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Add thread locking to SSL and Kerberos connections.

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I have removed the docs mentioning that SSL and Kerberos are not
thread-safe.

Manfred Spraul
This commit is contained in:
Bruce Momjian
2004-03-24 03:45:00 +00:00
parent fcfa2c790a
commit 6daf396879
7 changed files with 222 additions and 46 deletions
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45
src/interfaces/libpq/fe-connect.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/interfaces/libpq/fe-connect.c,v 1.268 2004/03/10 21:12:47 momjian Exp $
* $PostgreSQL: pgsql/src/interfaces/libpq/fe-connect.c,v 1.269 2004/03/24 03:44:59 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -2902,7 +2902,7 @@ int
PQsetClientEncoding(PGconn *conn, const char *encoding)
{
char qbuf[128];
static char query[] = "set client_encoding to '%s'";
static const char query[] = "set client_encoding to '%s'";
PGresult *res;
int status;
@ -3164,3 +3164,44 @@ PasswordFromFile(char *hostname, char *port, char *dbname, char *username)
#undef LINELEN
}
/*
* To keep the API consistent, the locking stubs are always provided, even
* if they are not required.
*/
void
PQinitSSL(int do_init)
{
#ifdef USE_SSL
pq_initssllib = do_init;
#endif
}
static pgthreadlock_t default_threadlock;
static void
default_threadlock(int acquire)
{
#ifdef ENABLE_THREAD_SAFETY
static pthread_mutex_t singlethread_lock = PTHREAD_MUTEX_INITIALIZER;
if (acquire)
pthread_mutex_lock(&singlethread_lock);
else
pthread_mutex_unlock(&singlethread_lock);
#endif
}
pgthreadlock_t *g_threadlock = default_threadlock;
pgthreadlock_t *
PQregisterThreadLock(pgthreadlock_t *newhandler)
{
pgthreadlock_t *prev;
prev = g_threadlock;
if (newhandler)
g_threadlock = newhandler;
else
g_threadlock = default_threadlock;
return prev;
}