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Overview
| Comment: | Fix a benign data race in os_unix.c that might trouble tsan and similar tools. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
95806ac1dabe4598170061d903ae30f0 |
| User & Date: | dan 2021-11-19 14:02:43.242 |
Context
|
2021-11-19
| ||
| 19:11 | Small performance increase and size reduction for sqlite3ExprCompare(). This change also handles some corner cases without the need for ALWAYS(). (check-in: d814ba6eff user: drh tags: trunk) | |
| 14:02 | Fix a benign data race in os_unix.c that might trouble tsan and similar tools. (check-in: 95806ac1da user: dan tags: trunk) | |
|
2021-11-18
| ||
| 20:56 | Minor tweaks to the way auxiliary tools are built, to make it easier to customize the builds without having to alter the code. (check-in: 90b06b6f42 user: drh tags: trunk) | |
Changes
Changes to src/os_unix.c.
| ︙ | ︙ | |||
5793 5794 5795 5796 5797 5798 5799 5800 5801 5802 5803 5804 5805 |
}else{
pId->pMethods = pLockingStyle;
OpenCounter(+1);
verifyDbFile(pNew);
}
return rc;
}
/*
** Return the name of a directory in which to put temporary files.
** If no suitable temporary file directory can be found, return NULL.
*/
static const char *unixTempFileDir(void){
| > > > > > > > > > > > > > > > > > > > > < < < < < < < < < < | | | 5793 5794 5795 5796 5797 5798 5799 5800 5801 5802 5803 5804 5805 5806 5807 5808 5809 5810 5811 5812 5813 5814 5815 5816 5817 5818 5819 5820 5821 5822 5823 5824 5825 5826 5827 5828 5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 5844 5845 5846 |
}else{
pId->pMethods = pLockingStyle;
OpenCounter(+1);
verifyDbFile(pNew);
}
return rc;
}
/*
** Directories to consider for temp files.
*/
static const char *azTempDirs[] = {
0,
0,
"/var/tmp",
"/usr/tmp",
"/tmp",
"."
};
/*
** Initialize first two members of azTempDirs[] array.
*/
static void unixTempFileInit(void){
azTempDirs[0] = getenv("SQLITE_TMPDIR");
azTempDirs[1] = getenv("TMPDIR");
}
/*
** Return the name of a directory in which to put temporary files.
** If no suitable temporary file directory can be found, return NULL.
*/
static const char *unixTempFileDir(void){
unsigned int i = 0;
struct stat buf;
const char *zDir = sqlite3_temp_directory;
while(1){
if( zDir!=0
&& osStat(zDir, &buf)==0
&& S_ISDIR(buf.st_mode)
&& osAccess(zDir, 03)==0
){
return zDir;
}
if( i>=sizeof(azTempDirs)/sizeof(azTempDirs[0]) ) break;
zDir = azTempDirs[i++];
}
return 0;
}
/*
** Create a temporary file name in zBuf. zBuf must be allocated
** by the calling process and must be big enough to hold at least
|
| ︙ | ︙ | |||
8093 8094 8095 8096 8097 8098 8099 8100 8101 8102 8103 8104 8105 8106 | ** READ-2 UNIX_SHM_BASE+5 125 ** READ-3 UNIX_SHM_BASE+6 126 ** READ-4 UNIX_SHM_BASE+7 127 ** DMS UNIX_SHM_BASE+8 128 */ assert( UNIX_SHM_DMS==128 ); /* Byte offset of the deadman-switch */ #endif return SQLITE_OK; } /* ** Shutdown the operating system interface. ** | > > > | 8103 8104 8105 8106 8107 8108 8109 8110 8111 8112 8113 8114 8115 8116 8117 8118 8119 | ** READ-2 UNIX_SHM_BASE+5 125 ** READ-3 UNIX_SHM_BASE+6 126 ** READ-4 UNIX_SHM_BASE+7 127 ** DMS UNIX_SHM_BASE+8 128 */ assert( UNIX_SHM_DMS==128 ); /* Byte offset of the deadman-switch */ #endif /* Initialize temp file dir array. */ unixTempFileInit(); return SQLITE_OK; } /* ** Shutdown the operating system interface. ** |
| ︙ | ︙ |