static void sigstop(int signo)
{
mw_stop_aaa();
delete_pid_file(IMAGE_SERVER_PROC);
APP_PRINTF("Exit image_server!\n");
exit(1);
}
static void
sigint (int foo)
{
arla_warnx (ADEBMISC, "fatal signal received");
store_state ();
delete_pid_file ();
exit (0);
}
/** Ths signal handler for nasty, fatal signals.
*/
static void handle_fatal_signal(int sig, siginfo_t *siginfo, void *ctx)
{
int i, POSSIBLY_UNUSED(res), bsize;
void *bentries[128];
char *buf = (char*)bentries;
for (i = 0; i < NUM_FATAL_SIGNALS; ++i) {
signal(FATAL_SIGNALS[i], SIG_IGN);
}
if (sig == SIGALRM) {
snprintf(buf, sizeof(bentries), "%s ALARM EXPIRED\n",
(const char*)siginfo->si_value.sival_ptr);
res = write(g_crash_log_fd, buf, strlen(buf));
}
snprintf(buf, sizeof(bentries), "HANDLE_FATAL_SIGNAL(sig=%d, "
"name=%s)\n", sig, sys_siglist[sig]);
res = write(g_crash_log_fd, buf, strlen(buf));
signal_analyze_plat_data(ctx, buf, sizeof(bentries));
res = write(g_crash_log_fd, buf, strlen(buf));
bsize = backtrace(bentries, sizeof(bentries)/sizeof(bentries[0]));
backtrace_symbols_fd(bentries, bsize, g_crash_log_fd);
snprintf(buf, sizeof(bentries), "END_HANDLE_FATAL_SIGNAL\n");
res = write(g_crash_log_fd, buf, strlen(buf));
fsync(g_crash_log_fd);
if (g_crash_log_fd != STDERR_FILENO) {
/* This function reads the file we just wrote, and sends it to
* some other output streams.
*
* We always write it to stderr. Most of the time, stderr will
* be hooked to /dev/null, but sometimes it isn't.
*
* If use_syslog was specified, we write the file to syslog.
* Technically, we're not supposed to do this, because syslog is
* not a signal-safe function. However, we've already written
* out the crash_log, so there will be some record of what went
* wrong, even if we crash and burn in this function. Also, in
* practice, syslog tends to do non-signal-safe stuff like call
* malloc only on the first invocation or when openlog is
* called.
*/
regurgitate_fd((char*)bentries, sizeof(bentries),
g_crash_log_fd, -1, g_use_syslog);
}
/* If the pid file has not been set up, this will do nothing. */
delete_pid_file();
/* dump fast logs */
fast_log_mgr_dump_all(g_fast_log_mgr, g_fast_log_fd);
snprintf(buf, sizeof(bentries), "END_FAST_LOG_DUMP\n");
res = write(g_crash_log_fd, buf, strlen(buf));
fsync(g_crash_log_fd);
/* Call the previously install signal handler.
* Probably, this will dump core. */
g_prev_handlers[sig](sig, siginfo, ctx);
}
/*
* semaphore get/put wrapper
*/
int down(int sem_id)
{
struct sembuf buf = {
.sem_num = 0,
.sem_op = -1,
.sem_flg = SEM_UNDO,
};
return semop(sem_id, &buf, 1);
}
int up(int sem_id)
{
struct sembuf buf = {
.sem_num = 0,
.sem_op = 1,
.sem_flg = SEM_UNDO,
};
return semop(sem_id, &buf, 1);
}
void delete_pid_file(void)
{
if (!pid_filename)
return;
if (unlink(pid_filename) < 0)
perror(pid_filename);
}
void update_pid_file(pid_t pid)
{
FILE *file;
if (!pid_filename)
return;
file = fopen(pid_filename, "w");
if (!file) {
perror(pid_filename);
exit(1);
}
fprintf(file, "%d\n", pid);
fclose(file);
}
void sighandler(int sig, siginfo_t *si, void *arg)
{
up(sem_id);
delete_pid_file();
fprintf(stderr, "Fatal signal %d\n", sig);
exit(1);
}
void application::stop()
{
LOG_COMP_INFO(application, "terminating");
try
{
server_.stop();
delete_pid_file();
}
catch(std::exception const& e)
{
LOG_COMP_FAILURE(application, e);
}
}
/* Cleanup and then exit */
void terminate_dird(int sig)
{
static bool already_here = false;
if (already_here) { /* avoid recursive temination problems */
bmicrosleep(2, 0); /* yield */
exit(1);
}
already_here = true;
debug_level = 0; /* turn off debug */
stop_watchdog();
db_sql_pool_destroy();
db_flush_backends();
unload_dir_plugins();
write_state_file(me->working_directory, "bareos-dir", get_first_port_host_order(me->DIRaddrs));
delete_pid_file(me->pid_directory, "bareos-dir", get_first_port_host_order(me->DIRaddrs));
term_scheduler();
term_job_server();
if (runjob) {
free(runjob);
}
if (configfile != NULL) {
free(configfile);
}
if (debug_level > 5) {
print_memory_pool_stats();
}
if (my_config) {
my_config->free_resources();
free(my_config);
my_config = NULL;
}
stop_UA_server();
term_msg(); /* terminate message handler */
cleanup_crypto();
close_memory_pool(); /* release free memory in pool */
lmgr_cleanup_main();
sm_dump(false);
exit(sig);
}
int main(int argc, char *argv[])
{
pid_t pid;
/* Reset signal handlers */
if (daemon_reset_sigs(-1) < 0) {
daemon_log(LOG_ERR, "Failed to reset all signal handlers: %s",
strerror(errno));
return 1;
}
/* Unblock signals */
if (daemon_unblock_sigs(-1) < 0) {
daemon_log(LOG_ERR, "Failed to unblock all signals: %s",
strerror(errno));
}
/* Set indetification string for the daemon for both syslog and PID file */
daemon_log_ident = daemon_ident_from_argv0(argv[0]);
daemon_pid_file_ident = daemon_log_ident;
//(LOG_ERR, "The log ident is %s\n",daemon_log_ident);
daemon_pid_file_proc = get_pid_file_proc;
sprintf (image_pid_file, "/var/run/%s.pid", daemon_pid_file_ident);
/* Check if we are called with -k parameter */
if (argc >= 2 && !strcmp(argv[1], "-k")) {
int ret;
/* Kill daemon with SIGTERM */
/* Check if the new function daemon_pid_file_kill_wait() is available,
if it is, use it. */
if ((ret = daemon_pid_file_kill_wait(SIGTERM, 5)) < 0)
daemon_log(LOG_WARNING, "Failed to kill daemon: %s",
strerror(errno));
return ret < 0 ? 1 : 0;
}
/* Check that the daemon is not rung twice a the same time */
if ((pid = daemon_pid_file_is_running()) >= 0) {
daemon_log(LOG_ERR, "Daemon already running on PID file %u", pid);
return 1;
}
/* Prepare for return value passing from the initialization procedure
of the daemon process */
