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![Ramsay Jones](/assets/img/avatar_default.png)
Sparse issues many "Using plain integer as NULL pointer" warnings while checking nedmalloc.c (at least 98 such warnings before giving up due to "too many warnings"). In addition, sparse issues some "non-ANSI function declaration" type warnings for the symbols 'win32_getcurrentthreadid', 'malloc_stats' and 'malloc_footprint'. In order to suppress the NULL pointer warnings, rather than replace all uses of '0' as a null pointer representation with NULL, we add -Wno-non-pointer-null to SPARSE_FLAGS while checking nedmalloc.c. In order to suppress the "non-ANSI function declaration" warnings, we simply include the missing 'empty parameter list' prototype (void) in the function declarations. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
970 lines
25 KiB
C
970 lines
25 KiB
C
/* Alternative malloc implementation for multiple threads without
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lock contention based on dlmalloc. (C) 2005-2006 Niall Douglas
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Boost Software License - Version 1.0 - August 17th, 2003
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Permission is hereby granted, free of charge, to any person or organization
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obtaining a copy of the software and accompanying documentation covered by
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this license (the "Software") to use, reproduce, display, distribute,
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execute, and transmit the Software, and to prepare derivative works of the
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Software, and to permit third-parties to whom the Software is furnished to
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do so, all subject to the following:
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The copyright notices in the Software and this entire statement, including
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the above license grant, this restriction and the following disclaimer,
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must be included in all copies of the Software, in whole or in part, and
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all derivative works of the Software, unless such copies or derivative
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works are solely in the form of machine-executable object code generated by
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a source language processor.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#ifdef _MSC_VER
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/* Enable full aliasing on MSVC */
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/*#pragma optimize("a", on)*/
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#endif
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/*#define FULLSANITYCHECKS*/
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#include "nedmalloc.h"
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#if defined(WIN32)
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#include <malloc.h>
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#endif
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#define MSPACES 1
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#define ONLY_MSPACES 1
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#ifndef USE_LOCKS
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#define USE_LOCKS 1
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#endif
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#define FOOTERS 1 /* Need to enable footers so frees lock the right mspace */
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#undef DEBUG /* dlmalloc wants DEBUG either 0 or 1 */
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#ifdef _DEBUG
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#define DEBUG 1
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#else
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#define DEBUG 0
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#endif
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#ifdef NDEBUG /* Disable assert checking on release builds */
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#undef DEBUG
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#endif
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/* The default of 64Kb means we spend too much time kernel-side */
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#ifndef DEFAULT_GRANULARITY
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#define DEFAULT_GRANULARITY (1*1024*1024)
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#endif
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/*#define USE_SPIN_LOCKS 0*/
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/*#define FORCEINLINE*/
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#include "malloc.c.h"
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#ifdef NDEBUG /* Disable assert checking on release builds */
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#undef DEBUG
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#endif
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/* The maximum concurrent threads in a pool possible */
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#ifndef MAXTHREADSINPOOL
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#define MAXTHREADSINPOOL 16
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#endif
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/* The maximum number of threadcaches which can be allocated */
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#ifndef THREADCACHEMAXCACHES
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#define THREADCACHEMAXCACHES 256
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#endif
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/* The maximum size to be allocated from the thread cache */
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#ifndef THREADCACHEMAX
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#define THREADCACHEMAX 8192
