_keys_used_.is_set(localkey) == 0) { tss_keys_used_.test_and_set(localkey); key = localkey; break; } } ++total_keys_; return 0; } else { key = ACE_OS::NULL_key; return -1; } } int ACE_TSS_Emulation::release_key (ACE_thread_key_t key) { ACE_OS_Recursive_Thread_Mutex_Guard ( *ACE_static_cast (ACE_recursive_thread_mutex_t *, ACE_OS_Object_Manager::preallocated_object[ ACE_OS_Object_Manager::ACE_TSS_KEY_LOCK])); if (tss_keys_used_.test_and_clear (key) == 0) { --total_keys_; return 0; } return 1; } void * ACE_TSS_Emulation::tss_open (void *ts_storage[ACE_TSS_THREAD_KEYS_MAX]) { # if defined (ACE_PSOS) u_long tss_base; // Use the supplied array for this thread's TSS. tss_base = (u_long) ts_storage; t_setreg (0, PSOS_TASK_REG_TSS, tss_base); // Zero the entire TSS array. void **tss_base_p = ts_storage; for (u_int i = 0; i < ACE_TSS_THREAD_KEYS_MAX; ++i, ++tss_base_p) { *tss_base_p = 0; } return (void *) tss_base; # else /* ! ACE_PSOS */ # if defined (ACE_HAS_THREAD_SPECIFIC_STORAGE) // On VxWorks, in particular, don't check to see if the field // is 0. It isn't always, specifically, when a program is run // directly by the shell (without spawning a new task) after // another program has been run. u_int ts_created = 0; tss_base (ts_storage, &ts_created); if (ts_created) { # else /* ! ACE_HAS_THREAD_SPECIFIC_STORAGE */ tss_base () = ts_storage; # endif // Zero the entire TSS array. Do it manually instead of using // memset, for optimum speed. Though, memset may be faster :-) void **tss_base_p = tss_base (); for (u_int i = 0; i < ACE_TSS_THREAD_KEYS_MAX; ++i, ++tss_base_p) { *tss_base_p = 0; } return tss_base (); # if defined (ACE_HAS_THREAD_SPECIFIC_STORAGE) } else { return 0; } # endif /* ACE_HAS_THREAD_SPECIFIC_STORAGE */ # endif /* ! ACE_PSOS */ } void ACE_TSS_Emulation::tss_close () { # if defined (ACE_HAS_THREAD_SPECIFIC_STORAGE) // Free native_tss_key_ here. # endif /* ACE_HAS_THREAD_SPECIFIC_STORAGE */ } #endif /* ACE_HAS_TSS_EMULATION */ #endif /* WIN32 || ACE_HAS_TSS_EMULATION */ /*****************************************************************************/ #if defined (ACE_WIN32) || defined (ACE_HAS_TSS_EMULATION) || (defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS)) // Moved class ACE_TSS_Ref declaration to OS.h so it can be visible to // the single file of template instantiations. ACE_TSS_Ref::ACE_TSS_Ref (ACE_thread_t id) : tid_(id) { ACE_OS_TRACE ("ACE_TSS_Ref::ACE_TSS_Ref"); } ACE_TSS_Ref::ACE_TSS_Ref (void) { ACE_OS_TRACE ("ACE_TSS_Ref::ACE_TSS_Ref"); } // Check for equality. int ACE_TSS_Ref::operator== (const ACE_TSS_Ref &info) const { ACE_OS_TRACE ("ACE_TSS_Ref::operator=="); return this->tid_ == info.tid_; } // Check for inequality. ACE_SPECIAL_INLINE int ACE_TSS_Ref::operator != (const ACE_TSS_Ref &tss_ref) const { ACE_OS_TRACE ("ACE_TSS_Ref::operator !="); return !(*this == tss_ref); } // moved class ACE_TSS_Info declaration // to OS.h so it can be visible to the // single file of template instantiations ACE_TSS_Info::ACE_TSS_Info (ACE_thread_key_t key, void (*dest)(void *), void *tss_inst) : key_ (key), destructor_ (dest), tss_obj_ (tss_inst), thread_count_ (-1) { ACE_OS_TRACE ("ACE_TSS_Info::ACE_TSS_Info"); } ACE_TSS_Info::ACE_TSS_Info (void) : key_ (ACE_OS::NULL_key), destructor_ (0), tss_obj_ (0), thread_count_ (-1) { ACE_OS_TRACE ("ACE_TSS_Info::ACE_TSS_Info"); } # if defined (ACE_HAS_NONSCALAR_THREAD_KEY_T) static inline int operator== (const ACE_thread_key_t &lhs, const ACE_thread_key_t &rhs) { return ! ACE_OS::memcmp (&lhs, &rhs, sizeof (ACE_thread_key_t)); } static inline int operator!= (const ACE_thread_key_t &lhs, const ACE_thread_key_t &rhs) { return ! (lhs == rhs); } # endif /* ACE_HAS_NONSCALAR_THREAD_KEY_T */ // Check for equality. int ACE_TSS_Info::operator== (const ACE_TSS_Info &info) const { ACE_OS_TRACE ("ACE_TSS_Info::operator=="); return this->key_ == info.key_; } // Check for inequality. int ACE_TSS_Info::operator != (const ACE_TSS_Info &info) const { ACE_OS_TRACE ("ACE_TSS_Info::operator !="); return !(*this == info); } void ACE_TSS_Info::dump (void) { # if defined (ACE_HAS_DUMP) // ACE_OS_TRACE ("ACE_TSS_Info::dump"); # if 0 ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this)); ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("key_ = %u\n"), this->key_)); ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("destructor_ = %u\n"), this->destructor_)); ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("tss_obj_ = %u\n"), this->tss_obj_)); ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP)); # endif /* 0 */ # endif /* ACE_HAS_DUMP */ } // Moved class ACE_TSS_Keys declaration to OS.h so it can be visible // to the single file of template instantiations. ACE_TSS_Keys::ACE_TSS_Keys (void) { for (u_int i = 0; i < ACE_WORDS; ++i) { key_bit_words_[i] = 0; } } ACE_SPECIAL_INLINE void ACE_TSS_Keys::find (const u_int key, u_int &word, u_int &bit) { word = key / ACE_BITS_PER_WORD; bit = key % ACE_BITS_PER_WORD; } int ACE_TSS_Keys::test_and_set (const ACE_thread_key_t key) { ACE_KEY_INDEX (key_index, key); u_int word, bit; find (key_index, word, bit); if (ACE_BIT_ENABLED (key_bit_words_[word], 1 << bit)) { return 1; } else { ACE_SET_BITS (key_bit_words_[word], 1 << bit); return 0; } } int ACE_TSS_Keys::test_and_clear (const ACE_thread_key_t key) { ACE_KEY_INDEX (key_index, key); u_int word, bit; find (key_index, word, bit); if (ACE_BIT_ENABLED (key_bit_words_[word], 1 << bit)) { ACE_CLR_BITS (key_bit_words_[word], 1 << bit); return 0; } else { return 1; } } int ACE_TSS_Keys::is_set (const ACE_thread_key_t key) const { ACE_KEY_INDEX (key_index, key); u_int word, bit; find (key_index, word, bit); return ACE_BIT_ENABLED (key_bit_words_[word], 1 << bit); } /*****************************************************************************/ /** * @class ACE_TSS_Cleanup * * @brief Singleton that knows how to clean up all the thread-specific * resources for Win32. * * All this nonsense is required since Win32 doesn't * automatically cleanup thread-specific storage on thread exit, * unlike real operating systems... ;-) */ class ACE_TSS_Cleanup { public: static ACE_TSS_Cleanup *instance (void); ~ACE_TSS_Cleanup (void); /// Cleanup the thread-specific objects. Does _NOT_ exit the thread. void exit (void *status); /// Insert a tuple into the table. int insert (ACE_thread_key_t key, void (*destructor)(void *), void *inst); /// Remove a tuple from the table. int remove (ACE_thread_key_t key); /// Detaches a tss_instance from its key. int detach (void *inst); /// Mark a key as being used by this thread. void key_used (ACE_thread_key_t key); /// Free all keys left in the table before destruction. int free_all_keys_left (void); /// Indication of whether the ACE_TSS_CLEANUP_LOCK is usable, and /// therefore whether we are in static constructor/destructor phase /// or not. static int lockable () { return instance_ != 0; } protected: void dump (void); /// Ensure singleton. ACE_TSS_Cleanup (void); private: // Array of objects. typedef ACE_TSS_Info ACE_TSS_TABLE[ACE_DEFAULT_THREAD_KEYS]; typedef ACE_TSS_Info *ACE_TSS_TABLE_ITERATOR; /// Table of 's. ACE_TSS_TABLE table_; /// Key for the thread-specific array of whether each TSS key is in use. ACE_thread_key_t in_use_; /// Accessor for this threads ACE_TSS_Keys instance. ACE_TSS_Keys *tss_keys (); # if defined (ACE_HAS_TSS_EMULATION) /// Key that is used by in_use_. We save this key so that we know /// not to call its destructor in free_all_keys_left (). ACE_thread_key_t in_use_key_; # endif /* ACE_HAS_TSS_EMULATION */ // = Static data. /// Pointer to the singleton instance. static ACE_TSS_Cleanup *instance_; }; // = Static object initialization. // Pointer to the singleton instance. ACE_TSS_Cleanup *ACE_TSS_Cleanup::instance_ = 0; ACE_TSS_Cleanup::~ACE_TSS_Cleanup (void) { // Zero out the instance pointer to support lockable () accessor. ACE_TSS_Cleanup::instance_ = 0; } void ACE_TSS_Cleanup::exit (void * /* status */) { ACE_OS_TRACE ("ACE_TSS_Cleanup::exit"); ACE_TSS_TABLE_ITERATOR key_info = table_; ACE_TSS_Info info_arr[ACE_DEFAULT_THREAD_KEYS]; int info_ix = 0; // While holding the lock, we only collect the ACE_TSS_Info objects // in an array without invoking the according destructors. { ACE_TSS_CLEANUP_GUARD // Iterate through all the thread-specific items and free them all // up. for (unsigned int i = 0; i < ACE_DEFAULT_THREAD_KEYS; ++key_info, ++i) { if (key_info->key_ == ACE_OS::NULL_key || ! key_info->key_in_use ()) continue; // If the key's ACE_TSS_Info in-use bit for this thread was set, // unset it and decrement the key's thread_count_. if (! tss_keys ()->test_and_clear (key_info->key_)) { --key_info->thread_count_; } void *tss_info = 0; if (key_info->destructor_ && ACE_OS::thr_getspecific (key_info->key_, &tss_info) == 0 && tss_info) { info_arr[info_ix].key_ = key_info->key_; info_arr[info_ix].destructor_ = key_info->destructor_; info_arr[info_ix++].tss_obj_ = key_info->tss_obj_; } } } // Now we have given up the ACE_TSS_Cleanup::lock_ and we start // invoking destructors, in the reverse order of creation. for (int i = info_ix - 1; i >= 0; --i) { void *tss_info = 0; ACE_OS::thr_getspecific (info_arr[i].key_, &tss_info); if (tss_info != 0) { // Only call the destructor if the value is non-zero for this // thread. (*info_arr[i].destructor_)(tss_info); } } // Acquire the ACE_TSS_CLEANUP_LOCK, then free TLS keys and remove // entries from ACE_TSS_Info table. { ACE_TSS_CLEANUP_GUARD # if 0 // We shouldn't free the key and remove it from the table here // because if we do and some thread ends before other threads // even get started (or their TSS object haven't been created yet,) // it's entry will be removed from the table and we are in big chaos. // For TSS object, these have been done in ACE_TSS_Cleanup::detach. // Two other use cases will be user managed TSS'es and system wide // TSS, ones are users responsibilities and the others should be // persistant system wide. for (int i = 0; i < index; i++) { # if defined (ACE_WIN32) || (defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS)) // Calling thr_keyfree here ensure the key // gets removed appropriately. Notice that // a key should be removed before freeing it. ACE_OS::thr_keyfree (key_info->key_); # else // don't bother to free the key this->remove (key_info->key_); # endif /* ACE_WIN32 */ } # endif /* 0 */ } } int ACE_TSS_Cleanup::free_all_keys_left (void) // This is called from ACE_OS::cleanup_tss (). When this gets // called, all threads should have exited except the main thread. // No key should be freed from this routine. It there's any, // something might be wrong. { ACE_thread_key_t key_arr[ACE_DEFAULT_THREAD_KEYS]; ACE_TSS_TABLE_ITERATOR key_info = table_; unsigned int idx = 0; unsigned int i; for (i = 0; i < ACE_DEFAULT_THREAD_KEYS; ++key_info, ++i) # if defined (ACE_HAS_TSS_EMULATION) if (key_info->key_ != in_use_key_) # endif /* ACE_HAS_TSS_EMULATION */ // Don't call ACE_OS::thr_keyfree () on ACE_TSS_Cleanup's own // key. See the comments in ACE_OS::thr_key_detach (): the key // doesn't get detached, so it will be in the table here. // However, there's no resource associated with it, so we don't // need to keyfree it. The dynamic memory associated with it // was already deleted by ACE_TSS_Cleanup::exit (), so we don't // want to access it again. key_arr [idx++] = key_info->key_; for (i = 0; i < idx; i++) if (key_arr[i] != ACE_OS::NULL_key) # if defined (ACE_HAS_TSS_EMULATION) ACE_OS::thr_keyfree (key_arr[i]); # elif defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS) // Don't