diff options
Diffstat (limited to 'src/mutex_unix.c')
| -rw-r--r-- | src/mutex_unix.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/src/mutex_unix.c b/src/mutex_unix.c index 287a173c5..ff088fb53 100644 --- a/src/mutex_unix.c +++ b/src/mutex_unix.c @@ -11,7 +11,7 @@ ************************************************************************* ** This file contains the C functions that implement mutexes for pthreads ** -** $Id: mutex_unix.c,v 1.1 2007/08/28 16:34:43 drh Exp $ +** $Id: mutex_unix.c,v 1.2 2007/08/28 22:24:35 drh Exp $ */ #include "sqliteInt.h" @@ -34,6 +34,9 @@ struct sqlite3_mutex { int id; /* Mutex type */ int nRef; /* Number of entrances */ pthread_t owner; /* Thread that is within this mutex */ +#ifdef SQLITE_DEBUG + int trace; /* True to trace changes */ +#endif }; /* @@ -149,6 +152,11 @@ void sqlite3_mutex_enter(sqlite3_mutex *p){ pthread_mutex_lock(&p->mutex); p->owner = pthread_self(); p->nRef++; +#ifdef SQLITE_DEBUG + if( p->trace ){ + printf("enter mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef); + } +#endif } int sqlite3_mutex_try(sqlite3_mutex *p){ int rc; @@ -158,6 +166,11 @@ int sqlite3_mutex_try(sqlite3_mutex *p){ p->owner = pthread_self(); p->nRef++; rc = SQLITE_OK; +#ifdef SQLITE_DEBUG + if( p->trace ){ + printf("enter mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef); + } +#endif }else{ rc = SQLITE_BUSY; } @@ -175,6 +188,11 @@ void sqlite3_mutex_leave(sqlite3_mutex *p){ assert( sqlite3_mutex_held(p) ); p->nRef--; assert( p->nRef==0 || p->id==SQLITE_MUTEX_RECURSIVE ); +#ifdef SQLITE_DEBUG + if( p->trace ){ + printf("leave mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef); + } +#endif pthread_mutex_unlock(&p->mutex); } |