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#endif
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#if 0
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/* The number of cache entries for finer grained bins. This is (topbitpos(THREADCACHEMAX)-4)*2 */
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#define THREADCACHEMAXBINS ((13-4)*2)
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#else
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/* The number of cache entries. This is (topbitpos(THREADCACHEMAX)-4) */
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#define THREADCACHEMAXBINS (13-4)
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#endif
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/* Point at which the free space in a thread cache is garbage collected */
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#ifndef THREADCACHEMAXFREESPACE
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#define THREADCACHEMAXFREESPACE (512*1024)
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#endif
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#ifdef WIN32
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#define TLSVAR DWORD
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#define TLSALLOC(k) (*(k)=TlsAlloc(), TLS_OUT_OF_INDEXES==*(k))
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#define TLSFREE(k) (!TlsFree(k))
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#define TLSGET(k) TlsGetValue(k)
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#define TLSSET(k, a) (!TlsSetValue(k, a))
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#ifdef DEBUG
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static LPVOID ChkedTlsGetValue(DWORD idx)
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{
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LPVOID ret=TlsGetValue(idx);
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assert(S_OK==GetLastError());
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return ret;
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}
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#undef TLSGET
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#define TLSGET(k) ChkedTlsGetValue(k)
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#endif
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#else
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#define TLSVAR pthread_key_t
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#define TLSALLOC(k) pthread_key_create(k, 0)
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#define TLSFREE(k) pthread_key_delete(k)
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#define TLSGET(k) pthread_getspecific(k)
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#define TLSSET(k, a) pthread_setspecific(k, a)
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#endif
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#if 0
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/* Only enable if testing with valgrind. Causes misoperation */
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#define mspace_malloc(p, s) malloc(s)
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#define mspace_realloc(p, m, s) realloc(m, s)
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#define mspace_calloc(p, n, s) calloc(n, s)
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#define mspace_free(p, m) free(m)
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#endif
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#if defined(__cplusplus)
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#if !defined(NO_NED_NAMESPACE)
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namespace nedalloc {
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#else
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extern "C" {
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#endif
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#endif
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size_t nedblksize(void *mem) THROWSPEC
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{
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#if 0
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/* Only enable if testing with valgrind. Causes misoperation */
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return THREADCACHEMAX;
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#else
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if(mem)
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{
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mchunkptr p=mem2chunk(mem);
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assert(cinuse(p)); /* If this fails, someone tried to free a block twice */
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if(cinuse(p))
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return chunksize(p)-overhead_for(p);
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}
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return 0;
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#endif
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}
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void nedsetvalue(void *v) THROWSPEC { nedpsetvalue(0, v); }
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void * nedmalloc(size_t size) THROWSPEC { return nedpmalloc(0, size); }
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void * nedcalloc(size_t no, size_t size) THROWSPEC { return nedpcalloc(0, no, size); }
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void * nedrealloc(void *mem, size_t size) THROWSPEC { return nedprealloc(0, mem, size); }
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void nedfree(void *mem) THROWSPEC { nedpfree(0, mem); }
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void * nedmemalign(size_t alignment, size_t bytes) THROWSPEC { return nedpmemalign(0, alignment, bytes); }
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#if !NO_MALLINFO
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struct mallinfo nedmallinfo(void) THROWSPEC { return nedpmallinfo(0); }
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#endif
