int
main(int argc, char *argv[])
{
struct sigevent sev;
mqd_t mqd;
struct mq_attr attr;
void *buffer;
ssize_t numRead;
sigset_t blockMask, emptyMask;
struct sigaction sa;
if (argc != 2 || strcmp(argv[1], "--help") == 0)
usageErr("%s mq-name\n", argv[0]);
mqd = mq_open(argv[1], O_RDONLY | O_NONBLOCK);
if (mqd == (mqd_t) -1)
errExit("mq_open");
if (mq_getattr(mqd, &attr) == -1)
errExit("mq_getattr");
buffer = malloc(attr.mq_msgsize);
if (buffer == NULL)
errExit("malloc");
sigemptyset(&blockMask);
sigaddset(&blockMask, NOTIFY_SIG);
if (sigprocmask(SIG_BLOCK, &blockMask, NULL) == -1)
errExit("sigprocmask");
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
sa.sa_handler = handler;
if (sigaction(NOTIFY_SIG, &sa, NULL) == -1)
errExit("sigaction");
sev.sigev_notify = SIGEV_SIGNAL;
sev.sigev_signo = NOTIFY_SIG;
if (mq_notify(mqd, &sev) == -1)
errExit("mq_notify");
sigemptyset(&emptyMask);
for (;;) {
sigsuspend(&emptyMask); /* Wait for notification signal */
if (mq_notify(mqd, &sev) == -1)
errExit("mq_notify");
while ((numRead = mq_receive(mqd, buffer, attr.mq_msgsize, NULL)) >= 0)
printf("Read %ld bytes\n", (long) numRead);
if (errno != EAGAIN) /* Unexpected error */
errExit("mq_receive");
}
}
int main()
{
char mqname[NAMESIZE];
mqd_t mqdes;
struct sigevent notification;
int pid;
int status;
sprintf(mqname, "/" FUNCTION "_" TEST "_%d", getpid());
mqdes = mq_open(mqname, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR, 0);
if (mqdes == (mqd_t)-1) {
perror(ERROR_PREFIX "mq_open");
return PTS_UNRESOLVED;
}
notification.sigev_notify = SIGEV_SIGNAL;
notification.sigev_signo = SIGUSR1;
if (mq_notify(mqdes, ¬ification) != 0) {
printf("Test FAILED \n");
mqclean(mqdes, mqname);
return PTS_FAIL;
}
pid = fork();
if (pid == -1) {
perror(ERROR_PREFIX "fork");
mqclean(mqdes, mqname);
return PTS_UNRESOLVED;
}
if (pid == 0) {
//child process
if (mq_notify(mqdes, ¬ification) == -1) {
if (EBUSY == errno) {
printf("Test PASSED \n");
return PTS_PASS;
}
else {
printf("errno != EBUSY \n");
printf("Test FAILED \n");
return PTS_FAIL;
}
}
else {
printf("Test FAILED \n");
return PTS_FAIL;
}
}
else {
//parent process
wait(&status);
mqclean(mqdes, mqname);
return status;
}
}
static void my_mq_notify(mqd_t des, struct sigevent *not)
{
int rv = mq_notify(des, not);
if (rv < 0) {
if (errno == ENOMEM) {
rb_gc();
rv = mq_notify(des, not);
}
if (rv < 0)
rb_sys_fail("mq_notify");
}
}
int main()
{
char mqname[NAMESIZE];
mqd_t mqdes;
const char s_msg_ptr[MSG_SIZE] = "test message \n";
struct sigevent notification;
struct sigaction sa;
unsigned int prio = 1;
sprintf(mqname, "/" FUNCTION "_" TEST "_%d", getpid());
mqdes = mq_open(mqname, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR, 0);
if (mqdes == (mqd_t)-1) {
perror(ERROR_PREFIX "mq_open");
return PTS_UNRESOLVED;
}
notification.sigev_notify = SIGEV_SIGNAL;
notification.sigev_signo = SIGUSR1;
sa.sa_handler = msg_handler;
sa.sa_flags = 0;
sigaction(SIGUSR1, &sa, NULL);
if (mq_notify(mqdes, ¬ification) != 0) {
perror(ERROR_PREFIX "mq_notify");
mqclean(mqdes, mqname);
