| /* nedalloc, an alternative malloc implementation for multiple threads without |
| lock contention based on dlmalloc v2.8.3. (C) 2005 Niall Douglas |
| |
| Boost Software License - Version 1.0 - August 17th, 2003 |
| |
| Permission is hereby granted, free of charge, to any person or organization |
| obtaining a copy of the software and accompanying documentation covered by |
| this license (the "Software") to use, reproduce, display, distribute, |
| execute, and transmit the Software, and to prepare derivative works of the |
| Software, and to permit third-parties to whom the Software is furnished to |
| do so, all subject to the following: |
| |
| The copyright notices in the Software and this entire statement, including |
| the above license grant, this restriction and the following disclaimer, |
| must be included in all copies of the Software, in whole or in part, and |
| all derivative works of the Software, unless such copies or derivative |
| works are solely in the form of machine-executable object code generated by |
| a source language processor. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
| SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
| FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
| ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| DEALINGS IN THE SOFTWARE. |
| */ |
| |
| #ifndef NEDMALLOC_H |
| #define NEDMALLOC_H |
| |
| |
| /* See malloc.c.h for what each function does. |
| |
| REPLACE_SYSTEM_ALLOCATOR causes nedalloc's functions to be called malloc, |
| free etc. instead of nedmalloc, nedfree etc. You may or may not want this. |
| |
| NO_NED_NAMESPACE prevents the functions from being defined in the nedalloc |
| namespace when in C++ (uses the global namespace instead). |
| |
| EXTSPEC can be defined to be __declspec(dllexport) or |
| __attribute__ ((visibility("default"))) or whatever you like. It defaults |
| to extern. |
| |
| USE_LOCKS can be 2 if you want to define your own MLOCK_T, INITIAL_LOCK, |
| ACQUIRE_LOCK, RELEASE_LOCK, TRY_LOCK, IS_LOCKED and NULL_LOCK_INITIALIZER. |
| |
| */ |
| |
| #include <stddef.h> /* for size_t */ |
| |
| #ifndef EXTSPEC |
| #define EXTSPEC extern |
| #endif |
| |
| #if defined(_MSC_VER) && _MSC_VER>=1400 |
| #define MALLOCATTR __declspec(restrict) |
| #endif |
| #ifdef __GNUC__ |
| #define MALLOCATTR __attribute__ ((malloc)) |
| #endif |
| #ifndef MALLOCATTR |
| #define MALLOCATTR |
| #endif |
| |
| #ifdef REPLACE_SYSTEM_ALLOCATOR |
| #define nedmalloc malloc |
| #define nedcalloc calloc |
| #define nedrealloc realloc |
| #define nedfree free |
| #define nedmemalign memalign |
| #define nedmallinfo mallinfo |
| #define nedmallopt mallopt |
| #define nedmalloc_trim malloc_trim |
| #define nedmalloc_stats malloc_stats |
| #define nedmalloc_footprint malloc_footprint |
| #define nedindependent_calloc independent_calloc |
| #define nedindependent_comalloc independent_comalloc |
| #ifdef _MSC_VER |
| #define nedblksize _msize |
| #endif |
| #endif |
| |
| #ifndef NO_MALLINFO |
| #define NO_MALLINFO 0 |
| #endif |
| |
| #if !NO_MALLINFO |
| struct mallinfo; |
| #endif |
| |
| #if defined(__cplusplus) |
| #if !defined(NO_NED_NAMESPACE) |
| namespace nedalloc { |
| #else |
| extern "C" { |
| #endif |
| #define THROWSPEC throw() |
| #else |
| #define THROWSPEC |
| #endif |
| |
| /* These are the global functions */ |
| |
| /* Gets the usable size of an allocated block. Note this will always be bigger than what was |
| asked for due to rounding etc. |
| */ |