if (daemon_retval_init() < 0) {
daemon_log(LOG_ERR, "Failed to create pipe.");
return 1;
}
/* Do the fork */
if ((pid = daemon_fork()) < 0) {
/* Exit on error */
daemon_retval_done();
return 1;
} else if (pid) { /* The parent */
int ret;
/* Wait for 20 seconds for the return value passed from the daemon
process */
if ((ret = daemon_retval_wait(20)) < 0) {
daemon_log(LOG_ERR, "Count not receive return value from daemon"
"process: %s", strerror(errno));
}
//daemon_log(ret != 0 ? LOG_ERR : LOG_INFO,
// "Daemon returned %i as return value.", ret);
return ret;
} else { /* The daemon */
int fd, quit = 0;
fd_set fds;
pthread_t sock_thread;
pthread_t nl_thread;
/* Close FDs */
if (daemon_close_all(-1) < 0) {
daemon_log(LOG_ERR, "Failed to close all file descriptors: %s",
strerror(errno));
/* Send the error condition to the parent process */
daemon_retval_send(1);
goto finish;
}
/* Create the PID file */
if (daemon_pid_file_create() < 0) {
daemon_log(LOG_ERR, "Could not create PID file (%s).",
strerror(errno));
daemon_retval_send(2);
goto finish;
}
/* Initialize signal handling */
if (daemon_signal_init(SIGINT, SIGTERM, SIGQUIT, SIGHUP, 0) < 0) {
daemon_log(LOG_ERR, "Could not register signal handlers (%s).",
strerror(errno));
daemon_retval_send(3);
goto finish;
}
/* Init task */
init_image_config(argc, argv);
init_netlink();
/* Send OK to parent process */
daemon_retval_send(0);
daemon_log(LOG_INFO, "Sucessfully started");
/* Main task*/
pthread_create(&nl_thread, NULL, (void *)netlink_loop, (void *)NULL);
#if 0
pthread_create(&sock_thread, NULL, (void *)socket_loop, (void *)NULL);
#endif
pthread_create(&sock_thread, NULL, (void *)mq_loop, (void *)NULL);
/* Prepare for select() on the signal fd */
FD_ZERO(&fds);
fd = daemon_signal_fd();
FD_SET(fd, &fds);
while (!quit) {
fd_set fds2 = fds;
/* Wait for an incoming signal */
if (select(FD_SETSIZE, &fds2, 0, 0, 0) < 0) {
/* If we've been interrupted by an incoming signal, continue */
if (errno == EINTR)
continue;
daemon_log(LOG_ERR, "select(): %s", strerror(errno));
break;
}
/* Check if a signal has been recieved */
if (FD_ISSET(fd, &fds2)) {
int sig;
/* Get signal */
if ((sig = daemon_signal_next()) <= 0) {
daemon_log(LOG_ERR, "daemon_signal_next() failed: %s",
strerror(errno));
break;
}
/* Dispatch signal */
switch (sig) {
case SIGINT:
case SIGQUIT:
case SIGTERM:
daemon_log(LOG_WARNING, "Got SIGINT, SIGQUIT or"
"SIGTERM.");
if (nl_image_config.nl_connected == 1) {
nl_image_config.nl_connected = 0;
if (nl_send_image_session_cmd(
IMAGE_SESSION_CMD_DISCONNECT) < 0) {
printf("Failed to remove connection with"
"kernel!\n");
}
}
quit = 1;
break;
case SIGHUP:
daemon_log(LOG_INFO, "Got a HUP");
daemon_exec("/", NULL, "/bin/ls", "ls", (char*) NULL);
break;
}
}
}
/* Do a cleanup */
finish:
delete_pid_file(IMAGE_SERVER_PROC);
daemon_log(LOG_INFO, "Exiting...");
daemon_retval_send(255);
daemon_signal_done();
daemon_pid_file_remove();
return 0;
}
}
int main(int argc, const char* argv[])
{
FILE *log = get_log (NULL);
switch (process_options(argc, argv, log))
{
case 0:
break;
case -1:
exit(EXIT_SUCCESS);
default:
exit(EXIT_FAILURE);
}
if ( ! arg_nodaemonize )
{
close_log (log); /* close before daemonizing */
daemonize();
}
log = get_log (log); /* reopen */
LOG_INF(log, "Initializing - lwes-journaller-%s\n", VERSION);