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int nedmallopt(int parno, int value) THROWSPEC { return nedpmallopt(0, parno, value); }
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int nedmalloc_trim(size_t pad) THROWSPEC { return nedpmalloc_trim(0, pad); }
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void nedmalloc_stats(void) THROWSPEC { nedpmalloc_stats(0); }
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size_t nedmalloc_footprint(void) THROWSPEC { return nedpmalloc_footprint(0); }
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void **nedindependent_calloc(size_t elemsno, size_t elemsize, void **chunks) THROWSPEC { return nedpindependent_calloc(0, elemsno, elemsize, chunks); }
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void **nedindependent_comalloc(size_t elems, size_t *sizes, void **chunks) THROWSPEC { return nedpindependent_comalloc(0, elems, sizes, chunks); }
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struct threadcacheblk_t;
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typedef struct threadcacheblk_t threadcacheblk;
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struct threadcacheblk_t
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{ /* Keep less than 16 bytes on 32 bit systems and 32 bytes on 64 bit systems */
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#ifdef FULLSANITYCHECKS
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unsigned int magic;
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#endif
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unsigned int lastUsed, size;
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threadcacheblk *next, *prev;
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};
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typedef struct threadcache_t
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{
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#ifdef FULLSANITYCHECKS
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unsigned int magic1;
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#endif
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int mymspace; /* Last mspace entry this thread used */
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long threadid;
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unsigned int mallocs, frees, successes;
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size_t freeInCache; /* How much free space is stored in this cache */
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threadcacheblk *bins[(THREADCACHEMAXBINS+1)*2];
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#ifdef FULLSANITYCHECKS
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unsigned int magic2;
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#endif
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} threadcache;
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struct nedpool_t
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{
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MLOCK_T mutex;
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void *uservalue;
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int threads; /* Max entries in m to use */
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threadcache *caches[THREADCACHEMAXCACHES];
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TLSVAR mycache; /* Thread cache for this thread. 0 for unset, negative for use mspace-1 directly, otherwise is cache-1 */
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mstate m[MAXTHREADSINPOOL+1]; /* mspace entries for this pool */
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};
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static nedpool syspool;
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static FORCEINLINE unsigned int size2binidx(size_t _size) THROWSPEC
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{ /* 8=1000 16=10000 20=10100 24=11000 32=100000 48=110000 4096=1000000000000 */
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unsigned int topbit, size=(unsigned int)(_size>>4);
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/* 16=1 20=1 24=1 32=10 48=11 64=100 96=110 128=1000 4096=100000000 */
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#if defined(__GNUC__)
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topbit = sizeof(size)*__CHAR_BIT__ - 1 - __builtin_clz(size);
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#elif defined(_MSC_VER) && _MSC_VER>=1300
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{
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unsigned long bsrTopBit;
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_BitScanReverse(&bsrTopBit, size);
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topbit = bsrTopBit;
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}
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#else
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#if 0
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union {
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unsigned asInt[2];
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double asDouble;
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};
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int n;
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asDouble = (double)size + 0.5;
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topbit = (asInt[!FOX_BIGENDIAN] >> 20) - 1023;
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#else
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{
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unsigned int x=size;
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x = x | (x >> 1);
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x = x | (x >> 2);
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x = x | (x >> 4);
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x = x | (x >> 8);
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x = x | (x >>16);
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x = ~x;
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x = x - ((x >> 1) & 0x55555555);
