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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 17:28:19 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 17:28:19 +0000 |
commit | 18657a960e125336f704ea058e25c27bd3900dcb (patch) | |
tree | 17b438b680ed45a996d7b59951e6aa34023783f2 /ext/lsm1/lsm_mem.c | |
parent | Initial commit. (diff) | |
download | sqlite3-18657a960e125336f704ea058e25c27bd3900dcb.tar.xz sqlite3-18657a960e125336f704ea058e25c27bd3900dcb.zip |
Adding upstream version 3.40.1.upstream/3.40.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'ext/lsm1/lsm_mem.c')
-rw-r--r-- | ext/lsm1/lsm_mem.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/ext/lsm1/lsm_mem.c b/ext/lsm1/lsm_mem.c new file mode 100644 index 0000000..13dd9fe --- /dev/null +++ b/ext/lsm1/lsm_mem.c @@ -0,0 +1,104 @@ +/* +** 2011-08-18 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** +** Helper routines for memory allocation. +*/ +#include "lsmInt.h" + +/* +** The following routines are called internally by LSM sub-routines. In +** this case a valid environment pointer must be supplied. +*/ +void *lsmMalloc(lsm_env *pEnv, size_t N){ + assert( pEnv ); + return pEnv->xMalloc(pEnv, N); +} +void lsmFree(lsm_env *pEnv, void *p){ + assert( pEnv ); + pEnv->xFree(pEnv, p); +} +void *lsmRealloc(lsm_env *pEnv, void *p, size_t N){ + assert( pEnv ); + return pEnv->xRealloc(pEnv, p, N); +} + +/* +** Core memory allocation routines for LSM. +*/ +void *lsm_malloc(lsm_env *pEnv, size_t N){ + return lsmMalloc(pEnv ? pEnv : lsm_default_env(), N); +} +void lsm_free(lsm_env *pEnv, void *p){ + lsmFree(pEnv ? pEnv : lsm_default_env(), p); +} +void *lsm_realloc(lsm_env *pEnv, void *p, size_t N){ + return lsmRealloc(pEnv ? pEnv : lsm_default_env(), p, N); +} + +void *lsmMallocZero(lsm_env *pEnv, size_t N){ + void *pRet; + assert( pEnv ); + pRet = lsmMalloc(pEnv, N); + if( pRet ) memset(pRet, 0, N); + return pRet; +} + +void *lsmMallocRc(lsm_env *pEnv, size_t N, int *pRc){ + void *pRet = 0; + if( *pRc==LSM_OK ){ + pRet = lsmMalloc(pEnv, N); + if( pRet==0 ){ + *pRc = LSM_NOMEM_BKPT; + } + } + return pRet; +} + +void *lsmMallocZeroRc(lsm_env *pEnv, size_t N, int *pRc){ + void *pRet = 0; + if( *pRc==LSM_OK ){ + pRet = lsmMallocZero(pEnv, N); + if( pRet==0 ){ + *pRc = LSM_NOMEM_BKPT; + } + } + return pRet; +} + +void *lsmReallocOrFree(lsm_env *pEnv, void *p, size_t N){ + void *pNew; + pNew = lsm_realloc(pEnv, p, N); + if( !pNew ) lsm_free(pEnv, p); + return pNew; +} + +void *lsmReallocOrFreeRc(lsm_env *pEnv, void *p, size_t N, int *pRc){ + void *pRet = 0; + if( *pRc ){ + lsmFree(pEnv, p); + }else{ + pRet = lsmReallocOrFree(pEnv, p, N); + if( !pRet ) *pRc = LSM_NOMEM_BKPT; + } + return pRet; +} + +char *lsmMallocStrdup(lsm_env *pEnv, const char *zIn){ + int nByte; + char *zRet; + nByte = strlen(zIn); + zRet = lsmMalloc(pEnv, nByte+1); + if( zRet ){ + memcpy(zRet, zIn, nByte+1); + } + return zRet; +} |