if (write_pid_file() != 0)
{
LOG_ER(log,"Can't open PID file \"%s\"\n", arg_pid_file);
}
if ( arg_njournalls > 30 )
{
LOG_WARN(log, "suspiciously large (%d) number of journals.",
arg_njournalls);
}
LOG_INF(log, "Starting up - lwes-journaller-%s using %s model\n",
VERSION, arg_proc_type);
if ( strcmp(arg_proc_type, ARG_PROCESS) == 0 )
{
process_model(argv, log);
}
if ( strcmp(arg_proc_type, ARG_THREAD) == 0 )
{
thread_model(log);
}
if ( strcmp(arg_proc_type, ARG_SERIAL) == 0 )
{
serial_model(log);
}
int r = 0;
if ((r = delete_pid_file()) < 0)
{
LOG_ER(log,"Unable to delete pid file : %s\n",
delete_pid_file, strerror(r));
}
options_destructor();
LOG_INF(log, "Normal shutdown complete - lwes-journaller-%s\n", VERSION);
close_log (log);
return 0;
}
static void
sighup (int foo)
{
store_state ();
delete_pid_file ();
}
int main(int argc, char *argv[])
{
char *conf_filename;
int result;
int sock;
int wait_count;
pthread_t schedule_tid;
struct sigaction act;
ScheduleEntry scheduleEntries[SCHEDULE_ENTRIES_MAX_COUNT];
ScheduleArray scheduleArray;
char pidFilename[MAX_PATH_SIZE];
bool stop;
if (argc < 2)
{
usage(argv[0]);
return 1;
}
g_current_time = time(NULL);
g_up_time = g_current_time;
log_init2();
trunk_shared_init();
conf_filename = argv[1];
if ((result=get_base_path_from_conf_file(conf_filename,
g_fdfs_base_path, sizeof(g_fdfs_base_path))) != 0)
{
log_destroy();
return result;
}
snprintf(pidFilename, sizeof(pidFilename),
"%s/data/fdfs_storaged.pid", g_fdfs_base_path);
if ((result=process_action(pidFilename, argv[2], &stop)) != 0)
{
if (result == EINVAL)
{
usage(argv[0]);
}
log_destroy();
return result;
}
if (stop)
{
log_destroy();
return 0;
}
#if defined(DEBUG_FLAG) && defined(OS_LINUX)
if (getExeAbsoluteFilename(argv[0], g_exe_name, \
sizeof(g_exe_name)) == NULL)
{
logCrit("exit abnormally!\n");
log_destroy();
return errno != 0 ? errno : ENOENT;
}
#endif
memset(g_bind_addr, 0, sizeof(g_bind_addr));
if ((result=storage_func_init(conf_filename, \
g_bind_addr, sizeof(g_bind_addr))) != 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
sock = socketServer(g_bind_addr, g_server_port, &result);
if (sock < 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
if ((result=tcpsetserveropt(sock, g_fdfs_network_timeout)) != 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
daemon_init(false);
umask(0);
if ((result=write_to_pid_file(pidFilename)) != 0)
{
log_destroy();
return result;
}
if ((result=storage_sync_init()) != 0)
{
logCrit("file: "__FILE__", line: %d, " \
"storage_sync_init fail, program exit!", __LINE__);
g_continue_flag = false;
return result;
}
if ((result=tracker_report_init()) != 0)
{
logCrit("file: "__FILE__", line: %d, " \
"tracker_report_init fail, program exit!", __LINE__);
g_continue_flag = false;
return result;
}
if ((result=storage_service_init()) != 0)
{
logCrit("file: "__FILE__", line: %d, " \
"storage_service_init fail, program exit!", __LINE__);
g_continue_flag = false;
return result;
}
if ((result=set_rand_seed()) != 0)
{
logCrit("file: "__FILE__", line: %d, " \
"set_rand_seed fail, program exit!", __LINE__);
g_continue_flag = false;
return result;
}
memset(&act, 0, sizeof(act));
sigemptyset(&act.sa_mask);
act.sa_handler = sigUsrHandler;
if(sigaction(SIGUSR1, &act, NULL) < 0 || \
sigaction(SIGUSR2, &act, NULL) < 0)
{
