// PI_Malloc.cpp,v 1.3 2004/01/07 22:40:16 shuston Exp #include "ace/OS_NS_stdio.h" #include "ace/OS_NS_string.h" // Listing 1 code/ch17 #include "ace/Malloc_T.h" #include "ace/Null_Mutex.h" #include "ace/PI_Malloc.h" typedef ACE_Malloc_T <ACE_MMAP_MEMORY_POOL, ACE_Null_Mutex, ACE_PI_Control_Block> ALLOCATOR; typedef ACE_Malloc_LIFO_Iterator_T<ACE_MMAP_MEMORY_POOL, ACE_Null_Mutex, ACE_PI_Control_Block> MALLOC_LIFO_ITERATOR; ALLOCATOR *g_allocator; // Listing 1 // Listing 2 code/ch17 class Record { public: Record (int id1, int id2, char *name) : id1_(id1), id2_(id2) { size_t len = ACE_OS::strlen (name) + 1; char *buf = ACE_reinterpret_cast (char *, g_allocator->malloc (len)); ACE_OS::strcpy (buf, name); name_ = buf; } ~Record() { g_allocator->free (name_.addr ()); } char *name (void) { return name_; } int id1 (void) { return id1_; } int id2 (void) { return id2_; } private: int id1_; int id2_; ACE_Based_Pointer_Basic<char> name_; }; // Listing 2 void showRecords (void) { ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("The following records were found:\n"))); { MALLOC_LIFO_ITERATOR iter (*g_allocator); for (void *temp = 0; iter.next (temp) != 0; iter.advance ()) { Record *record = ACE_reinterpret_cast (Record *, temp); ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Record name: %C|id1:%d|id2:%d\n"), record->name(), record->id1(), record->id2())); } } } int addRecords (void) { char buf[32]; for (int i = 0; i < 10; i++) { ACE_OS::sprintf (buf, "%s:%d", "Record", i); void *memory = g_allocator->malloc (sizeof (Record)); if (memory == NULL) ACE_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("%p\n"), ACE_TEXT ("Unable to malloc")), -1); // Allocate and place record Record* newRecord = new (memory) Record (i, i+1, buf); if (g_allocator->bind (buf, newRecord) == -1) ACE_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("%p\n"), ACE_TEXT ("bind failed")), -1); } return 0; } // Listing 3 code/ch17 // Backing file where the data is kept. #define BACKING_STORE "backing2.store" int ACE_TMAIN (int argc, ACE_TCHAR *[]) { if (argc > 1) { ACE_MMAP_Memory_Pool_Options options (ACE_DEFAULT_BASE_ADDR, ACE_MMAP_Memory_Pool_Options::ALWAYS_FIXED); ACE_NEW_RETURN (g_allocator, ALLOCATOR (BACKING_STORE, BACKING_STORE, &options), -1); ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Mapped to base address %@\n"), g_allocator->base_addr ())); showRecords (); } else { ACE_MMAP_Memory_Pool_Options options (0, ACE_MMAP_Memory_Pool_Options::NEVER_FIXED); ACE_NEW_RETURN (g_allocator, ALLOCATOR (BACKING_STORE, BACKING_STORE, &options), -1); ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Mapped to base address %@\n"), g_allocator->base_addr ())); addRecords(); } g_allocator->sync (); delete g_allocator; return 0; } // Listing 3 #if defined (ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION) template class ACE_Malloc_T <ACE_MMAP_MEMORY_POOL, ACE_Null_Mutex, ACE_PI_Control_Block>; template class ACE_Malloc_FIFO_Iterator_T <ACE_MMAP_MEMORY_POOL, ACE_Null_Mutex, ACE_PI_Control_Block>; template class ACE_Malloc_LIFO_Iterator_T <ACE_MMAP_MEMORY_POOL, ACE_Null_Mutex, ACE_PI_Control_Block>; #elif defined (ACE_HAS_TEMPLATE_INSTANTIATION_PRAGMA) #pragma instantiate ACE_Malloc_T <ACE_MMAP_MEMORY_POOL, ACE_Null_Mutex, ACE_PI_Control_Block> #pragma instantiate ACE_Malloc_FIFO_Iterator_T <ACE_MMAP_MEMORY_POOL, ACE_Null_Mutex, ACE_PI_Control_Block> #pragma instantiate ACE_Malloc_LIFO_Iterator_T <ACE_MMAP_MEMORY_POOL, ACE_Null_Mutex, ACE_PI_Control_Block> #endif /* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */