| /* rpmalloc.h - Memory allocator - Public Domain - 2016 Mattias Jansson / Rampant Pixels |
| * |
| * This library provides a cross-platform lock free thread caching malloc implementation in C11. |
| * The latest source code is always available at |
| * |
| * https://github.com/rampantpixels/rpmalloc |
| * |
| * This library is put in the public domain; you can redistribute it and/or modify it without any restrictions. |
| * |
| */ |
| |
| #pragma once |
| |
| #include <stddef.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #if defined(__clang__) || defined(__GNUC__) |
| # define RPMALLOC_ATTRIBUTE __attribute__((__malloc__)) |
| # define RPMALLOC_CALL |
| #elif defined(_MSC_VER) |
| # define RPMALLOC_ATTRIBUTE |
| # define RPMALLOC_CALL __declspec(restrict) |
| #else |
| # define RPMALLOC_ATTRIBUTE |
| # define RPMALLOC_CALL |
| #endif |
| |
| //! Flag to rpaligned_realloc to not preserve content in reallocation |
| #define RPMALLOC_NO_PRESERVE 1 |
| |
| typedef struct rpmalloc_global_statistics_t { |
| //! Current amount of virtual memory mapped (only if ENABLE_STATISTICS=1) |
| size_t mapped; |
| //! Current amount of memory in global caches for small and medium sizes (<64KiB) |
| size_t cached; |
| //! Curren amount of memory in global caches for large sizes (>=64KiB) |
| size_t cached_large; |
| //! Total amount of memory mapped (only if ENABLE_STATISTICS=1) |
| size_t mapped_total; |
| //! Total amount of memory unmapped (only if ENABLE_STATISTICS=1) |
| size_t unmapped_total; |
| } rpmalloc_global_statistics_t; |
| |
| typedef struct rpmalloc_thread_statistics_t { |
| //! Amount of memory currently requested in allocations (only if ENABLE_STATISTICS=1) |
| size_t requested; |
| //! Amount of memory actually allocated in memory blocks (only if ENABLE_STATISTICS=1) |
| size_t allocated; |
| //! Current number of bytes available for allocation from active spans |
| size_t active; |
| //! Current number of bytes available in thread size class caches |
| size_t sizecache; |
| //! Current number of bytes available in thread span caches |
| size_t spancache; |
| //! Current number of bytes in pending deferred deallocations |
| size_t deferred; |
| //! Total number of bytes transitioned from thread cache to global cache |
| size_t thread_to_global; |
| //! Total number of bytes transitioned from global cache to thread cache |
| size_t global_to_thread; |
| } rpmalloc_thread_statistics_t; |
| |
| extern int |
| rpmalloc_initialize(void); |
| |
| extern void |
| rpmalloc_finalize(void); |
| |
| extern void |
| rpmalloc_thread_initialize(void); |
| |
| extern void |
| rpmalloc_thread_finalize(void); |
| |
| extern void |
| rpmalloc_thread_collect(void); |
| |
| extern int |
| rpmalloc_is_thread_initialized(void); |
| |
| extern void |
| rpmalloc_thread_statistics(rpmalloc_thread_statistics_t* stats); |
| |
| extern void |
| rpmalloc_global_statistics(rpmalloc_global_statistics_t* stats); |
| |
| extern RPMALLOC_CALL void* |
| rpmalloc(size_t size) RPMALLOC_ATTRIBUTE; |
| |
| extern void |
| rpfree(void* ptr); |
| |
| extern RPMALLOC_CALL void* |
| rpcalloc(size_t num, size_t size) RPMALLOC_ATTRIBUTE; |
| |
| extern void* |
| rprealloc(void* ptr, size_t size); |
| |
| extern void* |
| rpaligned_realloc(void* ptr, size_t alignment, size_t size, size_t oldsize, unsigned int flags); |
| |
| extern RPMALLOC_CALL void* |
| rpaligned_alloc(size_t alignment, size_t size) RPMALLOC_ATTRIBUTE; |
| |
| extern RPMALLOC_CALL void* |
| rpmemalign(size_t alignment, size_t size) RPMALLOC_ATTRIBUTE; |
| |
| extern int |
| rpposix_memalign(void **memptr, size_t alignment, size_t size); |
| |
| extern size_t |
| rpmalloc_usable_size(void* ptr); |
| |
| #ifdef __cplusplus |
| } |
| #endif |