logCrit("file: "__FILE__", line: %d, " \
"call sigaction fail, errno: %d, error info: %s", \
__LINE__, errno, STRERROR(errno));
logCrit("exit abnormally!\n");
return errno;
}
act.sa_handler = sigHupHandler;
if(sigaction(SIGHUP, &act, NULL) < 0)
{
logCrit("file: "__FILE__", line: %d, " \
"call sigaction fail, errno: %d, error info: %s", \
__LINE__, errno, STRERROR(errno));
logCrit("exit abnormally!\n");
return errno;
}
act.sa_handler = SIG_IGN;
if(sigaction(SIGPIPE, &act, NULL) < 0)
{
logCrit("file: "__FILE__", line: %d, " \
"call sigaction fail, errno: %d, error info: %s", \
__LINE__, errno, STRERROR(errno));
logCrit("exit abnormally!\n");
return errno;
}
act.sa_handler = sigQuitHandler;
if(sigaction(SIGINT, &act, NULL) < 0 || \
sigaction(SIGTERM, &act, NULL) < 0 || \
sigaction(SIGQUIT, &act, NULL) < 0)
{
logCrit("file: "__FILE__", line: %d, " \
"call sigaction fail, errno: %d, error info: %s", \
__LINE__, errno, STRERROR(errno));
logCrit("exit abnormally!\n");
return errno;
}
#if defined(DEBUG_FLAG)
/*
#if defined(OS_LINUX)
memset(&act, 0, sizeof(act));
act.sa_sigaction = sigSegvHandler;
act.sa_flags = SA_SIGINFO;
if (sigaction(SIGSEGV, &act, NULL) < 0 || \
sigaction(SIGABRT, &act, NULL) < 0)
{
logCrit("file: "__FILE__", line: %d, " \
"call sigaction fail, errno: %d, error info: %s", \
__LINE__, errno, STRERROR(errno));
logCrit("exit abnormally!\n");
return errno;
}
#endif
*/
memset(&act, 0, sizeof(act));
sigemptyset(&act.sa_mask);
act.sa_handler = sigDumpHandler;
if(sigaction(SIGUSR1, &act, NULL) < 0 || \
sigaction(SIGUSR2, &act, NULL) < 0)
{
logCrit("file: "__FILE__", line: %d, " \
"call sigaction fail, errno: %d, error info: %s", \
__LINE__, errno, STRERROR(errno));
logCrit("exit abnormally!\n");
return errno;
}
#endif
#ifdef WITH_HTTPD
if (!g_http_params.disabled)
{
if ((result=storage_httpd_start(g_bind_addr)) != 0)
{
logCrit("file: "__FILE__", line: %d, " \
"storage_httpd_start fail, " \
"program exit!", __LINE__);
return result;
}
}
#endif
if ((result=tracker_report_thread_start()) != 0)
{
logCrit("file: "__FILE__", line: %d, " \
"tracker_report_thread_start fail, " \
"program exit!", __LINE__);
g_continue_flag = false;
storage_func_destroy();
log_destroy();
return result;
}
scheduleArray.entries = scheduleEntries;
memset(scheduleEntries, 0, sizeof(scheduleEntries));
scheduleEntries[0].id = 1;
scheduleEntries[0].time_base.hour = TIME_NONE;
scheduleEntries[0].time_base.minute = TIME_NONE;
scheduleEntries[0].interval = g_sync_log_buff_interval;
scheduleEntries[0].task_func = log_sync_func;
scheduleEntries[0].func_args = &g_log_context;
scheduleEntries[1].id = 2;
scheduleEntries[1].time_base.hour = TIME_NONE;
scheduleEntries[1].time_base.minute = TIME_NONE;
scheduleEntries[1].interval = g_sync_binlog_buff_interval;
scheduleEntries[1].task_func = fdfs_binlog_sync_func;
scheduleEntries[1].func_args = NULL;
scheduleEntries[2].id = 3;
scheduleEntries[2].time_base.hour = TIME_NONE;
scheduleEntries[2].time_base.minute = TIME_NONE;
scheduleEntries[2].interval = g_sync_stat_file_interval;
scheduleEntries[2].task_func = fdfs_stat_file_sync_func;
scheduleEntries[2].func_args = NULL;
scheduleArray.count = 3;
if (g_if_use_trunk_file)
{
scheduleEntries[scheduleArray.count].id = 4;
scheduleEntries[scheduleArray.count].time_base.hour = TIME_NONE;