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x = (x & 0x33333333) + ((x >> 2) & 0x33333333);
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x = (x + (x >> 4)) & 0x0F0F0F0F;
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x = x + (x << 8);
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x = x + (x << 16);
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topbit=31 - (x >> 24);
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}
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#endif
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#endif
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return topbit;
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}
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#ifdef FULLSANITYCHECKS
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static void tcsanitycheck(threadcacheblk **ptr) THROWSPEC
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{
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assert((ptr[0] && ptr[1]) || (!ptr[0] && !ptr[1]));
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if(ptr[0] && ptr[1])
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{
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assert(nedblksize(ptr[0])>=sizeof(threadcacheblk));
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assert(nedblksize(ptr[1])>=sizeof(threadcacheblk));
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assert(*(unsigned int *) "NEDN"==ptr[0]->magic);
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assert(*(unsigned int *) "NEDN"==ptr[1]->magic);
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assert(!ptr[0]->prev);
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assert(!ptr[1]->next);
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if(ptr[0]==ptr[1])
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{
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assert(!ptr[0]->next);
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assert(!ptr[1]->prev);
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}
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}
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}
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static void tcfullsanitycheck(threadcache *tc) THROWSPEC
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{
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threadcacheblk **tcbptr=tc->bins;
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int n;
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for(n=0; n<=THREADCACHEMAXBINS; n++, tcbptr+=2)
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{
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threadcacheblk *b, *ob=0;
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tcsanitycheck(tcbptr);
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for(b=tcbptr[0]; b; ob=b, b=b->next)
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{
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assert(*(unsigned int *) "NEDN"==b->magic);
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assert(!ob || ob->next==b);
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assert(!ob || b->prev==ob);
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}
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}
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}
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#endif
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static NOINLINE void RemoveCacheEntries(nedpool *p, threadcache *tc, unsigned int age) THROWSPEC
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{
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#ifdef FULLSANITYCHECKS
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tcfullsanitycheck(tc);
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#endif
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if(tc->freeInCache)
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{
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threadcacheblk **tcbptr=tc->bins;
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int n;
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for(n=0; n<=THREADCACHEMAXBINS; n++, tcbptr+=2)
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{
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threadcacheblk **tcb=tcbptr+1; /* come from oldest end of list */
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/*tcsanitycheck(tcbptr);*/
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for(; *tcb && tc->frees-(*tcb)->lastUsed>=age; )
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{
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threadcacheblk *f=*tcb;
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size_t blksize=f->size; /*nedblksize(f);*/
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assert(blksize<=nedblksize(f));
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assert(blksize);
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#ifdef FULLSANITYCHECKS
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assert(*(unsigned int *) "NEDN"==(*tcb)->magic);
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#endif
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*tcb=(*tcb)->prev;
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if(*tcb)
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(*tcb)->next=0;
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else
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*tcbptr=0;
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tc->freeInCache-=blksize;
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assert((long) tc->freeInCache>=0);
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mspace_free(0, f);
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/*tcsanitycheck(tcbptr);*/
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}
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}
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}
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#ifdef FULLSANITYCHECKS
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tcfullsanitycheck(tc);
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#endif
