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Overview
Comment:Add the SQLITE_THREADS_OVERRIDE_LOCKS compile-time option that disables the run-time test to see if threads can override each others locks on unix. (CVS 3050)
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SHA1:e83a19e8cb6d721b02502925b362f2e86b2de742
User & Date: drh 2006-01-31 23:03:35
Context
2006-02-01
01:55
Added support for the -enable-thread-override-lock option on the configure script. (CVS 3051) check-in: 82f558bd user: drh tags: trunk
2006-01-31
23:03
Add the SQLITE_THREADS_OVERRIDE_LOCKS compile-time option that disables the run-time test to see if threads can override each others locks on unix. (CVS 3050) check-in: e83a19e8 user: drh tags: trunk
20:49
Patches to support linux on embedded platforms. (CVS 3049) check-in: a088eb6d user: drh tags: trunk
Changes
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Changes to src/os_unix.c.

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/*
** This variable records whether or not threads can override each others
** locks.
**
**    0:  No.  Threads cannot override each others locks.
**    1:  Yes.  Threads can override each others locks.
**   -1:  We don't know yet.






**
** 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.
*/



#ifdef SQLITE_TEST
int threadsOverrideEachOthersLocks = -1;
#else
static int threadsOverrideEachOthersLocks = -1;
#endif

/*
** This structure holds information passed into individual test
** threads by the testThreadLockingBehavior() routine.
*/
struct threadTestData {







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/*
** This variable records whether or not threads can override each others
** locks.
**
**    0:  No.  Threads cannot override each others locks.
**    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 = SQLITE_THREAD_OVERRIDE_LOCK;
#else
static int threadsOverrideEachOthersLocks = SQLITE_THREAD_OVERRIDE_LOCK;
#endif

/*
** This structure holds information passed into individual test
** threads by the testThreadLockingBehavior() routine.
*/
struct threadTestData {