scheduleEntries[scheduleArray.count].time_base.minute=TIME_NONE;
scheduleEntries[scheduleArray.count].interval = 1;
scheduleEntries[scheduleArray.count].task_func = \
trunk_binlog_sync_func;
scheduleEntries[scheduleArray.count].func_args = NULL;
scheduleArray.count++;
}
if (g_use_access_log)
{
scheduleEntries[scheduleArray.count].id = 5;
scheduleEntries[scheduleArray.count].time_base.hour = TIME_NONE;
scheduleEntries[scheduleArray.count].time_base.minute=TIME_NONE;
scheduleEntries[scheduleArray.count].interval = \
g_sync_log_buff_interval;
scheduleEntries[scheduleArray.count].task_func = log_sync_func;
scheduleEntries[scheduleArray.count].func_args = \
&g_access_log_context;
scheduleArray.count++;
if (g_rotate_access_log)
{
scheduleEntries[scheduleArray.count].id = 6;
scheduleEntries[scheduleArray.count].time_base = \
g_access_log_rotate_time;
scheduleEntries[scheduleArray.count].interval = \
24 * 3600;
scheduleEntries[scheduleArray.count].task_func = \
log_notify_rotate;
scheduleEntries[scheduleArray.count].func_args = \
&g_access_log_context;
scheduleArray.count++;
}
}
if (g_rotate_error_log)
{
scheduleEntries[scheduleArray.count].id = 7;
scheduleEntries[scheduleArray.count].time_base = \
g_error_log_rotate_time;
scheduleEntries[scheduleArray.count].interval = \
24 * 3600;
scheduleEntries[scheduleArray.count].task_func = \
log_notify_rotate;
scheduleEntries[scheduleArray.count].func_args = \
&g_log_context;
scheduleArray.count++;
}
if ((result=sched_start(&scheduleArray, &schedule_tid, \
g_thread_stack_size, (bool * volatile)&g_continue_flag)) != 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
if ((result=set_run_by(g_run_by_group, g_run_by_user)) != 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
if ((result=storage_dio_init()) != 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
log_set_cache(true);
bTerminateFlag = false;
bAcceptEndFlag = false;
storage_accept_loop(sock);
bAcceptEndFlag = true;
fdfs_binlog_sync_func(NULL); //binlog fsync
if (g_schedule_flag)
{
pthread_kill(schedule_tid, SIGINT);
}
storage_terminate_threads();
storage_dio_terminate();
kill_tracker_report_threads();
kill_storage_sync_threads();
wait_count = 0;
while (g_storage_thread_count != 0 || \
g_dio_thread_count != 0 || \
g_tracker_reporter_count > 0 || \
g_schedule_flag)
{
/*
#if defined(DEBUG_FLAG) && defined(OS_LINUX)
if (bSegmentFault)
{
sleep(5);
break;
}
#endif
*/
usleep(10000);
if (++wait_count > 6000)
{
logWarning("waiting timeout, exit!");
break;
}
}
tracker_report_destroy();
storage_service_destroy();
storage_sync_destroy();
storage_func_destroy();
if (g_if_use_trunk_file)
{
trunk_sync_destroy();
storage_trunk_destroy();
}
logInfo("exit normally.\n");
log_destroy();
delete_pid_file(pidFilename);
return 0;
}
int main(int argc, char *argv[])
{
char *conf_filename;
int result;
int wait_count;
int sock;
pthread_t schedule_tid;
struct sigaction act;
ScheduleEntry scheduleEntries[SCHEDULE_ENTRIES_COUNT];
ScheduleArray scheduleArray;
char pidFilename[MAX_PATH_SIZE];
bool stop;
if (argc < 2)
{
usage(argv[0]);
return 1;
}
g_current_time = time(NULL);
g_up_time = g_current_time;
srand(g_up_time);
log_init2();
//通过指定的conf文件，获取base path
conf_filename = argv[1];
if ((result=get_base_path_from_conf_file(conf_filename,
g_fdfs_base_path, sizeof(g_fdfs_base_path))) != 0)
