static switch_status_t timer_next(switch_timer_t *timer)
{
timer_private_t *private_info = timer->private_info;
#ifdef DISABLE_1MS_COND
int cond_index = timer->interval;
#else
int cond_index = 1;
#endif
int delta = (int) (private_info->reference - TIMER_MATRIX[timer->interval].tick);
/* sync up timer if it's not been called for a while otherwise it will return instantly several times until it catches up */
if (delta < -1) {
private_info->reference = timer->tick = TIMER_MATRIX[timer->interval].tick;
}
timer_step(timer);
if (!MATRIX) {
do_sleep(1000 * timer->interval);
goto end;
}
while (globals.RUNNING == 1 && private_info->ready && TIMER_MATRIX[timer->interval].tick < private_info->reference) {
check_roll();
if (globals.timer_count >= runtime.tipping_point) {
os_yield();
globals.use_cond_yield = 0;
} else {
if (globals.use_cond_yield == 1) {
switch_mutex_lock(TIMER_MATRIX[cond_index].mutex);
if (TIMER_MATRIX[timer->interval].tick < private_info->reference) {
switch_thread_cond_wait(TIMER_MATRIX[cond_index].cond, TIMER_MATRIX[cond_index].mutex);
}
switch_mutex_unlock(TIMER_MATRIX[cond_index].mutex);
} else {
do_sleep(1000);
}
}
}
end:
return globals.RUNNING == 1 ? SWITCH_STATUS_SUCCESS : SWITCH_STATUS_FALSE;
}
void HEADBAND::all_on() {
int led;
for (led = 0; led < _nr_leds; led++) {
_leds[led].on();
}
do_sleep(64);
for (led = 0; led < _nr_leds; led++) {
_leds[led].off();
}
}
//---------- philosophers using monitor (condition variable) ----------------------
int philosopher_using_condvar(void * arg) { /* arg is the No. of philosopher 0~N-1*/
int i, iter=0;
i=(int)arg;
cprintf("I am No.%d philosopher_condvar\n",i);
while(iter++<TIMES)
{ /* iterate*/
cprintf("Iter %d, No.%d philosopher_condvar is thinking\n",iter,i); /* thinking*/
do_sleep(SLEEP_TIME);
phi_take_forks_condvar(i);
/* need two forks, maybe blocked */
cprintf("Iter %d, No.%d philosopher_condvar is eating\n",iter,i); /* eating*/
do_sleep(SLEEP_TIME);
phi_put_forks_condvar(i);
/* return two forks back*/
}
cprintf("No.%d philosopher_condvar quit\n",i);
return 0;
}
int main(int argc,char *argv[])
{
char out;
int i;
#ifdef LOCK_LOCKFILE
if(argc!=3) {
fprintf(stderr,"usage:%s character lockfile\n",argv[0]);
exit(1);
}
lockfile=argv[2];
if(!(fname=malloc(strlen(lockfile)+16))) {
perror("malloc()");
exit(1);
}
sprintf(fname,"%s%d",lockfile,getpid());
signal(SIGINT,handler); /* Zajistit zrusení zámku pri násilném ukoncení */
signal(SIGTERM,handler);
signal(SIGQUIT,handler);
signal(SIGHUP,handler);
#else
if(argc!=2) {
fprintf(stderr,"usage: %s character\n",argv[0]);
exit(1);
}
#endif
out=argv[1][0];
for(;;) {
LOCK
for(i=0;i<LINE_LEN;i++) {
if(write(1,&out,1)==-1) {
perror("write()");
exit(1);
}
do_sleep(SLEEP_CHAR);
}
if(write(1,"\n",1)==-1) {
perror("write()");
exit(1);
}
UNLOCK
do_sleep(SLEEP_LINE);
}
}
int philosopher_using_semaphore(void * arg) /* i：哲学家号码，从0到N-1 */
{
int i, iter=0;
i=(int)arg;
cprintf("I am No.%d philosopher_sema\n",i);
while(iter++<TIMES)
{ /* 无限循环 */
cprintf("Iter %d, No.%d philosopher_sema is thinking\n",iter,i); /* 哲学家正在思考 */
do_sleep(SLEEP_TIME);
phi_take_forks_sema(i);
/* 需要两只叉子，或者阻塞 */
cprintf("Iter %d, No.%d philosopher_sema is eating\n",iter,i); /* 进餐 */
do_sleep(SLEEP_TIME);
phi_put_forks_sema(i);
/* 把两把叉子同时放回桌子 */
}
cprintf("No.%d philosopher_sema quit\n",i);
return 0;
}
/* idle task */
static void idle_task(void)
{
while(1)
{
#ifdef BUILD_ARM_BB
do_work();
#else
do_sleep();
#endif
}
}
void update_target (CHAR_DATA *tch, int affect_type)
{
if ( affect_type == MAGIC_AFFECT_SLEEP ) {
do_sleep (tch, "", 0);
