#include <bits/pthreadtypes.h>
#include <pthread.h>
+/* Mutex types. */
+enum
+{
+ PTHREAD_MUTEX_TIMED_NP,
+ PTHREAD_MUTEX_RECURSIVE_NP,
+ PTHREAD_MUTEX_ERRORCHECK_NP,
+ PTHREAD_MUTEX_ADAPTIVE_NP
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
+ ,
+ PTHREAD_MUTEX_NORMAL = PTHREAD_MUTEX_TIMED_NP,
+ PTHREAD_MUTEX_RECURSIVE = PTHREAD_MUTEX_RECURSIVE_NP,
+ PTHREAD_MUTEX_ERRORCHECK = PTHREAD_MUTEX_ERRORCHECK_NP,
+ PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL
+#endif
+#ifdef __USE_GNU
+ /* For compatibility. */
+ , PTHREAD_MUTEX_FAST_NP = PTHREAD_MUTEX_TIMED_NP
+#endif
+};
+
typedef void *(*pthread_start_t)(void *);
struct pthread_params {
pthread_mutex_t *p_mutex, const struct timespec *abstime);
int pthread_cond_signal(pthread_cond_t *);
+void pthread_cleanup_push(void (*routine)(void*), void *arg );
+
int user_main(int, char**);
// --- not implemented yet ---
#include "threads-model.h"
#include "action.h"
#include "pthread.h"
-#include <mutex>
+
+#include "snapshot-interface.h"
+#include "datarace.h"
+
+#include "mutex.h"
#include <condition_variable>
#include <assert.h>
#include "model.h"
#include "execution.h"
+static void param_defaults(struct model_params *params)
+{
+ params->maxreads = 0;
+ params->maxfuturedelay = 6;
+ params->fairwindow = 0;
+ params->yieldon = false;
+ params->yieldblock = false;
+ params->enabledcount = 1;
+ params->bound = 0;
+ params->maxfuturevalues = 0;
+ params->expireslop = 4;
+ params->verbose = !!DBG_ENABLED();
+ params->uninitvalue = 0;
+ params->maxexecutions = 0;
+}
+
+static void model_main()
+{
+ struct model_params params;
+
+ param_defaults(¶ms);
+
+ //parse_options(¶ms, main_argc, main_argv);
+
+ //Initialize race detector
+ initRaceDetector();
+
+ snapshot_stack_init();
+
+ model = new ModelChecker(params); // L: Model thread is created
+// install_trace_analyses(model->get_execution()); L: disable plugin
+
+ snapshot_record(0);
+ model->run();
+ delete model;
+
+ DEBUG("Exiting\n");
+}
+
int pthread_create(pthread_t *t, const pthread_attr_t * attr,
pthread_start_t start_routine, void * arg) {
struct pthread_params params = { start_routine, arg };
}
int pthread_mutex_init(pthread_mutex_t *p_mutex, const pthread_mutexattr_t *) {
- std::mutex *m = new std::mutex();
+ if (!model) {
+ snapshot_system_init(10000, 1024, 1024, 40000, &model_main);
+ }
+
+ cdsc::mutex *m = new cdsc::mutex();
ModelExecution *execution = model->get_execution();
execution->mutex_map.put(p_mutex, m);
int pthread_mutex_lock(pthread_mutex_t *p_mutex) {
ModelExecution *execution = model->get_execution();
- std::mutex *m = execution->mutex_map.get(p_mutex);
- m->lock();
- /* error message? */
+
+ /* to protect the case where PTHREAD_MUTEX_INITIALIZER is used
+ instead of pthread_mutex_init, or where *p_mutex is not stored
+ in the execution->mutex_map for some reason. */
+ if (!execution->mutex_map.contains(p_mutex)) {
+ pthread_mutex_init(p_mutex, NULL);
+ }
+
+ cdsc::mutex *m = execution->mutex_map.get(p_mutex);
+
+ if (m != NULL) {
+ m->lock();
+ } else {
+ printf("ah\n");
+ }
+
return 0;
}
+
int pthread_mutex_trylock(pthread_mutex_t *p_mutex) {
ModelExecution *execution = model->get_execution();
- std::mutex *m = execution->mutex_map.get(p_mutex);
+ cdsc::mutex *m = execution->mutex_map.get(p_mutex);
return m->try_lock();
}
int pthread_mutex_unlock(pthread_mutex_t *p_mutex) {
