int ExecutionTracker::SimulateCondTimedwait(thrID myself,
void * ret_addr,
pthread_cond_t * cond,
pthread_mutex_t * lock,
const struct timespec * time) {
glock();
log->SimulateCondTimedwait(myself);
checkCondValidity(cond);
//unlock
bool proceed = BeforeMutexUnlock(myself, ret_addr, lock, IS_COND_WAIT);
safe_assert(proceed);
safe_assert(Originals::pthread_mutex_unlock(lock) == OPERATION_SUCCESSFUL);
AfterMutexUnlock(myself, ret_addr, OPERATION_SUCCESSFUL,lock,IS_COND_WAIT);
cond_map[myself] = cond;
handleSimulateCondTimedwait(myself, ret_addr, cond, lock);
SchedPointInfo tmp(ret_addr, "Simulate Timed Wait (s)",
myself, enable_map, IS_YIELD, cond, lock);
schedule(&tmp);
gunlock();
waitPauseThread(myself);
glock();
cond_map[myself] = NULL;
gunlock();
//lock
proceed = BeforeMutexLock(myself, ret_addr, lock, IS_COND_WAIT);
safe_assert(proceed == false);
signalThreadReady(myself);
glock();
bool was_signalled = was_signalled_map[myself];
if (! was_signalled) {
SchedPointInfo tmp(ret_addr, "Simulate Timed Wait (e)",
myself, enable_map, IS_NOT_YIELD, cond, lock);
schedule(&tmp);
was_signalled_map[myself] = true;
}
gunlock();
pauseThread(myself);
SimulateMutexLock(myself, ret_addr, lock, IS_COND_WAIT);
if (was_signalled) {
log->timedwaitNoTimeout(myself);
glock();
gunlock();
return OPERATION_SUCCESSFUL;
} else {
log->timedwaitTimeout(myself);
glock();
gunlock();
return ETIMEDOUT;
}
}
void ExecutionTracker::myMemoryWrite(thrID myself, void * ret_addr,
void * addr) {
glock();
log->myMemoryWrite(myself, addr);
handleMyMemoryWrite(myself, ret_addr, addr);
SchedPointInfo tmp(ret_addr, "Memory Write", myself,
enable_map, IS_NOT_YIELD, addr);
schedule(&tmp);
gunlock();
pauseThread(myself);
glock();
gunlock();
}
bool ExecutionTracker::BeforeBarrierWait(thrID myself, void * ret_addr,
pthread_barrier_t * barrier) {
glock();
log->BeforeBarrierWait(myself);
checkBarrierValidity(barrier);
int target_count = bt->getBarrierCount(barrier);
int threads_on_barrier = bt->getNumberThreadsWaitingOnBarrier(barrier);
if (threads_on_barrier + 1 >= target_count) {
vector<thrID> my_thr = bt->getThreadsWaitingOnBarrier(barrier);
safe_assert(((unsigned) (my_thr.size() + 1))
== (bt->getBarrierCount(barrier)));
vector<thrID>::iterator itr;
for (itr = my_thr.begin(); itr != my_thr.end(); itr++) {
safe_assert(isDisabled((*itr)));
enableThread((*itr));
}
enableThread(myself);
bt->clearThreadsWaitingOnBarrier(barrier);
} else {
bt->threadWaitingOnBarrier(myself, barrier);
disableThread(myself);
}
SchedPointInfo tmp(ret_addr, "Before Barrier Wait", myself,
enable_map, IS_NOT_YIELD, barrier);
schedule(&tmp);
gunlock();
pauseThread(myself);
return false;
}
void ExecutionTracker::AfterMutexUnlock(thrID myself,
void * ret_addr,
int ret_val,
pthread_mutex_t * lock,
bool isWait) {
if (!isWait) {
glock();
}
/* Lock and unlocks get called when a thread is finishing up */
if (threadIsFinished(myself)) {
if (!isWait) {
gunlock();
}
return;
}
log->AfterMutexUnlock(myself, isWait);
threadHasReleasedLock(myself, lock);
handleAfterMutexUnlock(myself, ret_addr, lock, isWait);
if (! isWait) {
SchedPointInfo tmp(ret_addr, "After Mutex Unlock", myself,
enable_map, IS_NOT_YIELD, lock);
schedule(&tmp);
gunlock();
pauseThread(myself);
}
}
bool ExecutionTracker::BeforeCondBroadcast(thrID myself, void * ret_addr,
pthread_cond_t * cond) {
glock();
checkCondValidity(cond);
gunlock();
return false;
}
bool ExecutionTracker::BeforeMutexLock(thrID myself, void * ret_addr,
pthread_mutex_t * lock, bool isWait) {
if (! isWait) {
glock();
}