if ( tch->fighting ) {
if ( tch->fighting == tch )
stop_fighting (tch->fighting);
stop_fighting (tch);
}
}
}
ATMO_BOOL CFnordlichtConnection::reset(unsigned char addr)
{
if(m_hComport == INVALID_HANDLE_VALUE)
return ATMO_FALSE;
stop(255);
if ( sync() && start_bootloader(addr) )
{
#if defined(_ATMO_VLC_PLUGIN_)
do_sleep(200000); // wait 200ms
#else
do_sleep(200); // wait 200ms
#endif
if ( sync() && boot_enter_application(addr) )
return ATMO_TRUE;
}
return ATMO_FALSE;
}
void HEADBAND::blink_all(int nr_times) {
int led, nr_blinks;
for (nr_blinks = 0; nr_blinks < nr_times; nr_blinks++) {
for (led = 0; led < _nr_leds; led++) {
_leds[led].on();
}
do_sleep(10);
for (led = 0; led < _nr_leds; led++) {
_leds[led].off();
}
}
}
int body()
{
char c;
printf("proc %d starts from body()\n", running->pid);
while(1)
{
printf("-----------------------------------------\n");
//prints the list of procs that are initializedd and free
printf("freelist = ");
printQueue(freeList);// optional: show the freeList
//print ready queue which are procs that are ready
printf("readyQueue = ");
printQueue(readyQueue); // show the readyQueue
//printf("sleepList = ");
//printQueue(sleepList);
printf("-----------------------------------------\n");
printf("proc %d running: parent=%d\n",running->pid,running->ppid);
printf("enter a char [s|f|q z|a|w] : ");
c = getc();
printf("%c\n", c);
switch(c)
{
case 'f': //fork a child off of the current process
do_kfork();
break;
case 's': //switch to next process in ready queue
do_tswitch();
break;
case 'q': //zombie the current process
do_exit();
break;
case 'z': //running PROC go to sleep on an event value
do_sleep();
break;
case 'a': //wakeup all PROCs sleeping on event
do_wakeup();
break;
case 'w': //to wait for a ZOMBIE child
do_wait();
break;
}
}
}
static switch_status_t timer_init(switch_timer_t *timer)
{
timer_private_t *private_info;
int sanity = 0;
while (globals.STARTED == 0) {
do_sleep(100000);
if (++sanity == 300) {
abort();
}
}
if (globals.RUNNING != 1 || !globals.mutex || timer->interval < 1) {
return SWITCH_STATUS_FALSE;
}
if ((private_info = switch_core_alloc(timer->memory_pool, sizeof(*private_info)))) {
switch_mutex_lock(globals.mutex);
if (!TIMER_MATRIX[timer->interval].mutex) {
switch_mutex_init(&TIMER_MATRIX[timer->interval].mutex, SWITCH_MUTEX_NESTED, module_pool);
switch_thread_cond_create(&TIMER_MATRIX[timer->interval].cond, module_pool);
}
TIMER_MATRIX[timer->interval].count++;
switch_mutex_unlock(globals.mutex);
timer->private_info = private_info;
private_info->start = private_info->reference = TIMER_MATRIX[timer->interval].tick;
private_info->start -= 2; /* switch_core_timer_init sets samplecount to samples, this makes first next() step once */
private_info->roll = TIMER_MATRIX[timer->interval].roll;
private_info->ready = 1;
if (timer->interval > 0 && timer->interval < MS_PER_TICK) {
MS_PER_TICK = timer->interval;
STEP_MS = 1;
STEP_MIC = 1000;
TICK_PER_SEC = 10000;
switch_time_sync();
}
switch_mutex_lock(globals.mutex);
globals.timer_count++;
if (globals.timer_count == (runtime.tipping_point + 1)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Crossed tipping point of %u, shifting into high-gear.\n", runtime.tipping_point);
}
switch_mutex_unlock(globals.mutex);
return SWITCH_STATUS_SUCCESS;
}
return SWITCH_STATUS_MEMERR;
}
//
// void test_1()
//
// This test insures that Timers are constructed properly.
//
static void test_1()
{
spica::Timer object_1;
// Sleep for a while. If the timer is running (shouldn't be) let's
// give it a chance to accumulate some time.
