From ab578ff5dbdc19b9647e3535e7d41306e46fab5d Mon Sep 17 00:00:00 2001
From: Fu Juntang <StrongTiger_001@163.com>
Date: 星期一, 30 八月 2021 19:32:58 +0800
Subject: [PATCH] Fix the return stat check.
---
src/svsem.cpp | 14 ++++----------
1 files changed, 4 insertions(+), 10 deletions(-)
diff --git a/src/svsem.cpp b/src/svsem.cpp
index 27c88a8..00e6dbc 100644
--- a/src/svsem.cpp
+++ b/src/svsem.cpp
@@ -1,7 +1,6 @@
#include "svsem.h"
int svsem_get(key_t key, unsigned int value) {
-// printf("==================svsem_get===============================\n");
int semid, perms;
perms = S_IRUSR | S_IWUSR;
@@ -12,8 +11,6 @@
union semun arg;
struct sembuf sop;
- //logger.info("%ld: created semaphore\n", (long)getpid());
-
arg.val = 0; /* So initialize it to 0 */
if (semctl(semid, 0, SETVAL, arg) == -1)
err_exit(errno, "semctl 1");
@@ -21,8 +18,7 @@
arg.val = 1;
if (semctl(semid, 1, SETVAL, arg) == -1)
err_exit(errno, "semctl 2");
- //logger.info("%ld: initialized semaphore\n", (long)getpid());
-
+
/* Perform a "no-op" semaphore operation - changes sem_otime
so other processes can see we've initialized the set. */
@@ -31,7 +27,6 @@
sop.sem_flg = 0;
if (semop(semid, &sop, 1) == -1)
err_exit(errno, "semop");
- //logger.info("%ld: completed dummy semop()\n", (long)getpid());
} else { /* We didn't create the semaphore set */
@@ -48,12 +43,10 @@
if (semid == -1)
err_exit(errno, "semget 2");
- // logger.info("%ld: got semaphore key\n", (long)getpid());
/* Wait until another process has called semop() */
arg.buf = &ds;
for (j = 0; j < MAX_TRIES; j++) {
- //logger.info("Try %d\n", j);
if (semctl(semid, 0, IPC_STAT, arg) == -1)
err_exit(errno, "semctl 2");
@@ -82,7 +75,8 @@
while (semop(semid, &sops, 1) == -1)
if (errno != EINTR) {
- // err_msg(errno, "svsem_dec");
+ err_msg(errno, "svsem_dec");
+
return -1;
}
@@ -266,4 +260,4 @@
-
\ No newline at end of file
+
--
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