diff options
Diffstat (limited to 'gnu/packages/patches/sqlite-large-page-size-fix.patch')
| -rw-r--r-- | gnu/packages/patches/sqlite-large-page-size-fix.patch | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/gnu/packages/patches/sqlite-large-page-size-fix.patch b/gnu/packages/patches/sqlite-large-page-size-fix.patch deleted file mode 100644 index c561fa20a2..0000000000 --- a/gnu/packages/patches/sqlite-large-page-size-fix.patch +++ /dev/null @@ -1,180 +0,0 @@ -Add an experimental fix to avoid attempting to mmap memory from an -offset that is not a multiple of the system page size on systems with -page sizes larger than 32KB. - -Patch by Dan Kennedy <danielk1977@gmail.com>. - ---- sqlite-autoconf/sqlite3.c.orig 2014-03-22 23:44:47.055908203 -0400 -+++ sqlite-autoconf/sqlite3.c 2014-03-22 23:44:06.716552734 -0400 -@@ -24010,6 +24010,7 @@ - - /* Forward reference */ - static int openDirectory(const char*, int*); -+static int unixGetpagesize(void); - - /* - ** Many system calls are accessed through pointer-to-functions so that -@@ -24133,6 +24134,9 @@ - #define osMremap ((void*(*)(void*,size_t,size_t,int,...))aSyscall[23].pCurrent) - #endif - -+ { "getpagesize", (sqlite3_syscall_ptr)unixGetpagesize, 0 }, -+#define osGetpagesize ((int(*)(void))aSyscall[24].pCurrent) -+ - }; /* End of the overrideable system calls */ - - /* -@@ -27792,6 +27796,36 @@ - return rc; - } - -+/* -+** Return the system page size. -+** -+** This function should not be called directly by other code in this file. -+** Instead, it should be called via macro osGetpagesize(). -+*/ -+static int unixGetpagesize(void){ -+#if defined(_BSD_SOURCE) -+ return getpagesize(); -+#else -+ return (int)sysconf(_SC_PAGESIZE); -+#endif -+} -+ -+/* -+** Return the minimum number of 32KB shm regions that should be mapped at -+** a time, assuming that each mapping must be an integer multiple of the -+** current system page-size. -+** -+** Usually, this is 1. The exception seems to be systems that are configured -+** to use 64KB pages - in this case each mapping must cover at least two -+** shm regions. -+*/ -+static int unixShmRegionPerMap(void){ -+ int shmsz = 32*1024; /* SHM region size */ -+ int pgsz = osGetpagesize(); /* System page size */ -+ assert( ((pgsz-1)&pgsz)==0 ); /* Page size must be a power of 2 */ -+ if( pgsz<shmsz ) return 1; -+ return pgsz/shmsz; -+} - - /* - ** Purge the unixShmNodeList list of all entries with unixShmNode.nRef==0. -@@ -27803,10 +27837,11 @@ - unixShmNode *p = pFd->pInode->pShmNode; - assert( unixMutexHeld() ); - if( p && p->nRef==0 ){ -+ int nShmPerMap = unixShmRegionPerMap(); - int i; - assert( p->pInode==pFd->pInode ); - sqlite3_mutex_free(p->mutex); -- for(i=0; i<p->nRegion; i++){ -+ for(i=0; i<p->nRegion; i+=nShmPerMap){ - if( p->h>=0 ){ - osMunmap(p->apRegion[i], p->szRegion); - }else{ -@@ -28013,6 +28048,8 @@ - unixShm *p; - unixShmNode *pShmNode; - int rc = SQLITE_OK; -+ int nShmPerMap = unixShmRegionPerMap(); -+ int nReqRegion; - - /* If the shared-memory file has not yet been opened, open it now. */ - if( pDbFd->pShm==0 ){ -@@ -28028,9 +28065,12 @@ - assert( pShmNode->h>=0 || pDbFd->pInode->bProcessLock==1 ); - assert( pShmNode->h<0 || pDbFd->pInode->bProcessLock==0 ); - -- if( pShmNode->nRegion<=iRegion ){ -+ /* Minimum number of regions required to be mapped. */ -+ nReqRegion = ((iRegion+nShmPerMap) / nShmPerMap) * nShmPerMap; -+ -+ if( pShmNode->nRegion<nReqRegion ){ - char **apNew; /* New apRegion[] array */ -- int nByte = (iRegion+1)*szRegion; /* Minimum required file size */ -+ int nByte = nReqRegion*szRegion; /* Minimum required file size */ - struct stat sStat; /* Used by fstat() */ - - pShmNode->szRegion = szRegion; -@@ -28079,17 +28119,19 @@ - - /* Map the requested memory region into this processes address space. */ - apNew = (char **)sqlite3_realloc( -- pShmNode->apRegion, (iRegion+1)*sizeof(char *) -+ pShmNode->apRegion, nReqRegion*sizeof(char *) - ); - if( !apNew ){ - rc = SQLITE_IOERR_NOMEM; - goto shmpage_out; - } - pShmNode->apRegion = apNew; -- while(pShmNode->nRegion<=iRegion){ -+ while( pShmNode->nRegion<nReqRegion ){ -+ int nMap = szRegion*nShmPerMap; -+ int i; - void *pMem; - if( pShmNode->h>=0 ){ -- pMem = osMmap(0, szRegion, -+ pMem = osMmap(0, nMap, - pShmNode->isReadonly ? PROT_READ : PROT_READ|PROT_WRITE, - MAP_SHARED, pShmNode->h, szRegion*(i64)pShmNode->nRegion - ); -@@ -28105,8 +28147,11 @@ - } - memset(pMem, 0, szRegion); - } -- pShmNode->apRegion[pShmNode->nRegion] = pMem; -- pShmNode->nRegion++; -+ -+ for(i=0; i<nShmPerMap; i++){ -+ pShmNode->apRegion[pShmNode->nRegion+i] = &((char*)pMem)[szRegion*i]; -+ } -+ pShmNode->nRegion += nShmPerMap; - } - } - -@@ -28321,19 +28366,6 @@ - } - - /* --** Return the system page size. --*/ --static int unixGetPagesize(void){ --#if HAVE_MREMAP -- return 512; --#elif defined(_BSD_SOURCE) -- return getpagesize(); --#else -- return (int)sysconf(_SC_PAGESIZE); --#endif --} -- --/* - ** Attempt to set the size of the memory mapping maintained by file - ** descriptor pFd to nNew bytes. Any existing mapping is discarded. - ** -@@ -28369,8 +28401,12 @@ - if( (pFd->ctrlFlags & UNIXFILE_RDONLY)==0 ) flags |= PROT_WRITE; - - if( pOrig ){ -- const int szSyspage = unixGetPagesize(); -+#if HAVE_MREMAP -+ i64 nReuse = pFd->mmapSize; -+#else -+ const int szSyspage = osGetpagesize(); - i64 nReuse = (pFd->mmapSize & ~(szSyspage-1)); -+#endif - u8 *pReq = &pOrig[nReuse]; - - /* Unmap any pages of the existing mapping that cannot be reused. */ -@@ -31116,7 +31152,7 @@ - - /* Double-check that the aSyscall[] array has been constructed - ** correctly. See ticket [bb3a86e890c8e96ab] */ -- assert( ArraySize(aSyscall)==24 ); -+ assert( ArraySize(aSyscall)==25 ); - - /* Register all VFSes defined in the aVfs[] array */ - for(i=0; i<(sizeof(aVfs)/sizeof(sqlite3_vfs)); i++){ |