//
std::cout << "Test #1: Sleeping for 5 seconds..." << std::endl;
do_sleep(5);
// It should have just sat there.
std::cout << " object_1's time is: " << object_1.time()
<< "ms (should be zero)" << std::endl;
}
/** @brief Pauses the writes, so that you can manipulate the base object (the formatters/destinations, for instance)
After this function has been called, you can be @b sure that the other (dedicated) thread is not writing any messagges.
In other words, the other thread is not manipulating the base object (formatters/destinations, for instance), but you can do it.
FIXME allow a timeout as well
*/
void pause() {
{ scoped_lock lk( non_const_context_base::context().cs);
non_const_context_base::context().is_paused = true;
non_const_context_base::context().pause_acknowledged = false;
}
while ( true) {
do_sleep(10);
scoped_lock lk( non_const_context_base::context().cs);
if ( non_const_context_base::context().pause_acknowledged )
// the other thread has acknowledged
break;
}
}
void HEADBAND::start() {
int led;
int action = random(17);
switch (action) {
case 0:
case 1:
// strobe up
strobe_up();
break;
case 2:
case 3:
// strobe down
strobe_down();
break;
case 5:
strobe_up();
strobe_down();
break;
case 6:
case 7:
case 8:
case 9:
led = random(_nr_leds);
_leds[led].choose();
break;
case 10:
glow_up();
break;
case 11:
glow_down();
break;
case 12:
glow_all();
break;
case 13:
blink_all(random(3));
break;
case 14:
shira_morse();
break;
case 15:
alternate(random(5) + 5);
break;
case 16:
all_on();
break;
}
do_sleep(random(15) * 1000);
}
void handle_signal(int signal) {
const char *signal_name;
sigset_t pending;
// Find out which signal we're handling
switch (signal) {
case SIGHUP:
signal_name = "SIGHUP";
break;
case SIGUSR1:
signal_name = "SIGUSR1";
break;
case SIGINT:
printf("Caught SIGINT, exiting now\n");
exit(0);
default:
fprintf(stderr, "Caught wrong signal: %d\n", signal);
return;
}
/*
* Please note that printf et al. are NOT safe to use in signal handlers.
* Look for async safe functions.
*/
printf("Caught %s, sleeping for ~3 seconds\n"
"Try sending another SIGHUP / SIGINT / SIGALRM "
"(or more) meanwhile\n", signal_name);
/*
* Indeed, all signals are blocked during this handler
* But, at least on OSX, if you send 2 other SIGHUP,
* only one will be delivered: signals are not queued
* However, if you send HUP, INT, HUP,
* you'll see that both INT and HUP are queued
* Even more, on my system, HUP has priority over INT
*/
do_sleep(5);
printf("Done sleeping for %s\n", signal_name);
// So what did you send me while I was asleep?
sigpending(&pending);
if (sigismember(&pending, SIGHUP)) {
printf("A SIGHUP is waiting\n");
}
if (sigismember(&pending, SIGUSR1)) {
printf("A SIGUSR1 is waiting\n");
}
printf("Done handling %s\n\n", signal_name);
}
static switch_interval_time_t average_time(switch_interval_time_t t, int reps)
{
int x = 0;
switch_time_t start, stop, sum = 0;
for (x = 0; x < reps; x++) {
start = switch_time_ref();
do_sleep(t);
stop = switch_time_ref();
sum += (stop - start);
}
return sum / reps;
}
int body()
{
char c;
color = running->pid + 7;
printf("\nproc %d resumes to body()\n", running->pid);
while(1){
color = running->pid + 7;
printQueue(freeList, "freeList");
printQueue(readyQueue, "readyQueue");
printf("proc %d running : \nenter a key (s|q|f | z|a|w): ", running->pid);
c = getc();
printf("%c\n", c);
switch(c)
{
case 's':
tswitch();
break;
case 'q':
do_exit();
break;
case 'f':
do_kfork();
break;
case 'z':
//printf("sleep\n");
do_sleep();
//go to sleep on an even
break;
case 'a':
//printf("wake up\n");
do_wakeup();
//wakeup all procs sleeping on event
break;
case 'w':
//printf("wait\n");
do_wait();
//wait for a ZOMBIE child
break;
}
//tswitch();
}
}
void one_measurement(int seconds, char *workload)