{
log_destroy();
return result;
}
//启动程序，或者通过文件中的pid来kill掉之前的进程
snprintf(pidFilename, sizeof(pidFilename),
"%s/data/fdfs_trackerd.pid", g_fdfs_base_path);
if ((result=process_action(pidFilename, argv[2], &stop)) != 0)
{
if (result == EINVAL)
{
usage(argv[0]);
}
log_destroy();
return result;
}
if (stop)
{
log_destroy();
return 0;
}
#if defined(DEBUG_FLAG) && defined(OS_LINUX)
if (getExeAbsoluteFilename(argv[0], g_exe_name, \
sizeof(g_exe_name)) == NULL)
{
logCrit("exit abnormally!\n");
log_destroy();
return errno != 0 ? errno : ENOENT;
}
#endif
memset(bind_addr, 0, sizeof(bind_addr));
if ((result=tracker_load_from_conf_file(conf_filename, \
bind_addr, sizeof(bind_addr))) != 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
//g_tracker_last_status只记录了uptime和last check time作用未知
if ((result=tracker_load_status_from_file(&g_tracker_last_status)) != 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
base64_init_ex(&g_base64_context, 0, '-', '_', '.');
if ((result=set_rand_seed()) != 0)
{
logCrit("file: "__FILE__", line: %d, " \
"set_rand_seed fail, program exit!", __LINE__);
return result;
}
//内存分配及历史group和storage载入
if ((result=tracker_mem_init()) != 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
sock = socketServer(bind_addr, g_server_port, &result);
if (sock < 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
if ((result=tcpsetserveropt(sock, g_fdfs_network_timeout)) != 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
//后台运行
daemon_init(false);
umask(0);
//将pid记录到文件中
if ((result=write_to_pid_file(pidFilename)) != 0)
{
log_destroy();
return result;
}
//启动工作线程，这一块需要重点看
if ((result=tracker_service_init()) != 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
//注册信号处理函数
memset(&act, 0, sizeof(act));
sigemptyset(&act.sa_mask);
act.sa_handler = sigUsrHandler;
if(sigaction(SIGUSR1, &act, NULL) < 0 || \
sigaction(SIGUSR2, &act, NULL) < 0)
{
logCrit("file: "__FILE__", line: %d, " \
"call sigaction fail, errno: %d, error info: %s", \
__LINE__, errno, STRERROR(errno));
logCrit("exit abnormally!\n");
return errno;
}
act.sa_handler = sigHupHandler;
if(sigaction(SIGHUP, &act, NULL) < 0)
{
logCrit("file: "__FILE__", line: %d, " \
"call sigaction fail, errno: %d, error info: %s", \
__LINE__, errno, STRERROR(errno));
logCrit("exit abnormally!\n");
return errno;
}
act.sa_handler = SIG_IGN;
if(sigaction(SIGPIPE, &act, NULL) < 0)
{
logCrit("file: "__FILE__", line: %d, " \
"call sigaction fail, errno: %d, error info: %s", \
__LINE__, errno, STRERROR(errno));
logCrit("exit abnormally!\n");
return errno;
}
act.sa_handler = sigQuitHandler;
if(sigaction(SIGINT, &act, NULL) < 0 || \
sigaction(SIGTERM, &act, NULL) < 0 || \
sigaction(SIGQUIT, &act, NULL) < 0)
{
logCrit("file: "__FILE__", line: %d, " \
"call sigaction fail, errno: %d, error info: %s", \
__LINE__, errno, STRERROR(errno));
logCrit("exit abnormally!\n");
return errno;
}
#if defined(DEBUG_FLAG)
/*
#if defined(OS_LINUX)
memset(&act, 0, sizeof(act));
sigemptyset(&act.sa_mask);
act.sa_sigaction = sigSegvHandler;
act.sa_flags = SA_SIGINFO;
if (sigaction(SIGSEGV, &act, NULL) < 0 || \
sigaction(SIGABRT, &act, NULL) < 0)
{
logCrit("file: "__FILE__", line: %d, " \
"call sigaction fail, errno: %d, error info: %s", \
__LINE__, errno, STRERROR(errno));
logCrit("exit abnormally!\n");
