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Commit db8a7b51 authored by svoj@mysql.com/april.(none)'s avatar svoj@mysql.com/april.(none)
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Excluded wrongly merged changeset.

parent 4a6770e0
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Showing with 45 additions and 82 deletions
include/my_pthread.h
View file @ db8a7b51
......@@ -690,15 +690,6 @@ extern uint my_thread_end_wait_time;
Keep track of shutdown,signal, and main threads so that my_end() will not
report errors with them
*/
/* Which kind of thread library is in use */
#define THD_LIB_OTHER 1
#define THD_LIB_NPTL 2
#define THD_LIB_LT 4
extern uint thd_lib_detected;
/* statistics_xxx functions are for not essential statistic */
#ifndef thread_safe_increment
......
include/thr_alarm.h
View file @ db8a7b51
......@@ -24,6 +24,11 @@ extern "C" {
#ifndef USE_ALARM_THREAD
#define USE_ONE_SIGNAL_HAND /* One must call process_alarm */
#endif
#ifdef HAVE_LINUXTHREADS
#define THR_CLIENT_ALARM SIGALRM
#else
#define THR_CLIENT_ALARM SIGUSR1
#endif
#ifdef HAVE_rts_threads
#undef USE_ONE_SIGNAL_HAND
#define USE_ALARM_THREAD
......@@ -84,9 +89,6 @@ typedef struct st_alarm {
my_bool malloced;
} ALARM;
extern uint thr_client_alarm;
extern pthread_t alarm_thread;
#define thr_alarm_init(A) (*(A))=0
#define thr_alarm_in_use(A) (*(A)!= 0)
void init_thr_alarm(uint max_alarm);
......
mysys/my_pthread.c
View file @ db8a7b51
......@@ -29,8 +29,6 @@
#define SCHED_POLICY SCHED_OTHER
#endif
uint thd_lib_detected;
#ifndef my_pthread_setprio
void my_pthread_setprio(pthread_t thread_id,int prior)
{
......@@ -314,6 +312,8 @@ void sigwait_handle_sig(int sig)
pthread_mutex_unlock(&LOCK_sigwait);
}
extern pthread_t alarm_thread;
void *sigwait_thread(void *set_arg)
{
sigset_t *set=(sigset_t*) set_arg;
......@@ -332,9 +332,7 @@ void *sigwait_thread(void *set_arg)
sigaction(i, &sact, (struct sigaction*) 0);
}
}
/* Ensure that init_thr_alarm() is called */
DBUG_ASSERT(thr_client_alarm);
sigaddset(set, thr_client_alarm);
sigaddset(set,THR_CLIENT_ALARM);
pthread_sigmask(SIG_UNBLOCK,(sigset_t*) set,(sigset_t*) 0);
alarm_thread=pthread_self(); /* For thr_alarm */
......
mysys/my_thr_init.c
View file @ db8a7b51
......@@ -20,7 +20,6 @@
#include "mysys_priv.h"
#include <m_string.h>
#include <signal.h>
#ifdef THREAD
#ifdef USE_TLS
......@@ -64,8 +63,6 @@ pthread_handler_t nptl_pthread_exit_hack_handler(void *arg)
#endif
static uint get_thread_lib(void);
/*
initialize thread environment
......@@ -79,8 +76,6 @@ static uint get_thread_lib(void);
my_bool my_thread_global_init(void)
{
thd_lib_detected= get_thread_lib();
if (pthread_key_create(&THR_KEY_mysys,0))
{
fprintf(stderr,"Can't initialize threads: error %d\n",errno);
......@@ -397,20 +392,4 @@ const char *my_thread_name(void)
}
#endif /* DBUG_OFF */
static uint get_thread_lib(void)
{
char buff[64];
#ifdef _CS_GNU_LIBPTHREAD_VERSION
confstr(_CS_GNU_LIBPTHREAD_VERSION, buff, sizeof(buff));
if (!strncasecmp(buff, "NPTL", 4))
return THD_LIB_NPTL;
if (!strncasecmp(buff, "linuxthreads", 12))
return THD_LIB_LT;
#endif
return THD_LIB_OTHER;
}
#endif /* THREAD */
mysys/thr_alarm.c
View file @ db8a7b51
......@@ -34,7 +34,6 @@
#define ETIME ETIMEDOUT
#endif
uint thr_client_alarm;
static int alarm_aborted=1; /* No alarm thread */
my_bool thr_alarm_inited= 0;
volatile my_bool alarm_thread_running= 0;
......@@ -57,7 +56,9 @@ static void *alarm_handler(void *arg);
#define reschedule_alarms() pthread_kill(alarm_thread,THR_SERVER_ALARM)
#endif
#if THR_CLIENT_ALARM != SIGALRM || defined(USE_ALARM_THREAD)
static sig_handler thread_alarm(int sig __attribute__((unused)));
#endif
static int compare_ulong(void *not_used __attribute__((unused)),
byte *a_ptr,byte* b_ptr)
......@@ -76,16 +77,9 @@ void init_thr_alarm(uint max_alarms)
sigfillset(&full_signal_set); /* Neaded to block signals */
pthread_mutex_init(&LOCK_alarm,MY_MUTEX_INIT_FAST);
