// $Id$ #if !defined (ACE_MAP_MANAGER_C) #define ACE_MAP_MANAGER_C #define ACE_BUILD_DLL #include "ace/Synch.h" #include "ace/Malloc.h" #include "ace/Service_Config.h" #include "ace/Map_Manager.h" #if !defined (__ACE_INLINE__) #include "ace/Map_Manager.i" #endif /* __ACE_INLINE__ */ ACE_RCSID(ace, Map_Manager, "$Id$") ACE_ALLOC_HOOK_DEFINE(ACE_Map_Entry) # if ! defined (ACE_HAS_BROKEN_NOOP_DTORS) template ACE_Map_Entry::~ACE_Map_Entry (void) { // No-op just to keep some compilers happy... } #endif /* ! defined (ACE_HAS_BROKEN_NOOP_DTORS) */ template void ACE_Map_Entry::dump (void) const { ACE_TRACE ("ACE_Map_Entry::dump"); ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this)); ACE_DEBUG ((LM_DEBUG, ASYS_TEXT ("is_free_ = %d"), this->is_free_)); ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP)); } ACE_ALLOC_HOOK_DEFINE(ACE_Map_Manager) template void ACE_Map_Manager::dump (void) const { ACE_TRACE ("ACE_Map_Manager::dump"); ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this)); ACE_DEBUG ((LM_DEBUG, ASYS_TEXT ("total_size_ = %d"), this->total_size_)); ACE_DEBUG ((LM_DEBUG, ASYS_TEXT ("\ncur_size_ = %d"), this->cur_size_)); this->allocator_->dump (); this->lock_.dump (); ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP)); } template ACE_Map_Manager::ACE_Map_Manager (size_t size, ACE_Allocator *alloc) : search_structure_ (0), allocator_ (0), total_size_ (0), cur_size_ (0) { ACE_TRACE ("ACE_Map_Manager::ACE_Map_Manager"); if (this->open (size, alloc) == -1) ACE_ERROR ((LM_ERROR, ASYS_TEXT ("ACE_Map_Manager\n"))); } template ACE_Map_Manager::ACE_Map_Manager (ACE_Allocator *alloc) : search_structure_ (0), allocator_ (0), total_size_ (0), cur_size_ (0) { ACE_TRACE ("ACE_Map_Manager::ACE_Map_Manager"); if (this->open (ACE_DEFAULT_MAP_SIZE, alloc) == -1) ACE_ERROR ((LM_ERROR, ASYS_TEXT ("ACE_Map_Manager\n"))); } template int ACE_Map_Manager::close_i (void) { ACE_TRACE ("ACE_Map_Manager::close_i"); this->free_search_structure (); this->total_size_ = 0; this->cur_size_ = 0; return 0; } template int ACE_Map_Manager::close (void) { ACE_TRACE ("ACE_Map_Manager::close"); ACE_WRITE_GUARD_RETURN (ACE_LOCK, ace_mon, this->lock_, -1); return this->close_i (); } template ACE_Map_Manager::~ACE_Map_Manager (void) { ACE_TRACE ("ACE_Map_Manager::~ACE_Map_Manager"); this->close (); } template int ACE_Map_Manager::resize_i (size_t size) { ACE_TRACE ("ACE_Map_Manager::resize_i"); // If we need to grow buffer, then remove the existing buffer. void *ptr; ACE_ALLOCATOR_RETURN (ptr, this->allocator_->malloc (size * sizeof (ACE_Map_Entry)), -1); size_t i; ACE_Map_Entry *temp = (ACE_Map_Entry *) ptr; // Copy over the currently active elements. for (i = 0; i < this->cur_size_; i++) { temp[i] = this->search_structure_[i]; // Structure assignment. } this->total_size_ = size; // Mark the newly allocated elements as being "free". for (i = this->cur_size_; i < this->total_size_; i++) { // Call the constructor for each element in the array. Note // that this requires a default constructor for and // . new (&(temp[i])) ACE_Map_Entry; temp[i].is_free_ = 1; } this->free_search_structure (); this->search_structure_ = temp; return 0; } template ACE_Map_Iterator ACE_Map_Manager::begin (void) { return ACE_Map_Iterator (*this); } template ACE_Map_Iterator ACE_Map_Manager::end (void) { return ACE_Map_Iterator (*this, 1); } template ACE_Map_Reverse_Iterator ACE_Map_Manager::rbegin (void) { return ACE_Map_Reverse_Iterator (*this); } template ACE_Map_Reverse_Iterator ACE_Map_Manager::rend (void) { return ACE_Map_Reverse_Iterator (*this, 1); } template void ACE_Map_Manager::free_search_structure (void) { if (this->search_structure_ != 0) { for (size_t i = 0; i < this->total_size_; i++) // Explicitly