call ACE_OS::thr_keyfree here. It will try to use // which has already been cleaned up here. ::tsd_delete (key_arr[i]); # else /* ACE_WIN32 */ // Don't call ACE_OS::thr_keyfree here. It will try to use // which has already been cleaned up here. TlsFree (key_arr[i]); # endif /* ACE_HAS_TSS_EMULATION */ return 0; } extern "C" void ACE_TSS_Cleanup_keys_destroyer (void *tss_keys) { delete ACE_reinterpret_cast (ACE_TSS_Keys *, tss_keys); } ACE_TSS_Cleanup::ACE_TSS_Cleanup (void) : in_use_ (ACE_OS::NULL_key) # if defined (ACE_HAS_TSS_EMULATION) // ACE_TSS_Emulation::total_keys () provides the value of the next // key to be created. , in_use_key_ (ACE_TSS_Emulation::total_keys ()) # endif /* ACE_HAS_TSS_EMULATION */ { ACE_OS_TRACE ("ACE_TSS_Cleanup::ACE_TSS_Cleanup"); } ACE_TSS_Cleanup * ACE_TSS_Cleanup::instance (void) { ACE_OS_TRACE ("ACE_TSS_Cleanup::instance"); // Create and initialize thread-specific key. if (ACE_TSS_Cleanup::instance_ == 0) { // Insure that we are serialized! ACE_TSS_CLEANUP_GUARD // Now, use the Double-Checked Locking pattern to make sure we // only create the ACE_TSS_Cleanup instance once. if (ACE_TSS_Cleanup::instance_ == 0) ACE_NEW_RETURN (ACE_TSS_Cleanup::instance_, ACE_TSS_Cleanup, 0); } return ACE_TSS_Cleanup::instance_; } int ACE_TSS_Cleanup::insert (ACE_thread_key_t key, void (*destructor)(void *), void *inst) { ACE_OS_TRACE ("ACE_TSS_Cleanup::insert"); ACE_TSS_CLEANUP_GUARD ACE_KEY_INDEX (key_index, key); if (key_index < ACE_DEFAULT_THREAD_KEYS) { table_[key_index] = ACE_TSS_Info (key, destructor, inst); return 0; } else { return -1; } } int ACE_TSS_Cleanup::remove (ACE_thread_key_t key) { ACE_OS_TRACE ("ACE_TSS_Cleanup::remove"); ACE_TSS_CLEANUP_GUARD ACE_KEY_INDEX (key_index, key); if (key_index < ACE_DEFAULT_THREAD_KEYS) { // "Remove" the TSS_Info table entry by zeroing out its key_ and // destructor_ fields. Also, keep track of the number threads // using the key. ACE_TSS_Info &info = this->table_ [key_index]; // Don't bother to test/clear the in "use bit" if the program is // shutting down. Doing so will cause a new ACE_TSS object to be // created again. if (!ACE_OS_Object_Manager::shutting_down ()) tss_keys ()->test_and_clear (info.key_); info.key_in_use (0); info.key_ = ACE_OS::NULL_key; info.destructor_ = 0; return 0; } else return -1; } int ACE_TSS_Cleanup::detach (void *inst) { ACE_TSS_CLEANUP_GUARD ACE_TSS_TABLE_ITERATOR key_info = table_; int success = 0; int ref_cnt = 0; // Mark the key as detached in the TSS_Info table. // It only works for the first key that "inst" owns. // I don't know why. for (unsigned int i = 0; i < ACE_DEFAULT_THREAD_KEYS; ++key_info, ++i) { if (key_info->tss_obj_ == inst) { key_info->tss_obj_ = 0; ref_cnt = --key_info->thread_count_; success = 1; break; } } if (success == 0) return -1; else if (ref_cnt == 0) { // Mark the key as no longer being used. key_info->key_in_use (0); # if defined (ACE_WIN32) || (defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS)) ACE_thread_key_t temp_key = key_info->key_; # endif /* ACE_WIN32 */ int retv = this->remove (key_info->key_); # if defined (ACE_WIN32) ::TlsFree (temp_key); # elif defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS) ::tsd_delete (temp_key); # endif /* ACE_WIN32 */ return retv; } return 0; } void ACE_TSS_Cleanup::key_used (ACE_thread_key_t key) { // If the key's ACE_TSS_Info in-use bit for this thread is not set, // set it and increment the key's thread_count_. if (! tss_keys ()->test_and_set (key)) { ACE_TSS_CLEANUP_GUARD // Retrieve the key's ACE_TSS_Info and increment its thread_count_. ACE_KEY_INDEX (key_index, key); ACE_TSS_Info &key_info = this->table_ [key_index]; if (!key_info.key_in_use ()) key_info.key_in_use (1); else ++key_info.thread_count_; } } void ACE_TSS_Cleanup::dump (void) { # if defined (ACE_HAS_DUMP) // Iterate through all the thread-specific items and dump them all. ACE_TSS_TABLE_ITERATOR key_info = table_; for (unsigned int i = 0; i < ACE_DEFAULT_THREAD_KEYS; ++key_info, ++i) key_info->dump (); # endif /* ACE_HAS_DUMP */ } ACE_TSS_Keys * ACE_TSS_Cleanup::tss_keys () { if (in_use_ == ACE_OS::NULL_key) { ACE_TSS_CLEANUP_GUARD // Double-check; if (in_use_ == ACE_OS::NULL_key) { // Initialize in_use_ with a new key. if (ACE_OS::thr_keycreate (&in_use_, &ACE_TSS_Cleanup_keys_destroyer)) return 0; // Major problems, this should *never* happen! } } ACE_TSS_Keys *ts_keys = 0; if (ACE_OS::thr_getspecific (in_use_, ACE_reinterpret_cast (void **, &ts_keys)) == -1) return 0; // This should not happen! if (ts_keys == 0) { ACE_NEW_RETURN (ts_keys, ACE_TSS_Keys, 0); // Store the dynamically allocated pointer in thread-specific // storage. if (ACE_OS::thr_setspecific (in_use_, ACE_reinterpret_cast (void *, ts_keys)) == -1) { delete ts_keys; return 0; // Major problems, this should *never* happen! } } return ts_keys; } #endif /* ACE_WIN32 || ACE_HAS_TSS_EMULATION || (ACE_PSOS && ACE_PSOS_HAS_TSS) */ /*****************************************************************************/ // = Static initialization. // This is necessary to deal with POSIX pthreads insanity. This // guarantees that we've got a "zero'd" thread id even when // ACE_thread_t, ACE_hthread_t, and ACE_thread_key_t are implemented // as structures... Under no circumstances should these be given // initial values. // Note: these three objects require static construction. ACE_thread_t ACE_OS::NULL_thread; ACE_hthread_t ACE_OS::NULL_hthread; #if defined (ACE_HAS_TSS_EMULATION) || (defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS)) ACE_thread_key_t ACE_OS::NULL_key = ACE_static_cast (ACE_thread_key_t, -1); #else /* ! ACE_HAS_TSS_EMULATION */ ACE_thread_key_t ACE_OS::NULL_key; #endif /* ! ACE_HAS_TSS_EMULATION */ #if defined (CHORUS) KnCap ACE_OS::actorcaps_[ACE_CHORUS_MAX_ACTORS]; // This is used to map an actor's id into a KnCap for killing and // waiting actors. #endif /* CHORUS */ /*****************************************************************************/ void ACE_OS::cleanup_tss (const u_int main_thread) { #if defined (ACE_HAS_TSS_EMULATION) || defined (ACE_WIN32) || (defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS)) // Call TSS destructors for current thread. ACE_TSS_Cleanup::instance ()->exit (0); #endif /* ACE_HAS_TSS_EMULATION || ACE_WIN32 || ACE_PSOS_HAS_TSS */ if (main_thread) { #if !defined (ACE_HAS_TSS_EMULATION) && !defined (ACE_HAS_MINIMAL_ACE_OS) // Just close the ACE_Log_Msg for the current (which should be // main) thread. We don't have TSS emulation; if there's native // TSS, it should call its destructors when the main thread // exits. ACE_Base_Thread_Adapter::close_log_msg (); #endif /* ! ACE_HAS_TSS_EMULATION && ! ACE_HAS_MINIMAL_ACE_OS */ #if defined (ACE_WIN32) || defined (ACE_HAS_TSS_EMULATION) || (defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS)) # if ! defined (ACE_HAS_TSS_EMULATION) // Don't do this with TSS_Emulation, because the the // ACE_TSS_Cleanup::instance () has already exited (). We can't // safely access the TSS values that were created by the main // thread. // Remove all TSS_Info table entries. ACE_TSS_Cleanup::instance ()->free_all_keys_left (); # endif /* ! ACE_HAS_TSS_EMULATION */ // Finally, free up the ACE_TSS_Cleanup instance. This method gets // called by the ACE_Object_Manager. delete ACE_TSS_Cleanup::instance (); #endif /* WIN32 || ACE_HAS_TSS_EMULATION || ACE_PSOS_HAS_TSS */ #if defined (ACE_HAS_TSS_EMULATION) ACE_TSS_Emulation::tss_close (); #endif /* ACE_HAS_TSS_EMULATION */ } } #if defined (ACE_LACKS_COND_T) && ! defined (ACE_PSOS_DIAB_MIPS) // NOTE: The ACE_OS::cond_* functions for some non-Unix platforms are // defined here either because they're too big to be inlined, or // to avoid use before definition if they were inline. // @@ The following functions could be inlined if i could figure where // to put it among the #ifdefs! int ACE_OS::condattr_init (ACE_condattr_t &attributes, int type) { attributes.type = type; return 0; } int ACE_OS::condattr_destroy (ACE_condattr_t &) { return 0; } int ACE_OS::cond_broadcast (ACE_cond_t *cv) { ACE_OS_TRACE ("ACE_OS::cond_broadcast"); # if defined (ACE_HAS_THREADS) // The must be locked before this call is made. // This is needed to ensure that and are // consistent relative to each other. ACE_OS::thread_mutex_lock (&cv->waiters_lock_); int have_waiters = 0; if (cv->waiters_ > 0) { // We are broadcasting, even if there is just one waiter... // Record the fact that we are broadcasting. This helps the // cond_wait() method know how to optimize itself. Be sure to // set this with the held. cv->was_broadcast_ = 1; have_waiters = 1; } ACE_OS::thread_mutex_unlock (&cv->waiters_lock_); int result = 0; if (have_waiters) { // Wake up all the waiters. if (ACE_OS::sema_post (&cv->sema_, cv->waiters_) == -1) result = -1; // Wait for all the awakened threads to acquire their part of // the counting semaphore. # if defined (VXWORKS) || defined (ACE_PSOS) else if (ACE_OS::sema_wait (&cv->waiters_done_) == -1) # else else if (ACE_OS::event_wait (&cv->waiters_done_) == -1) # endif /* VXWORKS */ result = -1; // This is okay, even without the held because // no other waiter threads can wake up to access it. cv->was_broadcast_ = 0; } return result; # else ACE_UNUSED_ARG (cv); ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_THREADS */ } int ACE_OS::cond_destroy (ACE_cond_t *cv) { ACE_OS_TRACE ("ACE_OS::cond_destroy"); # if defined (ACE_HAS_THREADS) # if defined (ACE_HAS_WTHREADS) ACE_OS::event_destroy (&cv->waiters_done_); # elif defined (VXWORKS) || defined (ACE_PSOS) ACE_OS::sema_destroy (&cv->waiters_done_); # endif /* VXWORKS */ ACE_OS::thread_mutex_destroy (&cv->waiters_lock_); return ACE_OS::sema_destroy (&cv->sema_); # else ACE_UNUSED_ARG (cv); ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_THREADS */ } int ACE_OS::cond_init (ACE_cond_t *cv, ACE_condattr_t &attributes, const char *name, void *arg) { return ACE_OS::cond_init (cv, attributes.type, name, arg); } # if defined (ACE_HAS_WCHAR) int ACE_OS::cond_init (ACE_cond_t *cv, ACE_condattr_t &attributes, const wchar_t *name, void *arg) { return ACE_OS::cond_init (cv, attributes.type, name, arg); } # endif /* ACE_HAS_WCHAR */ int ACE_OS::cond_init (ACE_cond_t *cv, short type, const char *name, void *arg) { ACE_OS_TRACE ("ACE_OS::cond_init"); # if defined (ACE_HAS_THREADS) cv->waiters_ = 0; cv->was_broadcast_ = 0; int result = 0; if (ACE_OS::sema_init (&cv->sema_, 0, type, name, arg) == -1) result = -1; else if (ACE_OS::thread_mutex_init (&cv->waiters_lock_) == -1) result = -1; # if defined (VXWORKS) || defined (ACE_PSOS) else if (ACE_OS::sema_init (&cv->waiters_done_, 0, type) == -1) # else else if (ACE_OS::event_init (&cv->waiters_done_) == -1) # endif /* VXWORKS */ result = -1; return result; # else ACE_UNUSED_ARG (cv); ACE_UNUSED_ARG (type); ACE_UNUSED_ARG (name); ACE_UNUSED_ARG (arg); ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_THREADS */ } # if defined (ACE_HAS_WCHAR) int ACE_OS::cond_init (ACE_cond_t *cv, short type, const wchar_t *name, void *arg) { ACE_OS_TRACE ("ACE_OS::cond_init"); # if defined (ACE_HAS_THREADS) cv->waiters_ = 0; cv->was_broadcast_ = 0; int result = 0; if (ACE_OS::sema_init (&cv->sema_, 0, type, name, arg) == -1) result = -1; else if (ACE_OS::thread_mutex_init (&cv->waiters_lock_) == -1) result = -1; # if defined (VXWORKS) || defined (ACE_PSOS) else if (ACE_OS::sema_init (&cv->waiters_done_, 0, type) == -1) # else else if (ACE_OS::event_init (&cv->waiters_done_) == -1) # endif /* VXWORKS */ result = -1; return result; # else ACE_UNUSED_ARG (cv); ACE_UNUSED_ARG (type); ACE_UNUSED_ARG (name); ACE_UNUSED_ARG (arg); ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_THREADS */ } # endif /* ACE_HAS_WCHAR */ int ACE_OS::cond_signal (ACE_cond_t *cv) { ACE_OS_TRACE ("ACE_OS::cond_signal"); # if defined (ACE_HAS_THREADS) // If there aren't any waiters, then this is a no-op. Note that // this function *must* be called with the held // since other wise there is a race condition that can lead to the // lost wakeup bug... This is needed to ensure that the // value is not in an inconsistent internal state while being // updated by another thread. ACE_OS::thread_mutex_lock (&cv->waiters_lock_); int have_waiters = cv->waiters_ > 0; ACE_OS::thread_mutex_unlock (&cv->waiters_lock_); if (have_waiters != 0) return ACE_OS::sema_post (&cv->sema_); else return 0; // No-op # else ACE_UNUSED_ARG (cv); ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_THREADS */ } int ACE_OS::cond_wait (ACE_cond_t *cv, ACE_mutex_t *external_mutex) { ACE_OS_TRACE ("ACE_OS::cond_wait"); # if defined (ACE_HAS_THREADS) // Prevent race conditions on the count. ACE_OS::thread_mutex_lock (&cv->waiters_lock_); cv->waiters_++; ACE_OS::thread_mutex_unlock (&cv->waiters_lock_); int result = 0; # if defined (ACE_HAS_SIGNAL_OBJECT_AND_WAIT) if (external_mutex->type_ == USYNC_PROCESS) // This call will automatically release the mutex and wait on the semaphore. ACE_WIN32CALL (ACE_ADAPT_RETVAL (::SignalObjectAndWait (external_mutex->proc_mutex_, cv->sema_, INFINITE, FALSE), result), int, -1, result); else # endif /* ACE_HAS_SIGNAL_OBJECT_AND_WAIT */ { // We keep the lock held just long enough to increment the count of // waiters by one. Note that we can't keep it held across the call // to ACE_OS::sema_wait() since that will deadlock other calls to // ACE_OS::cond_signal(). if (ACE_OS::mutex_unlock (external_mutex) != 0) return -1; // Wait to be awakened by a ACE_OS::cond_signal() or // ACE_OS::cond_broadcast(). result = ACE_OS::sema_wait (&cv->sema_); } // Reacquire lock to avoid race conditions on the count. ACE_OS::thread_mutex_lock (&cv->waiters_lock_); // We're ready to return, so there's one less waiter. cv->waiters_--; int last_waiter = cv->was_broadcast_ && cv->waiters_ == 0; // Release the lock so that other collaborating threads can make // progress. ACE_OS::thread_mutex_unlock (&cv->waiters_lock_); if (result == -1) // Bad things happened, so let's just return below. /* NOOP */; # if defined (ACE_HAS_SIGNAL_OBJECT_AND_WAIT) else if (external_mutex->type_ == USYNC_PROCESS) { if (last_waiter) // This call atomically signals the event and // waits until it can acquire the mutex. This is important to // prevent unfairness. ACE_WIN32CALL (ACE_ADAPT_RETVAL (::SignalObjectAndWait (cv->waiters_done_, external_mutex->proc_mutex_, INFINITE, FALSE), result), int, -1, result); else // We must always regain the , even when // errors occur because that's the guarantee that we give to // our callers. ACE_OS::mutex_lock (external_mutex); return result; /* NOTREACHED */ } # endif /* ACE_HAS_SIGNAL_OBJECT_AND_WAIT */ // If we're the last waiter thread during this particular broadcast // then let all the other threads proceed. else if (last_waiter) # if defined (VXWORKS) || defined (ACE_PSOS) ACE_OS::sema_post (&cv->waiters_done_); # else ACE_OS::event_signal (&cv->waiters_done_); # endif /* VXWORKS */ // We must always regain the , even when errors // occur because that's the guarantee that we give to our callers. ACE_OS::mutex_lock (external_mutex); return result; # else ACE_UNUSED_ARG (cv); ACE_UNUSED_ARG (external_mutex); ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_THREADS */ } int ACE_OS::cond_timedwait (ACE_cond_t *cv, ACE_mutex_t *external_mutex, ACE_Time_Value *timeout) { ACE_OS_TRACE ("ACE_OS::cond_timedwait"); # if defined (ACE_HAS_THREADS) // Handle the easy case first. if (timeout == 0) return ACE_OS::cond_wait (cv, external_mutex); # if defined (ACE_HAS_WTHREADS) || defined (VXWORKS) || defined (ACE_PSOS) // Prevent race conditions on the count. ACE_OS::thread_mutex_lock (&cv->waiters_lock_); cv->waiters_++; ACE_OS::thread_mutex_unlock (&cv->waiters_lock_); int result = 0; ACE_Errno_Guard error (errno, 0); int msec_timeout; if (timeout->sec () == 0 && timeout->usec () == 0) msec_timeout = 0; // Do a "poll." else { // Note that we must convert between absolute time (which is // passed as a parameter) and relative time (which is what // WaitForSingleObjects() expects). ACE_Time_Value relative_time (*timeout - ACE_OS::gettimeofday ()); // Watchout for situations where a context switch has caused the // current time to be > the timeout. if (relative_time < ACE_Time_Value::zero) msec_timeout = 0; else msec_timeout = relative_time.msec (); } # if defined (ACE_HAS_SIGNAL_OBJECT_AND_WAIT) if (external_mutex->type_ == USYNC_PROCESS) // This call will automatically release the mutex and wait on the // semaphore. result = ::SignalObjectAndWait (external_mutex->proc_mutex_, cv->sema_, msec_timeout, FALSE); else # endif /* ACE_HAS_SIGNAL_OBJECT_AND_WAIT */ { // We keep the lock held just long enough to increment the count // of waiters by one. Note that we can't keep it held across // the call to WaitForSingleObject since that will deadlock // other calls to ACE_OS::cond_signal(). if (ACE_OS::mutex_unlock (external_mutex) != 0) return -1; // Wait to be awakened by a ACE_OS::signal() or // ACE_OS::broadcast(). # if defined (ACE_WIN32) # if !defined (ACE_USES_WINCE_SEMA_SIMULATION) result = ::WaitForSingleObject (cv->sema_, msec_timeout); # else /* ACE_USES_WINCE_SEMA_SIMULATION */ // Can't use Win32 API on our simulated semaphores. result = ACE_OS::sema_wait (&cv->sema_, timeout); # endif /* ACE_USES_WINCE_SEMA_SIMULATION */ # elif defined (ACE_PSOS) // Inline the call to ACE_OS::sema_wait () because it takes an // ACE_Time_Value argument. Avoid the cost of that conversion . . . u_long ticks = (KC_TICKS2SEC * msec_timeout) / ACE_ONE_SECOND_IN_MSECS; //Tick set to 0 tells pSOS to wait forever is SM_WAIT is set. if(ticks == 0) result = ::sm_p (cv->sema_.sema_, SM_NOWAIT, ticks); //no timeout else result = ::sm_p (cv->sema_.sema_, SM_WAIT, ticks); # elif defined (VXWORKS) // Inline the call to ACE_OS::sema_wait () because it takes an // ACE_Time_Value argument. Avoid the cost of that conversion . . . int ticks_per_sec = ::sysClkRateGet (); int ticks = msec_timeout * ticks_per_sec / ACE_ONE_SECOND_IN_MSECS; result = ::semTake (cv->sema_.sema_, ticks); # endif /* ACE_WIN32 || VXWORKS */ } // Reacquire lock to avoid race conditions. ACE_OS::thread_mutex_lock (&cv->waiters_lock_); cv->waiters_--; int last_waiter = cv->was_broadcast_ && cv->waiters_ == 0; ACE_OS::thread_mutex_unlock (&cv->waiters_lock_); # if defined (ACE_WIN32) if (result != WAIT_OBJECT_0) { switch (result) { case WAIT_TIMEOUT: error = ETIME; break; default: error = ::GetLastError (); break; } result = -1; } # elif defined (ACE_PSOS) if (result != 0) { switch (result) { case ERR_TIMEOUT: // Timeout occured with SM_WAIT case ERR_NOMSG: // Didn't acquire semaphore w/ SM_NOWAIT (ticks=0) error = ETIME; break; default: error = errno; break; } result = -1; } # elif defined (VXWORKS) if (result == ERROR) { switch (errno) { case S_objLib_OBJ_TIMEOUT: error = ETIME; break; case S_objLib_OBJ_UNAVAILABLE: if (msec_timeout == 0) error = ETIME; break; default: error = errno; break; } result = -1; } # endif /* ACE_WIN32 || VXWORKS */ # if defined (ACE_HAS_SIGNAL_OBJECT_AND_WAIT) if (external_mutex->type_ == USYNC_PROCESS) { if (last_waiter) // This call atomically signals the event and // waits until it can acquire the mutex. This is important to // prevent unfairness. ACE_WIN32CALL (ACE_ADAPT_RETVAL (::SignalObjectAndWait (cv->waiters_done_, external_mutex->proc_mutex_, INFINITE, FALSE), result), int, -1, result); else // We must always regain the , even when // errors occur because that's the guarantee that we give to // our callers. ACE_OS::mutex_lock (external_mutex); return result; /* NOTREACHED */ } # endif /* ACE_HAS_SIGNAL_OBJECT_AND_WAIT */ // Note that this *must* be an "if" statement rather than an "else // if" statement since the caller may have timed out and hence the // result would have been -1 above. if (last_waiter) // Release the signaler/broadcaster if we're the last waiter. # if defined (ACE_WIN32) ACE_OS::event_signal (&cv->waiters_done_); # else ACE_OS::sema_post (&cv->waiters_done_); # endif /* ACE_WIN32 */ // We must always regain the , even when errors // occur because that's the guarantee that we give to our callers. ACE_OS::mutex_lock (external_mutex); return result; # endif /* ACE_HAS_WTHREADS || ACE_HAS_VXWORKS || ACE_PSOS */ # else ACE_UNUSED_ARG (cv); ACE_UNUSED_ARG (external_mutex); ACE_UNUSED_ARG (timeout); ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_THREADS */ } # if defined (ACE_HAS_WTHREADS) int ACE_OS::cond_timedwait (ACE_cond_t *cv, ACE_thread_mutex_t *external_mutex, ACE_Time_Value *timeout) { ACE_OS_TRACE ("ACE_OS::cond_timedwait"); # if defined (ACE_HAS_THREADS) // Handle the easy case first. if (timeout == 0) return ACE_OS::cond_wait (cv, external_mutex); // Prevent race conditions on the count. ACE_OS::thread_mutex_lock (&cv->waiters_lock_); cv->waiters_++; ACE_OS::thread_mutex_unlock (&cv->waiters_lock_); int result = 0; int error = 0; int msec_timeout; if (timeout->sec () == 0 && timeout->usec () == 0) msec_timeout = 0; // Do a "poll." else { // Note that we must convert between absolute time (which is // passed as a parameter) and relative time (which is what // WaitForSingleObjects() expects). ACE_Time_Value relative_time (*timeout - ACE_OS::gettimeofday ()); // Watchout for situations where a context switch has caused the // current time to be > the timeout. if (relative_time < ACE_Time_Value::zero) msec_timeout = 0; else msec_timeout = relative_time.msec (); } // We keep the lock held just long enough to increment the count of // waiters by one. Note that we can't keep it held across the call // to WaitForSingleObject since that will deadlock other calls to // ACE_OS::cond_signal(). if (ACE_OS::thread_mutex_unlock (external_mutex) != 0) return -1; // Wait to be awakened by a ACE_OS::signal() or ACE_OS::broadcast(). # if defined (ACE_USES_WINCE_SEMA_SIMULATION) // Can't use Win32 API on simulated semaphores. result = ACE_OS::sema_wait (&cv->sema_, timeout); if (result == -1 && errno == ETIME) result = WAIT_TIMEOUT; # else result = ::WaitForSingleObject (cv->sema_, msec_timeout); # endif /* ACE_USES_WINCE_SEMA_SIMULATION */ // Reacquire lock to avoid race conditions. ACE_OS::thread_mutex_lock (&cv->waiters_lock_); cv->waiters_--; int last_waiter = cv->was_broadcast_ && cv->waiters_ == 0; ACE_OS::thread_mutex_unlock (&cv->waiters_lock_); if (result != WAIT_OBJECT_0) { switch (result) { case WAIT_TIMEOUT: error = ETIME; break; default: error = ::GetLastError (); break; } result = -1; } if (last_waiter) // Release the signaler/broadcaster if we're the last waiter. ACE_OS::event_signal (&cv->waiters_done_); // We must always regain the , even when errors // occur because that's the guarantee that we give to our callers. ACE_OS::thread_mutex_lock (external_mutex); errno = error; return result; # else ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_THREADS */ } int ACE_OS::cond_wait (ACE_cond_t *cv, ACE_thread_mutex_t *external_mutex) { ACE_OS_TRACE ("ACE_OS::cond_wait"); # if defined (ACE_HAS_THREADS) ACE_OS::thread_mutex_lock (&cv->waiters_lock_); cv->waiters_++; ACE_OS::thread_mutex_unlock (&cv->waiters_lock_); int result = 0; int error = 0; // We keep the lock held just long enough to increment the count of // waiters by one. Note that we can't keep it held across the call // to ACE_OS::sema_wait() since that will deadlock other calls to // ACE_OS::cond_signal(). if (ACE_OS::thread_mutex_unlock (external_mutex) != 0) return -1; // Wait to be awakened by a ACE_OS::cond_signal() or // ACE_OS::cond_broadcast(). # if !defined (ACE_USES_WINCE_SEMA_SIMULATION) result = ::WaitForSingleObject (cv->sema_, INFINITE); # else // Can't use Win32 API on simulated semaphores. result = ACE_OS::sema_wait (&cv->sema_); if (result != WAIT_OBJECT_0 && errno == ETIME) result = WAIT_TIMEOUT; # endif /* ACE_USES_WINCE_SEMA_SIMULATION */ // Reacquire lock to avoid race conditions. ACE_OS::thread_mutex_lock (&cv->waiters_lock_); cv->waiters_--; int last_waiter = cv->was_broadcast_ && cv->waiters_ == 0; ACE_OS::thread_mutex_unlock (&cv->waiters_lock_); if (result != WAIT_OBJECT_0) { switch (result) { case WAIT_TIMEOUT: error = ETIME; break; default: error = ::GetLastError (); break; } } else if (last_waiter) // Release the signaler/broadcaster if we're the last waiter. ACE_OS::event_signal (&cv->waiters_done_); // We must always regain the , even when errors // occur because that's the guarantee that we give to our callers. ACE_OS::thread_mutex_lock (external_mutex); // Reset errno in case mutex_lock() also fails... errno = error; return result; # else ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_THREADS */ } # endif /* ACE_HAS_WTHREADS */ #endif /* ACE_LACKS_COND_T */ int ACE_OS::lwp_getparams (ACE_Sched_Params &sched_params) { #if defined (ACE_HAS_STHREADS) || defined (sun) // Get the class TS and RT class IDs. ACE_id_t rt_id; ACE_id_t ts_id; if (ACE_OS::scheduling_class ("RT", rt_id) == -1 || ACE_OS::scheduling_class ("TS", ts_id) == -1) return -1; // Get this LWP's scheduling parameters. pcparms_t pcparms; // The following is just to avoid Purify warnings about unitialized // memory reads. ACE_OS::memset (&pcparms, 0, sizeof pcparms); pcparms.pc_cid = PC_CLNULL; if (ACE_OS::priority_control (P_LWPID, P_MYID, PC_GETPARMS, (char *) &pcparms) == -1) return -1; else if (pcparms.pc_cid == rt_id) { // RT class. rtparms_t rtparms; ACE_OS::memcpy (&rtparms, pcparms.pc_clparms, sizeof rtparms); sched_params.policy (ACE_SCHED_FIFO); sched_params.priority (rtparms.rt_pri); sched_params.scope (ACE_SCOPE_THREAD); ACE_Time_Value quantum (rtparms.rt_tqsecs, rtparms.rt_tqnsecs == RT_TQINF ? 0 : rtparms.rt_tqnsecs * 1000); sched_params.quantum (quantum); return 0; } else if (pcparms.pc_cid == ts_id) { /* TS class */ tsparms_t tsparms; ACE_OS::memcpy (&tsparms, pcparms.pc_clparms, sizeof tsparms); sched_params.policy (ACE_SCHED_OTHER); sched_params.priority (tsparms.ts_upri); sched_params.scope (ACE_SCOPE_THREAD); return 0; } else return -1; #else /* ! ACE_HAS_STHREADS && ! sun */ ACE_UNUSED_ARG (sched_params); ACE_NOTSUP_RETURN (-1); #endif /* ! ACE_HAS_STHREADS && ! sun */ } int ACE_OS::lwp_setparams (const ACE_Sched_Params &sched_params) { #if defined (ACE_HAS_STHREADS) || defined (sun) ACE_Sched_Params lwp_params (sched_params); lwp_params.scope (ACE_SCOPE_LWP); return ACE_OS::sched_params (lwp_params); #else /* ! ACE_HAS_STHREADS && ! sun */ ACE_UNUSED_ARG (sched_params); ACE_NOTSUP_RETURN (-1); #endif /* ! ACE_HAS_STHREADS && ! sun */ } void ACE_OS::mutex_lock_cleanup (void *mutex) { ACE_OS_TRACE ("ACE_OS::mutex_lock_cleanup"); #if defined (ACE_HAS_THREADS) # if defined (ACE_HAS_PTHREADS) ACE_mutex_t *p_lock = (ACE_mutex_t *) mutex; ACE_OS::mutex_unlock (p_lock); # else ACE_UNUSED_ARG (mutex); # endif /* ACE_HAS_PTHREADS */ #else ACE_UNUSED_ARG (mutex); #endif /* ACE_HAS_THREADS */ } #if !defined (ACE_HAS_THREADS) || defined (ACE_LACKS_RWLOCK_T) int ACE_OS::rwlock_init (ACE_rwlock_t *rw, int type, const ACE_TCHAR *name, void *arg) { // ACE_OS_TRACE ("ACE_OS::rwlock_init"); # if defined (ACE_HAS_THREADS) && defined (ACE_LACKS_RWLOCK_T) // NT, POSIX, and VxWorks don't support this natively. ACE_UNUSED_ARG (name); int result = -1; // Since we cannot use the user specified name for all three // objects, we will create three completely new names. ACE_TCHAR name1[ACE_UNIQUE_NAME_LEN]; ACE_TCHAR name2[ACE_UNIQUE_NAME_LEN]; ACE_TCHAR name3[ACE_UNIQUE_NAME_LEN]; ACE_TCHAR name4[ACE_UNIQUE_NAME_LEN]; ACE_OS::unique_name ((const void *) &rw->lock_, name1, ACE_UNIQUE_NAME_LEN); ACE_OS::unique_name ((const void *) &rw->waiting_readers_, name2, ACE_UNIQUE_NAME_LEN); ACE_OS::unique_name ((const void *) &rw->waiting_writers_, name3, ACE_UNIQUE_NAME_LEN); ACE_OS::unique_name ((const void *) &rw->waiting_important_writer_, name4, ACE_UNIQUE_NAME_LEN); ACE_condattr_t attributes; if (ACE_OS::condattr_init (attributes, type) == 0) { if (ACE_OS::mutex_init (&rw->lock_, type, name1, (ACE_mutexattr_t *) arg) == 0 && ACE_OS::cond_init (&rw->waiting_readers_, attributes, name2, arg) == 0 && ACE_OS::cond_init (&rw->waiting_writers_, attributes, name3, arg) == 0 && ACE_OS::cond_init (&rw->waiting_important_writer_, attributes, name4, arg) == 0) { // Success! rw->ref_count_ = 0; rw->num_waiting_writers_ = 0; rw->num_waiting_readers_ = 0; rw->important_writer_ = 0; result = 0; } ACE_OS::condattr_destroy (attributes); } if (result == -1) { // Save/restore errno. ACE_Errno_Guard error (errno); ACE_OS::mutex_destroy (&rw->lock_); ACE_OS::cond_destroy (&rw->waiting_readers_); ACE_OS::cond_destroy (&rw->waiting_writers_); ACE_OS::cond_destroy (&rw->waiting_important_writer_); } return result; # else ACE_UNUSED_ARG (rw); ACE_UNUSED_ARG (type); ACE_UNUSED_ARG (name); ACE_UNUSED_ARG (arg); ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_THREADS */ } #endif /* ! ACE_HAS_THREADS || ACE_LACKS_RWLOCK_T */ int ACE_OS::sched_params (const ACE_Sched_Params &sched_params, ACE_id_t id) { ACE_OS_TRACE ("ACE_OS::sched_params"); #if defined (CHORUS) ACE_UNUSED_ARG (id); int result; struct sched_param param; ACE_thread_t thr_id = ACE_OS::thr_self (); param.sched_priority = sched_params.priority (); ACE_OSCALL_RETURN (ACE_ADAPT_RETVAL (::pthread_setschedparam (thr_id, sched_params.policy (), ¶m), result), int, -1); #elif defined (ACE_HAS_STHREADS) return ACE_OS::set_scheduling_params (sched_params, id); #elif defined (ACE_HAS_PTHREADS) && !defined (ACE_LACKS_SETSCHED) ACE_UNUSED_ARG (id); if (sched_params.quantum () != ACE_Time_Value::zero) { // quantums not supported errno = EINVAL; return -1; } // Thanks to Thilo Kielmann for // providing this code for 1003.1c PThreads. Please note that this // has only been tested for POSIX 1003.1c threads, and may cause // problems with other PThreads flavors! struct sched_param param; param.sched_priority = sched_params.priority (); if (sched_params.scope () == ACE_SCOPE_PROCESS) { int result = ::sched_setscheduler (0, // this process sched_params.policy (), ¶m) == -1 ? -1 : 0; # if defined (DIGITAL_UNIX) return result == 0 ? // Use priocntl (2) to set the process in the RT class, // if using an RT policy. ACE_OS::set_scheduling_params (sched_params) : result; # else /* ! DIGITAL_UNIX */ return result; # endif /* ! DIGITAL_UNIX */ } else if (sched_params.scope () == ACE_SCOPE_THREAD) { ACE_thread_t thr_id = ACE_OS::thr_self (); # if defined (ACE_HAS_PTHREADS_DRAFT4) return (::pthread_setscheduler (thr_id, sched_params.policy (), sched_params.priority()) == -1 ? -1 : 0); # else int result; ACE_OSCALL_RETURN (ACE_ADAPT_RETVAL (::pthread_setschedparam (thr_id, sched_params.policy (), ¶m), result), int, -1); # endif /* ACE_HAS_PTHREADS_DRAFT4 */ } # if defined (sun) // We need to be able to set LWP priorities on Suns, even without // ACE_HAS_STHREADS, to obtain preemption. else if (sched_params.scope () == ACE_SCOPE_LWP) return ACE_OS::set_scheduling_params (sched_params, id); # endif /* sun */ else // sched_params.scope () == ACE_SCOPE_LWP, which isn't POSIX { errno = EINVAL; return -1; } #elif defined (ACE_WIN32) && !defined (ACE_HAS_WINCE) // PharLap ETS can act on the current thread - it can set the // quantum also, unlike Win32. All this only works on the RT // version. # if defined (ACE_HAS_PHARLAP_RT) if (id != ACE_SELF) ACE_NOTSUP_RETURN (-1); if (sched_params.quantum() != ACE_Time_Value::zero) EtsSetTimeSlice (sched_params.quantum().msec()); # else ACE_UNUSED_ARG (id); if (sched_params.scope () != ACE_SCOPE_PROCESS || sched_params.quantum () != ACE_Time_Value::zero) { // Win32 only allows setting priority class (therefore, policy) // at the process level. I don't know of a way to set the // quantum. errno = EINVAL; return -1; } // Set the priority class of this process to the REALTIME process class // _if_ the policy is ACE_SCHED_FIFO. Otherwise, set to NORMAL. if (!::SetPriorityClass (::GetCurrentProcess (), (sched_params.policy () == ACE_SCHED_FIFO || sched_params.policy () == ACE_SCHED_RR) ? REALTIME_PRIORITY_CLASS : NORMAL_PRIORITY_CLASS)) { ACE_OS::set_errno_to_last_error (); return -1; } # endif /* ACE_HAS_PHARLAP_RT */ // Set the thread priority on the current thread. return ACE_OS::thr_setprio (sched_params.priority ()); #elif defined (VXWORKS) || defined (ACE_PSOS) ACE_UNUSED_ARG (id); // There is only one class of priorities on VxWorks, and no time // quanta. So, just set the current thread's priority. if (sched_params.policy () != ACE_SCHED_FIFO || sched_params.scope () != ACE_SCOPE_PROCESS || sched_params.quantum () != ACE_Time_Value::zero) { errno = EINVAL; return -1; } // Set the thread priority on the current thread. return ACE_OS::thr_setprio (sched_params.priority ()); #else ACE_UNUSED_ARG (sched_params); ACE_UNUSED_ARG (id); ACE_NOTSUP_RETURN (-1); #endif /* CHORUS */ } int ACE_OS::scheduling_class (const char *class_name, ACE_id_t &id) { #if defined (ACE_HAS_PRIOCNTL) // Get the priority class ID. pcinfo_t pcinfo; // The following is just to avoid Purify warnings about unitialized // memory reads. ACE_OS::memset (&pcinfo, 0, sizeof pcinfo); ACE_OS::strcpy (pcinfo.pc_clname, class_name); if (ACE_OS::priority_control (P_ALL /* ignored */, P_MYID /* ignored */, PC_GETCID, (char *) &pcinfo) == -1) { return -1; } else { id = pcinfo.pc_cid; return 0; } #else /* ! ACE_HAS_PRIOCNTL */ ACE_UNUSED_ARG (class_name); ACE_UNUSED_ARG (id); ACE_NOTSUP_RETURN (-1); #endif /* ! ACE_HAS_PRIOCNTL */ } int ACE_OS::set_scheduling_params (const ACE_Sched_Params &sched_params, ACE_id_t id) { #if defined (ACE_HAS_PRIOCNTL) // Set priority class, priority, and quantum of this LWP or process as // specified in sched_params. // Get the priority class ID. ACE_id_t class_id; if (ACE_OS::scheduling_class (sched_params.policy() == ACE_SCHED_OTHER ? "TS" : "RT", class_id) == -1) { return -1; } pcparms_t pcparms; // The following is just to avoid Purify warnings about unitialized // memory reads. ACE_OS::memset (&pcparms, 0, sizeof pcparms); pcparms.pc_cid = class_id; if (sched_params.policy () == ACE_SCHED_OTHER && sched_params.quantum () == ACE_Time_Value::zero) // SunOS doesn't support non-zero quantums in time-sharing class: use // real-time class instead. { tsparms_t tsparms; // The following is just to avoid Purify warnings about unitialized // memory reads. ACE_OS::memset (&tsparms, 0, sizeof tsparms); // Don't change ts_uprilim (user priority limit) tsparms.ts_uprilim = TS_NOCHANGE; tsparms.ts_upri = sched_params.priority (); // Package up the TS class ID and parameters for the // priority_control () call. ACE_OS::memcpy (pcparms.pc_clparms, &tsparms, sizeof tsparms); } else