pthread_cond_init(&COND_alarm,NULL);
if (thd_lib_detected == THD_LIB_LT)
thr_client_alarm= SIGALRM;
else
thr_client_alarm= SIGUSR1;
#ifndef USE_ALARM_THREAD
if (thd_lib_detected != THD_LIB_LT)
#if THR_CLIENT_ALARM != SIGALRM || defined(USE_ALARM_THREAD)
my_sigset(THR_CLIENT_ALARM,thread_alarm);
#endif
{
my_sigset(thr_client_alarm, thread_alarm);
}
sigemptyset(&s);
sigaddset(&s, THR_SERVER_ALARM);
alarm_thread=pthread_self();
......@@ -103,11 +97,10 @@ void init_thr_alarm(uint max_alarms)
}
#elif defined(USE_ONE_SIGNAL_HAND)
pthread_sigmask(SIG_BLOCK, &s, NULL); /* used with sigwait() */
if (thd_lib_detected == THD_LIB_LT)
{
my_sigset(thr_client_alarm, process_alarm); /* Linuxthreads */
#if THR_SERVER_ALARM == THR_CLIENT_ALARM
my_sigset(THR_CLIENT_ALARM,process_alarm); /* Linuxthreads */
pthread_sigmask(SIG_UNBLOCK, &s, NULL);
}
#endif
#else
my_sigset(THR_SERVER_ALARM, process_alarm);
pthread_sigmask(SIG_UNBLOCK, &s, NULL);
......@@ -278,17 +271,18 @@ sig_handler process_alarm(int sig __attribute__((unused)))
This must be first as we can't call DBUG inside an alarm for a normal thread
*/
if (thd_lib_detected == THD_LIB_LT &&
!pthread_equal(pthread_self(),alarm_thread))
#if THR_SERVER_ALARM == THR_CLIENT_ALARM
if (!pthread_equal(pthread_self(),alarm_thread))
{
#if defined(MAIN) && !defined(__bsdi__)
printf("thread_alarm in process_alarm\n"); fflush(stdout);
#endif
#ifdef DONT_REMEMBER_SIGNAL
my_sigset(thr_client_alarm, process_alarm); /* int. thread system calls */
my_sigset(THR_CLIENT_ALARM,process_alarm); /* int. thread system calls */
#endif
return;
}
#endif
/*
We have to do do the handling of the alarm in a sub function,
......@@ -332,7 +326,7 @@ static sig_handler process_alarm_part2(int sig __attribute__((unused)))
alarm_data=(ALARM*) queue_element(&alarm_queue,i);
alarm_data->alarmed=1; /* Info to thread */
if (pthread_equal(alarm_data->thread,alarm_thread) ||
pthread_kill(alarm_data->thread, thr_client_alarm))
pthread_kill(alarm_data->thread, THR_CLIENT_ALARM))
{
#ifdef MAIN
printf("Warning: pthread_kill couldn't find thread!!!\n");
......@@ -356,7 +350,7 @@ static sig_handler process_alarm_part2(int sig __attribute__((unused)))
alarm_data->alarmed=1; /* Info to thread */
DBUG_PRINT("info",("sending signal to waiting thread"));
if (pthread_equal(alarm_data->thread,alarm_thread) ||
pthread_kill(alarm_data->thread, thr_client_alarm))
pthread_kill(alarm_data->thread, THR_CLIENT_ALARM))
{
#ifdef MAIN
printf("Warning: pthread_kill couldn't find thread!!!\n");
......@@ -493,7 +487,7 @@ void thr_alarm_info(ALARM_INFO *info)
ARGSUSED
*/
#if THR_CLIENT_ALARM != SIGALRM || defined(USE_ALARM_THREAD)
static sig_handler thread_alarm(int sig)
{
#ifdef MAIN
......@@ -503,6 +497,7 @@ static sig_handler thread_alarm(int sig)
my_sigset(sig,thread_alarm); /* int. thread system calls */
#endif
}
#endif
#ifdef HAVE_TIMESPEC_TS_SEC
......@@ -788,7 +783,9 @@ static void *signal_hand(void *arg __attribute__((unused)))
sigaddset(&set,SIGINT);
sigaddset(&set,SIGQUIT);
sigaddset(&set,SIGTERM);
#if THR_CLIENT_ALARM != SIGHUP
sigaddset(&set,SIGHUP);
#endif
#ifdef SIGTSTP
sigaddset(&set,SIGTSTP);
#endif
......@@ -799,7 +796,7 @@ static void *signal_hand(void *arg __attribute__((unused)))
puts("Starting signal handling thread");
#endif
printf("server alarm: %d thread alarm: %d\n",
THR_SERVER_ALARM, thr_client_alarm);
THR_SERVER_ALARM,THR_CLIENT_ALARM);
DBUG_PRINT("info",("Starting signal and alarm handling thread"));
for(;;)
{
......@@ -867,11 +864,11 @@ int main(int argc __attribute__((unused)),char **argv __attribute__((unused)))
sigaddset(&set,SIGTSTP);
#endif
sigaddset(&set,THR_SERVER_ALARM);
sigdelset(&set, thr_client_alarm);
sigdelset(&set,THR_CLIENT_ALARM);
(void) pthread_sigmask(SIG_SETMASK,&set,NULL);
#ifdef NOT_USED
sigemptyset(&set);
sigaddset(&set, thr_client_alarm);
sigaddset(&set,THR_CLIENT_ALARM);
VOID(pthread_sigmask(SIG_UNBLOCK, &set, (sigset_t*) 0));
#endif
......
