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use file locks to keep multiple concurrent copies of freeswitch from running at the same time (FSCORE-14)

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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6575 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Michael Jerris
2007-12-08 03:41:00 +00:00
parent 501fd22d8a
commit 1b63fa5503
3 changed files with 67 additions and 11 deletions
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48
src/switch.c
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@@ -38,6 +38,7 @@
#endif
#include <switch.h>
#include "private/switch_core_pvt.h"
/* pid filename: Stores the process id of the freeswitch process */
#define PIDFILE "freeswitch.pid"
@@ -198,6 +199,8 @@ void WINAPI service_main(DWORD numArgs, char **args)
int main(int argc, char *argv[])
{
char pid_path[256] = ""; /* full path to the pid file */
char pid_buffer[32] = ""; /* pid string */
switch_size_t pid_len;
const char *err = NULL; /* error value for return from freeswitch initialization */
#ifndef WIN32
int nf = 0; /* TRUE if we are running in nofork mode */
@@ -205,7 +208,6 @@ int main(int argc, char *argv[])
char *runas_group = NULL;
#endif
int nc = 0; /* TRUE if we are running in noconsole mode */
FILE *f; /* file handle to the pid file */
pid_t pid = 0;
int x;
int die = 0;
@@ -215,6 +217,9 @@ int main(int argc, char *argv[])
int high_prio = 0;
switch_core_flag_t flags = SCF_USE_SQL;
int status;
switch_file_t *fd;
switch_memory_pool_t *pool = NULL;
#ifdef WIN32
SERVICE_TABLE_ENTRY dispatchTable[] = {
@@ -417,25 +422,46 @@ int main(int argc, char *argv[])
}
#endif
if (apr_initialize() != SWITCH_STATUS_SUCCESS) {
fprintf(stderr, "FATAL ERROR! Could not initilize APR\n");
return 255;
}
switch_core_set_globals();
pid = getpid();
snprintf(pid_path, sizeof(pid_path), "%s%s%s", SWITCH_GLOBAL_dirs.log_dir, SWITCH_PATH_SEPARATOR, pfile);
snprintf(pid_buffer, sizeof(pid_buffer), "%d", pid);
pid_len = strlen(pid_buffer);
apr_pool_create(&pool, NULL);
if (switch_file_open(&fd,
pid_path,
SWITCH_FOPEN_WRITE | SWITCH_FOPEN_CREATE,
SWITCH_FPROT_UREAD | SWITCH_FPROT_UWRITE,
pool) != SWITCH_STATUS_SUCCESS) {
fprintf(stderr, "Cannot open pid file %s.\n", pid_path);
return 255;
}
if (switch_file_lock(fd, SWITCH_FLOCK_EXCLUSIVE | SWITCH_FLOCK_NONBLOCK) != SWITCH_STATUS_SUCCESS) {
fprintf(stderr, "Cannot lock pid file %s.\n", pid_path);
return 255;
}
switch_file_write(fd, pid_buffer, &pid_len);
if (switch_core_init_and_modload(flags, nc ? SWITCH_FALSE : SWITCH_TRUE, &err) != SWITCH_STATUS_SUCCESS) {
fprintf(stderr, "Cannot Initilize [%s]\n", err);
return 255;
}
snprintf(pid_path, sizeof(pid_path), "%s%s%s", SWITCH_GLOBAL_dirs.log_dir, SWITCH_PATH_SEPARATOR, pfile);
if ((f = fopen(pid_path, "w")) == 0) {
fprintf(stderr, "Cannot open pid file %s.\n", pid_path);
return 255;
}
fprintf(f, "%d", pid = getpid());
fflush(f);
switch_core_runtime_loop(nc);
status = switch_core_destroy();
fclose(f);
switch_file_close(fd);
unlink(pid_path);
return status;