if (sched_params.policy () == ACE_SCHED_FIFO || (sched_params.policy () == ACE_SCHED_RR && sched_params.quantum () != ACE_Time_Value::zero)) // must have non-zero quantum for RR, to make it meaningful // A zero quantum with FIFO has special significance: it actually // means infinite time quantum, i.e., run-to-completion. { rtparms_t rtparms; // The following is just to avoid Purify warnings about unitialized // memory reads. ACE_OS::memset (&rtparms, 0, sizeof rtparms); rtparms.rt_pri = sched_params.priority (); if (sched_params.quantum () == ACE_Time_Value::zero) { // rtparms.rt_tqsecs is ignored with RT_TQINF rtparms.rt_tqnsecs = RT_TQINF; } else { rtparms.rt_tqsecs = (ulong) sched_params.quantum ().sec (); rtparms.rt_tqnsecs = sched_params.quantum ().usec () * 1000; } // Package up the RT class ID and parameters for the // priority_control () call. ACE_OS::memcpy (pcparms.pc_clparms, &rtparms, sizeof rtparms); } else { errno = EINVAL; return -1; } if (ACE_OS::priority_control ((idtype_t) (sched_params.scope () == ACE_SCOPE_THREAD ? ACE_SCOPE_PROCESS : sched_params.scope ()), id, PC_SETPARMS, (char *) &pcparms) < 0) { return ACE_OS::last_error (); } return 0; #else /* ! ACE_HAS_PRIOCNTL */ ACE_UNUSED_ARG (sched_params); ACE_UNUSED_ARG (id); ACE_NOTSUP_RETURN (-1); #endif /* ! ACE_HAS_PRIOCNTL */ } int ACE_OS::thr_create (ACE_THR_FUNC func, void *args, long flags, ACE_thread_t *thr_id, ACE_hthread_t *thr_handle, long priority, void *stack, size_t stacksize, ACE_Base_Thread_Adapter *thread_adapter) { ACE_OS_TRACE ("ACE_OS::thr_create"); if (ACE_BIT_DISABLED (flags, THR_DETACHED) && ACE_BIT_DISABLED (flags, THR_JOINABLE)) ACE_SET_BITS (flags, THR_JOINABLE); #if defined (ACE_NO_THREAD_ADAPTER) # define ACE_THREAD_FUNCTION func # define ACE_THREAD_ARGUMENT args #else /* ! defined (ACE_NO_THREAD_ADAPTER) */ # if defined (ACE_PSOS) # define ACE_THREAD_FUNCTION (PSOS_TASK_ENTRY_POINT) thread_args->entry_point () # else # define ACE_THREAD_FUNCTION thread_args->entry_point () # endif /* defined (ACE_PSOS) */ # define ACE_THREAD_ARGUMENT thread_args #endif /* ! defined (ACE_NO_THREAD_ADAPTER) */ ACE_Base_Thread_Adapter *thread_args; if (thread_adapter == 0) #if defined (ACE_HAS_WIN32_STRUCTURAL_EXCEPTIONS) ACE_NEW_RETURN (thread_args, ACE_OS_Thread_Adapter (func, args, (ACE_THR_C_FUNC) ace_thread_adapter, ACE_OS_Object_Manager::seh_except_selector(), ACE_OS_Object_Manager::seh_except_handler()), -1); #else ACE_NEW_RETURN (thread_args, ACE_OS_Thread_Adapter (func, args, (ACE_THR_C_FUNC) ace_thread_adapter), -1); #endif /* ACE_HAS_WIN32_STRUCTURAL_EXCEPTIONS */ else thread_args = thread_adapter; #if defined (ACE_HAS_THREADS) // *** Set Stack Size # if defined (ACE_NEEDS_HUGE_THREAD_STACKSIZE) if (stacksize < ACE_NEEDS_HUGE_THREAD_STACKSIZE) stacksize = ACE_NEEDS_HUGE_THREAD_STACKSIZE; # endif /* ACE_NEEDS_HUGE_THREAD_STACKSIZE */ # if !defined (VXWORKS) // On VxWorks, the OS will provide a task name if the user doesn't. // So, we don't need to create a tmp_thr. If the caller of this // member function is the Thread_Manager, than thr_id will be non-zero // anyways. ACE_thread_t tmp_thr; if (thr_id == 0) thr_id = &tmp_thr; # endif /* ! VXWORKS */ ACE_hthread_t tmp_handle; if (thr_handle == 0) thr_handle = &tmp_handle; # if defined (ACE_HAS_PTHREADS) int result; pthread_attr_t attr; # if defined (ACE_HAS_PTHREADS_DRAFT4) if (::pthread_attr_create (&attr) != 0) # else /* ACE_HAS_PTHREADS_DRAFT4 */ if (::pthread_attr_init (&attr) != 0) # endif /* ACE_HAS_PTHREADS_DRAFT4 */ return -1; # if defined (CHORUS) // If it is a super actor, we can't set stacksize. But for the time // being we are all non-super actors. Should be fixed to take care // of super actors!!! if (stacksize == 0) stacksize = ACE_CHORUS_DEFAULT_MIN_STACK_SIZE; else if (stacksize < ACE_CHORUS_DEFAULT_MIN_STACK_SIZE) stacksize = ACE_CHORUS_DEFAULT_MIN_STACK_SIZE; # endif /*CHORUS */ # if defined (ACE_HAS_PTHREAD_SETSTACK) if ((stacksize != 0) && (stack != 0)) # else if (stacksize != 0) # endif /* ACE_HAS_PTHREAD_SETSTACK */ { size_t size = stacksize; # if defined (PTHREAD_STACK_MIN) if (size < ACE_static_cast (size_t, PTHREAD_STACK_MIN)) size = PTHREAD_STACK_MIN; # endif /* PTHREAD_STACK_MIN */ # if !defined (ACE_LACKS_THREAD_STACK_SIZE) // JCEJ 12/17/96 # if defined (ACE_HAS_PTHREADS_DRAFT4) || defined (ACE_HAS_PTHREADS_DRAFT6) if (::pthread_attr_setstacksize (&attr, size) != 0) # else # if defined (ACE_HAS_PTHREAD_SETSTACK) if (ACE_ADAPT_RETVAL(pthread_attr_setstack (&attr, stack, size), result) == -1) # else if (ACE_ADAPT_RETVAL(pthread_attr_setstacksize (&attr, size), result) == -1) # endif /* ACE_HAS_PTHREAD_SETSTACK */ # endif /* ACE_HAS_PTHREADS_DRAFT4, 6 */ { # if defined (ACE_HAS_PTHREADS_DRAFT4) ::pthread_attr_delete (&attr); # else /* ACE_HAS_PTHREADS_DRAFT4 */ ::pthread_attr_destroy (&attr); # endif /* ACE_HAS_PTHREADS_DRAFT4 */ return -1; } # else ACE_UNUSED_ARG (size); # endif /* !ACE_LACKS_THREAD_STACK_SIZE */ } // *** Set Stack Address # if !defined (ACE_HAS_PTHREAD_SETSTACK) # if !defined (ACE_LACKS_THREAD_STACK_ADDR) if (stack != 0) { if (::pthread_attr_setstackaddr (&attr, stack) != 0) { # if defined (ACE_HAS_PTHREADS_DRAFT4) ::pthread_attr_delete (&attr); # else /* ACE_HAS_PTHREADS_DRAFT4 */ ::pthread_attr_destroy (&attr); # endif /* ACE_HAS_PTHREADS_DRAFT4 */ return -1; } } # else ACE_UNUSED_ARG (stack); # endif /* !ACE_LACKS_THREAD_STACK_ADDR */ # endif /* ACE_HAS_PTHREAD_SETSTACK */ // *** Deal with various attributes if (flags != 0) { // *** Set Detach state # if !defined (ACE_LACKS_SETDETACH) if (ACE_BIT_ENABLED (flags, THR_DETACHED) || ACE_BIT_ENABLED (flags, THR_JOINABLE)) { int dstate = PTHREAD_CREATE_JOINABLE; if (ACE_BIT_ENABLED (flags, THR_DETACHED)) dstate = PTHREAD_CREATE_DETACHED; # if defined (ACE_HAS_PTHREADS_DRAFT4) if (::pthread_attr_setdetach_np (&attr, dstate) != 0) # else /* ACE_HAS_PTHREADS_DRAFT4 */ # if defined (ACE_HAS_PTHREADS_DRAFT6) if (::pthread_attr_setdetachstate (&attr, &dstate) != 0) # else if (ACE_ADAPT_RETVAL(::pthread_attr_setdetachstate (&attr, dstate), result) != 0) # endif /* ACE_HAS_PTHREADS_DRAFT6 */ # endif /* ACE_HAS_PTHREADS_DRAFT4 */ { # if defined (ACE_HAS_PTHREADS_DRAFT4) ::pthread_attr_delete (&attr); # else /* ACE_HAS_PTHREADS_DRAFT4 */ ::pthread_attr_destroy (&attr); # endif /* ACE_HAS_PTHREADS_DRAFT4 */ return -1; } } // Note: if ACE_LACKS_SETDETACH and THR_DETACHED is enabled, we // call ::pthread_detach () below. If THR_DETACHED is not // enabled, we call ::pthread_detach () in the Thread_Manager, // after joining with the thread. # endif /* ACE_LACKS_SETDETACH */ // *** Set Policy # if !defined (ACE_LACKS_SETSCHED) // If we wish to set the priority explicitly, we have to enable // explicit scheduling, and a policy, too. if (priority != ACE_DEFAULT_THREAD_PRIORITY) { ACE_SET_BITS (flags, THR_EXPLICIT_SCHED); if (ACE_BIT_DISABLED (flags, THR_SCHED_FIFO) && ACE_BIT_DISABLED (flags, THR_SCHED_RR) && ACE_BIT_DISABLED (flags, THR_SCHED_DEFAULT)) ACE_SET_BITS (flags, THR_SCHED_DEFAULT); } if (ACE_BIT_ENABLED (flags, THR_SCHED_FIFO) || ACE_BIT_ENABLED (flags, THR_SCHED_RR) || ACE_BIT_ENABLED (flags, THR_SCHED_DEFAULT)) { int spolicy; # if defined (ACE_HAS_ONLY_SCHED_OTHER) // SunOS, thru version 5.6, only supports SCHED_OTHER. spolicy = SCHED_OTHER; # else // Make sure to enable explicit scheduling, in case we didn't // enable it above (for non-default priority). ACE_SET_BITS (flags, THR_EXPLICIT_SCHED); if (ACE_BIT_ENABLED (flags, THR_SCHED_DEFAULT)) spolicy = SCHED_OTHER; else if (ACE_BIT_ENABLED (flags, THR_SCHED_FIFO)) spolicy = SCHED_FIFO; # if defined (SCHED_IO) else if (ACE_BIT_ENABLED (flags, THR_SCHED_IO)) spolicy = SCHED_IO; # else else if (ACE_BIT_ENABLED (flags, THR_SCHED_IO)) { errno = ENOSYS; return -1; } # endif /* SCHED_IO */ else spolicy = SCHED_RR; # if defined (ACE_HAS_FSU_PTHREADS) int ret; switch (spolicy) { case SCHED_FIFO: case SCHED_RR: ret = 0; break; default: ret = 22; break; } if (ret != 0) { ::pthread_attr_destroy (&attr); return -1; } # endif /* ACE_HAS_FSU_PTHREADS */ # endif /* ACE_HAS_ONLY_SCHED_OTHER */ # if defined (ACE_HAS_PTHREADS_DRAFT4) result = ::pthread_attr_setsched (&attr, spolicy); # elif defined (ACE_HAS_PTHREADS_DRAFT6) result = ::pthread_attr_setschedpolicy (&attr, spolicy); # else /* draft 7 or std */ ACE_ADAPT_RETVAL(::pthread_attr_setschedpolicy (&attr, spolicy), result); # endif /* ACE_HAS_PTHREADS_DRAFT4 */ if (result != 0) { # if defined (ACE_HAS_PTHREADS_DRAFT4) ::pthread_attr_delete (&attr); # else /* ACE_HAS_PTHREADS_DRAFT4 */ ::pthread_attr_destroy (&attr); # endif /* ACE_HAS_PTHREADS_DRAFT4 */ return -1; } } // *** Set Priority (use reasonable default priorities) # if defined(ACE_HAS_PTHREADS_STD) // If we wish to explicitly set a scheduling policy, we also // have to specify a priority. We choose a "middle" priority as // default. Maybe this is also necessary on other POSIX'ish // implementations? if ((ACE_BIT_ENABLED (flags, THR_SCHED_FIFO) || ACE_BIT_ENABLED (flags, THR_SCHED_RR) || ACE_BIT_ENABLED (flags, THR_SCHED_DEFAULT)) && priority == ACE_DEFAULT_THREAD_PRIORITY) { if (ACE_BIT_ENABLED (flags, THR_SCHED_FIFO)) priority = ACE_THR_PRI_FIFO_DEF; else if (ACE_BIT_ENABLED (flags, THR_SCHED_RR)) priority = ACE_THR_PRI_RR_DEF; else // THR_SCHED_DEFAULT priority = ACE_THR_PRI_OTHER_DEF; } # endif /* ACE_HAS_PTHREADS_STD */ if (priority != ACE_DEFAULT_THREAD_PRIORITY) { struct sched_param sparam; ACE_OS::memset ((void *) &sparam, 0, sizeof sparam); # if defined (ACE_HAS_IRIX62_THREADS) sparam.sched_priority = ACE_MIN (priority, (long) PTHREAD_MAX_PRIORITY); # elif defined (PTHREAD_MAX_PRIORITY) && !defined(ACE_HAS_PTHREADS_STD) /* For MIT pthreads... */ sparam.prio = ACE_MIN (priority, PTHREAD_MAX_PRIORITY); # elif defined(ACE_HAS_PTHREADS_STD) && !defined (ACE_HAS_STHREADS) // The following code forces priority into range. if (ACE_BIT_ENABLED (flags, THR_SCHED_FIFO)) sparam.sched_priority = ACE_MIN (ACE_THR_PRI_FIFO_MAX, ACE_MAX (ACE_THR_PRI_FIFO_MIN, priority)); else if (ACE_BIT_ENABLED(flags, THR_SCHED_RR)) sparam.sched_priority = ACE_MIN (ACE_THR_PRI_RR_MAX, ACE_MAX (ACE_THR_PRI_RR_MIN, priority)); else // Default policy, whether set or not sparam.sched_priority = ACE_MIN (ACE_THR_PRI_OTHER_MAX, ACE_MAX (ACE_THR_PRI_OTHER_MIN, priority)); # elif defined (PRIORITY_MAX) sparam.sched_priority = ACE_MIN (priority, (long) PRIORITY_MAX); # else sparam.sched_priority = priority; # endif /* ACE_HAS_IRIX62_THREADS */ # if defined (ACE_HAS_FSU_PTHREADS) if (sparam.sched_priority >= PTHREAD_MIN_PRIORITY && sparam.sched_priority <= PTHREAD_MAX_PRIORITY) attr.prio = sparam.sched_priority; else { pthread_attr_destroy (&attr); errno = EINVAL; return -1; } # else { # if defined (sun) && defined (ACE_HAS_ONLY_SCHED_OTHER) // SunOS, through 5.6, POSIX only allows priorities > 0 to // ::pthread_attr_setschedparam. If a priority of 0 was // requested, set the thread priority after creating it, below. if (priority > 0) # endif /* sun && ACE_HAS_ONLY_SCHED_OTHER */ { # if defined (ACE_HAS_PTHREADS_DRAFT4) || defined (ACE_HAS_PTHREADS_DRAFT6) result = ::pthread_attr_setprio (&attr, sparam.sched_priority); # else /* this is draft 7 or std */ ACE_ADAPT_RETVAL(::pthread_attr_setschedparam (&attr, &sparam), result); # endif /* ACE_HAS_PTHREADS_DRAFT4, 6 */ if (result != 0) { # if defined (ACE_HAS_PTHREADS_DRAFT4) ::pthread_attr_delete (&attr); # else /* ACE_HAS_PTHREADS_DRAFT4 */ ::pthread_attr_destroy (&attr); # endif /* ACE_HAS_PTHREADS_DRAFT4 */ return -1; } } } # endif /* ACE_HAS_FSU_PTHREADS */ } // *** Set scheduling explicit or inherited if (ACE_BIT_ENABLED (flags, THR_INHERIT_SCHED) || ACE_BIT_ENABLED (flags, THR_EXPLICIT_SCHED)) { # if defined (ACE_HAS_PTHREADS_DRAFT4) int sched = PTHREAD_DEFAULT_SCHED; # else /* ACE_HAS_PTHREADS_DRAFT4 */ int sched = PTHREAD_EXPLICIT_SCHED; # endif /* ACE_HAS_PTHREADS_DRAFT4 */ if (ACE_BIT_ENABLED (flags, THR_INHERIT_SCHED)) sched = PTHREAD_INHERIT_SCHED; if (::pthread_attr_setinheritsched (&attr, sched) != 0) { # if defined (ACE_HAS_PTHREADS_DRAFT4) ::pthread_attr_delete (&attr); # else /* ACE_HAS_PTHREADS_DRAFT4 */ ::pthread_attr_destroy (&attr); # endif /* ACE_HAS_PTHREADS_DRAFT4 */ return -1; } } # else /* ACE_LACKS_SETSCHED */ ACE_UNUSED_ARG (priority); # endif /* ACE_LACKS_SETSCHED */ // *** Set Scope # if !defined (ACE_LACKS_THREAD_PROCESS_SCOPING) if (ACE_BIT_ENABLED (flags, THR_SCOPE_SYSTEM) || ACE_BIT_ENABLED (flags, THR_SCOPE_PROCESS)) { # if defined (ACE_CONFIG_LINUX_H) || defined (HPUX) // LinuxThreads do not have support for PTHREAD_SCOPE_PROCESS. // Neither does HPUX (up to HP-UX 11.00, as far as I know). int scope = PTHREAD_SCOPE_SYSTEM; # else /* ACE_CONFIG_LINUX_H */ int scope = PTHREAD_SCOPE_PROCESS; # endif /* ACE_CONFIG_LINUX_H */ if (ACE_BIT_ENABLED (flags, THR_SCOPE_SYSTEM)) scope = PTHREAD_SCOPE_SYSTEM; if (::pthread_attr_setscope (&attr, scope) != 0) { # if defined (ACE_HAS_PTHREADS_DRAFT4) ::pthread_attr_delete (&attr); # else /* ACE_HAS_PTHREADS_DRAFT4 */ ::pthread_attr_destroy (&attr); # endif /* ACE_HAS_PTHREADS_DRAFT4 */ return -1; } } # endif /* !ACE_LACKS_THREAD_PROCESS_SCOPING */ if (ACE_BIT_ENABLED (flags, THR_NEW_LWP)) { // Increment the number of LWPs by one to emulate the // SunOS semantics. int lwps = ACE_OS::thr_getconcurrency (); if (lwps == -1) { if (errno == ENOTSUP) // Suppress the ENOTSUP because it's harmless. errno = 0; else // This should never happen on SunOS: // ::thr_getconcurrency () should always succeed. return -1; } else if (ACE_OS::thr_setconcurrency (lwps + 1) == -1) { if (errno == ENOTSUP) { // Unlikely: ::thr_getconcurrency () is supported but // ::thr_setconcurrency () is not? } else return -1; } } } # if defined (ACE_HAS_PTHREADS_DRAFT4) ACE_OSCALL (::pthread_create (thr_id, attr, thread_args->entry_point (), thread_args), int, -1, result); # if defined (ACE_LACKS_SETDETACH) if (ACE_BIT_ENABLED (flags, THR_DETACHED)) { # if defined (HPUX_10) // HP-UX DCE threads' pthread_detach will smash thr_id if it's // just given as an argument. This will cause // ACE_Thread_Manager (if it's doing this create) to lose track // of the new thread since the ID will be passed back equal to // 0. So give pthread_detach a junker to scribble on. ACE_thread_t junker; cma_handle_assign(thr_id, &junker); ::pthread_detach (&junker); # else ::pthread_detach (thr_id); # endif /* HPUX_10 */ } # endif /* ACE_LACKS_SETDETACH */ ::pthread_attr_delete (&attr); # elif defined (ACE_HAS_PTHREADS_DRAFT6) ACE_OSCALL (::pthread_create (thr_id, &attr, thread_args->entry_point (), thread_args), int, -1, result); ::pthread_attr_destroy (&attr); # else /* this is draft 7 or std */ ACE_OSCALL (ACE_ADAPT_RETVAL (::pthread_create (thr_id, &attr, thread_args->entry_point (), thread_args), result), int, -1, result); ::pthread_attr_destroy (&attr); # endif /* ACE_HAS_PTHREADS_DRAFT4 */ // This is a SunOS or POSIX implementation of pthreads, where we // assume that ACE_thread_t and ACE_hthread_t are the same. If this // *isn't* correct on some platform, please let us know. if (result != -1) *thr_handle = *thr_id; # if defined (sun) && defined (ACE_HAS_ONLY_SCHED_OTHER) // SunOS prior to 5.7: // If the priority is 0, then we might have to set it now because we // couldn't set it with ::pthread_attr_setschedparam, as noted // above. This doesn't provide strictly correct behavior, because // the thread was created (above) with the priority of its parent. // (That applies regardless of the inherit_sched attribute: if it // was PTHREAD_INHERIT_SCHED, then it certainly inherited its // parent's priority. If it was PTHREAD_EXPLICIT_SCHED, then "attr" // was initialized by the SunOS ::pthread_attr_init () to contain // NULL for the priority, which indicated to SunOS ::pthread_create // () to inherit the parent priority.) if (priority == 0) { // Check the priority of this thread, which is the parent // of the newly created thread. If it is 0, then the // newly created thread will have inherited the priority // of 0, so there's no need to explicitly set it. struct sched_param sparam; int policy = 0; ACE_OSCALL (ACE_ADAPT_RETVAL (::pthread_getschedparam (thr_self (), &policy, &sparam), result), int, -1, result); // The only policy supported by by SunOS, thru version 5.6, // is SCHED_OTHER, so that's hard-coded here. policy = ACE_SCHED_OTHER; if (sparam.sched_priority != 0) { ACE_OS::memset ((void *) &sparam, 0, sizeof sparam); // The memset to 0 sets the priority to 0, so we don't need // to explicitly set sparam.sched_priority. ACE_OSCALL_RETURN (ACE_ADAPT_RETVAL (::pthread_setschedparam (*thr_id, policy, &sparam), result), int, -1); } } # if defined (ACE_NEEDS_LWP_PRIO_SET) # if 0 // It would be useful if we could make this work. But, it requires // a mechanism for determining the ID of an LWP to which another // thread is bound. Is there a way to do that? Instead, just rely // on the code in ACE_Thread_Adapter::invoke () to set the LWP // priority. // If the thread is bound, then set the priority on its LWP. if (ACE_BIT_ENABLED (flags, THR_BOUND)) { ACE_Sched_Params sched_params (ACE_BIT_ENABLED (flags, THR_SCHED_FIFO) || ACE_BIT_ENABLED (flags, THR_SCHED_RR) ? ACE_SCHED_FIFO : ACE_SCHED_OTHER, priority); result = ACE_OS::lwp_setparams (sched_params, /* ? How do we find the ID of the LWP to which *thr_id is bound? */); } # endif /* 0 */ # endif /* ACE_NEEDS_LWP_PRIO_SET */ # endif /* sun && ACE_HAS_ONLY_SCHED_OTHER */ return result; # elif defined (ACE_HAS_STHREADS) int result; int start_suspended = ACE_BIT_ENABLED (flags, THR_SUSPENDED); if (priority != ACE_DEFAULT_THREAD_PRIORITY) // If we need to set the priority, then we need to start the // thread in a suspended mode. ACE_SET_BITS (flags, THR_SUSPENDED); ACE_OSCALL (ACE_ADAPT_RETVAL (::thr_create (stack, stacksize, thread_args->entry_point (), thread_args, flags, thr_id), result), int, -1, result); if (result != -1) { // With SunOS threads, ACE_thread_t and ACE_hthread_t are the same. *thr_handle = *thr_id; if (priority != ACE_DEFAULT_THREAD_PRIORITY) { // Set the priority of the new thread and then let it // continue, but only if the user didn't start it suspended // in the first place! if ((result = ACE_OS::thr_setprio (*thr_id, priority)) != 0) { errno = result; return -1; } if (start_suspended == 0) { if ((result = ACE_OS::thr_continue (*thr_id)) != 0) { errno = result; return -1; } } } } return result; # elif defined (ACE_HAS_WTHREADS) ACE_UNUSED_ARG (stack); # if defined (ACE_HAS_MFC) && (ACE_HAS_MFC != 0) if (ACE_BIT_ENABLED (flags, THR_USE_AFX)) { CWinThread *cwin_thread = ::AfxBeginThread ((AFX_THREADPROC) thread_args->entry_point (), thread_args, priority, 0, flags | THR_SUSPENDED); // Have to duplicate the handle because // CWinThread::~CWinThread() closes the original handle. # if !defined (ACE_HAS_WINCE) (void) ::DuplicateHandle (::GetCurrentProcess (), cwin_thread->m_hThread, ::GetCurrentProcess (), thr_handle, 0, TRUE, DUPLICATE_SAME_ACCESS); # endif /* ! ACE_HAS_WINCE */ *thr_id = cwin_thread->m_nThreadID; if (ACE_BIT_ENABLED (flags, THR_SUSPENDED) == 0) cwin_thread->ResumeThread (); // cwin_thread will be deleted in AfxThreadExit() // Warning: If AfxThreadExit() is called from within the // thread, ACE_TSS_Cleanup->exit() never gets called ! } else # endif /* ACE_HAS_MFC */ { int start_suspended = ACE_BIT_ENABLED (flags, THR_SUSPENDED); if (priority != ACE_DEFAULT_THREAD_PRIORITY) // If we need to set the priority, then we need to start the // thread in a suspended mode. ACE_SET_BITS (flags, THR_SUSPENDED); *thr_handle = (void *) ACE_BEGINTHREADEX (0, ACE_static_cast (u_int, stacksize), thread_args->entry_point (), thread_args, flags, thr_id); if (priority != ACE_DEFAULT_THREAD_PRIORITY && *thr_handle != 0) { // Set the priority of the new thread and then let it // continue, but only if the user didn't start it suspended // in the first place! ACE_OS::thr_setprio (*thr_handle, priority); if (start_suspended == 0) ACE_OS::thr_continue (*thr_handle); } } # if 0 *thr_handle = ::CreateThread (0, stacksize, LPTHREAD_START_ROUTINE (thread_args->entry_point ()), thread_args, flags, thr_id); # endif /* 0 */ // Close down the handle if no one wants to use it. if (thr_handle == &tmp_handle) ::CloseHandle (tmp_handle); if (*thr_handle != 0) return 0; else ACE_FAIL_RETURN (-1); /* NOTREACHED */ # elif defined (ACE_PSOS) // stack is created in the task's memory region 0 ACE_UNUSED_ARG (stack); // task creation and start flags are fixed ACE_UNUSED_ARG (flags); // lowest priority is reserved for the IDLE pSOS+ system daemon, // highest are reserved for high priority pSOS+ system daemons if (priority < PSOS_TASK_MIN_PRIORITY) { priority = PSOS_TASK_MIN_PRIORITY; } else if (priority > PSOS_TASK_MAX_PRIORITY) { priority = PSOS_TASK_MAX_PRIORITY; } // set the stacksize to a default value if no size is specified if (stacksize == 0) stacksize = ACE_PSOS_DEFAULT_STACK_SIZE; ACE_hthread_t tid; *thr_handle = 0; // create the thread if (t_create ((char *) thr_id, // task name priority, // (possibly adjusted) task priority stacksize, // passed stack size is used for supervisor stack 0, // no user stack: tasks run strictly in supervisor mode T_LOCAL, // local to the pSOS+ node (does not support pSOS+m) &tid) // receives task id != 0) { return -1; } // pSOS tasks are passed an array of 4 u_longs u_long targs[4]; targs[0] = (u_long) ACE_THREAD_ARGUMENT; targs[1] = 0; targs[2] = 0; targs[3] = 0; // start the thread if (t_start (tid, T_PREEMPT | // Task can be preempted // T_NOTSLICE | // Task is not timesliced with other tasks at same priority T_TSLICE | // Task is timesliced with other tasks at same priority T_NOASR | // Task level signals disabled T_SUPV | // Task runs strictly in supervisor mode T_ISR, // Hardware interrupts are enabled ACE_THREAD_FUNCTION, // Task entry point targs) // Task argument(s) != 0) { return -1; } // store the task id in the handle and return success *thr_handle = tid; return 0; # elif defined (VXWORKS) // The hard-coded values below are what ::sp () would use. (::sp () // hardcodes priority to 100, flags to VX_FP_TASK, and stacksize to // 20,000.) stacksize should be an even integer. If a stack is not // specified, ::taskSpawn () is used so that we can set the // priority, flags, and stacksize. If a stack is specified, // ::taskInit ()/::taskActivate() are used. // If called with thr_create() defaults, use same default values as ::sp (): if (priority == ACE_DEFAULT_THREAD_PRIORITY) priority = 100; // Assumes that there is a floating point coprocessor. As noted // above, ::sp () hardcodes this, so we should be safe with it. if (flags == 0) flags = VX_FP_TASK; if (stacksize == 0) stacksize = 20000; const u_int thr_id_provided = thr_id && *thr_id && (*thr_id)[0] != ACE_THR_ID_ALLOCATED; ACE_hthread_t tid; # if 0 /* Don't support setting of stack, because it doesn't seem to work. */ if (stack == 0) { # else ACE_UNUSED_ARG (stack); # endif /* 0 */ // The call below to ::taskSpawn () causes VxWorks to assign a // unique task name of the form: "t" + an integer, because the // first argument is 0. tid = ::taskSpawn (thr_id_provided ? *thr_id : 0, priority, (int) flags, (int) stacksize, thread_args->entry_point (), (int) thread_args, 0, 0, 0, 0, 0, 0, 0, 0, 0); # if 0 /* Don't support setting of stack, because it doesn't seem to work. */ } else { // If a task name (thr_id) was not supplied, then the task will // not have a unique name. That's VxWorks' behavior. // Carve out a TCB at the beginning of the stack space. The TCB // occupies 400 bytes with VxWorks 5.3.1/I386. WIND_TCB *tcb = (WIND_TCB *) stack; // The TID is defined to be the address of the TCB. int status = ::taskInit (tcb, thr_id_provided ? *thr_id : 0, priority, (int) flags, (char *) stack + sizeof (WIND_TCB), (int) (stacksize - sizeof (WIND_TCB)), thread_args->entry_point (), (int) thread_args, 0, 0, 0, 0, 0, 0, 0, 0, 0); if (status == OK) { // The task was successfully initialized, now activate it. status = ::taskActivate ((ACE_hthread_t) tcb); } tid = status == OK ? (ACE_hthread_t) tcb : ERROR; } # endif /* 0 */ if (tid == ERROR) return -1; else { if (! thr_id_provided && thr_id) { if (*thr_id && (*thr_id)[0] == ACE_THR_ID_ALLOCATED) // *thr_id was allocated by the Thread_Manager. ::taskTcb // (int tid) returns the address of the WIND_TCB (task // control block). According to the ::taskSpawn() // documentation, the name of the new task is stored at // pStackBase, but is that of the current task? If so, it // might be a bit quicker than this extraction of the tcb // . . . ACE_OS::strsncpy (*thr_id + 1, ::taskTcb (tid)->name, 10); else // *thr_id was not allocated by the Thread_Manager. // Pass back the task name in the location pointed to // by thr_id. *thr_id = ::taskTcb (tid)->name; } // else if the thr_id was provided, there's no need to overwrite // it with the same value (string). If thr_id is 0, then we can't // pass the task name back. if (thr_handle) *thr_handle = tid; return 0; } # endif /* ACE_HAS_STHREADS */ #else ACE_UNUSED_ARG (func); ACE_UNUSED_ARG (args); ACE_UNUSED_ARG (flags); ACE_UNUSED_ARG (thr_id); ACE_UNUSED_ARG (thr_handle); ACE_UNUSED_ARG (priority); ACE_UNUSED_ARG (stack); ACE_UNUSED_ARG (stacksize); ACE_NOTSUP_RETURN (-1); #endif /* ACE_HAS_THREADS */ } void ACE_OS::thr_exit (ACE_THR_FUNC_RETURN status) { ACE_OS_TRACE ("ACE_OS::thr_exit"); #if defined (ACE_HAS_THREADS) # if defined (ACE_HAS_PTHREADS) ::pthread_exit (status); # elif defined (ACE_HAS_STHREADS) ::thr_exit (status); # elif defined (ACE_HAS_WTHREADS) // Can't call it here because on NT, the thread is exited // directly by ACE_Thread_Adapter::invoke (). // ACE_TSS_Cleanup::instance ()->exit (status); # if defined (ACE_HAS_MFC) && (ACE_HAS_MFC != 0) int using_afx = -1; // An ACE_Thread_Descriptor really is an ACE_OS_Thread_Descriptor. // But without #including ace/Thread_Manager.h, we don't know that. ACE_OS_Thread_Descriptor *td = ACE_Base_Thread_Adapter::thr_desc_log_msg (); if (td) using_afx = ACE_BIT_ENABLED (td->flags (), THR_USE_AFX); # endif /* ACE_HAS_MFC && (ACE_HAS_MFC != 0) */ // Call TSS destructors. ACE_OS::cleanup_tss (0 /* not main thread */); // Exit the thread. // Allow CWinThread-destructor to be invoked from AfxEndThread. // _endthreadex will be called from AfxEndThread so don't exit the // thread now if we are running an MFC thread. # if defined (ACE_HAS_MFC) && (ACE_HAS_MFC != 0) if (using_afx != -1) { if (using_afx) ::AfxEndThread (status); else ACE_ENDTHREADEX (status); } else { // Not spawned by ACE_Thread_Manager, use the old buggy // version. You should seriously consider using // ACE_Thread_Manager to spawn threads. The following code is // know to cause some problem. CWinThread *pThread = ::AfxGetThread (); if (!pThread || pThread->m_nThreadID != ACE_OS::thr_self ()) ACE_ENDTHREADEX (status); else ::AfxEndThread (status); } # else ACE_ENDTHREADEX (status); # endif /* ACE_HAS_MFC && ACE_HAS_MFS != 0*/ # elif defined (VXWORKS) ACE_hthread_t tid; ACE_OS::thr_self (tid); *((int *) status) = ::taskDelete (tid); # elif defined (ACE_PSOS) ACE_hthread_t tid; ACE_OS::thr_self (tid); # if defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS) // Call TSS destructors. ACE_OS::cleanup_tss (0 /* not main thread */); # endif /* ACE_PSOS && ACE_PSOS_HAS_TSS */ *((u_long *) status) = ::t_delete (tid); # endif /* ACE_HAS_PTHREADS */ #else ACE_UNUSED_ARG (status); #endif /* ACE_HAS_THREADS */ } #if defined (VXWORKS) // Leave this in the global scope to allow // users to adjust the delay value. int ACE_THR_JOIN_DELAY = 5; int ACE_OS::thr_join (ACE_hthread_t thr_handle, ACE_THR_FUNC_RETURN *status) { // We can't get the status of the thread if (status != 0) { *status = 0; } // This method can not support joining all threads if (ACE_OS::thr_cmp (thr_handle, ACE_OS::NULL_hthread)) { ACE_NOTSUP_RETURN (-1); } int retval = ESRCH; ACE_hthread_t current; ACE_OS::thr_self (current); // Make sure we are not joining ourself if (ACE_OS::thr_cmp (thr_handle, current)) { retval = EDEADLK; } else { // Whether the task exists or not // we will return a successful value retval = 0; // Verify that the task id still exists while (taskIdVerify (thr_handle) == OK) { // Wait a bit to see if the task is still active. ACE_OS::sleep (ACE_THR_JOIN_DELAY); } } // Adapt the return value into errno and return value. // The ACE_ADAPT_RETVAL macro doesn't exactly do what // we need to do here, so we do it manually. if (retval != 0) { errno = retval; retval = -1; } return retval; } int ACE_OS::thr_join (ACE_thread_t waiter_id, ACE_thread_t *thr_id, ACE_THR_FUNC_RETURN *status) { thr_id = 0; return ACE_OS::thr_join (taskNameToId (waiter_id), status); } #endif /* VXWORKS */ int ACE_OS::thr_key_detach (void *inst) { #if defined (ACE_WIN32) || defined (ACE_HAS_TSS_EMULATION) || (defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS)) if (ACE_TSS_Cleanup::lockable ()) return ACE_TSS_Cleanup::instance()->detach (inst); else // We're in static constructor/destructor phase. Don't // try to use the ACE_TSS_Cleanup instance because its lock // might not have been constructed yet, or might have been // destroyed already. Just leak the key . . . return -1; #else ACE_UNUSED_ARG (inst); ACE_NOTSUP_RETURN (-1); #endif /* ACE_WIN32 || ACE_HAS_TSS_EMULATION */ } int ACE_OS::thr_key_used (ACE_thread_key_t key) { #if defined (ACE_WIN32) || defined (ACE_HAS_TSS_EMULATION) || (defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS)) ACE_TSS_Cleanup::instance ()->key_used (key); return 0; #else ACE_UNUSED_ARG (key); ACE_NOTSUP_RETURN (-1); #endif /* ACE_WIN32 || ACE_HAS_TSS_EMULATION || ACE_PSOS_HAS_TSS */ } #if defined (ACE_HAS_TSS_EMULATION) && defined (ACE_HAS_THREAD_SPECIFIC_STORAGE) int ACE_OS::thr_keycreate (ACE_OS_thread_key_t *key, # if defined (ACE_HAS_THR_C_DEST) ACE_THR_C_DEST dest, # else ACE_THR_DEST dest, # endif /* ACE_HAS_THR_C_DEST */ void *inst) { // ACE_OS_TRACE ("ACE_OS::thr_keycreate"); # if defined (ACE_HAS_THREADS) # if defined (ACE_HAS_PTHREADS) ACE_UNUSED_ARG (inst); # if defined (ACE_HAS_PTHREADS_DRAFT4) # if defined (ACE_HAS_STDARG_THR_DEST) ACE_OSCALL_RETURN (::pthread_keycreate (key, (void (*)(...)) dest), int, -1); # else /* ! ACE_HAS_STDARG_THR_DEST */ ACE_OSCALL_RETURN (::pthread_keycreate (key, dest), int, -1); # endif /* ! ACE_HAS_STDARG_THR_DEST */ # elif defined (ACE_HAS_PTHREADS_DRAFT6) ACE_OSCALL_RETURN (::pthread_key_create (key, dest), int, -1); # else ACE_OSCALL_RETURN (ACE_ADAPT_RETVAL (::pthread_key_create (key, dest), ace_result_), int, -1); # endif /* ACE_HAS_PTHREADS_DRAFT4 */ # elif defined (ACE_HAS_STHREADS) ACE_UNUSED_ARG (inst); ACE_OSCALL_RETURN (ACE_ADAPT_RETVAL (::thr_keycreate (key, dest), ace_result_), int, -1); # elif defined (ACE_HAS_WTHREADS) *key = ::TlsAlloc (); if (*key != ACE_SYSCALL_FAILED) { // Extract out the thread-specific table instance and stash away // the key and destructor so that we can free it up later on... return ACE_TSS_Cleanup::instance ()->insert (*key, dest, inst); } else ACE_FAIL_RETURN (-1); /* NOTREACHED */ # endif /* ACE_HAS_STHREADS */ # else ACE_UNUSED_ARG (key); ACE_UNUSED_ARG (dest); ACE_UNUSED_ARG (inst); ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_THREADS */ } #endif /* ACE_HAS_TSS_EMULATION && ACE_HAS_THREAD_SPECIFIC_STORAGE */ int ACE_OS::thr_keycreate (ACE_thread_key_t *key, #if defined (ACE_HAS_THR_C_DEST) ACE_THR_C_DEST dest, #else ACE_THR_DEST dest, #endif /* ACE_HAS_THR_C_DEST */ void *inst) { // ACE_OS_TRACE ("ACE_OS::thr_keycreate"); #if defined (ACE_HAS_THREADS) # if defined (ACE_HAS_TSS_EMULATION) if (ACE_TSS_Emulation::next_key (*key) == 0) { ACE_TSS_Emulation::tss_destructor (*key, dest); // Extract out the thread-specific table instance and stash away // the key and destructor so that we can free it up later on... return ACE_TSS_Cleanup::instance ()->insert (*key, dest, inst); } else { errno = EAGAIN; return -1; } # elif defined (ACE_HAS_PTHREADS) ACE_UNUSED_ARG (inst); # if defined (ACE_HAS_PTHREADS_DRAFT4) # if defined (ACE_HAS_STDARG_THR_DEST) ACE_OSCALL_RETURN (::pthread_keycreate (key, (void (*)(...)) dest), int, -1); # else /* ! ACE_HAS_STDARG_THR_DEST */ ACE_OSCALL_RETURN (::pthread_keycreate (key, dest), int, -1); # endif /* ! ACE_HAS_STDARG_THR_DEST */ # elif defined (ACE_HAS_PTHREADS_DRAFT6) ACE_OSCALL_RETURN (::pthread_key_create (key, dest), int, -1); # else ACE_OSCALL_RETURN (ACE_ADAPT_RETVAL (::pthread_key_create (key, dest), ace_result_), int, -1); # endif /* ACE_HAS_PTHREADS_DRAFT4 */ # elif defined (ACE_HAS_STHREADS) ACE_UNUSED_ARG (inst); ACE_OSCALL_RETURN (ACE_ADAPT_RETVAL (::thr_keycreate (key, dest), ace_result_), int, -1); # elif defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS) static u_long unique_name = 0; void *tsdanchor; ++unique_name; if (::tsd_create (ACE_reinterpret_cast (char *, &unique_name), 0, TSD_NOALLOC, (void ****) &tsdanchor, key) != 0) { return -1; } return ACE_TSS_Cleanup::instance ()->insert (*key, dest, inst); # elif defined (ACE_HAS_WTHREADS) *key = ::TlsAlloc (); if (*key != ACE_SYSCALL_FAILED) { // Extract out the thread-specific table instance and stash away // the key and destructor so that we can free it up later on... return ACE_TSS_Cleanup::instance ()->insert (*key, dest, inst); } else ACE_FAIL_RETURN (-1); /* NOTREACHED */ # else ACE_UNUSED_ARG (key); ACE_UNUSED_ARG (dest); ACE_UNUSED_ARG (inst); ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_TSS_EMULATION */ #else ACE_UNUSED_ARG (key); ACE_UNUSED_ARG (dest); ACE_UNUSED_ARG (inst); ACE_NOTSUP_RETURN (-1); #endif /* ACE_HAS_THREADS */ } int ACE_OS::thr_keyfree (ACE_thread_key_t key) { ACE_OS_TRACE ("ACE_OS::thr_keyfree"); #if defined (ACE_HAS_THREADS) # if defined (ACE_HAS_TSS_EMULATION) // Release the key in the TSS_Emulation administration ACE_TSS_Emulation::release_key (key); return ACE_TSS_Cleanup::instance ()->remove (key); # elif defined (ACE_HAS_PTHREADS_DRAFT4) || defined (ACE_HAS_PTHREADS_DRAFT6) ACE_UNUSED_ARG (key); ACE_NOTSUP_RETURN (-1); # elif defined (ACE_HAS_PTHREADS) return ::pthread_key_delete (key); # elif defined (ACE_HAS_THR_KEYDELETE) return ::thr_keydelete (key); # elif defined (ACE_HAS_STHREADS) ACE_UNUSED_ARG (key); ACE_NOTSUP_RETURN (-1); # elif defined (ACE_HAS_WTHREADS) // Extract out the thread-specific table instance and free up // the key and destructor. ACE_TSS_Cleanup::instance ()->remove (key); ACE_WIN32CALL_RETURN (ACE_ADAPT_RETVAL (::TlsFree (key), ace_result_), int, -1); # elif defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS) // Extract out the thread-specific table instance and free up // the key and destructor. ACE_TSS_Cleanup::instance ()->remove (key); return (::tsd_delete (key) == 0) ? 