database/postgres
database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-05-06 19:59:18 +03:00
Code

flock --> fcntl

Browse Source
This commit is contained in:
Vadim B. Mikheev 1998-09-10 04:07:59 +00:00
parent f4c222f986
commit ee00b75441
1 changed files with 14 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/backend/libpq/pqcomm.c
View File

@ -1,4 +1,4 @@
/*------------------------------------------------------------------------- /*-------------------------------------------------------------------------
* *
* pqcomm.c-- * pqcomm.c--
* Communication functions between the Frontend and the Backend * Communication functions between the Frontend and the Backend
@ -7,7 +7,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/libpq/pqcomm.c,v 1.53 1998/09/01 04:28:51 momjian Exp $ * $Header: /cvsroot/pgsql/src/backend/libpq/pqcomm.c,v 1.54 1998/09/10 04:07:59 vadim Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -562,7 +562,11 @@ StreamServerPort(char *hostName, short portName, int *fdP)
*/ */
if ((lock_fd = open(sock_path, O_RDONLY | O_NONBLOCK, 0666)) >= 0) if ((lock_fd = open(sock_path, O_RDONLY | O_NONBLOCK, 0666)) >= 0)
{ {
if (flock(lock_fd, LOCK_EX | LOCK_NB) == 0) struct flock lck;
lck.l_whence = SEEK_SET; lck.l_start = lck.l_len = 0;
lck.l_type = F_WRLCK;
if (fcntl(lock_fd, F_SETLK, &lck) == 0)
{ {
TPRINTF(TRACE_VERBOSE, "flock on %s, deleting", sock_path); TPRINTF(TRACE_VERBOSE, "flock on %s, deleting", sock_path);
unlink(sock_path); unlink(sock_path);
@ -607,7 +611,11 @@ StreamServerPort(char *hostName, short portName, int *fdP)
*/ */
if ((lock_fd = open(sock_path, O_RDONLY | O_NONBLOCK, 0666)) >= 0) if ((lock_fd = open(sock_path, O_RDONLY | O_NONBLOCK, 0666)) >= 0)
{ {
if (flock(lock_fd, LOCK_EX | LOCK_NB) != 0) struct flock lck;
lck.l_whence = SEEK_SET; lck.l_start = lck.l_len = 0;
lck.l_type = F_WRLCK;
if (fcntl(lock_fd, F_SETLK, &lck) != 0)
TPRINTF(TRACE_VERBOSE, "flock error for %s", sock_path); TPRINTF(TRACE_VERBOSE, "flock error for %s", sock_path);
} }
} }
@ -790,3 +798,5 @@ pq_putncharlen(char *s, int n)
} }
#endif #endif