56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
#include "allocator.h"
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void *buffer_allocator_alloc(buffer_allocator_t *this, size_t bytes) {
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size_t new_size = this->size + bytes;
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if (new_size > this->capacity) {
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return NULL;
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}
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void *ptr = &this->data[this->size]
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this->size = new_size;
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return ptr;
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}
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void *buffer_allocator_resize(buffer_allocator_t *this, void *old_ptr, size_t bytes) {
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// TODO: check if the pointer is even in the buffer?
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void *new_ptr = buffer_allocator_alloc(this, bytes);
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if (new_ptr == NULL) {
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return NULL;
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}
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// TODO: copy over data
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}
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void buffer_allocator_reset(buffer_allocator_t *this) {
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this->size = 0;
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}
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static void *buffer_alloc(void *this, size_t bytes, const char *file, int line) {
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(void)file;
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(void)line;
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return buffer_allocator_alloc((buffer_allocator_t *)this, bytes);
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}
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static void *buffer_resize(void *this, void *old_ptr, size_t bytes, const char *file, int line) {
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(void)old_ptr;
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(void)file;
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(void)line;
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// TODO: do the concrete implementation first!
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void *new_ptr = buffer_allocator_alloc((buffer_allocator_t *)this, bytes);
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}
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static void buffer_free(void *this, void *ptr, const char *file, int line) {
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(void)this;
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(void)ptr;
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(void)file;
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(void)line;
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}
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static const allocator_vtbl_t buffer_vtbl = {
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.alloc = buffer_alloc,
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.resize = buffer_resize,
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.free = buffer_free,
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};
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allocator_t buffer_allocator_interface(buffer_allocator_t *this) {
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}
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