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}
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static void DestroyCaches(nedpool *p) THROWSPEC
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{
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if(p->caches)
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{
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threadcache *tc;
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int n;
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for(n=0; n<THREADCACHEMAXCACHES; n++)
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{
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if((tc=p->caches[n]))
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{
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tc->frees++;
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RemoveCacheEntries(p, tc, 0);
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assert(!tc->freeInCache);
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tc->mymspace=-1;
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tc->threadid=0;
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mspace_free(0, tc);
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p->caches[n]=0;
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}
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}
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}
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}
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static NOINLINE threadcache *AllocCache(nedpool *p) THROWSPEC
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{
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threadcache *tc=0;
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int n, end;
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ACQUIRE_LOCK(&p->mutex);
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for(n=0; n<THREADCACHEMAXCACHES && p->caches[n]; n++);
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if(THREADCACHEMAXCACHES==n)
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{ /* List exhausted, so disable for this thread */
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RELEASE_LOCK(&p->mutex);
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return 0;
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}
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tc=p->caches[n]=(threadcache *) mspace_calloc(p->m[0], 1, sizeof(threadcache));
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if(!tc)
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{
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RELEASE_LOCK(&p->mutex);
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return 0;
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}
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#ifdef FULLSANITYCHECKS
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tc->magic1=*(unsigned int *)"NEDMALC1";
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tc->magic2=*(unsigned int *)"NEDMALC2";
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#endif
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tc->threadid=(long)(size_t)CURRENT_THREAD;
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for(end=0; p->m[end]; end++);
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tc->mymspace=tc->threadid % end;
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RELEASE_LOCK(&p->mutex);
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if(TLSSET(p->mycache, (void *)(size_t)(n+1))) abort();
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return tc;
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}
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static void *threadcache_malloc(nedpool *p, threadcache *tc, size_t *size) THROWSPEC
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{
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void *ret=0;
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unsigned int bestsize;
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unsigned int idx=size2binidx(*size);
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size_t blksize=0;
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threadcacheblk *blk, **binsptr;
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#ifdef FULLSANITYCHECKS
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tcfullsanitycheck(tc);
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#endif
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/* Calculate best fit bin size */
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bestsize=1<<(idx+4);
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#if 0
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/* Finer grained bin fit */
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idx<<=1;
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if(*size>bestsize)
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{
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idx++;
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bestsize+=bestsize>>1;
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}
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if(*size>bestsize)
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{
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idx++;
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bestsize=1<<(4+(idx>>1));
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}
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#else
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if(*size>bestsize)
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{
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idx++;
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bestsize<<=1;
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}
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#endif
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assert(bestsize>=*size);
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if(*size<bestsize) *size=bestsize;
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assert(*size<=THREADCACHEMAX);