return PTS_UNRESOLVED;
}
if (mq_notify(mqdes, NULL) != 0 ) {
printf("Test FAILED \n");
mqclean(mqdes, mqname);
return PTS_FAIL;
}
if (mq_send(mqdes, s_msg_ptr, MSG_SIZE, prio) == -1) {
perror(ERROR_PREFIX "mq_send");
mqclean(mqdes, mqname);
return PTS_UNRESOLVED;
}
sleep(1);
if (mq_unlink(mqname) != 0) {
perror(ERROR_PREFIX "mq_unlink");
return PTS_UNRESOLVED;
}
if (!enter_handler) {
printf("Test PASSED \n");
mqclean(mqdes, mqname);
return PTS_PASS;
}
else {
printf("Test FAILED \n");
mqclean(mqdes, mqname);
return PTS_FAIL;
}
}
int privateMessageQueueNotificationBySignal(const MessageQueue* messageQueue,
const struct sigevent* sevp)
{
if (mq_notify(messageQueue->mq_des, sevp) == -1)
{
perror("\n\rmq_notify failed !!!\n");
switch(errno)
{
case EBADF:
perror("The descriptor specified in mqdes is invalid.\n");
break;
case EBUSY:
perror("Another process has already registered to receive notification for this message queue.\n");
break;
case EINVAL:
perror("sevp->sigev_notify is not one of the permitted values; or sevp->sigev_notify is SIGEV_SIGNAL and sevp->sigev_signo is not a valid signal number.\n");
break;
case ENOMEM:
perror("Insufficient memory.\n");
break;
default :
perror("Unknown error\n");
break;
}
return -1;
}
return 0;
}
int main(void)
{
mqd_t mqdes;
struct sigevent sig;
mq_notify(mqdes, &sig);
return 0;
}
void * th_Robot_alimentation()
{
printf("Robot alimentation : start\n");
//struct sigaction act;
//memset (&act, '\0', sizeof(act));
/* Use the sa_sigaction field because the handles has two additional parameters */
//act.sa_sigaction = &receive_sig;
/* the SA_SIGINFO flag tells sigaction() to use the sa_sigaction field, not sa_handler. */
//act.sa_flags = SA_SIGINFO;
//if (sigaction(SIGUSR1, &act, NULL) < 0)
// erreur("sigaction robot alim", 1);
//mqd_t mqdes;
struct sigevent not;
not.sigev_notify = SIGEV_THREAD;
not.sigev_notify_function = receive_sig;
not.sigev_notify_attributes = NULL;
not.sigev_value.sival_ptr = &messageQueueRobotAl;
if (mq_notify(messageQueueRobotAl, ¬) == -1) {
perror("robot_al : mq_notify");
exit(EXIT_FAILURE);
}
while (1);
}
void prvPosixIPCInterruptHandler( int signal, siginfo_t * data, void * pvParam )
{
union sigval xParameters = data->si_value;
xPipeAndFunction *pxPipes = ( xPipeAndFunction *)xParameters.sival_ptr;
mqd_t hPipeHandle = 0;
void (*vMessageInterruptHandler)(xMessageObject,void*) = NULL;
xMessageObject xRxMessage;
portLONG lMessagesReceived = 0;
if ( NULL != pxPipes )
{
hPipeHandle = pxPipes->hPipe;
vMessageInterruptHandler = pxPipes->pvFunction;
memset( &xRxMessage, 0, sizeof( xMessageObject ) );
if ( NULL != vMessageInterruptHandler )
{
while ( ( pdTRUE == lPosixIPCReceiveMessage( hPipeHandle, &xRxMessage ) ) && ( lMessagesReceived++ < MAX_NUMBER_OF_MESSAGES ) )
{
vMessageInterruptHandler( xRxMessage, pxPipes->pvContext );
}
}
/* Re-register the notification. */
if ( 0 != mq_notify( hPipeHandle, &xMessageEvent ) )
{
printf( "Failed to install Rx interrupt handler: %d.\n", errno );
}
}
else
{
printf( "NULL parameter: Failed to install Rx interrupt handler: %d.\n", errno );