/* Lock and unlocks get called when a thread is finishing up */
if (threadIsFinished(myself)) {
if (! isWait) {
gunlock();
}
return true;
}
log->BeforeMutexLock(myself, ret_addr, lock, isWait);
determineLockStatus(myself, lock);
handleBeforeMutexLock(myself, ret_addr, lock, isWait);
if (! isWait) {
SchedPointInfo tmp(ret_addr, "Before Mutex Lock", myself,
enable_map, IS_NOT_YIELD, lock);
schedule(&tmp);
gunlock();
pauseThread(myself);
}
return false;
}
widget *new_toplevel_window(gui *_gui, int width, int height, char *title)
{
struct gui *g = _gui;
struct toplevel_window_widget *w;
glock(g);
w = new_widget(g, TOPLEVEL_WINDOW, sizeof(struct toplevel_window_widget));
w->common.width = width;
w->common.height = height;
w->x = x_create_window(g->x, width, height, title);
w->common.repack = repack;
w->common.add_child = add_child;
w->common.allocate = allocate;
w->common.paint = paint;
w->common.button = button;
gunlock(g);
return w;
}
void
DjVuDebug::set_debug_file(FILE * file)
{
GCriticalSectionLock glock(&debug_lock);
if (debug_file && (debug_file != stderr))
fclose(debug_file);
debug_file = file;
}
void ExecutionTracker::SimulateExit(thrID myself, void * ret_addr,
void * arg) {
glock();
log->SimulateExit(myself);
finalizeThread(myself, ret_addr);
gunlock();
Originals::pthread_exit(arg);
}
int ExecutionTracker::SimulateCondDestroy(thrID myself,
void * ret_addr, pthread_cond_t * cond) {
glock();
cond_destroy.push_back(cond);
int ret_val = Originals::pthread_cond_destroy(cond);
gunlock();
return ret_val;
}
int ExecutionTracker::SimulateMutexDestroy(thrID myself, void * addr,
pthread_mutex_t * lock) {
glock();
mutex_destroy.push_back(lock);
int ret_val = Originals::pthread_mutex_destroy(lock);
gunlock();
return ret_val;
}
void ExecutionTracker::ThreadFinish(thrID myself,
void * (*start_routine) (void *), void * arg) {
glock();
log->ThreadFinish(myself, arg);
finalizeThread(myself, reinterpret_cast<void *>(start_routine));
lock_count--;
Originals::pthread_mutex_unlock(global_lock);
}
void ExecutionTracker::ThreadStart(thrID myself,
void * (*start_routine) (void *), void * arg) {
glock();
log->ThreadStart(myself, arg);
handleThreadStart(myself, start_routine);
gunlock();
pauseThread(myself);
}
int ExecutionTracker::SimulateSemDestroy(thrID myself, void * ret_addr,
sem_t * sem) {
glock();
sem_destroy.push_back(sem);
int ret_val = Originals::sem_destroy(sem);
gunlock();
return ret_val;
}
int ExecutionTracker::SimulateBarrierDestroy(thrID myself,
void * ret_addr, pthread_barrier_t * barrier) {
glock();
barrier_destroy.push_back(barrier);
int ret_val = Originals::pthread_barrier_destroy(barrier);
gunlock();
return ret_val;
}
void ExecutionTracker::thrilleCheckpoint(thrID myself, void * ret_addr) {
glock();
printf("Thrille: CHECKPOINT CALLED!\n");
SchedPointInfo tmp(ret_addr, "Thrille Checkpoint", myself,
enable_map, IS_NOT_YIELD);
schedule(&tmp);
gunlock();
pauseThread(myself);
return;
}
bool ExecutionTracker::BeforeCondWait(thrID myself,
void * ret_addr,
pthread_cond_t * cond,
pthread_mutex_t * lock) {
glock();
log->BeforeCondWait(myself);
disableThread(myself);
gunlock();
return false;
}
void ExecutionTracker::thrilleSchedPoint(thrID myself, void * ret_addr) {
glock();
log->BeforeSchedPoint(myself);
safe_assert(isEnabled(myself));
SchedPointInfo tmp(ret_addr, "Before Generic Schedule Point", myself,
enable_map, IS_NOT_YIELD);
schedule(&tmp);
gunlock();
pauseThread(myself);
}
void ExecutionTracker::scheduleThreadWaitingOnCond(thrID target,
SignalPointInfo * s) {
glock();