call the destructor. { ACE_Map_Entry *ss = &this->search_structure_[i]; // The "if" second argument results in a no-op instead of // deallocation. ACE_DES_FREE_TEMPLATE2 (ss, ACE_NOOP, ACE_Map_Entry, EXT_ID, INT_ID); } // Actually free the memory. this->allocator_->free (this->search_structure_); this->search_structure_ = 0; } } // Create a new search_structure of size SIZE. template int ACE_Map_Manager::open (size_t size, ACE_Allocator *alloc) { ACE_TRACE ("ACE_Map_Manager::open"); ACE_WRITE_GUARD_RETURN (ACE_LOCK, ace_mon, this->lock_, -1); if (alloc == 0) alloc = ACE_Allocator::instance (); this->allocator_ = alloc; // This assertion is here to help track a situation that shouldn't happen ACE_ASSERT (size != 0); return this->resize_i (size); } template int ACE_Map_Manager::shared_find (const EXT_ID &ext_id, int &first_free) { // See if the entry is already there, keeping track of the first // free slot. for (size_t i = 0; i < this->cur_size_; i++) { ACE_Map_Entry &ss = this->search_structure_[i]; if (ss.is_free_ == 0) { if (ss.ext_id_ == ext_id) return i; } else if (first_free == -1) first_free = int (i); } errno = ENOENT; return -1; } template int ACE_Map_Manager::equal (const EXT_ID &id1, const EXT_ID &id2) { return id1 == id2; } // Find the corresponding to the . template int ACE_Map_Manager::shared_find (const EXT_ID &ext_id) { ACE_TRACE ("ACE_Map_Manager::shared_find"); for (size_t i = 0; i < this->cur_size_; i++) { const ACE_Map_Entry &ss = this->search_structure_[i]; if (ss.is_free_ == 0 && this->equal (ss.ext_id_, ext_id)) // We found it! return i; } // not found errno = ENOENT; return -1; } template int ACE_Map_Manager::shared_bind (const EXT_ID &ext_id, const INT_ID &int_id, int first_free) { if (first_free > -1) { // We found a free spot, let's reuse it. ACE_Map_Entry &ss = this->search_structure_[first_free]; ss.ext_id_ = ext_id; ss.int_id_ = int_id; ss.is_free_ = 0; this->allocator_->sync ((void *) &this->search_structure_[first_free], sizeof ss); return 0; } // Check if we have reached total_size_ else if (this->cur_size_ == this->total_size_) // We are out of room so grow the map if (this->resize_i (this->total_size_ + ACE_DEFAULT_MAP_SIZE) == -1) return -1; // Insert at the end of the active portion. ACE_Map_Entry &ss = this->search_structure_[this->cur_size_]; ss.int_id_ = int_id; ss.ext_id_ = ext_id; ss.is_free_ = 0; this->allocator_->sync ((void *) &this->search_structure_[this->cur_size_], sizeof ss); this->cur_size_++; this->allocator_->sync ((void *) &this->cur_size_, sizeof this->cur_size_); return 0; } template int ACE_Map_Manager::trybind_i (const EXT_ID &ext_id, INT_ID &int_id) { ACE_TRACE ("ACE_Map_Manager::trybind_i"); int first_free = -1; int index = this->shared_find (ext_id, first_free); if (index >= 0) { // There was already something there, so make a copy, but // *don't* update anything in the map! int_id = this->search_structure_[index].int_id_; return 1; } else // We didn't find it, so let's bind it! return this->shared_bind (ext_id, int_id, first_free); } template int ACE_Map_Manager::trybind (const EXT_ID &ext_id, INT_ID &int_id) { ACE_TRACE ("ACE_Map_Manager::trybind"); ACE_WRITE_GUARD_RETURN (ACE_LOCK, ace_mon, this->lock_, -1); return this->trybind_i (ext_id, int_id); } template int ACE_Map_Manager::find_i (const EXT_ID &ext_id) { ACE_TRACE ("ACE_Map_Manager::find_i"); return this->shared_find (ext_id); } // Find the INT_ID corresponding to the EXT_ID. template int ACE_Map_Manager::find (const EXT_ID &ext_id) { ACE_TRACE ("ACE_Map_Manager::find"); ACE_READ_GUARD_RETURN (ACE_LOCK, ace_mon, this->lock_, -1); return this->find_i (ext_id); } // Unbind (remove) the EXT_ID from the map and return it via an out // parameter. Note that this method does *not* free up the INT_ID // structure. Thus, if there is dynamic memory associated with this, // the caller is responsible for freeing this memory. template int ACE_Map_Manager::unbind_i (const EXT_ID &ext_id, INT_ID &int_id) { ACE_TRACE ("ACE_Map_Manager::unbind_i"); ssize_t index = this->shared_unbind (ext_id); if (index == -1) return -1; else { int_id = this->search_structure_[index].int_id_; return 0; } } // Associate with . If is already in the // map then the is not changed. Returns 0 if a new // entry is bound successfully, returns 1 if an attempt is made to // bind an existing entry, and returns -1 if failures occur. template int ACE_Map_Manager::bind_i (const EXT_ID &ext_id, const INT_ID &int_id) { ACE_TRACE ("ACE_Map_Manager::bind_i"); int first_free = -1; // We need to save errno since may set errno to // ENOENT. int error = errno; int index = this->shared_find (ext_id, first_free); if (index >= 0) // It was already bound, so return 1. return 1; else { // Restore errno. errno = error; // We didn't find it, so let's bind it! return this->shared_bind (ext_id, int_id, first_free); } } // Associate with . If is not in the // map then behaves just like . Otherwise, store the old // values of and into the "out" parameters and // rebind the new parameters. This is very useful if you need to // have an atomic way of updating and you also need // full control over memory allocation. Returns 0 if a new entry is // bound successfully, returns 1 if an existing entry was rebound, // and returns -1 if failures occur. template int ACE_Map_Manager::rebind_i (const EXT_ID &ext_id, const INT_ID &int_id, EXT_ID &old_ext_id, INT_ID &old_int_id) { ACE_TRACE ("ACE_Map_Manager::rebind_i"); int first_free = -1; int index = this->shared_find (ext_id, first_free); if (index >= 0) { // We found it, so make copies of the old entries and rebind // current entries. ACE_Map_Entry &ss = this->search_structure_[index]; old_ext_id = ss.ext_id_; old_int_id = ss.int_id_; ss.ext_id_ = ext_id; ss.int_id_ = int_id; this->allocator_->sync ((void *) &this->search_structure_[index], sizeof ss); return 1; } else // We didn't find it, so let's bind it! return this->shared_bind (ext_id, int_id, first_free); } // Find the INT_ID corresponding to the EXT_ID. template int ACE_Map_Manager::find_i (const EXT_ID &ext_id, INT_ID &int_id) { ACE_TRACE ("ACE_Map_Manager::find_i"); int index = this->shared_find (ext_id); if (index == -1) // Didn't find it. return -1; else { // Found it, so assign a copy. int_id = this->search_structure_[index].int_id_; return index; } } // Unbind (remove) the EXT_ID from the map. Keeps track of where // the EXT_ID was found so that this->unbind (EXT_ID, INT_ID) // can return it to the caller. template int ACE_Map_Manager::shared_unbind (const EXT_ID &ext_id) { ACE_TRACE ("ACE_Map_Manager::shared_unbind"); for (size_t i = 0; i < this->cur_size_; i++) { ACE_Map_Entry &ss = this->search_structure_[i]; if (ss.is_free_ == 0 && this->equal (ss.ext_id_, ext_id)) { size_t index = i; // Mark this entry as being free. ss.is_free_ = 1; this->allocator_->sync ((void *) &ss.is_free_, sizeof ss.is_free_); // If we just unbound the highest active entry, then we need // to figure out where the next highest active entry is. if (i + 1 == this->cur_size_) { while (i > 0 && this->search_structure_[--i].is_free_) continue; if (i == 0 && this->search_structure_[i].is_free_) this->cur_size_ = 0; else this->cur_size_ = i + 1; this->allocator_->sync ((void *) &this->cur_size_, sizeof this->cur_size_); } return index; } } errno = ENOENT; return -1; } template int ACE_Map_Manager::unbind (const EXT_ID &ext_id, INT_ID &int_id) { ACE_TRACE ("ACE_Map_Manager::unbind"); ACE_WRITE_GUARD_RETURN (ACE_LOCK, ace_mon, this->lock_, -1); return this->unbind_i (ext_id, int_id); } template int ACE_Map_Manager::bind (const EXT_ID &ext_id, const INT_ID &int_id) { ACE_TRACE ("ACE_Map_Manager::bind"); ACE_WRITE_GUARD_RETURN (ACE_LOCK, ace_mon, this->lock_, -1); return this->bind_i (ext_id, int_id); } template int ACE_Map_Manager::rebind (const EXT_ID &ext_id, const INT_ID &int_id, EXT_ID &old_ext_id, INT_ID &old_int_id) { ACE_TRACE ("ACE_Map_Manager::rebind"); ACE_WRITE_GUARD_RETURN (ACE_LOCK, ace_mon, this->lock_, -1); return this->rebind_i (ext_id, int_id, old_ext_id, old_int_id); } template int ACE_Map_Manager::find (const EXT_ID &ext_id, INT_ID &int_id) { ACE_TRACE ("ACE_Map_Manager::find"); ACE_READ_GUARD_RETURN (ACE_LOCK, ace_mon, this->lock_, -1); return this->find_i (ext_id, int_id); } // Unbind (remove) the EXT_ID from the map. Don't return the INT_ID // to the caller (this is useful for collections where the INT_IDs are // *not* dynamically allocated...) template int ACE_Map_Manager::unbind_i (const EXT_ID &ext_id) { ACE_TRACE ("ACE_Map_Manager::unbind_i"); return this->shared_unbind (ext_id) == -1 ? -1 : 0; } template int ACE_Map_Manager::unbind (const EXT_ID &ext_id) { ACE_TRACE ("ACE_Map_Manager::unbind"); ACE_WRITE_GUARD_RETURN (ACE_LOCK, ace_mon, this->lock_, -1); return this->unbind_i (ext_id) == -1 ? -1 : 0; } template size_t ACE_Map_Manager::current_size (void) { ACE_TRACE ("ACE_Map_Manager::current_size"); ACE_WRITE_GUARD_RETURN (ACE_LOCK, ace_mon, this->lock_, ACE_static_cast(size_t, -1)); return this->cur_size_; } template size_t ACE_Map_Manager::total_size (void) { ACE_TRACE ("ACE_Map_Manager::total_size"); ACE_WRITE_GUARD_RETURN (ACE_LOCK, ace_mon, this->lock_, ACE_static_cast (size_t, -1)); return this->total_size_; } template ACE_LOCK & ACE_Map_Manager::mutex (void) { ACE_TRACE ("ACE_Map_Manager::mutex"); return this->lock_; } // @@ && @@ ACE_ALLOC_HOOK_DEFINE(ACE_Map_Iterator_Base) template void ACE_Map_Iterator_Base::dump_i (void) const { ACE_TRACE ("ACE_Map_Iterator_Base::dump"); ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this)); ACE_DEBUG ((LM_DEBUG, ASYS_TEXT ("next_ = %d"), this->next_)); ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP)); } template ACE_Map_Iterator_Base::ACE_Map_Iterator_Base (ACE_Map_Manager &mm, int head) : map_man_ (&mm), next_ (-1) { ACE_TRACE ("ACE_Map_Iterator_Base::ACE_Map_Iterator_Base"); if (head == 0) this->next_ = this->map_man_->cur_size_; } template int ACE_Map_Iterator_Base::next (ACE_Map_Entry *&mm) { ACE_TRACE ("ACE_Map_Iterator_Base::next"); ACE_READ_GUARD_RETURN (ACE_LOCK, ace_mon, this->map_man_->lock_, -1); if (this->map_man_->search_structure_ != 0 // Note that this->next_ is never negative at this point... && ACE_static_cast(size_t, this->next_) < this->map_man_->cur_size_ && this->next_ > -1) { mm = &this->map_man_->search_structure_[this->next_]; return 1; } else return 0; } template int ACE_Map_Iterator_Base::done (void) const { ACE_TRACE ("ACE_Map_Iterator_Base::done"); ACE_READ_GUARD_RETURN (ACE_LOCK, ace_mon, this->map_man_->lock_, -1); return this->map_man_->search_structure_ == 0 // Note that this->next_ is never negative at this point... || ACE_static_cast (ACE_CAST_CONST size_t, this->next_) >= this->map_man_->cur_size_ || this->next_ <= -1; } template int ACE_Map_Iterator_Base::forward_i (void) { ACE_TRACE ("ACE_Map_Iterator_Base::forward_i"); ACE_READ_GUARD_RETURN (ACE_LOCK, ace_mon, this->map_man_->lock_, -1); for (++this->next_; ACE_static_cast(size_t, this->next_) < this->map_man_->cur_size_ && this->map_man_->search_structure_[this->next_].is_free_; this->next_++) continue; return ACE_static_cast(size_t, this->next_) < this->map_man_->cur_size_; } template