| EXTSPEC size_t nedblksize(void *mem) THROWSPEC; |
| |
| EXTSPEC void nedsetvalue(void *v) THROWSPEC; |
| |
| EXTSPEC MALLOCATTR void * nedmalloc(size_t size) THROWSPEC; |
| EXTSPEC MALLOCATTR void * nedcalloc(size_t no, size_t size) THROWSPEC; |
| EXTSPEC MALLOCATTR void * nedrealloc(void *mem, size_t size) THROWSPEC; |
| EXTSPEC void nedfree(void *mem) THROWSPEC; |
| EXTSPEC MALLOCATTR void * nedmemalign(size_t alignment, size_t bytes) THROWSPEC; |
| #if !NO_MALLINFO |
| EXTSPEC struct mallinfo nedmallinfo(void) THROWSPEC; |
| #endif |
| EXTSPEC int nedmallopt(int parno, int value) THROWSPEC; |
| EXTSPEC int nedmalloc_trim(size_t pad) THROWSPEC; |
| EXTSPEC void nedmalloc_stats(void) THROWSPEC; |
| EXTSPEC size_t nedmalloc_footprint(void) THROWSPEC; |
| EXTSPEC MALLOCATTR void **nedindependent_calloc(size_t elemsno, size_t elemsize, void **chunks) THROWSPEC; |
| EXTSPEC MALLOCATTR void **nedindependent_comalloc(size_t elems, size_t *sizes, void **chunks) THROWSPEC; |
| |
| /* These are the pool functions */ |
| struct nedpool_t; |
| typedef struct nedpool_t nedpool; |
| |
| /* Creates a memory pool for use with the nedp* functions below. |
| Capacity is how much to allocate immediately (if you know you'll be allocating a lot |
| of memory very soon) which you can leave at zero. Threads specifies how many threads |
| will *normally* be accessing the pool concurrently. Setting this to zero means it |
| extends on demand, but be careful of this as it can rapidly consume system resources |
| where bursts of concurrent threads use a pool at once. |
| */ |
| EXTSPEC MALLOCATTR nedpool *nedcreatepool(size_t capacity, int threads) THROWSPEC; |
| |
| /* Destroys a memory pool previously created by nedcreatepool(). |
| */ |
| EXTSPEC void neddestroypool(nedpool *p) THROWSPEC; |
| |
| /* Sets a value to be associated with a pool. You can retrieve this value by passing |
| any memory block allocated from that pool. |
| */ |
| EXTSPEC void nedpsetvalue(nedpool *p, void *v) THROWSPEC; |
| /* Gets a previously set value using nedpsetvalue() or zero if memory is unknown. |
| Optionally can also retrieve pool. |
| */ |
| EXTSPEC void *nedgetvalue(nedpool **p, void *mem) THROWSPEC; |
| |
| /* Disables the thread cache for the calling thread, returning any existing cache |
| data to the central pool. |
| */ |
| EXTSPEC void neddisablethreadcache(nedpool *p) THROWSPEC; |
| |
| EXTSPEC MALLOCATTR void * nedpmalloc(nedpool *p, size_t size) THROWSPEC; |
| EXTSPEC MALLOCATTR void * nedpcalloc(nedpool *p, size_t no, size_t size) THROWSPEC; |
| EXTSPEC MALLOCATTR void * nedprealloc(nedpool *p, void *mem, size_t size) THROWSPEC; |
| EXTSPEC void nedpfree(nedpool *p, void *mem) THROWSPEC; |
| EXTSPEC MALLOCATTR void * nedpmemalign(nedpool *p, size_t alignment, size_t bytes) THROWSPEC; |
| #if !NO_MALLINFO |
| EXTSPEC struct mallinfo nedpmallinfo(nedpool *p) THROWSPEC; |
| #endif |
| EXTSPEC int nedpmallopt(nedpool *p, int parno, int value) THROWSPEC; |
| EXTSPEC int nedpmalloc_trim(nedpool *p, size_t pad) THROWSPEC; |
| EXTSPEC void nedpmalloc_stats(nedpool *p) THROWSPEC; |
| EXTSPEC size_t nedpmalloc_footprint(nedpool *p) THROWSPEC; |
| EXTSPEC MALLOCATTR void **nedpindependent_calloc(nedpool *p, size_t elemsno, size_t elemsize, void **chunks) THROWSPEC; |
| EXTSPEC MALLOCATTR void **nedpindependent_comalloc(nedpool *p, size_t elems, size_t *sizes, void **chunks) THROWSPEC; |
| |
| #if defined(__cplusplus) |
| } |
| #endif |
| |
| #undef MALLOCATTR |
| #undef EXTSPEC |
| |
| #endif |