safe_assert(s->cond_map[target] == s->cond);
log->signalScheduling(target, s);
wait_ready_map[target] = false;
waitWakeThread(target);
gunlock();
waitThreadReady(s->thread, target);
}
int ExecutionTracker::SimulateSemWait(thrID myself, void * ret_addr,
sem_t * sem) {
glock();
safe_assert(checkSemaphoreValue(sem) > 0);
log->SimulateSemWait(myself);
checkSemValidity(sem);
int result = Originals::sem_wait(sem);
threadHasPassedSemaphore(myself, sem);
gunlock();
return result;
}
int ExecutionTracker::SimulateMutexTrylock(thrID myself, void * ret_addr,
pthread_mutex_t * lock) {
glock();
log->SimulateMutexTrylock(myself);
int result = Originals::pthread_mutex_trylock(lock);
if (result == OPERATION_SUCCESSFUL) {
threadHasAcquiredLock(myself, lock);
}
gunlock();
return result;
}
/* TODO: implement this */
bool ExecutionTracker::BeforeSigwait(thrID myself, void * ret_addr,
const sigset_t * set, int * sig) {
glock();
disableThread(myself);
SchedPointInfo tmp(ret_addr, "Before Sig Wait", myself, enable_map, false);
schedule(&tmp);
gunlock();
bool sigwait_is_implemented = false;
safe_assert(sigwait_is_implemented);
return false;
}
bool ExecutionTracker::BeforeCondTimedwait(thrID myself,
void * ret_addr,
pthread_cond_t * cond,
pthread_mutex_t * lock,
const struct timespec * time) {
glock();
log->BeforeCondTimedwait(myself);
enableThread(myself);
gunlock();
return false;
}
bool ExecutionTracker::BeforeBarrierInit(thrID myself, void * ret_addr,
pthread_barrier_t * barrier, const pthread_barrierattr_t * battr,
unsigned count) {
glock();
log->BeforeBarrierInit(myself);
bt->initBarrier(barrier, count);
barrierIsValid(barrier);
gunlock();
return true;
}
void ExecutionTracker::pauseThread(thrID target) {
glock();
sem_t * pause = sem_map[target];
safe_assert(pause != NULL);
log->pauseThread(target);
gunlock();
int result;
do {
result = Originals::sem_wait(pause);
} while (result == -1 && errno == EINTR);
safe_assert(result == OPERATION_SUCCESSFUL);
}
unsigned int ExecutionTracker::SimulateSleep(thrID myself, void * ret_addr,
unsigned int time) {
glock();
log->mySleep(myself);
handleMySleep(myself, ret_addr);
SchedPointInfo tmp(ret_addr, "Simulate Sleep",
myself, enable_map, IS_YIELD);
schedule(&tmp);
gunlock();
pauseThread(myself);
return OPERATION_SUCCESSFUL;
}
void ExecutionTracker::waitPauseThread(thrID target) {
glock();
sem_t * pause = wait_sem_map[target];
safe_assert(pause != NULL);
log->waitPauseThread(target);
gunlock();
int result;
do {
result = Originals::sem_wait(pause);
} while (result == -1 && errno == EINTR);
safe_assert(result == 0);
}
bool ExecutionTracker::BeforeCreate(thrID myself,
thrID child,
void * ret_addr,
pthread_t * thread,
const pthread_attr_t * thread_attr,
void *(* routine)(void *),
void * arg) {
glock();
log->BeforeCreate(myself, child);
initializeThreadData(child);
gunlock();
return true;
}
bool ExecutionTracker::BeforeMutexTrylock(thrID myself, void * ret_addr,
pthread_mutex_t * lock) {
glock();
log->BeforeMutexTrylock(myself);
enableThread(myself);
handleBeforeMutexLock(myself, ret_addr, lock, IS_NOT_COND_WAIT);
SchedPointInfo tmp(ret_addr, "Before Mutex Try Lock", myself,
enable_map, IS_NOT_YIELD, lock);
schedule(&tmp);
gunlock();
pauseThread(myself);
return false;
}
int ExecutionTracker::SimulateMutexLock(thrID myself, void * ret_addr,
pthread_mutex_t * lock, bool isWait) {
if (! isWait) {
glock();
}
log->SimulateMutexLock(myself, isWait);
threadHasAcquiredLock(myself, lock);
int result = Originals::pthread_mutex_trylock(lock);
if (! isWait) {
gunlock();
}
return result;
}