{
create_all_usb_devices();
start_power_measurement();
devices_start_measurement();
start_process_measurement();
start_cpu_measurement();
if (workload && workload[0]) {
if (system(workload))
fprintf(stderr, _("Unknown issue running workload!\n"));
} else {
do_sleep(seconds);
}
end_cpu_measurement();
end_process_measurement();
collect_open_devices();
devices_end_measurement();
end_power_measurement();
process_cpu_data();
process_process_data();
/* output stats */
process_update_display();
report_summary();
w_display_cpu_cstates();
w_display_cpu_pstates();
if (reporttype != REPORT_OFF) {
report_display_cpu_cstates();
report_display_cpu_pstates();
}
report_process_update_display();
tuning_update_display();
end_process_data();
global_joules_consumed();
compute_bundle();
show_report_devices();
report_show_open_devices();
report_devices();
ahci_create_device_stats_table();
store_results(measurement_time);
end_cpu_data();
}
void master()
{
pid_t server_pid, client_pid;
// handle error properly, otherwise
/* start the server */
spawn(server, &server_pid);
do_sleep(10);
/* start the client */
spawn(client, &client_pid);
/* wait all */
waitpid(client_pid);
waitpid(server_pid);
return;
}
void one_measurement(int seconds, char *workload)
{
create_all_usb_devices();
start_power_measurement();
devices_start_measurement();
start_process_measurement();
start_cpu_measurement();
if (workload && workload[0]) {
system(workload);
} else {
do_sleep(seconds);
}
end_cpu_measurement();
end_process_measurement();
collect_open_devices();
devices_end_measurement();
end_power_measurement();
process_cpu_data();
process_process_data();
/* output stats */
process_update_display();
report_summary();
w_display_cpu_cstates();
w_display_cpu_pstates();
report_display_cpu_cstates();
report_display_cpu_pstates();
report_process_update_display();
tuning_update_display();
end_process_data();
global_joules_consumed();
compute_bundle();
show_report_devices();
report_show_open_devices();
report_devices();
store_results(measurement_time);
end_cpu_data();
}
void run_test(int64_t delay_ns)
{
for (int i = 0; i <= 25; i++) {
int64_t start, finish;
start = get_ns();
do_get(key, 0);
finish = get_ns();
int64_t elapsed = finish - start;
if (i > 0) {
printf("%f\n", elapsed / 1e9);
fflush(stdout);
}
do_sleep(delay_ns);
}
}
void do_client_run(ctx_t *ctx)
{
int full = ctx->size;
int half = ctx->size >> 1;
int cnt = 0;
/* 1 */
do_recv(ctx, full, cnt++);
/* 3 */
do_recv(ctx, full, cnt);
/* 4 */
do_recv(ctx, half, cnt++);
do_recv(ctx, half, cnt++);
do_sleep(50);
}
void do_server_run(ctx_t *ctx)
{
int full = ctx->size;
int half = ctx->size >> 1;
int cnt = 0;
/* 1 */
do_send(ctx, full, cnt++);
/* 3 */
do_send(ctx, half, cnt);
do_send(ctx, half, cnt++);
/* 4 */
do_send(ctx, full, cnt++);
do_sleep(50);
}
int main(void)
{
// Attiny13A fuse setting: -U lfuse:w:0x7A:m -U hfuse:w:0xFB:m
//
// set system-clock prescaler to 1/8
// 4.8MHz RC-oscillator --> 600kHz system-clock
CLKPR = _BV(CLKPCE);
CLKPR = _BV(CLKPS1) | _BV(CLKPS0);
// configure TIMER0
TCCR0A = _BV(WGM01); // set CTC mode
TCCR0B = ( _BV(CS01) ); // set prescaler to 8
// enable COMPA ISR
TIMSK0 = _BV(OCIE0A);
// set top value for TCNT0
OCR0A = 10; // just some start value
// pull-up on for BUTTON_PIN
PORT_OUT_REG |= _BV(BUTTON_PIN);
// set port directions
PORT_DIR_REG = PORT_DIR_MASK;
// disable analog comparator to save power
ACSR = _BV(ACD);
// Pin change interrupt enabled
// The actual pin will be activated later
GIMSK |= _BV(PCIE);
// globally enable interrupts
// necessary to wake up from sleep via pin-change interrupt
sei();
fade(0,255,1);
while (1) {
// the flag 'sleep_requested' is set in the ISR: TIM0_COMPA_vect
if(sleep_requested == 1) {
do_sleep();
}
