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Add the SQLITE_THREADS_OVERRIDE_LOCKS compile-time option that disables

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the run-time test to see if threads can override each others locks on unix. (CVS 3050)

FossilOrigin-Name: e83a19e8cb6d721b02502925b362f2e86b2de742
This commit is contained in:
drh
2006-01-31 23:03:35 +00:00
parent 15b9a15a8d
commit 5062d3a048
3 changed files with 18 additions and 9 deletions
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13
src/os_unix.c
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@@ -353,14 +353,23 @@ static Hash openHash = { SQLITE_HASH_BINARY, 0, 0, 0, 0, 0 };
** 1: Yes. Threads can override each others locks.
** -1: We don't know yet.
**
** On some systems, we know at compile-time if threads can override each
** others locks. On those systems, the SQLITE_THREAD_OVERRIDE_LOCK macro
** will be set appropriately. On other systems, we have to check at
** runtime. On these latter systems, SQLTIE_THREAD_OVERRIDE_LOCK is
** undefined.
**
** This variable normally has file scope only. But during testing, we make
** it a global so that the test code can change its value in order to verify
** that the right stuff happens in either case.
*/
#ifndef SQLITE_THREAD_OVERRIDE_LOCK
# define SQLITE_THREAD_OVERRIDE_LOCK -1
#endif
#ifdef SQLITE_TEST
int threadsOverrideEachOthersLocks = -1;
int threadsOverrideEachOthersLocks = SQLITE_THREAD_OVERRIDE_LOCK;
#else
static int threadsOverrideEachOthersLocks = -1;
static int threadsOverrideEachOthersLocks = SQLITE_THREAD_OVERRIDE_LOCK;
#endif
/*