sql/mysqld.cc
View file @ db8a7b51
......@@ -199,6 +199,12 @@ inline void reset_floating_point_exceptions()
} /* cplusplus */
#if defined(HAVE_LINUXTHREADS)
#define THR_KILL_SIGNAL SIGINT
#else
#define THR_KILL_SIGNAL SIGUSR2 // Can't use this with LinuxThreads
#endif
#define MYSQL_KILL_SIGNAL SIGTERM
#ifdef HAVE_GLIBC2_STYLE_GETHOSTBYNAME_R
......@@ -587,7 +593,6 @@ pthread_mutex_t LOCK_server_started;
pthread_cond_t COND_server_started;
int mysqld_server_started= 0;
static uint thr_kill_signal;
File_parser_dummy_hook file_parser_dummy_hook;
......@@ -769,7 +774,7 @@ static void close_connections(void)
DBUG_PRINT("info",("Waiting for select thread"));
#ifndef DONT_USE_THR_ALARM
if (pthread_kill(select_thread, thr_client_alarm))
if (pthread_kill(select_thread,THR_CLIENT_ALARM))
break; // allready dead
#endif
set_timespec(abstime, 2);
......@@ -2206,9 +2211,7 @@ static void init_signals(void)
DBUG_ENTER("init_signals");
if (test_flags & TEST_SIGINT)
{
my_sigset(thr_kill_signal, end_thread_signal);
}
my_sigset(THR_KILL_SIGNAL,end_thread_signal);
my_sigset(THR_SERVER_ALARM,print_signal_warning); // Should never be called!
if (!(test_flags & TEST_NO_STACKTRACE) || (test_flags & TEST_CORE_ON_SIGNAL))
......@@ -2265,12 +2268,8 @@ static void init_signals(void)
#endif
sigaddset(&set,THR_SERVER_ALARM);
if (test_flags & TEST_SIGINT)
{
// May be SIGINT
sigdelset(&set, thr_kill_signal);
}
// For alarms
sigdelset(&set, thr_client_alarm);
sigdelset(&set,THR_KILL_SIGNAL); // May be SIGINT
sigdelset(&set,THR_CLIENT_ALARM); // For alarms
sigprocmask(SIG_SETMASK,&set,NULL);
pthread_sigmask(SIG_SETMASK,&set,NULL);
DBUG_VOID_RETURN;
......@@ -2333,19 +2332,23 @@ pthread_handler_t signal_hand(void *arg __attribute__((unused)))
*/
init_thr_alarm(max_connections +
global_system_variables.max_insert_delayed_threads + 10);
if (thd_lib_detected != THD_LIB_LT && (test_flags & TEST_SIGINT))
#if SIGINT != THR_KILL_SIGNAL
if (test_flags & TEST_SIGINT)
{
(void) sigemptyset(&set); // Setup up SIGINT for debug
(void) sigaddset(&set,SIGINT); // For debugging
(void) pthread_sigmask(SIG_UNBLOCK,&set,NULL);
}
#endif
(void) sigemptyset(&set); // Setup up SIGINT for debug
#ifdef USE_ONE_SIGNAL_HAND
(void) sigaddset(&set,THR_SERVER_ALARM); // For alarms
#endif
#ifndef IGNORE_SIGHUP_SIGQUIT
(void) sigaddset(&set,SIGQUIT);
#if THR_CLIENT_ALARM != SIGHUP
(void) sigaddset(&set,SIGHUP);
#endif
#endif
(void) sigaddset(&set,SIGTERM);
(void) sigaddset(&set,SIGTSTP);
......@@ -3508,13 +3511,6 @@ int main(int argc, char **argv)
MY_INIT(argv[0]); // init my_sys library & pthreads
/* nothing should come before this line ^^^ */
/* Set signal used to kill MySQL */
#if defined(SIGUSR2)
thr_kill_signal= thd_lib_detected == THD_LIB_LT ? SIGINT : SIGUSR2;
#else
thr_kill_signal= SIGINT;
#endif
/*
Perform basic logger initialization logger. Should be called after
MY_INIT, as it initializes mutexes. Log tables are inited later.
......
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