| // Copyright 2016 The Fuchsia Authors |
| // Copyright (c) 2008-2015 Travis Geiselbrecht |
| // |
| // Use of this source code is governed by a MIT-style |
| // license that can be found in the LICENSE file or at |
| // https://opensource.org/licenses/MIT |
| |
| #pragma once |
| |
| #include <stddef.h> |
| #include <sys/types.h> |
| #include <zircon/compiler.h> |
| |
| __BEGIN_CDECLS |
| |
| // define this to enable collection of all unique call sites with unique sizes |
| #define HEAP_COLLECT_STATS 0 |
| |
| // standard heap definitions |
| void *malloc(size_t size) __MALLOC; |
| void *memalign(size_t boundary, size_t size) __MALLOC; |
| void *calloc(size_t count, size_t size) __MALLOC; |
| void *realloc(void *ptr, size_t size); |
| void free(void *ptr); |
| |
| // inner function used when stats gathering is enabled |
| void *malloc_debug_caller_(size_t size, void *caller); |
| |
| // alternate version of malloc where the caller is passed in |
| __MALLOC static inline void *malloc_debug_caller(size_t size, void *caller) { |
| if (HEAP_COLLECT_STATS) { |
| return malloc_debug_caller_(size, caller); |
| } else { |
| return malloc(size); |
| } |
| } |
| |
| // tell the heap to return any free pages it can find |
| void heap_trim(void); |
| |
| // internal apis used by the heap implementation to get/return pages to the VM |
| void *heap_page_alloc(size_t pages); |
| void heap_page_free(void *ptr, size_t pages); |
| |
| // Gets stats about the heap. |
| // |size_bytes| is the total size of the heap, |free_bytes| is the free portion. |
| void heap_get_info(size_t *size_bytes, size_t *free_bytes); |
| |
| // called once at kernel initialization |
| void heap_init(void); |
| |
| __END_CDECLS |