flicker();
}
}
int body()
{ char c;
while(1){
printf("\n\n\n");
ps();
printf("I am Proc %d in body()\n", running->pid);
printf("Input a char : [s|q|f|z|a|w]: ");
c=getc();
switch(c){
case 's': tswitch(); break;
case 'q': do_exit(); break;
case 'f': kfork(); break;
case 'z': do_sleep(); break;
case 'a': do_wakeup(); break;
case 'w': do_wait(); break;
default : break;
}
}
}
SWITCH_DECLARE(void) switch_cond_yield(switch_interval_time_t t)
{
switch_time_t want;
if (!t)
return;
if (globals.RUNNING != 1 || !runtime.timestamp || globals.use_cond_yield != 1) {
do_sleep(t);
return;
}
want = runtime.timestamp + t;
while (globals.RUNNING == 1 && globals.use_cond_yield == 1 && runtime.timestamp < want) {
switch_mutex_lock(TIMER_MATRIX[1].mutex);
if (runtime.timestamp < want) {
switch_thread_cond_wait(TIMER_MATRIX[1].cond, TIMER_MATRIX[1].mutex);
}
switch_mutex_unlock(TIMER_MATRIX[1].mutex);
}
}
/* Usage example
*
* First, compile and run this program:
* $ gcc signal.c
* $ ./a.out
*
* It will print out its pid. Use it from another terminal to send signals
* $ kill -HUP <pid>
* $ kill -USR1 <pid>
* $ kill -ALRM <pid>
*
* Exit the process with ^C ( = SIGINT) or SIGKILL, SIGTERM
*/
int main() {
struct sigaction sa;
// Print pid, so that we can send signals from other shells
printf("My pid is: %d\n", getpid());
// Setup the sighub handler
sa.sa_handler = &handle_signal;
// Restart the system call, if at all possible
sa.sa_flags = SA_RESTART;
// Block every signal during the handler
sigfillset(&sa.sa_mask);
// Intercept SIGHUP and SIGINT
if (sigaction(SIGHUP, &sa, NULL) == -1) {
perror("Error: cannot handle SIGHUP"); // Should not happen
}
if (sigaction(SIGUSR1, &sa, NULL) == -1) {
perror("Error: cannot handle SIGUSR1"); // Should not happen
}
// Will always fail, SIGKILL is intended to force kill your process
if (sigaction(SIGKILL, &sa, NULL) == -1) {
perror("Cannot handle SIGKILL"); // Will always happen
printf("You can never handle SIGKILL anyway...\n");
}
if (sigaction(SIGINT, &sa, NULL) == -1) {
perror("Error: cannot handle SIGINT"); // Should not happen
}
for (;;) {
printf("\nSleeping for ~3 seconds\n");
do_sleep(3); // Later to be replaced with a SIGALRM
}
}
void *
mt_thread(void *unused)
{
print_line("Aux thread tries to lock mutex");
ethr_mutex_lock(&mt_mutex);
print_line("Aux thread locked mutex");
ASSERT(mt_data == 0);
mt_data = 1;
print_line("Aux thread wrote");
print_line("Aux thread goes to sleep for 1 second");
do_sleep(1);
print_line("Aux thread woke up");
ASSERT(mt_data == 1);
ethr_mutex_unlock(&mt_mutex);
print_line("Aux thread unlocked mutex");
return NULL;
}
void *
st_thread(void *unused)
{
print_line("Aux thread tries to lock spinlock");
ethr_spin_lock(&st_spinlock);
print_line("Aux thread locked spinlock");
ASSERT(st_data == 0);
st_data = 1;
print_line("Aux thread wrote");
print_line("Aux thread goes to sleep for 1 second");
do_sleep(1);
print_line("Aux thread woke up");
ASSERT(st_data == 1);
ethr_spin_unlock(&st_spinlock);
print_line("Aux thread unlocked spinlock");
return NULL;
}
static void
detached_thread_test(void)
{
ethr_thr_opts thr_opts = ETHR_THR_OPTS_DEFAULT_INITER;
ethr_tid tid[DT_BATCH_SIZE];
int i, j, res;
res = ethr_mutex_init(&dt_mutex);
ASSERT(res == 0);
res = ethr_cond_init(&dt_cond);
ASSERT(res == 0);
thr_opts.detached = 1;
dt_count = 0;
dt_limit = 0;
for (i = 0; i < DT_THREADS/DT_BATCH_SIZE; i++) {
dt_limit += DT_BATCH_SIZE;
for (j = 0; j < DT_BATCH_SIZE; j++) {
res = ethr_thr_create(&tid[j], dt_thread, NULL, &thr_opts);
ASSERT(res == 0);
}
ethr_mutex_lock(&dt_mutex);
while (dt_count < dt_limit) {
res = ethr_cond_wait(&dt_cond, &dt_mutex);
ASSERT(res == 0 || res == EINTR);
}
ethr_mutex_unlock(&dt_mutex);
print_line("dt_count = %d", dt_count);
}
do_sleep(1);
}