ModelExecution *execution = model->get_execution();
- std::mutex *m = execution->mutex_map.get(p_mutex);
- m->unlock();
+ cdsc::mutex *m = execution->mutex_map.get(p_mutex);
+
+ if (m != NULL) {
+ m->unlock();
+ } else {
+ printf("try to unlock an untracked pthread_mutex\n");
+ }
+
return 0;
}
int pthread_mutex_timedlock (pthread_mutex_t *__restrict p_mutex,
const struct timespec *__restrict abstime) {
+// timedlock just gives the option of giving up the lock, so return and let the scheduler decide which thread goes next
+
+/*
ModelExecution *execution = model->get_execution();
- std::mutex *m = execution->mutex_map.get(p_mutex);
- m->lock();
+ if (!execution->mutex_map.contains(p_mutex)) {
+ pthread_mutex_init(p_mutex, NULL);
+ }
+ cdsc::mutex *m = execution->mutex_map.get(p_mutex);
+
+ if (m != NULL) {
+ m->lock();
+ } else {
+ printf("something is wrong with pthread_mutex_timedlock\n");
+ }
+
+ printf("pthread_mutex_timedlock is called. It is currently implemented as a normal lock operation without no timeout\n");
+*/
return 0;
}
}
int pthread_cond_init(pthread_cond_t *p_cond, const pthread_condattr_t *attr) {
- std::condition_variable *v = new std::condition_variable();
+ cdsc::condition_variable *v = new cdsc::condition_variable();
ModelExecution *execution = model->get_execution();
execution->cond_map.put(p_cond, v);
int pthread_cond_wait(pthread_cond_t *p_cond, pthread_mutex_t *p_mutex) {
ModelExecution *execution = model->get_execution();
- std::condition_variable *v = execution->cond_map.get(p_cond);
- std::mutex *m = execution->mutex_map.get(p_mutex);
+ if ( !execution->cond_map.contains(p_cond) )
+ pthread_cond_init(p_cond, NULL);
+
+ cdsc::condition_variable *v = execution->cond_map.get(p_cond);
+ cdsc::mutex *m = execution->mutex_map.get(p_mutex);
v->wait(*m);
return 0;
-
}
int pthread_cond_timedwait(pthread_cond_t *p_cond,
pthread_mutex_t *p_mutex, const struct timespec *abstime) {
+// implement cond_timedwait as a noop and let the scheduler decide which thread goes next
ModelExecution *execution = model->get_execution();
- std::condition_variable *v = execution->cond_map.get(p_cond);
- std::mutex *m = execution->mutex_map.get(p_mutex);
- v->wait(*m);
+ if ( !execution->cond_map.contains(p_cond) )
+ pthread_cond_init(p_cond, NULL);
+ if ( !execution->mutex_map.contains(p_mutex) )
+ pthread_mutex_init(p_mutex, NULL);
+
+ cdsc::condition_variable *v = execution->cond_map.get(p_cond);
+ cdsc::mutex *m = execution->mutex_map.get(p_mutex);
+
+ model->switch_to_master(new ModelAction(NOOP, std::memory_order_seq_cst, v, NULL));
+// v->wait(*m);
+// printf("timed_wait called\n");
return 0;
}
int pthread_cond_signal(pthread_cond_t *p_cond) {
// notify only one blocked thread
ModelExecution *execution = model->get_execution();
- std::condition_variable *v = execution->cond_map.get(p_cond);
+ if ( !execution->cond_map.contains(p_cond) )
+ pthread_cond_init(p_cond, NULL);
+
+ cdsc::condition_variable *v = execution->cond_map.get(p_cond);
v->notify_one();
return 0;
}
+
+void pthread_cleanup_push(void (*routine)(void*), void *arg ) {
+ printf("pthrea cleanup push called\n");
+}
+
+int pthread_once (pthread_once_t *__once_control,
+ void (*__init_routine)) {
+ printf("pthread once is called\n");
+}
+
+
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