| // 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 |
| |
| #ifndef ZIRCON_KERNEL_LIB_HEAP_INCLUDE_LIB_HEAP_H_ |
| #define ZIRCON_KERNEL_LIB_HEAP_INCLUDE_LIB_HEAP_H_ |
| |
| #include <stddef.h> |
| #include <sys/types.h> |
| #include <zircon/compiler.h> |
| |
| __BEGIN_CDECLS |
| |
| // The underlying cmpctmalloc allocator defaults to 8 byte alignment. |
| #define HEAP_DEFAULT_ALIGNMENT 8 |
| |
| #ifdef _KERNEL |
| |
| // 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 __ALLOC_SIZE(1); |
| void* memalign(size_t alignment, size_t size) __MALLOC __ALLOC_SIZE(2); |
| void* calloc(size_t count, size_t size) __MALLOC __ALLOC_SIZE(1, 2); |
| void free(void* ptr); |
| void sized_free(void* ptr, size_t s); |
| |
| // Gets stats about the heap. |
| // |total_bytes| is the total size of the heap (the sum of all pages allocated |
| // from the PMM), |free_bytes| is the free portion. |
| void heap_get_info(size_t* total_bytes, size_t* free_bytes); |
| |
| // called once at kernel initialization |
| void heap_init(void); |
| |
| #endif // _KERNEL |
| |
| __END_CDECLS |
| |
| #endif // ZIRCON_KERNEL_LIB_HEAP_INCLUDE_LIB_HEAP_H_ |