int ACE_Map_Iterator_Base::reverse_i (void) { ACE_TRACE ("ACE_Map_Iterator_Base::reverse_i"); ACE_READ_GUARD_RETURN (ACE_LOCK, ace_mon, this->map_man_->lock_, -1); for (--this->next_; this->next_ >= 0 && this->map_man_->search_structure_[this->next_].is_free_; this->next_--) continue; return this->next_ >= 0; } template ACE_Map_Entry& ACE_Map_Iterator_Base::operator* (void) { ACE_TRACE ("ACE_Map_Iterator_Base::operator*"); ACE_Map_Entry *retv = 0; ACE_ASSERT (this->next (retv) != 0); return *retv; } // Returns the reference to the map_manager that is being // iterated over. template ACE_Map_Manager& ACE_Map_Iterator_Base::map (void) { ACE_TRACE ("ACE_Map_Iterator_Base::map"); return *this->map_man_; } template int ACE_Map_Iterator_Base::operator== (const ACE_Map_Iterator_Base &rhs) const { ACE_TRACE ("ACE_Map_Iterator_Base::operator=="); return (this->map_man_ == rhs.map_man_ && this->next_ == rhs.next_); } template int ACE_Map_Iterator_Base::operator!= (const ACE_Map_Iterator_Base &rhs) const { ACE_TRACE ("ACE_Map_Iterator_Base::operator!="); return (this->next_ != rhs.next_ || this->map_man_ != rhs.map_man_); } ACE_ALLOC_HOOK_DEFINE(ACE_Map_Iterator) template void ACE_Map_Iterator::dump (void) const { ACE_TRACE ("ACE_Map_Iterator::dump"); this->dump_i (); } template ACE_Map_Iterator::ACE_Map_Iterator (ACE_Map_Manager &mm, int tail) : ACE_Map_Iterator_Base (mm, (tail == 0 ? 1 : 0)) { ACE_TRACE ("ACE_Map_Iterator::ACE_Map_Iterator"); if (tail == 0 && this->map_man_->search_structure_ != 0) this->forward_i (); } template int ACE_Map_Iterator::advance (void) { ACE_TRACE ("ACE_Map_Iterator::advance"); return this->forward_i (); } template ACE_Map_Iterator ACE_Map_Iterator::operator++ (void) { ACE_TRACE ("ACE_Map_Iterator::operator++ (void)"); ACE_Map_Iterator retv (*this); this->forward_i (); return retv; } template ACE_Map_Iterator& ACE_Map_Iterator::operator++ (int) { ACE_TRACE ("ACE_Map_Iterator::operator++ (int)"); this->forward_i (); return *this; } template ACE_Map_Iterator ACE_Map_Iterator::operator-- (void) { ACE_TRACE ("ACE_Map_Iterator::operator-- (void)"); ACE_Map_Iterator retv (*this); this->reverse_i (); return retv; } template ACE_Map_Iterator& ACE_Map_Iterator::operator-- (int) { ACE_TRACE ("ACE_Map_Iterator::operator-- (int)"); this->reverse_i (); return *this; } ACE_ALLOC_HOOK_DEFINE(ACE_Map_Reverse_Iterator) template void ACE_Map_Reverse_Iterator::dump (void) const { ACE_TRACE ("ACE_Map_Reverse_Iterator::dump"); this->dump_i (); } template ACE_Map_Reverse_Iterator::ACE_Map_Reverse_Iterator (ACE_Map_Manager &mm, int head) : ACE_Map_Iterator_Base (mm, head) { ACE_TRACE ("ACE_Map_Reverse_Iterator::ACE_Map_Reverse_Iterator"); if (head == 0 && this->map_man_->search_structure_ != 0) this->reverse_i (); } template int ACE_Map_Reverse_Iterator::advance (void) { ACE_TRACE ("ACE_Map_Reverse_Iterator::advance"); return this->reverse_i (); } template ACE_Map_Reverse_Iterator ACE_Map_Reverse_Iterator::operator++ (void) { ACE_TRACE ("ACE_Map_Reverse_Iterator::operator++ (void)"); ACE_Map_Reverse_Iterator retv (*this); this->reverse_i (); return retv; } template ACE_Map_Reverse_Iterator& ACE_Map_Reverse_Iterator::operator++ (int) { ACE_TRACE ("ACE_Map_Reverse_Iterator::operator++ (int)"); this->reverse_i (); return *this; } template ACE_Map_Reverse_Iterator ACE_Map_Reverse_Iterator::operator-- (void) { ACE_TRACE ("ACE_Map_Reverse_Iterator::operator-- (void)"); ACE_Map_Reverse_Iterator retv (*this); this->forward_i (); return retv; } template ACE_Map_Reverse_Iterator& ACE_Map_Reverse_Iterator::operator-- (int) { ACE_TRACE ("ACE_Map_Reverse_Iterator::operator-- (int)"); this->forward_i (); return *this; } #endif /* ACE_MAP_MANAGER_C */