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assert(idx<=THREADCACHEMAXBINS);
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binsptr=&tc->bins[idx*2];
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/* Try to match close, but move up a bin if necessary */
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blk=*binsptr;
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if(!blk || blk->size<*size)
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{ /* Bump it up a bin */
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if(idx<THREADCACHEMAXBINS)
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{
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idx++;
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binsptr+=2;
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blk=*binsptr;
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}
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}
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if(blk)
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{
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blksize=blk->size; /*nedblksize(blk);*/
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assert(nedblksize(blk)>=blksize);
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assert(blksize>=*size);
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if(blk->next)
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blk->next->prev=0;
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*binsptr=blk->next;
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if(!*binsptr)
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binsptr[1]=0;
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#ifdef FULLSANITYCHECKS
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blk->magic=0;
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#endif
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assert(binsptr[0]!=blk && binsptr[1]!=blk);
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assert(nedblksize(blk)>=sizeof(threadcacheblk) && nedblksize(blk)<=THREADCACHEMAX+CHUNK_OVERHEAD);
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/*printf("malloc: %p, %p, %p, %lu\n", p, tc, blk, (long) size);*/
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ret=(void *) blk;
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}
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++tc->mallocs;
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if(ret)
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{
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assert(blksize>=*size);
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++tc->successes;
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tc->freeInCache-=blksize;
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assert((long) tc->freeInCache>=0);
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}
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#if defined(DEBUG) && 0
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if(!(tc->mallocs & 0xfff))
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{
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printf("*** threadcache=%u, mallocs=%u (%f), free=%u (%f), freeInCache=%u\n", (unsigned int) tc->threadid, tc->mallocs,
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(float) tc->successes/tc->mallocs, tc->frees, (float) tc->successes/tc->frees, (unsigned int) tc->freeInCache);
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}
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#endif
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#ifdef FULLSANITYCHECKS
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tcfullsanitycheck(tc);
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#endif
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return ret;
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}
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static NOINLINE void ReleaseFreeInCache(nedpool *p, threadcache *tc, int mymspace) THROWSPEC
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{
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unsigned int age=THREADCACHEMAXFREESPACE/8192;
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/*ACQUIRE_LOCK(&p->m[mymspace]->mutex);*/
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while(age && tc->freeInCache>=THREADCACHEMAXFREESPACE)
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{
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RemoveCacheEntries(p, tc, age);
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/*printf("*** Removing cache entries older than %u (%u)\n", age, (unsigned int) tc->freeInCache);*/
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age>>=1;
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}
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/*RELEASE_LOCK(&p->m[mymspace]->mutex);*/
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}
|
|
static void threadcache_free(nedpool *p, threadcache *tc, int mymspace, void *mem, size_t size) THROWSPEC
|
|
{
|
|
unsigned int bestsize;
|
|
unsigned int idx=size2binidx(size);
|
|
threadcacheblk **binsptr, *tck=(threadcacheblk *) mem;
|
|
assert(size>=sizeof(threadcacheblk) && size<=THREADCACHEMAX+CHUNK_OVERHEAD);
|
|
#ifdef DEBUG
|
|
{ /* Make sure this is a valid memory block */
|
|
mchunkptr p = mem2chunk(mem);
|
|
mstate fm = get_mstate_for(p);
|
|
if (!ok_magic(fm)) {
|
|
USAGE_ERROR_ACTION(fm, p);
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef FULLSANITYCHECKS
|
|
tcfullsanitycheck(tc);
|
|
#endif
|
|
/* Calculate best fit bin size */
|
|
bestsize=1<<(idx+4);
|
|
#if 0
|
|
/* Finer grained bin fit */
|
|
idx<<=1;
|
|
if(size>bestsize)
|
|
{
|
|
unsigned int biggerbestsize=bestsize+bestsize<<1;
|
|
if(size>=biggerbestsize)
|
|
{
|
|
idx++;
|
|
bestsize=biggerbestsize;
|
|
}
|
|
}
|
|
#endif
|
|
if(bestsize!=size) /* dlmalloc can round up, so we round down to preserve indexing */
|
|
size=bestsize;
|
|
binsptr=&tc->bins[idx*2];
|
|
assert(idx<=THREADCACHEMAXBINS);
|
|
if(tck==*binsptr)
|
|
{
|
|
fprintf(stderr, "Attempt to free already freed memory block %p - aborting!\n", tck);
|
|
abort();
|
|
}
|
|
#ifdef FULLSANITYCHECKS
