diff options
Diffstat (limited to 'src/std/scoped_allocator.c')
-rw-r--r-- | src/std/scoped_allocator.c | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/src/std/scoped_allocator.c b/src/std/scoped_allocator.c deleted file mode 100644 index d8acbf6..0000000 --- a/src/std/scoped_allocator.c +++ /dev/null @@ -1,110 +0,0 @@ -#include "../../include/std/scoped_allocator.h" -#include "../../include/std/alloc.h" -#include "../../include/std/thread.h" -#include "../../include/std/log.h" -#include <assert.h> - -#define ALLOC_NODE_SIZE 4096 - -int scoped_allocator_node_init(ScopedAllocatorNode *self) { - self->data = NULL; - self->size = 0; - self->next = NULL; - return am_malloc(ALLOC_NODE_SIZE, (void**)&self->data); -} - -void scoped_allocator_node_deinit(ScopedAllocatorNode *self) { - am_free(self->data); - self->data = NULL; - self->size = 0; - if(self->next) { - scoped_allocator_node_deinit(self->next); - am_free(self->next); - self->next = NULL; - } -} - -int scoped_allocator_init(ScopedAllocator *self) { - return_if_error(scoped_allocator_node_init(&self->head)); - self->current = &self->head; - return buffer_init(&self->mems, NULL); -} - -static void scoped_allocator_deinit_buffers(ScopedAllocator *self) { - void **mem; - void **mems_end; - mem = buffer_begin(&self->mems); - mems_end = buffer_end(&self->mems); - while(mem != mems_end) { - am_free(*mem); - ++mem; - } - buffer_deinit(&self->mems); -} - -void scoped_allocator_deinit(ScopedAllocator *self) { - self->current = NULL; - scoped_allocator_deinit_buffers(self); - scoped_allocator_node_deinit(&self->head); -} - -static CHECK_RESULT int scoped_allocator_ensure_capacity_for(ScopedAllocator *self, usize size) { - void *new_node; - new_node = NULL; - - if(self->current->size + size > ALLOC_NODE_SIZE) { - return_if_error(am_malloc(sizeof(ScopedAllocatorNode), &new_node)); - cleanup_if_error(scoped_allocator_node_init(new_node)); - self->current->next = new_node; - self->current = new_node; - } - return ALLOC_OK; - - cleanup: - if(new_node) - am_free(new_node); - return ALLOC_FAIL; -} - -static void* align_ptr_ceil(void *ptr, uintptr_t alignment) { - uintptr_t ptrval; - ptrval = (uintptr_t)ptr; - return (void*)((ptrval + alignment + 1) & ~(alignment - 1)); -} - -static usize align_ptr_ceil_offset(void *ptr, uintptr_t alignment) { - return (uintptr_t)align_ptr_ceil(ptr, alignment) - (uintptr_t)ptr; -} - -#define SCOPED_ALLOC_ALIGNMENT 8 - -int scoped_allocator_alloc(ScopedAllocator *self, usize size, void **mem) { - ScopedAllocatorNode *current; - usize alloc_size; - assert(self->current); - current = self->current; - - if(size >= ALLOC_NODE_SIZE) { - amal_log_error("scoped_allocator_alloc: tried to alloc memory of size %lu. Max allowed alloc size is %lu", size, ALLOC_NODE_SIZE); - return -1; - } - - alloc_size = size + align_ptr_ceil_offset(self->current->data + self->current->size, SCOPED_ALLOC_ALIGNMENT); - return_if_error(scoped_allocator_ensure_capacity_for(self, alloc_size)); - /* Reallocated (new node created) */ - if(self->current != current) { - *mem = self->current->data; - self->current->size += size; - } else { - *mem = align_ptr_ceil(self->current->data + self->current->size, SCOPED_ALLOC_ALIGNMENT); - self->current->size += alloc_size; - } - return 0; -} - -int scoped_allocator_add_mem(ScopedAllocator *self, usize *result_index) { - void *null_data; - null_data = NULL; - *result_index = buffer_get_size(&self->mems, sizeof(void*)); - return buffer_append(&self->mems, &null_data, sizeof(void*)); -} |