commit 3bd8345

Fixed the issue of semaphore name conflicts.

 1@@ -480,6 +480,7 @@ void httpd(void)
 2     pthread_t threads[MAX_THREADS] = {0};
 3     int n_threads = 0;
 4     int n;
 5+    char sem_name[24];
 6 
 7     address = xs_dict_get(srv_config, "address");
 8     port    = xs_number_get(xs_dict_get(srv_config, "port"));
 9@@ -505,7 +506,8 @@ void httpd(void)
10 
11     /* initialize the job control engine */
12     pthread_mutex_init(&job_mutex, NULL);
13-    job_sem = sem_open("/job", O_CREAT, 0644, 0);
14+    sprintf(sem_name, "/job_%d", getpid());
15+    job_sem = sem_open(sem_name, O_CREAT, 0644, 0);
16     job_fifo = xs_list_new();
17 
18     /* initialize sleep control */
19@@ -565,6 +567,7 @@ void httpd(void)
20     pthread_mutex_unlock(&job_mutex);
21 
22     sem_close(job_sem);
23+    sem_unlink(sem_name);
24 
25     srv_log(xs_fmt("httpd stop %s:%d", address, port));
26 }