|
|
tck->magic=*(unsigned int *) "NEDN";
|
|
#endif
|
|
tck->lastUsed=++tc->frees;
|
|
tck->size=(unsigned int) size;
|
|
tck->next=*binsptr;
|
|
tck->prev=0;
|
|
if(tck->next)
|
|
tck->next->prev=tck;
|
|
else
|
|
binsptr[1]=tck;
|
|
assert(!*binsptr || (*binsptr)->size==tck->size);
|
|
*binsptr=tck;
|
|
assert(tck==tc->bins[idx*2]);
|
|
assert(tc->bins[idx*2+1]==tck || binsptr[0]->next->prev==tck);
|
|
/*printf("free: %p, %p, %p, %lu\n", p, tc, mem, (long) size);*/
|
|
tc->freeInCache+=size;
|
|
#ifdef FULLSANITYCHECKS
|
|
tcfullsanitycheck(tc);
|
|
#endif
|
|
#if 1
|
|
if(tc->freeInCache>=THREADCACHEMAXFREESPACE)
|
|
ReleaseFreeInCache(p, tc, mymspace);
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
|
|
static NOINLINE int InitPool(nedpool *p, size_t capacity, int threads) THROWSPEC
|
|
{ /* threads is -1 for system pool */
|
|
ensure_initialization();
|
|
ACQUIRE_MALLOC_GLOBAL_LOCK();
|
|
if(p->threads) goto done;
|
|
if(INITIAL_LOCK(&p->mutex)) goto err;
|
|
if(TLSALLOC(&p->mycache)) goto err;
|
|
if(!(p->m[0]=(mstate) create_mspace(capacity, 1))) goto err;
|
|
p->m[0]->extp=p;
|
|
p->threads=(threads<1 || threads>MAXTHREADSINPOOL) ? MAXTHREADSINPOOL : threads;
|
|
done:
|
|
RELEASE_MALLOC_GLOBAL_LOCK();
|
|
return 1;
|
|
err:
|
|
if(threads<0)
|
|
abort(); /* If you can't allocate for system pool, we're screwed */
|
|
DestroyCaches(p);
|
|
if(p->m[0])
|
|
{
|
|
destroy_mspace(p->m[0]);
|
|
p->m[0]=0;
|
|
}
|
|
if(p->mycache)
|
|
{
|
|
if(TLSFREE(p->mycache)) abort();
|
|
p->mycache=0;
|
|
}
|
|
RELEASE_MALLOC_GLOBAL_LOCK();
|
|
return 0;
|
|
}
|
|
static NOINLINE mstate FindMSpace(nedpool *p, threadcache *tc, int *lastUsed, size_t size) THROWSPEC
|
|
{ /* Gets called when thread's last used mspace is in use. The strategy
|
|
is to run through the list of all available mspaces looking for an
|
|
unlocked one and if we fail, we create a new one so long as we don't
|
|
exceed p->threads */
|
|
int n, end;
|
|
for(n=end=*lastUsed+1; p->m[n]; end=++n)
|
|
{
|
|
if(TRY_LOCK(&p->m[n]->mutex)) goto found;
|
|
}
|
|
for(n=0; n<*lastUsed && p->m[n]; n++)
|
|
{
|
|
if(TRY_LOCK(&p->m[n]->mutex)) goto found;
|
|
}
|
|
if(end<p->threads)
|
|
{
|
|
mstate temp;
|
|
if(!(temp=(mstate) create_mspace(size, 1)))
|
|
goto badexit;
|
|
/* Now we're ready to modify the lists, we lock */
|
|
ACQUIRE_LOCK(&p->mutex);
|
|
while(p->m[end] && end<p->threads)
|
|
end++;
|
|
if(end>=p->threads)
|
|
{ /* Drat, must destroy it now */
|
|
RELEASE_LOCK(&p->mutex);
|
|
destroy_mspace((mspace) temp);
|
|
goto badexit;
|
|
}
|
|
/* We really want to make sure this goes into memory now but we
|
|
have to be careful of breaking aliasing rules, so write it twice */
|
|
{
|
|
volatile struct malloc_state **_m=(volatile struct malloc_state **) &p->m[end];
|
|
*_m=(p->m[end]=temp);
|
|
}
|
|
ACQUIRE_LOCK(&p->m[end]->mutex);
|
|
/*printf("Created mspace idx %d\n", end);*/
|
|
RELEASE_LOCK(&p->mutex);
|
|
n=end;
|
|
goto found;
|
|
}
|
|
/* Let it lock on the last one it used */
|
|
badexit:
|
|
ACQUIRE_LOCK(&p->m[*lastUsed]->mutex);
|
|
return p->m[*lastUsed];
|
|
found:
|
|
*lastUsed=n;
|
|
if(tc)
|
|
tc->mymspace=n;
|
|
else
|
|
{
|
|
if(TLSSET(p->mycache, (void *)(size_t)(-(n+1)))) abort();
|
|
}
|
|
return p->m[n];
|
|
}
|
|
|
|
nedpool *nedcreatepool(size_t capacity, int threads) THROWSPEC
|
|
{
|
|
nedpool *ret;
|
|
if(!(ret=(nedpool *) nedpcalloc(0, 1, sizeof(nedpool)))) return 0;
|
|
if(!InitPool(ret, capacity, threads))
|
|
{
|
|
nedpfree(0, ret);
|
|
return 0;
|
|
}
|
|
return ret;
|
|
}
|
|
void neddestroypool(nedpool *p) THROWSPEC
|
|
{
|
|
int n;
|
|
ACQUIRE_LOCK(&p->mutex);
|
|
DestroyCaches(p);
|
|
for(n=0; p->m[n]; n++)
|
|
{
|
|
destroy_mspace(p->m[n]);
|
|
p->m[n]=0;
|
|
}
|
|
RELEASE_LOCK(&p->mutex);
|
|
if(TLSFREE(p->mycache)) abort();
|
|
nedpfree(0, p);
|
|
}
|
|
|
|
void nedpsetvalue(nedpool *p, void *v) THROWSPEC
|
|
{
|
|
if(!p) { p=&syspool; if(!syspool.threads) InitPool(&syspool, 0, -1); }
|
|
p->uservalue=v;
|
|
}
|
|
void *nedgetvalue(nedpool **p, void *mem) THROWSPEC
|
|
{
|
|
nedpool *np=0;
|
|
mchunkptr mcp=mem2chunk(mem);
|
|
mstate fm;
|
|
if(!(is_aligned(chunk2mem(mcp))) && mcp->head != FENCEPOST_HEAD) return 0;
|
|
if(!cinuse(mcp)) return 0;
|
|
if(!next_pinuse(mcp)) return 0;
|
|
if(!is_mmapped(mcp) && !pinuse(mcp))
|
|
{
|
|
if(next_chunk(prev_chunk(mcp))!=mcp) return 0;
|
|
}
|
|
fm=get_mstate_for(mcp);
|
|
if(!ok_magic(fm)) return 0;
|
|
if(!ok_address(fm, mcp)) return 0;
|
|
if(!fm->extp) return 0;
|
|
np=(nedpool *) fm->extp;
|
|
if(p) *p=np;
|
|
return np->uservalue;
|
|
}
|
|
|
|
void neddisablethreadcache(nedpool *p) THROWSPEC
|
|
{
|
|
int mycache;
|
|
if(!p)
|
|
{
|
|
p=&syspool;
|
|
if(!syspool.threads) InitPool(&syspool, 0, -1);
|
|
}
|
|
mycache=(int)(size_t) TLSGET(p->mycache);
|
|
if(!mycache)
|
|
{ /* Set to mspace 0 */
|
|
if(TLSSET(p->mycache, (void *)-1)) abort();
|
|
}
|
|
else if(mycache>0)
|
|
{ /* Set to last used mspace */
|
|
threadcache *tc=p->caches[mycache-1];
|
|
#if defined(DEBUG)
|
|
printf("Threadcache utilisation: %lf%% in cache with %lf%% lost to other threads\n",
|
|
100.0*tc->successes/tc->mallocs, 100.0*((double) tc->mallocs-tc->frees)/tc->mallocs);
|
|
#endif
|
|
if(TLSSET(p->mycache, (void *)(size_t)(-tc->mymspace))) abort();
|
|
tc->frees++;
|
|
RemoveCacheEntries(p, tc, 0);
|
|
assert(!tc->freeInCache);
|
|
tc->mymspace=-1;
|
|
tc->threadid=0;
|
|
mspace_free(0, p->caches[mycache-1]);
|
|
p->caches[mycache-1]=0;
|
|
}
|
|
}
|
|
|
|
#define GETMSPACE(m,p,tc,ms,s,action) \
|
|
do \
|
|
{ \
|
|
mstate m = GetMSpace((p),(tc),(ms),(s)); \
|
|
action; \
|
|
RELEASE_LOCK(&m->mutex); \
|
|
} while (0)
|
|
|
|
static FORCEINLINE mstate GetMSpace(nedpool *p, threadcache *tc, int mymspace, size_t size) THROWSPEC
|
|
{ /* Returns a locked and ready for use mspace */
|
|
mstate m=p->m[mymspace];
|
|
assert(m);
|
|
if(!TRY_LOCK(&p->m[mymspace]->mutex)) m=FindMSpace(p, tc, &mymspace, size);\
|
|
/*assert(IS_LOCKED(&p->m[mymspace]->mutex));*/
|
|
return m;
|
|
}
|
|
static FORCEINLINE void GetThreadCache(nedpool **p, threadcache **tc, int *mymspace, size_t *size) THROWSPEC
|
|
{
|
|
int mycache;
|
|
if(size && *size<sizeof(threadcacheblk)) *size=sizeof(threadcacheblk);