}
}
void test_mq_notify_prototype(void)
{
mqd_t mqdes;
struct sigevent *notification;
int err;
err = mq_notify(mqdes, notification);
}
static void NotifySetup(mqd_t *mqdp) {
struct sigevent sev;
sev.sigev_notify = SIGEV_THREAD; /* Notify via thread */
sev.sigev_notify_function = receive_cb;
sev.sigev_notify_attributes = NULL;
sev.sigev_value.sival_ptr = mqdp; /* Argument to threadFunc() */
if (mq_notify(*mqdp, &sev) == -1){
LOG_MESSG("%s", "mq_notify");
}
}
int
main(int argc, char **argv)
{
mqd_t mqd;
void *buff;
ssize_t n;
sigset_t zeromask, newmask, oldmask;
struct mq_attr attr;
struct sigevent sigev;
if (argc != 2)
err_quit("usage: mqnotifysig2 <name>");
/* 4open queue, get attributes, allocate read buffer */
mqd = mq_open(argv[1], O_RDONLY); // 打开message queue
mq_getattr(mqd, &attr); // 获得queue的属性
buff = malloc(attr.mq_msgsize); // 分配缓冲区
sigemptyset(&zeromask); /* no signals blocked */
sigemptyset(&newmask);
sigemptyset(&oldmask);
sigaddset(&newmask, SIGUSR1); // 增加SIGUSR1 到newmask中
/* 4establish signal handler, enable notification */
signal(SIGUSR1, sig_usr1); // 注册SIGUSR1的处理函数
sigev.sigev_notify = SIGEV_SIGNAL; // 当queue由空变成非空的时候，产生SIGUSR1信号
sigev.sigev_signo = SIGUSR1;
mq_notify(mqd, &sigev);
for ( ; ; ) {
sigprocmask(SIG_BLOCK, &newmask, &oldmask); /* block SIGUSR1 *///即不处理SIGUSR1信号
while (mqflag == 0) // 一直等待mqflag变成非0,否则，解除对SIGUSR1的阻塞，等待它到来。
sigsuspend(&zeromask); // 临时改变mask，当SIGUSR1的handler返回是，sigsuspend也返回
mqflag = 0; /* reset flag */ // 重新设置为0
mq_notify(mqd, &sigev); /* reregister first */
n = mq_receive(mqd, buff, attr.mq_msgsize, NULL);
printf("read %ld bytes\n", (long) n);
sigprocmask(SIG_UNBLOCK, &newmask, NULL); /* unblock SIGUSR1 */
}
exit(0);
}
int nx_eventnotify(NXHANDLE handle, int signo)
{
FAR struct nxfe_conn_s *conn = (FAR struct nxfe_conn_s *)handle;
struct sigevent se;
se.sigev_notify = SIGEV_SIGNAL;
se.sigev_signo = signo;
se.sigev_value.sival_ptr = (FAR void *)handle;
return mq_notify(conn->crdmq, &se);
}
int main()
{
struct mq_attr attr, attr2;
struct sigevent sigev;
mqd_t mq;
int status;
attr.mq_maxmsg = 2;
attr.mq_msgsize = 100;
mq = mq_open(MQNAME, O_CREAT | O_RDWR | O_EXCL, 0666, &attr);
if (mq == (mqd_t)-1)
err(1, "mq_open");
status = mq_unlink(MQNAME);
if (status)
err(1, "mq_unlink");
status = mq_getattr(mq, &attr2);
if (status)
err(1, "mq_getattr");
if (attr.mq_maxmsg != attr2.mq_maxmsg)
err(1, "mq_maxmsg changed");
if (attr.mq_msgsize != attr2.mq_msgsize)
err(1, "mq_msgsize changed");
sigev.sigev_notify = SIGEV_SIGNAL;
sigev.sigev_signo = SIGRTMIN;
status = mq_notify(mq, &sigev);
if (status)
err(1, "mq_notify");
status = mq_notify(mq, &sigev);
if (status == 0)
err(1, "mq_notify 2");
else if (errno != EBUSY)
err(1, "mq_notify 3");
status = mq_notify(mq, NULL);
if (status)
err(1, "mq_notify 4");
status = mq_close(mq);
if (status)
err(1, "mq_close");
return (0);
}
mqd_t xPosixIPCOpen( const portCHAR *pcPipeName, void (*vMessageInterruptHandler)(xMessageObject,void*), void *pvContext )
{
mqd_t hPipeHandle;
struct sigaction sigrt;