return errno;
}
#endif
*/
memset(&act, 0, sizeof(act));
sigemptyset(&act.sa_mask);
act.sa_handler = sigDumpHandler;
if(sigaction(SIGUSR1, &act, NULL) < 0 || \
sigaction(SIGUSR2, &act, NULL) < 0)
{
logCrit("file: "__FILE__", line: %d, " \
"call sigaction fail, errno: %d, error info: %s", \
__LINE__, errno, STRERROR(errno));
logCrit("exit abnormally!\n");
return errno;
}
#endif
#ifdef WITH_HTTPD
if (!g_http_params.disabled)
{
if ((result=tracker_httpd_start(bind_addr)) != 0)
{
logCrit("file: "__FILE__", line: %d, " \
"tracker_httpd_start fail, program exit!", \
__LINE__);
return result;
}
}
if ((result=tracker_http_check_start()) != 0)
{
logCrit("file: "__FILE__", line: %d, " \
"tracker_http_check_start fail, " \
"program exit!", __LINE__);
return result;
}
#endif
if ((result=set_run_by(g_run_by_group, g_run_by_user)) != 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
//schedule 调度线程，主要作用待细看
scheduleArray.entries = scheduleEntries;
scheduleArray.count = 0;
memset(scheduleEntries, 0, sizeof(scheduleEntries));
//日志处理，日志是先存在cache中的，需要定时存储
INIT_SCHEDULE_ENTRY(scheduleEntries[scheduleArray.count],
scheduleArray.count + 1, TIME_NONE, TIME_NONE, TIME_NONE,
g_sync_log_buff_interval, log_sync_func, &g_log_context);
scheduleArray.count++;
//用户检测trunk server服务器是否可用(trunk server是选定的一个storage)
INIT_SCHEDULE_ENTRY(scheduleEntries[scheduleArray.count],
scheduleArray.count + 1, TIME_NONE, TIME_NONE, TIME_NONE,
g_check_active_interval, tracker_mem_check_alive, NULL);
scheduleArray.count++;
//每5分钟刷新一下status
INIT_SCHEDULE_ENTRY(scheduleEntries[scheduleArray.count],
scheduleArray.count + 1, 0, 0, 0,
TRACKER_SYNC_STATUS_FILE_INTERVAL,
tracker_write_status_to_file, NULL);
scheduleArray.count++;
if (g_rotate_error_log)
{
INIT_SCHEDULE_ENTRY_EX(scheduleEntries[scheduleArray.count],
scheduleArray.count + 1, g_error_log_rotate_time,
24 * 3600, log_notify_rotate, &g_log_context);
scheduleArray.count++;
if (g_log_file_keep_days > 0)
{
log_set_keep_days(&g_log_context, g_log_file_keep_days);
INIT_SCHEDULE_ENTRY(scheduleEntries[scheduleArray.count],
scheduleArray.count + 1, 1, 0, 0, 24 * 3600,
log_delete_old_files, &g_log_context);
scheduleArray.count++;
}
}
if ((result=sched_start(&scheduleArray, &schedule_tid, \
g_thread_stack_size, (bool * volatile)&g_continue_flag)) != 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
//选主机制，tracker默认不会把自己加入队列
if ((result=tracker_relationship_init()) != 0)
{
logCrit("exit abnormally!\n");
log_destroy();
return result;
}
log_set_cache(true);
bTerminateFlag = false;
bAcceptEndFlag = false;
//accept线程，工作线程和消息接收线程是分开的
tracker_accept_loop(sock);
bAcceptEndFlag = true;
if (g_schedule_flag)
{
pthread_kill(schedule_tid, SIGINT);
}
tracker_terminate_threads();
#ifdef WITH_HTTPD
if (g_http_check_flag)
{
tracker_http_check_stop();
}
while (g_http_check_flag)
{
usleep(50000);
}
#endif
wait_count = 0;
//线程数和调度flag还在，则继续运行程序
while ((g_tracker_thread_count != 0) || g_schedule_flag)
{
/*
#if defined(DEBUG_FLAG) && defined(OS_LINUX)
if (bSegmentFault)
{
sleep(5);
break;
}
#endif
*/
usleep(10000);
if (++wait_count > 3000)
{
logWarning("waiting timeout, exit!");
break;
}
}
tracker_mem_destroy();
tracker_service_destroy();
tracker_relationship_destroy();
logInfo("exit normally.\n");
log_destroy();
delete_pid_file(pidFilename);
return 0;
}