|
|
if(!*p)
|
|
{
|
|
*p=&syspool;
|
|
if(!syspool.threads) InitPool(&syspool, 0, -1);
|
|
}
|
|
mycache=(int)(size_t) TLSGET((*p)->mycache);
|
|
if(mycache>0)
|
|
{
|
|
*tc=(*p)->caches[mycache-1];
|
|
*mymspace=(*tc)->mymspace;
|
|
}
|
|
else if(!mycache)
|
|
{
|
|
*tc=AllocCache(*p);
|
|
if(!*tc)
|
|
{ /* Disable */
|
|
if(TLSSET((*p)->mycache, (void *)-1)) abort();
|
|
*mymspace=0;
|
|
}
|
|
else
|
|
*mymspace=(*tc)->mymspace;
|
|
}
|
|
else
|
|
{
|
|
*tc=0;
|
|
*mymspace=-mycache-1;
|
|
}
|
|
assert(*mymspace>=0);
|
|
assert((long)(size_t)CURRENT_THREAD==(*tc)->threadid);
|
|
#ifdef FULLSANITYCHECKS
|
|
if(*tc)
|
|
{
|
|
if(*(unsigned int *)"NEDMALC1"!=(*tc)->magic1 || *(unsigned int *)"NEDMALC2"!=(*tc)->magic2)
|
|
{
|
|
abort();
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void * nedpmalloc(nedpool *p, size_t size) THROWSPEC
|
|
{
|
|
void *ret=0;
|
|
threadcache *tc;
|
|
int mymspace;
|
|
GetThreadCache(&p, &tc, &mymspace, &size);
|
|
#if THREADCACHEMAX
|
|
if(tc && size<=THREADCACHEMAX)
|
|
{ /* Use the thread cache */
|
|
ret=threadcache_malloc(p, tc, &size);
|
|
}
|
|
#endif
|
|
if(!ret)
|
|
{ /* Use this thread's mspace */
|
|
GETMSPACE(m, p, tc, mymspace, size,
|
|
ret=mspace_malloc(m, size));
|
|
}
|
|
return ret;
|
|
}
|
|
void * nedpcalloc(nedpool *p, size_t no, size_t size) THROWSPEC
|
|
{
|
|
size_t rsize=size*no;
|
|
void *ret=0;
|
|
threadcache *tc;
|
|
int mymspace;
|
|
GetThreadCache(&p, &tc, &mymspace, &rsize);
|
|
#if THREADCACHEMAX
|
|
if(tc && rsize<=THREADCACHEMAX)
|
|
{ /* Use the thread cache */
|
|
if((ret=threadcache_malloc(p, tc, &rsize)))
|
|
memset(ret, 0, rsize);
|
|
}
|
|
#endif
|
|
if(!ret)
|
|
{ /* Use this thread's mspace */
|
|
GETMSPACE(m, p, tc, mymspace, rsize,
|
|
ret=mspace_calloc(m, 1, rsize));
|
|
}
|
|
return ret;
|
|
}
|
|
void * nedprealloc(nedpool *p, void *mem, size_t size) THROWSPEC
|
|
{
|
|
void *ret=0;
|
|
threadcache *tc;
|
|
int mymspace;
|
|
if(!mem) return nedpmalloc(p, size);
|
|
GetThreadCache(&p, &tc, &mymspace, &size);
|
|
#if THREADCACHEMAX
|
|
if(tc && size && size<=THREADCACHEMAX)
|
|
{ /* Use the thread cache */
|
|
size_t memsize=nedblksize(mem);
|
|
assert(memsize);
|
|
if((ret=threadcache_malloc(p, tc, &size)))
|
|
{
|
|
memcpy(ret, mem, memsize<size ? memsize : size);
|
|
if(memsize<=THREADCACHEMAX)
|
|
threadcache_free(p, tc, mymspace, mem, memsize);
|
|
else
|
|
mspace_free(0, mem);
|
|
}
|
|
}
|
|
#endif
|
|
if(!ret)
|
|
{ /* Reallocs always happen in the mspace they happened in, so skip
|
|
locking the preferred mspace for this thread */
|
|
ret=mspace_realloc(0, mem, size);
|
|
}
|
|
return ret;
|
|
}
|
|
void nedpfree(nedpool *p, void *mem) THROWSPEC
|
|
{ /* Frees always happen in the mspace they happened in, so skip
|
|
locking the preferred mspace for this thread */
|
|
threadcache *tc;
|
|
int mymspace;
|
|
size_t memsize;
|
|
assert(mem);
|
|
GetThreadCache(&p, &tc, &mymspace, 0);
|
|
#if THREADCACHEMAX
|
|
memsize=nedblksize(mem);
|
|
assert(memsize);
|
|
if(mem && tc && memsize<=(THREADCACHEMAX+CHUNK_OVERHEAD))
|
|
threadcache_free(p, tc, mymspace, mem, memsize);
|
|
else
|
|
#endif
|
|
mspace_free(0, mem);
|
|
}
|
|
void * nedpmemalign(nedpool *p, size_t alignment, size_t bytes) THROWSPEC
|
|
{
|
|
void *ret;
|
|
threadcache *tc;
|
|
int mymspace;
|
|
GetThreadCache(&p, &tc, &mymspace, &bytes);
|
|
{ /* Use this thread's mspace */
|
|
GETMSPACE(m, p, tc, mymspace, bytes,
|
|
ret=mspace_memalign(m, alignment, bytes));
|
|
}
|
|
return ret;
|
|
}
|
|
#if !NO_MALLINFO
|
|
struct mallinfo nedpmallinfo(nedpool *p) THROWSPEC
|
|
{
|
|
int n;
|
|
struct mallinfo ret={0};
|
|
if(!p) { p=&syspool; if(!syspool.threads) InitPool(&syspool, 0, -1); }
|
|
for(n=0; p->m[n]; n++)
|
|
{
|
|
struct mallinfo t=mspace_mallinfo(p->m[n]);
|
|
ret.arena+=t.arena;
|
|
ret.ordblks+=t.ordblks;
|
|
ret.hblkhd+=t.hblkhd;
|
|
ret.usmblks+=t.usmblks;
|
|
ret.uordblks+=t.uordblks;
|
|
ret.fordblks+=t.fordblks;
|
|
ret.keepcost+=t.keepcost;
|
|
}
|
|
return ret;
|
|
}
|
|
#endif
|
|
int nedpmallopt(nedpool *p, int parno, int value) THROWSPEC
|
|
{
|
|
return mspace_mallopt(parno, value);
|
|
}
|
|
int nedpmalloc_trim(nedpool *p, size_t pad) THROWSPEC
|
|
{
|
|
int n, ret=0;
|
|
if(!p) { p=&syspool; if(!syspool.threads) InitPool(&syspool, 0, -1); }
|
|
for(n=0; p->m[n]; n++)
|
|
{
|
|
ret+=mspace_trim(p->m[n], pad);
|
|
}
|
|
return ret;
|
|
}
|
|
void nedpmalloc_stats(nedpool *p) THROWSPEC
|
|
{
|
|
int n;
|
|
if(!p) { p=&syspool; if(!syspool.threads) InitPool(&syspool, 0, -1); }
|
|
for(n=0; p->m[n]; n++)
|
|
{
|
|
mspace_malloc_stats(p->m[n]);
|
|
}
|
|
}
|
|
size_t nedpmalloc_footprint(nedpool *p) THROWSPEC
|
|
{
|
|
size_t ret=0;
|
|
int n;
|
|
if(!p) { p=&syspool; if(!syspool.threads) InitPool(&syspool, 0, -1); }
|
|
for(n=0; p->m[n]; n++)
|
|
{
|
|
ret+=mspace_footprint(p->m[n]);
|
|
}
|
|
return ret;
|
|
}
|
|
void **nedpindependent_calloc(nedpool *p, size_t elemsno, size_t elemsize, void **chunks) THROWSPEC
|
|
{
|
|
void **ret;
|
|
threadcache *tc;
|
|
int mymspace;
|
|
GetThreadCache(&p, &tc, &mymspace, &elemsize);
|
|
GETMSPACE(m, p, tc, mymspace, elemsno*elemsize,
|
|
ret=mspace_independent_calloc(m, elemsno, elemsize, chunks));
|
|
return ret;
|
|
}
|
|
void **nedpindependent_comalloc(nedpool *p, size_t elems, size_t *sizes, void **chunks) THROWSPEC
|
|
{
|
|
void **ret;
|
|
threadcache *tc;
|
|
int mymspace;
|
|
size_t i, *adjustedsizes=(size_t *) alloca(elems*sizeof(size_t));
|
|
if(!adjustedsizes) return 0;
|
|
for(i=0; i<elems; i++)
|
|
adjustedsizes[i]=sizes[i]<sizeof(threadcacheblk) ? sizeof(threadcacheblk) : sizes[i];
|
|
GetThreadCache(&p, &tc, &mymspace, 0);
|
|
GETMSPACE(m, p, tc, mymspace, 0,
|
|
ret=mspace_independent_comalloc(m, elems, adjustedsizes, chunks));
|
|
return ret;
|
|
}
|
|
|
|
#ifdef OVERRIDE_STRDUP
|
|
/*
|
|
* This implementation is purely there to override the libc version, to
|
|
* avoid a crash due to allocation and free on different 'heaps'.
|
|
*/
|
|
char *strdup(const char *s1)
|
|
{
|
|
char *s2 = 0;
|
|
if (s1) {
|
|
s2 = malloc(strlen(s1) + 1);
|
|
strcpy(s2, s1);
|
|
}
|
|
return s2;
|
|
}
|
|
#endif
|
|
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|