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// $Id$
#include "ace/Thread_Adapter.h"
#include "ace/OS.h"
#include "ace/Thread_Manager.h"
#include "ace/Thread_Exit.h"
#include "ace/Thread_Hook.h"
ACE_RCSID(ace, Thread_Adapter, "$Id$")
#if !defined (ACE_HAS_INLINED_OSCALLS)
# include "ace/Thread_Adapter.inl"
#endif /* ACE_HAS_INLINED_OS_CALLS */
ACE_Thread_Adapter::ACE_Thread_Adapter (ACE_THR_FUNC user_func,
void *arg,
ACE_THR_C_FUNC entry_point,
ACE_Thread_Manager *tm,
ACE_Thread_Descriptor *td
#if defined (ACE_HAS_WIN32_STRUCTURAL_EXCEPTIONS)
, ACE_SEH_EXCEPT_HANDLER selector,
ACE_SEH_EXCEPT_HANDLER handler
#endif /* ACE_HAS_WIN32_STRUCTURAL_EXCEPTIONS */
)
: ACE_Base_Thread_Adapter (
user_func
, arg
, entry_point
, td
#if defined (ACE_HAS_WIN32_STRUCTURAL_EXCEPTIONS)
, selector
, handler
#endif /* ACE_HAS_WIN32_STRUCTURAL_EXCEPTIONS */
)
, thr_mgr_ (tm)
{
ACE_OS_TRACE ("ACE_Thread_Adapter::ACE_Thread_Adapter");
}
ACE_Thread_Adapter::~ACE_Thread_Adapter (void)
{
}
void *
ACE_Thread_Adapter::invoke (void)
{
// Inherit the logging features if the parent thread has an
// ACE_Log_Msg instance in thread-specific storage.
this->inherit_log_msg ();
#if !defined(ACE_USE_THREAD_MANAGER_ADAPTER)
// NOTE: this preprocessor directive should match the one in above
// ACE_Thread_Exit::instance (). With the Xavier Pthreads package,
// the exit_hook in TSS causes a seg fault. So, this works around
// that by creating exit_hook on the stack.
# if defined (ACE_HAS_THREAD_SPECIFIC_STORAGE) || defined (ACE_HAS_TSS_EMULATION)
// Obtain our thread-specific exit hook and make sure that it knows
// how to clean us up! Note that we never use this pointer directly
// (it's stored in thread-specific storage), so it's ok to
// dereference it here and only store it as a reference.
// Except if it is null, then the thr_mgr() method crashes.
// -jxh
ACE_Thread_Exit *exit_hook_instance = ACE_Thread_Exit::instance ();
ACE_Thread_Exit_Maybe exit_hook_maybe (exit_hook_instance == 0);
ACE_Thread_Exit *exit_hook_ptr = exit_hook_instance
? exit_hook_instance
: exit_hook_maybe.instance ();
ACE_Thread_Exit &exit_hook = *exit_hook_ptr;
if (this->thr_mgr () != 0)
{
// Keep track of the <Thread_Manager> that's associated with this
// <exit_hook>.
exit_hook.thr_mgr (this->thr_mgr ());
}
# else
// Without TSS, create an <ACE_Thread_Exit> instance. When this
// function returns, its destructor will be called because the
// object goes out of scope. The drawback with this appraoch is
// that the destructor _won't_ get called if <thr_exit> is called.
// So, threads shouldn't exit that way. Instead, they should return
// from <svc>.
ACE_Thread_Exit exit_hook;
exit_hook.thr_mgr (this->thr_mgr ());
# endif /* ACE_HAS_THREAD_SPECIFIC_STORAGE || ACE_HAS_TSS_EMULATION */
#endif /* ! ACE_USE_THREAD_MANAGER_ADAPTER */
return this->invoke_i ();
}
void *
ACE_Thread_Adapter::invoke_i (void)
{
// Extract the arguments.
ACE_THR_FUNC_INTERNAL func = ACE_reinterpret_cast (ACE_THR_FUNC_INTERNAL,
this->user_func_);
void *arg = this->arg_;
#if defined (ACE_WIN32) && defined (ACE_HAS_MFC) && (ACE_HAS_MFC != 0)
ACE_OS_Thread_Descriptor *thr_desc = this->thr_desc_;
#endif /* ACE_WIN32 && ACE_HAS_MFC && (ACE_HAS_MFC != 0) */
// Delete ourselves since we don't need <this> anymore. Make sure
// not to access <this> anywhere below this point.
delete this;
#if defined (ACE_NEEDS_LWP_PRIO_SET)
// On SunOS, the LWP priority needs to be set in order to get
// preemption when running in the RT class. This is the ACE way to
// do that . . .
ACE_hthread_t thr_handle;
ACE_OS::thr_self (thr_handle);
int prio;
// thr_getprio () on the current thread should never fail.
ACE_OS::thr_getprio (thr_handle, prio);
// ACE_OS::thr_setprio () has the special logic to set the LWP priority,
// if running in the RT class.
ACE_OS::thr_setprio (prio);
#endif /* ACE_NEEDS_LWP_PRIO_SET */
void *status = 0;
ACE_SEH_TRY
{
ACE_SEH_TRY
{
ACE_Thread_Hook *hook =
ACE_OS_Object_Manager::thread_hook ();
if (hook)
// Invoke the start hook to give the user a chance to
// perform some initialization processing before the
// <func> is invoked.
status = hook->start (ACE_reinterpret_cast (ACE_THR_FUNC, func),
arg);
else
{
// Call thread entry point.
#if defined (ACE_PSOS)
(*func) (arg);
#else /* ! ACE_PSOS */
status = ACE_reinterpret_cast (void *, (*func) (arg));
#endif /* ACE_PSOS */
}
#if defined (ACE_PSOS)
// pSOS task functions do not return a value.
status = 0;
#endif /* ACE_PSOS */
}
#if defined (ACE_HAS_WIN32_STRUCTURAL_EXCEPTIONS)
ACE_SEH_EXCEPT (ACE_OS_Object_Manager::seh_except_selector ()(
(void *) GetExceptionInformation ()))
{
ACE_OS_Object_Manager::seh_except_handler ()(0);
}
#endif /* ACE_HAS_WIN32_STRUCTURAL_EXCEPTIONS */
}
ACE_SEH_FINALLY
{
// If we changed this to 1, change the respective if in
// Task::svc_run to 0.
#if 0
// Call the <Task->close> hook.
if (func == ACE_reinterpret_cast (ACE_THR_FUNC_INTERNAL,
ACE_Task_Base::svc_run))
{
ACE_Task_Base *task_ptr = (ACE_Task_Base *) arg;
ACE_Thread_Manager *thr_mgr_ptr = task_ptr->thr_mgr ();
// This calls the Task->close () hook.
task_ptr->cleanup (task_ptr, 0);
// This prevents a second invocation of the cleanup code
// (called later by <ACE_Thread_Manager::exit>.
thr_mgr_ptr->at_exit (task_ptr, 0, 0);
}
#endif /* 0 */
#if defined (ACE_WIN32) || defined (ACE_HAS_TSS_EMULATION)
# if defined (ACE_WIN32) && defined (ACE_HAS_MFC) && (ACE_HAS_MFC != 0)
int using_afx = -1;
if (thr_desc)
using_afx = ACE_BIT_ENABLED (thr_desc->flags (), THR_USE_AFX);
# endif /* ACE_WIN32 && ACE_HAS_MFC && (ACE_HAS_MFC != 0) */
// Call TSS destructors.
ACE_OS::cleanup_tss (0 /* not main thread */);
# if defined (ACE_WIN32)
// 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 ((DWORD) 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 ((DWORD)status);
}
# else
ACE_ENDTHREADEX (status);
# endif /* ACE_HAS_MFC && ACE_HAS_MFS != 0*/
# endif /* ACE_WIN32 */
#endif /* ACE_WIN32 || ACE_HAS_TSS_EMULATION */
#if defined (ACE_PSOS)
// This sequence of calls is documented by ISI as the proper way to
// clean up a pSOS task. They affect different components, so only
// try the ones for components that are built with ACE.
# if defined (SC_PREPC) && (SC_PREPC == YES)
::fclose (0); // Return pREPC+ resources
# endif /* SC_PREPC */
# if defined (SC_PHILE) && (SC_PHILE == YES)
::close_f (0); // Return pHILE+ resources
# endif /* SC_PHILE */
# if defined (SC_PNA) && (SC_PNA == YES)
::close (0); // Return pNA+ resources
# endif /* SC_PNA */
# if defined (SC_SC_PREPC) && (SC_PREPC == YES)
::free (-1); // Return pREPC+ memory
# endif /* SC_PREPC */
status = ::t_delete (0); // Suicide - only returns on error
#endif /* ACE_PSOS */
return status;
}
ACE_NOTREACHED (return status);
}
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