15 #include "deletedBufferChain.h" 16 #include "memoryHook.h" 25 DeletedBufferChain(
size_t buffer_size) {
26 _deleted_chain = NULL;
27 _buffer_size = buffer_size;
31 _buffer_size = max(_buffer_size,
sizeof(ObjectNode));
43 #ifdef USE_DELETED_CHAIN 45 assert(size <= _buffer_size);
48 const size_t alloc_size = _buffer_size + flag_reserved_bytes;
53 if (_deleted_chain != (ObjectNode *)NULL) {
55 _deleted_chain = _deleted_chain->_next;
58 #ifdef USE_DELETEDCHAINFLAG 59 assert(obj->_flag == (AtomicAdjust::Integer)DCF_deleted);
60 obj->_flag = DCF_alive;
61 #endif // USE_DELETEDCHAINFLAG 63 void *ptr = node_to_buffer(obj);
65 #ifdef DO_MEMORY_USAGE 67 type_handle.inc_memory_usage(TypeHandle::MC_deleted_chain_active, alloc_size);
68 #endif // DO_MEMORY_USAGE 79 #ifdef USE_DELETEDCHAINFLAG 80 obj->_flag = DCF_alive;
81 #endif // USE_DELETEDCHAINFLAG 83 void *ptr = node_to_buffer(obj);
85 #ifdef DO_MEMORY_USAGE 86 type_handle.inc_memory_usage(TypeHandle::MC_deleted_chain_active, alloc_size);
87 #endif // DO_MEMORY_USAGE 91 #else // USE_DELETED_CHAIN 92 return PANDA_MALLOC_SINGLE(_buffer_size);
93 #endif // USE_DELETED_CHAIN 104 #ifdef USE_DELETED_CHAIN 106 assert(ptr != (
void *)NULL);
108 #ifdef DO_MEMORY_USAGE 109 type_handle.dec_memory_usage(TypeHandle::MC_deleted_chain_active,
110 _buffer_size + flag_reserved_bytes);
114 #endif // DO_MEMORY_USAGE 116 ObjectNode *obj = buffer_to_node(ptr);
118 #ifdef USE_DELETEDCHAINFLAG 122 assert(orig_flag != (AtomicAdjust::Integer)DCF_deleted);
126 assert(orig_flag == (AtomicAdjust::Integer)DCF_alive);
127 #endif // USE_DELETEDCHAINFLAG 131 obj->_next = _deleted_chain;
132 _deleted_chain = obj;
136 #else // USE_DELETED_CHAIN 137 PANDA_FREE_SINGLE(ptr);
138 #endif // USE_DELETED_CHAIN void * allocate(size_t size, TypeHandle type_handle)
Allocates the memory for a new buffer of the indicated size (which must be no greater than the fixed ...
void deallocate(void *ptr, TypeHandle type_handle)
Frees the memory for a buffer previously allocated via allocate().
static void * alloc(size_t size)
Returns a pointer to a newly-allocated block of memory of the indicated size.
TypeHandle is the identifier used to differentiate C++ class types.
static Integer compare_and_exchange(Integer &mem, Integer old_value, Integer new_value)
Atomic compare and exchange.