0 : -1; # else ACE_UNUSED_ARG (key); ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_TSS_EMULATION */ #else ACE_UNUSED_ARG (key); ACE_NOTSUP_RETURN (-1); #endif /* ACE_HAS_THREADS */ } int ACE_OS::thr_setprio (const ACE_Sched_Priority prio) { // Set the thread priority on the current thread. ACE_hthread_t my_thread_id; ACE_OS::thr_self (my_thread_id); int status = ACE_OS::thr_setprio (my_thread_id, prio); #if defined (ACE_NEEDS_LWP_PRIO_SET) // If the thread is in the RT class, then set the priority on its // LWP. (Instead of doing this if the thread is in the RT class, it // should be done for all bound threads. But, there doesn't appear // to be an easy way to determine if the thread is bound.) if (status == 0) { // Find what scheduling class the thread's LWP is in. ACE_Sched_Params sched_params (ACE_SCHED_OTHER, 0); if (ACE_OS::lwp_getparams (sched_params) == -1) { return -1; } else if (sched_params.policy () == ACE_SCHED_FIFO || sched_params.policy () == ACE_SCHED_RR) { // This thread's LWP is in the RT class, so we need to set // its priority. sched_params.priority (prio); return ACE_OS::lwp_setparams (sched_params); } // else this is not an RT thread. Nothing more needs to be // done. } #endif /* ACE_NEEDS_LWP_PRIO_SET */ return status; } #if defined (ACE_HAS_TSS_EMULATION) && defined (ACE_HAS_THREAD_SPECIFIC_STORAGE) int ACE_OS::thr_setspecific (ACE_OS_thread_key_t key, void *data) { // ACE_OS_TRACE ("ACE_OS::thr_setspecific"); # if defined (ACE_HAS_THREADS) # if defined (ACE_HAS_PTHREADS) # if defined (ACE_HAS_FSU_PTHREADS) // Call pthread_init() here to initialize threads package. FSU // threads need an initialization before the first thread constructor. // This seems to be the one; however, a segmentation fault may // indicate that another pthread_init() is necessary, perhaps in // Synch.cpp or Synch_T.cpp. FSU threads will not reinit if called // more than once, so another call to pthread_init will not adversely // affect existing threads. pthread_init (); # endif /* ACE_HAS_FSU_PTHREADS */ ACE_OSCALL_RETURN (ACE_ADAPT_RETVAL (::pthread_setspecific (key, data), ace_result_), int, -1); # elif defined (ACE_HAS_STHREADS) ACE_OSCALL_RETURN (ACE_ADAPT_RETVAL (::thr_setspecific (key, data), ace_result_), int, -1); # elif defined (ACE_HAS_WTHREADS) ::TlsSetValue (key, data); return 0; # endif /* ACE_HAS_STHREADS */ # else ACE_UNUSED_ARG (key); ACE_UNUSED_ARG (data); ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_THREADS */ } #endif /* ACE_HAS_TSS_EMULATION && ACE_HAS_THREAD_SPECIFIC_STORAGE */ int ACE_OS::thr_setspecific (ACE_thread_key_t key, void *data) { // ACE_OS_TRACE ("ACE_OS::thr_setspecific"); #if defined (ACE_HAS_THREADS) # if defined (ACE_HAS_TSS_EMULATION) ACE_KEY_INDEX (key_index, key); if (key_index >= ACE_TSS_Emulation::total_keys ()) { errno = EINVAL; data = 0; return -1; } else { ACE_TSS_Emulation::ts_object (key) = data; ACE_TSS_Cleanup::instance ()->key_used (key); return 0; } # elif defined (ACE_HAS_PTHREADS) # if defined (ACE_HAS_FSU_PTHREADS) // Call pthread_init() here to initialize threads package. FSU // threads need an initialization before the first thread constructor. // This seems to be the one; however, a segmentation fault may // indicate that another pthread_init() is necessary, perhaps in // Synch.cpp or Synch_T.cpp. FSU threads will not reinit if called // more than once, so another call to pthread_init will not adversely // affect existing threads. pthread_init (); # endif /* ACE_HAS_FSU_PTHREADS */ # if defined (ACE_HAS_PTHREADS_DRAFT4) || defined (ACE_HAS_PTHREADS_DRAFT6) ACE_OSCALL_RETURN (::pthread_setspecific (key, data), int, -1); # else ACE_OSCALL_RETURN (ACE_ADAPT_RETVAL (::pthread_setspecific (key, data), ace_result_), int, -1); # endif /* ACE_HAS_PTHREADS_DRAFT4, 6 */ # elif defined (ACE_HAS_STHREADS) ACE_OSCALL_RETURN (ACE_ADAPT_RETVAL (::thr_setspecific (key, data), ace_result_), int, -1); # elif defined (ACE_PSOS) && defined (ACE_PSOS_HAS_TSS) ACE_hthread_t tid; ACE_OS::thr_self (tid); if (::tsd_setval (key, tid, data) != 0) return -1; ACE_TSS_Cleanup::instance ()->key_used (key); return 0; # elif defined (ACE_HAS_WTHREADS) ::TlsSetValue (key, data); ACE_TSS_Cleanup::instance ()->key_used (key); return 0; # else ACE_UNUSED_ARG (key); ACE_UNUSED_ARG (data); ACE_NOTSUP_RETURN (-1); # endif /* ACE_HAS_STHREADS */ #else ACE_UNUSED_ARG (key); ACE_UNUSED_ARG (data); ACE_NOTSUP_RETURN (-1); #endif /* ACE_HAS_THREADS */ } void ACE_OS::unique_name (const void *object, ACE_TCHAR *name, size_t length) { // The process ID will provide uniqueness between processes on the // same machine. The "this" pointer of the will provide // uniqueness between other "live" objects in the same process. The // uniqueness of this name is therefore only valid for the life of // . ACE_TCHAR temp_name[ACE_UNIQUE_NAME_LEN]; ACE_OS::sprintf (temp_name, ACE_LIB_TEXT ("%p%d"), object, ACE_static_cast (int, ACE_OS::getpid ())); ACE_OS::strsncpy (name, temp_name, length); } #if defined (VXWORKS) # include /**/ /* for ::sp() */ // This global function can be used from the VxWorks shell to pass // arguments to a C main () function. // // usage: -> spa main, "arg1", "arg2" // // All arguments must be quoted, even numbers. int spa (FUNCPTR entry, ...) { static const unsigned int MAX_ARGS = 10; static char *argv[MAX_ARGS]; va_list pvar; unsigned int argc; // Hardcode a program name because the real one isn't available // through the VxWorks shell. argv[0] = "ace_main"; // Peel off arguments to spa () and put into argv. va_arg () isn't // necessarily supposed to return 0 when done, though since the // VxWorks shell uses a fixed number (10) of arguments, it might 0 // the unused ones. This function could be used to increase that // limit, but then it couldn't depend on the trailing 0. So, the // number of arguments would have to be passed. va_start (pvar, entry); for (argc = 1; argc <= MAX_ARGS; ++argc) { argv[argc] = va_arg (pvar, char *); if (argv[argc] == 0) break; } if (argc > MAX_ARGS && argv[argc-1] != 0) { // try to read another arg, and warn user if the limit was exceeded if (va_arg (pvar, char *) != 0) ACE_OS::fprintf (stderr, "spa(): number of arguments limited to %d\n", MAX_ARGS); } else { // fill unused argv slots with 0 to get rid of leftovers // from previous invocations for (unsigned int i = argc; i <= MAX_ARGS; ++i) argv[i] = 0; } // The hard-coded options are what ::sp () uses, except for the // larger stack size (instead of ::sp ()'s 20000). const int ret = ::taskSpawn (argv[0], // task name 100, // task priority VX_FP_TASK, // task options ACE_NEEDS_HUGE_THREAD_STACKSIZE, // stack size entry, // entry point argc, // first argument to main () (int) argv, // second argument to main () 0, 0, 0, 0, 0, 0, 0, 0); va_end (pvar); // ::taskSpawn () returns the taskID on success: return 0 instead if // successful return ret > 0 ? 0 : ret; } // A helper function for the extended spa functions static void add_to_argv (int& argc, char** argv, int max_args, char* string) { char indouble = 0; size_t previous = 0; size_t length = ACE_OS::strlen (string); // We use <= to make sure that we get the last argument for (size_t i = 0; i <= length; i++) { // Is it a double quote that hasn't been escaped? if (string[i] == '\"' && (i == 0 || string[i - 1] != '\\')) { indouble ^= 1; if (indouble) { // We have just entered a double quoted string, so // save the starting position of the contents. previous = i + 1; } else { // We have just left a double quoted string, so // zero out the ending double quote. string[i] = '\0'; } } else if (string[i] == '\\') // Escape the next character { // The next character is automatically // skipped because of the strcpy ACE_OS::strcpy (string + i, string + i + 1); length--; } else if (!indouble && (ACE_OS::ace_isspace (string[i]) || string[i] == '\0')) { string[i] = '\0'; if (argc < max_args) { argv[argc] = string + previous; argc++; } else { ACE_OS::fprintf (stderr, "spae(): number of arguments " "limited to %d\n", max_args); } // Skip over whitespace in between arguments for(++i; i < length && ACE_OS::ace_isspace (string[i]); ++i) { } // Save the starting point for the next time around previous = i; // Make sure we don't skip over a character due // to the above loop to skip over whitespace i--; } } } // This global function can be used from the VxWorks shell to pass // arguments to a C main () function. // // usage: -> spae main, "arg1 arg2 \"arg3 with spaces\"" // // All arguments must be within double quotes, even numbers. int spae (FUNCPTR entry, ...) { static const int WINDSH_ARGS = 10; static const int MAX_ARGS = 128; static char* argv[MAX_ARGS] = { "ace_main", 0 }; va_list pvar; int argc = 1; // Peel off arguments to spa () and put into argv. va_arg () isn't // necessarily supposed to return 0 when done, though since the // VxWorks shell uses a fixed number (10) of arguments, it might 0 // the unused ones. va_start (pvar, entry); int i = 0; for (char* str = va_arg (pvar, char*); str != 0 && i < WINDSH_ARGS; str = va_arg (pvar, char*), ++i) { add_to_argv(argc, argv, MAX_ARGS, str); } // fill unused argv slots with 0 to get rid of leftovers // from previous invocations for (i = argc; i < MAX_ARGS; ++i) argv[i] = 0; // The hard-coded options are what ::sp () uses, except for the // larger stack size (instead of ::sp ()'s 20000). const int ret = ::taskSpawn (argv[0], // task name 100, // task priority VX_FP_TASK, // task options ACE_NEEDS_HUGE_THREAD_STACKSIZE, // stack size entry, // entry point argc, // first argument to main () (int) argv, // second argument to main () 0, 0, 0, 0, 0, 0, 0, 0); va_end (pvar); // ::taskSpawn () returns the taskID on success: return 0 instead if // successful return ret > 0 ? 0 : ret; } // This global function can be used from the VxWorks shell to pass // arguments to a C main () function. The function will be run // within the shells task. // // usage: -> spaef main, "arg1 arg2 \"arg3 with spaces\"" // // All arguments must be within double quotes, even numbers. // Unlike the spae function, this fuction executes the supplied // routine in the foreground, rather than spawning it in a separate // task. int spaef (FUNCPTR entry, ...) { static const int WINDSH_ARGS = 10; static const int MAX_ARGS = 128; static char* argv[MAX_ARGS] = { "ace_main", 0 }; va_list pvar; int argc = 1; // Peel off arguments to spa () and put into argv. va_arg () isn't // necessarily supposed to return 0 when done, though since the // VxWorks shell uses a fixed number (10) of arguments, it might 0 // the unused ones. va_start (pvar, entry); int i = 0; for (char* str = va_arg (pvar, char*); str != 0 && i < WINDSH_ARGS; str = va_arg (pvar, char*), ++i) { add_to_argv(argc, argv, MAX_ARGS, str); } // fill unused argv slots with 0 to get rid of leftovers // from previous invocations for (i = argc; i < MAX_ARGS; ++i) argv[i] = 0; int ret = entry (argc, argv); va_end (pvar); // Return the return value of the invoked ace_main routine. return ret; } #endif /* VXWORKS */ #if defined (__DGUX) && defined (ACE_HAS_THREADS) && defined (_POSIX4A_DRAFT10_SOURCE) extern "C" int __d6_sigwait (sigset_t *set); extern "C" int __d10_sigwait (const sigset_t *set, int *sig) { sigset_t unconst_set = *set; int caught_sig = __d6_sigwait (&unconst_set); if (caught == -1) return -1; *sig = caught_sig; return 0; } #endif /* __DGUX && PTHREADS && _POSIX4A_DRAFT10_SOURCE */