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return nil;
}
- (void*)getMemWithSize: (size_t)size
{
struct __ofobject_allocated_mem *iter;
if ((iter = malloc(sizeof(struct __ofobject_allocated_mem))) == NULL) {
[[OFNoMemException newWithObject: self
andSize: sizeof(struct
__ofobject_allocated_mem)
] raise];
return NULL;
return NULL;
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return nil;
}
- (void*)getMemWithSize: (size_t)size
{
struct __ofobject_allocated_mem *iter;
if (size == 0)
return NULL;
if ((iter = malloc(sizeof(struct __ofobject_allocated_mem))) == NULL) {
[[OFNoMemException newWithObject: self
andSize: sizeof(struct
__ofobject_allocated_mem)
] raise];
}
if ((iter->ptr = malloc(size)) == NULL) {
free(iter);
[[OFNoMemException newWithObject: self
andSize: size] raise];
}
iter->next = NULL;
iter->prev = __mem_pool;
if (__mem_pool != NULL)
__mem_pool->next = iter;
__mem_pool = iter;
return iter->ptr;
}
- (void*)getMemForNItems: (size_t)nitems
ofSize: (size_t)size
{
size_t memsize;
if (nitems == 0 || size == 0)
return NULL;
if (size > SIZE_MAX / nitems)
[[OFOverflowException newWithObject: self] raise];
memsize = nitems * size;
return [self getMemWithSize: memsize];
}
- (void*)resizeMem: (void*)ptr
toSize: (size_t)size
{
struct __ofobject_allocated_mem *iter;
if (ptr == NULL)
return [self getMemWithSize: size];
if (size == 0) {
[self freeMem: ptr];
return NULL;
}
for (iter = __mem_pool; iter != NULL; iter = iter->prev) {
if (iter->ptr == ptr) {
if ((ptr = realloc(iter->ptr, size)) == NULL)
[[OFNoMemException newWithObject: self
andSize: size] raise];
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}
- (void*)resizeMem: (void*)ptr
toNItems: (size_t)nitems
ofSize: (size_t)size
{
size_t memsize;
if (size > SIZE_MAX / nitems)
[[OFOverflowException newWithObject: self] raise];
memsize = nitems * size;
return [self resizeMem: ptr
toSize: memsize];
}
- freeMem: (void*)ptr;
{
struct __ofobject_allocated_mem *iter;
for (iter = __mem_pool; iter != NULL; iter = iter->prev) {
if (iter->ptr == ptr) {
if (iter->prev != NULL)
iter->prev->next = iter->next;
if (iter->next != NULL)
iter->next->prev = iter->prev;
if (__mem_pool == iter)
__mem_pool = NULL;
free(iter);
free(ptr);
return self;
}
}
[[OFMemNotPartOfObjException newWithObject: self
andPointer: ptr] raise];
return self /* never reached, but makes gcc happy */;
}
@end
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}
- (void*)resizeMem: (void*)ptr
toNItems: (size_t)nitems
ofSize: (size_t)size
{
size_t memsize;
if (ptr == NULL)
return [self getMemForNItems: nitems
ofSize: size];
if (nitems == 0 || size == 0) {
[self freeMem: ptr];
return NULL;
}
if (size > SIZE_MAX / nitems)
[[OFOverflowException newWithObject: self] raise];
memsize = nitems * size;
return [self resizeMem: ptr
toSize: memsize];
}
- freeMem: (void*)ptr;
{
struct __ofobject_allocated_mem *iter;
for (iter = __mem_pool; iter != NULL; iter = iter->prev) {
if (iter->ptr == ptr) {
if (iter->prev != NULL)
iter->prev->next = iter->next;
if (iter->next != NULL)
iter->next->prev = iter->prev;
if (__mem_pool == iter)
__mem_pool = iter->prev;
free(iter);
free(ptr);
return self;
}
}
[[OFMemNotPartOfObjException newWithObject: self
andPointer: ptr] raise];
return self /* never reached, but makes gcc happy */;
}
@end
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