diff options
Diffstat (limited to 'server-tools/instance-manager/manager.cc')
-rw-r--r-- | server-tools/instance-manager/manager.cc | 114 |
1 files changed, 75 insertions, 39 deletions
diff --git a/server-tools/instance-manager/manager.cc b/server-tools/instance-manager/manager.cc index 2bb887716b0..09d30e1312f 100644 --- a/server-tools/instance-manager/manager.cc +++ b/server-tools/instance-manager/manager.cc @@ -30,7 +30,9 @@ #include <m_string.h> #include <signal.h> #include <thr_alarm.h> +#ifndef __WIN__ #include <sys/wait.h> +#endif static int create_pid_file(const char *pid_file_name) @@ -50,6 +52,60 @@ static int create_pid_file(const char *pid_file_name) return 0; } +#ifndef __WIN__ +void set_signals(sigset_t *mask) +{ + /* block signals */ + sigemptyset(mask); + sigaddset(mask, SIGINT); + sigaddset(mask, SIGTERM); + sigaddset(mask, SIGPIPE); + sigaddset(mask, SIGHUP); + signal(SIGPIPE, SIG_IGN); + + /* + We want this signal to be blocked in all theads but the signal + one. It is needed for the thr_alarm subsystem to work. + */ + sigaddset(mask,THR_SERVER_ALARM); + + /* all new threads will inherite this signal mask */ + pthread_sigmask(SIG_BLOCK, mask, NULL); + + /* + In our case the signal thread also implements functions of alarm thread. + Here we init alarm thread functionality. We suppose that we won't have + more then 10 alarms at the same time. + */ + init_thr_alarm(10); +} +#else + +bool have_signal; + +void onsignal(int signo) +{ + have_signal= true; +} + +void set_signals(sigset_t *set) +{ + signal(SIGINT, onsignal); + signal(SIGTERM, onsignal); + have_signal= false; +} + +int my_sigwait(const sigset_t *set, int *sig) +{ + while (!have_signal) + { + Sleep(100); + } + return 0; +} + +#endif + /* manager - entry point to the main instance manager process: start @@ -98,21 +154,8 @@ void manager(const Options &options) if (create_pid_file(options.pid_file_name)) return; - /* block signals */ sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, SIGINT); - sigaddset(&mask, SIGTERM); - sigaddset(&mask, SIGPIPE); - sigaddset(&mask, SIGHUP); - /* - We want this signal to be blocked in all theads but the signal - one. It is needed for the thr_alarm subsystem to work. - */ - sigaddset(&mask,THR_SERVER_ALARM); - - /* all new threads will inherite this signal mask */ - pthread_sigmask(SIG_BLOCK, &mask, NULL); + set_signals(&mask); /* create the listener */ { @@ -166,12 +209,7 @@ void manager(const Options &options) bool shutdown_complete; shutdown_complete= FALSE; - /* - In our case the signal thread also implements functions of alarm thread. - Here we init alarm thread functionality. We suppose that we won't have - more then 10 alarms at the same time. - */ - init_thr_alarm(10); + /* init list of guarded instances */ guardian_thread.lock(); @@ -185,8 +223,6 @@ void manager(const Options &options) */ pthread_cond_signal(&guardian_thread.COND_guardian); - signal(SIGPIPE, SIG_IGN); - while (!shutdown_complete) { int status= 0; @@ -197,25 +233,23 @@ void manager(const Options &options) goto err; } - switch (signo) { - case THR_SERVER_ALARM: - process_alarm(signo); - break; - default: +#ifndef __WIN__ + if (THR_SERVER_ALARM == signo) + process_alarm(signo); + else +#endif + { + if (!guardian_thread.is_stopped()) + { + bool stop_instances= true; + guardian_thread.request_shutdown(stop_instances); + pthread_cond_signal(&guardian_thread.COND_guardian); + } + else { - if (!guardian_thread.is_stopped()) - { - bool stop_instances= true; - guardian_thread.request_shutdown(stop_instances); - pthread_cond_signal(&guardian_thread.COND_guardian); - } - else - { - thread_registry.deliver_shutdown(); - shutdown_complete= TRUE; - } + thread_registry.deliver_shutdown(); + shutdown_complete= TRUE; } - break; } } @@ -223,8 +257,10 @@ err: /* delete the pid file */ my_delete(options.pid_file_name, MYF(0)); +#ifndef __WIN__ /* free alarm structures */ end_thr_alarm(1); /* don't pthread_exit to kill all threads who did not shut down in time */ +#endif } |