hPipeHandle = mq_open( pcPipeName, O_RDWR | O_CREAT | O_NONBLOCK, S_IRUSR | S_IWUSR, NULL );
if ( -1 == hPipeHandle )
{
hPipeHandle = mq_unlink( pcPipeName );
hPipeHandle = 0;
printf( "Problem opening message pipe.\n" );
}
else
{
printf( "Pipe Open: %s\n", pcPipeName );
}
/* If this is a receive pipe then we set-up the interrupt handler. */
if ( ( 0 != hPipeHandle ) && ( NULL != vMessageInterruptHandler ) )
{
/* Establish the signal handler. */
sigrt.sa_flags = SA_SIGINFO; /* Need some information to be passed. */
sigrt.sa_handler = (__sighandler_t)prvPosixIPCInterruptHandler; /* This is the function to call. */
sigfillset( &sigrt.sa_mask );
sigdelset( &sigrt.sa_mask, SIG_MSG_RX );
sigdelset( &sigrt.sa_mask, SIG_TICK );
if ( 0 != sigaction( SIG_MSG_RX, &sigrt, NULL ) ) /* Register the Signal Handler. */
{
printf( "Problem installing SIG_MSG_RT\n" );
} /* Parameters to the signal handler. */
/* No establish the notify parameters. */
xActualParameters.hPipe = hPipeHandle;
xActualParameters.pvFunction = vMessageInterruptHandler;
xActualParameters.pvContext = pvContext;
xParameters.sival_ptr = &xActualParameters;
/* Set-up the notifcation. */
xMessageEvent.sigev_notify = SIGEV_SIGNAL; /* How to signal. */
xMessageEvent.sigev_signo = SIG_MSG_RX; /* Signal number to use. */
xMessageEvent.sigev_value = xParameters; /* Parameters to pass to the signal handler. */
xMessageEvent.sigev_notify_function = NULL; /* Signal handler function. */
xMessageEvent.sigev_notify_attributes = NULL; /* Parameters if a new thread is created to execute the signal handler. */
/* Register the notification. */
if ( 0 != mq_notify( hPipeHandle, &xMessageEvent ) )
{
printf( "Failed to install Rx interrupt handler: %d.\n", errno );
}
}
return hPipeHandle;
}
void handle_sigusr1(int sig)
{
mq_notify(mqid, &sigev);
STU stu;
unsigned prio;
if (mq_receive(mqid, (char*)&stu, size, &prio) == (mqd_t)-1)
ERR_EXIT("mq_receive");
printf("name=%s age=%d prio=%u\n", stu.name, stu.age, prio);
}
static void NotifySetup(mqd_t *mqdp)
{
struct sigevent sev;
sev.sigev_notify = SIGEV_THREAD; /* Notify via thread */
sev.sigev_notify_function = receive_cb_image;
sev.sigev_notify_attributes = NULL;
sev.sigev_value.sival_ptr = mqdp; /* Argument to threadFunc() */
if (mq_notify(*mqdp, &sev) == -1){
perror("mq_notify");
}else {
APP_INFO("NotifySetup Done!\n");
}
}
void mqueue_check_functions(mqd_t m)
{
(void)mq_close(m);
(void)mq_getattr(m, (struct mq_attr *)0);
(void)mq_notify(m, (const struct sigevent *)0);
(void)mq_open((const char *)0, 0, 0);
(void)mq_receive(m, (char*)0, (size_t)0, (unsigned*)0);
(void)mq_send(m, (const char *)0, (size_t)0, (unsigned)0);
(void)mq_setattr(m, (const struct mq_attr *)0, (struct mq_attr *)0);
(void)mq_timedreceive(m, (char*)0, (size_t)0, (unsigned*)0, (const struct timespec*)0);
(void)mq_timedsend(m, (const char *)0, (size_t)0, (unsigned)0, (const struct timespec*)0);
(void)mq_unlink((const char *)0);
}
static void
notifySetup(mqd_t *mqdp)
{
struct sigevent sev;
sev.sigev_notify = SIGEV_THREAD;
sev.sigev_notify_function = threadFunc;
