psycopg/psycopg2
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Keep the GIL while converting the xid into the PostgreSQL transaction id.

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This commit is contained in:
Daniele Varrazzo 2010-10-11 00:03:08 +01:00
parent 397eace051
commit 17d70babb1
3 changed files with 18 additions and 12 deletions
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19
psycopg/connection_int.c
View File

@ -939,21 +939,30 @@ conn_tpc_command(connectionObject *self, const char *cmd, XidObject *xid)
{
PGresult *pgres = NULL;
char *error = NULL;
int rv;
char *tid = NULL;
int rv = -1;
Dprintf("conn_tpc_command: %s", cmd);
/* convert the xid into PostgreSQL transaction id while keeping the GIL */
if (!(tid = xid_get_tid(xid))) { goto exit; }
Py_BEGIN_ALLOW_THREADS;
pthread_mutex_lock(&self->lock);
rv = pq_tpc_command_locked(self, cmd, xid, &pgres, &error, &_save);
if (0 > (rv = pq_tpc_command_locked(self, cmd, tid,
&pgres, &error, &_save))) {
pthread_mutex_unlock(&self->lock);
Py_BLOCK_THREADS;
pq_complete_error(self, &pgres, &error);
goto exit;
}
pthread_mutex_unlock(&self->lock);
Py_END_ALLOW_THREADS;
if (rv < 0) {
pq_complete_error(self, &pgres, &error);
}
exit:
PyMem_Free(tid);
return rv;
}

9
psycopg/pqpath.c
View File

@ -617,19 +617,17 @@ pq_reset(connectionObject *conn)
* holding the global interpreter lock. */
int
pq_tpc_command_locked(connectionObject *conn, const char *cmd, XidObject *xid,
PGresult **pgres, char **error,
PyThreadState **tstate)
pq_tpc_command_locked(connectionObject *conn, const char *cmd, const char *tid,
PGresult **pgres, char **error, PyThreadState **tstate)
{
int rv = -1;
char *tid = NULL, *etid = NULL, *buf = NULL;
char *etid = NULL, *buf = NULL;
Py_ssize_t buflen;
Dprintf("_pq_tpc_command: pgconn = %p, command = %s",
conn->pgconn, cmd);
/* convert the xid into the postgres transaction_id and quote it. */
if (!(tid = xid_get_tid(xid))) { goto exit; }
if (!(etid = psycopg_escape_string((PyObject *)conn, tid, 0, NULL, NULL)))
{ goto exit; }
@ -647,7 +645,6 @@ pq_tpc_command_locked(connectionObject *conn, const char *cmd, XidObject *xid,
exit:
PyMem_Free(buf);
PyMem_Free(etid);
PyMem_Free(tid);
return rv;
}

2
psycopg/pqpath.h
View File

@ -47,7 +47,7 @@ HIDDEN int pq_abort_locked(connectionObject *conn, PGresult **pgres,
HIDDEN int pq_abort(connectionObject *conn);
HIDDEN int pq_reset(connectionObject *conn);
HIDDEN int pq_tpc_command_locked(connectionObject *conn,
const char *cmd, XidObject *xid,
const char *cmd, const char *tid,
PGresult **pgres, char **error,
PyThreadState **tstate);
HIDDEN int pq_is_busy(connectionObject *conn);