Peak 0.1.1

1 files changed, 60 insertions, 0 deletions

diff --git a/Fuse/allocators.h b/Fuse/allocators.h
new file mode 100644
index 0000000..d029558
--- /dev/null
+++ b/Fuse/allocators.h
@@ -0,0 +1,60 @@
+#ifndef ALLOCATORS_H
+#define ALLOCATORS_H
+
+#include <stddef.h>
+#include <stdint.h>
+#include <assert.h>
+#include <string.h>
+
+#ifndef DEFAULT_ALIGNMENT 
+#define DEFAULT_ALIGNMENT (2*sizeof(void *))
+#endif
+
+typedef struct Arena {
+    unsigned char *buf;
+    size_t buf_len;
+    size_t curr_offset;
+    size_t prev_offset;
+} Arena;
+
+typedef struct { uint8_t padding; } Stack_Allocation_Header;
+typedef struct Stack {
+    unsigned char *buf;
+    size_t buf_len;
+    size_t offset;
+} Stack;
+
+typedef struct Pool_Free_Node Pool_Free_Node;
+
+typedef struct Pool {
+    unsigned char *buf;
+    size_t chunk_size;
+    size_t pool_size;
+    Pool_Free_Node *head;
+} Pool;
+
+struct Pool_Free_Node { struct Pool_Free_Node *next; };
+
+void      al_arena_create(Arena *a, void *backing_buffer, size_t backing_buffer_length);
+void*     al_arena_alloc_align(Arena *a, size_t s, size_t align);
+void*     al_arena_alloc(Arena *a, size_t s);
+void*     al_arena_resize_align(Arena *a, void *old_memory, size_t old_size, size_t new_size, size_t align);
+void*     al_arena_resize(Arena *a, void *old_memory, size_t old_size, size_t new_size);
+void      al_arena_free_all(Arena *a);
+void      al_arena_destroy(Arena* a);
+
+void      al_stack_create(Stack *s, void *backing_buffer, size_t backing_buffer_length);
+size_t    al_calc_padding_with_header(uintptr_t ptr, uintptr_t alignment, size_t header_size);
+void*     al_stack_alloc(Stack *s, size_t len, size_t alignment);
+void      al_stack_free(Stack *s, void *ptr);
+void      al_stack_free_all(Stack* s);
+void      al_stack_destroy(Stack* s);
+
+void      al_pool_create(Pool *p, void *buf, size_t buf_len, size_t chunk_size, size_t chunk_align);
+void*     al_pool_alloc(Pool *p);
+void      al_pool_free(Pool *p, void *ptr);
+void      al_pool_free_all(Pool *p);
+void      al_pool_destroy(Pool *p);
+
+
+#endif