sev.sigev_notify_attributes = NULL;
sev.sigev_value.sival_ptr = mqdp;
if (mq_notify(*mqdp, &sev) == -1)
errExit("mq_notify");
}
int setup_handler(void (*func)(union sigval sv), mqd_t* message_que_descriptor){
struct sigevent signal_event;
signal_event.sigev_notify = SIGEV_THREAD;
signal_event.sigev_notify_function = func;
signal_event.sigev_notify_attributes = NULL;
signal_event.sigev_value.sival_ptr = message_que_descriptor;
if(mq_notify(*message_que_descriptor, &signal_event)==-1){
handle_error("mq_notify");
}
return 0;
}
static void notifySetup(mqd_t *mqdp)
{
struct sigevent sev;
sev.sigev_notify = SIGEV_THREAD;
sev.sigev_notify_function = threadFunc;
sev.sigev_notify_attributes = NULL; // could be a pointer to pthread_attr_t structure
sev.sigev_value.sival_ptr = mqdp; // argument to threadFunc(). Need to do this so it can reestablish the handler
if (mq_notify(*mqdp, &sev) == -1) {
errExit("mq_notify");
}
}
static int _mq_notify_update(struct mq_ctx *ctx, mq_notify_cb cb)
{
struct sigevent sv;
memset(&sv, 0, sizeof(sv));
sv.sigev_notify = SIGEV_THREAD;
sv.sigev_notify_function = cb;
sv.sigev_notify_attributes = NULL;
sv.sigev_value.sival_ptr = ctx;
if (mq_notify(ctx->mq_rd, &sv) == -1) {//vagrind
loge("mq_notify failed %d: %s\n", errno, strerror(errno));
return -1;
}
return 0;
}
static void
notifySetup(mqd_t *mqdp)
{
struct sigevent sev;
sev.sigev_notify = SIGEV_THREAD; /* Notify via thread */
sev.sigev_notify_function = threadFunc;
sev.sigev_notify_attributes = NULL;
/* Could be pointer to pthread_attr_t structure */
sev.sigev_value.sival_ptr = mqdp; /* Argument to threadFunc() */
if (mq_notify(*mqdp, &sev) == -1)
errExit("mq_notify");
}
void notify_thread(union sigval arg)
{
int n, prio;
if (mq_notify(mqd, &sigev) == -1)
{
perror("mq notify error");
exit(1);
}
if ((n = mq_receive(mqd, buffer, len, &prio)) == -1)
{
perror("receive mq error");
exit(1);
}
printf("SIGUSR1 received, read %d bytes, buffer: %s\n", n, buffer);
}
int main()
{
char qname[NAMESIZE];
mqd_t queue;
struct sigevent ev;
struct sigaction act;
int failure = 0;
sprintf(qname, "/mq_open_20-1_%d", getpid());
queue = mq_open(qname, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR, NULL);
if (queue == (mqd_t) -1) {
perror("mq_open() did not return success");
printf("Test FAILED\n");
return PTS_FAIL;
}
/* set up notification */
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGUSR1;
act.sa_handler = handler;
act.sa_flags = 0;
sigemptyset(&act.sa_mask);
sigaction(SIGUSR1, &act, NULL);
if (mq_notify(queue, &ev) != 0) {
perror("mq_notify() did not return success");
failure = 1;
}
mq_close(queue);
mq_unlink(qname);
if (failure == 1) {
printf("Test FAILED\n");
return PTS_FAIL;
}
printf("Test PASSED\n");
return PTS_PASS;
}
static void benchmark_mq_notify(void)
{
benchmark_timer_t end_time;
int status;
struct sigevent event;
event.sigev_notify = SIGEV_SIGNAL;
event.sigev_signo = SIGUSR1;
benchmark_timer_initialize();
status = mq_notify( queue2, &event );
end_time = benchmark_timer_read();
rtems_test_assert( status == 0 );
put_time(
"mq_notify: only case",
