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Expand the header comment to clarify the purpose for the

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sqlite3MemoryBarrier() function.

FossilOrigin-Name: b89495ae09aa0e9652475b2ba1943dfd87c73e07
This commit is contained in:
drh
2015-09-26 03:23:29 +00:00
parent 17db155fed
commit 539482b76a
4 changed files with 14 additions and 10 deletions
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4
src/mutex_unix.c
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@@ -81,7 +81,9 @@ static int pthreadMutexNotheld(sqlite3_mutex *p){
#endif
/*
** Try to provide a memory barrier operation, needed for initialization only.
** Try to provide a memory barrier operation, needed for initialization
** and also for the implementation of xShmBarrier in the VFS in cases
** where SQLite is compiled without mutexes.
*/
void sqlite3MemoryBarrier(void){
#if defined(SQLITE_MEMORY_BARRIER)