end_time,
1, /* Only executed once */
0,
0
);
}
int main()
{
mqd_t mqdes;
struct sigevent notification;
mqdes = (mqd_t) -1;
notification.sigev_notify = SIGEV_SIGNAL;
notification.sigev_signo = SIGUSR1;
if (mq_notify(mqdes, ¬ification) == -1) {
if (EBADF == errno) {
printf("Test PASSED \n");
return PTS_PASS;
} else {
printf("Test FAILED (errno != EBADF)\n");
return PTS_FAIL;
}
}
printf("Test FAILED\n");
return PTS_FAIL;
}
int main(int argc, char *argv[])
{
mqid = mq_open("/abc", O_RDONLY);
if (mqid == (mqd_t)-1)
ERR_EXIT("mq_open");
struct mq_attr attr;
mq_getattr(mqid, &attr);
size = attr.mq_msgsize;
signal(SIGUSR1, handle_sigusr1);
sigev.sigev_notify = SIGEV_SIGNAL;
sigev.sigev_signo = SIGUSR1;
mq_notify(mqid, &sigev);
for (;;)
pause();
mq_close(mqid);
return 0;
}
int main(int argc, char const *argv[])
{
if (argc != 2)
{
fprintf(stderr, "usage: mqnotifysig1 <name>");
exit(1);
}
struct mq_attr attr;
if ((mqd = mq_open(argv[1], O_RDONLY)) == -1)
{
perror("mq open error");
exit(1);
}
mq_getattr(mqd, &attr);
len = attr.mq_msgsize;
buffer = malloc(len);
memset(buffer, 0, len);
sigev.sigev_notify = SIGEV_THREAD;
sigev.sigev_value.sival_ptr = NULL;
sigev.sigev_notify_function = notify_thread;
sigev.sigev_notify_attributes = NULL;
if (mq_notify(mqd, &sigev) == -1)
{
perror("mq notify error");
exit(1);
}
while (1)
pause();
return 0;
}
static void notify_function (union sigval sv)
{
EncoderOutput *encoder_output;
struct sigevent sev;
GstClockTime last_timestamp;
GstClockTime segment_duration;
gsize size;
gchar *url, buf[128];
encoder_output = (EncoderOutput *)sv.sival_ptr;
/* mq_notify first */
sev.sigev_notify = SIGEV_THREAD;
sev.sigev_notify_function = notify_function;
sev.sigev_notify_attributes = NULL;
sev.sigev_value.sival_ptr = sv.sival_ptr;
if (mq_notify (encoder_output->mqdes, &sev) == -1) {
GST_ERROR ("mq_notify error : %s", g_strerror (errno));
}
size = mq_receive (encoder_output->mqdes, buf, 128, NULL);
if (size == -1) {
GST_ERROR ("mq_receive error : %s", g_strerror (errno));
return;
}
buf[size] = '\0';
sscanf (buf, "%lu", &segment_duration);
last_timestamp = encoder_output_rap_timestamp (encoder_output, *(encoder_output->last_rap_addr));
url = g_strdup_printf ("%lu.ts", encoder_output->last_timestamp);
m3u8playlist_add_entry (encoder_output->m3u8_playlist, url, segment_duration);
if (encoder_output->dvr_duration != 0) {
dvr_record_segment (encoder_output, segment_duration);
}
encoder_output->last_timestamp = last_timestamp;
g_free (url);
}
int main(int argc, char *argv[])
{
if (argc != 2){
printf("Usage: mqnotifysig1 <name>\n");
exit(1);
}
if(-1 == (mqd = mq_open(argv[1], O_RDONLY))){
printf("Can't open mq %s\n", argv[1]);
exit(1);
}
if (-1 == mq_getattr(mqd, &attr)){
printf("Get mq_attr failed\n");
exit(1);
}
if (NULL == (buff = malloc(attr.mq_msgsize))){
printf("Alloc buff failed\n");
exit(1);
}
signal(SIGUSR1, sig_usr1);
sigev.sigev_notify = SIGEV_SIGNAL;
sigev.sigev_signo = SIGUSR1;
if (-1 == mq_notify(mqd, &sigev)){
printf("mq_notify failed\n");
exit(1);
}
for (;;){
pause();
}
exit(0);
}