#include "model.h"
#include "action.h"
-#include "nodestack.h"
#include "schedule.h"
#include "snapshot-interface.h"
#include "common.h"
#include "output.h"
#include "traceanalysis.h"
#include "execution.h"
+#include "history.h"
#include "bugmessage.h"
+#include "params.h"
ModelChecker *model = NULL;
-bool modelchecker_started = false;
/** Wrapper to run the user's main function, with appropriate arguments */
void user_main_wrapper(void *)
params(),
restart_flag(false),
scheduler(new Scheduler()),
- node_stack(new NodeStack()),
- execution(new ModelExecution(this, scheduler, node_stack)),
+ history(new ModelHistory()),
+ execution(new ModelExecution(this, scheduler)),
execution_number(1),
trace_analyses(),
inspect_plugin(NULL)
{
memset(&stats,0,sizeof(struct execution_stats));
- init_thread = new Thread(execution->get_next_id(), (thrd_t *) malloc(sizeof(thrd_t)), &user_main_wrapper, NULL, NULL); // L: user_main_wrapper passes the user program
+ init_thread = new Thread(execution->get_next_id(), (thrd_t *) model_malloc(sizeof(thrd_t)), &user_main_wrapper, NULL, NULL);
+#ifdef TLS
+ init_thread->setTLS((char *)get_tls_addr());
+#endif
execution->add_thread(init_thread);
scheduler->set_current_thread(init_thread);
+ execution->setParams(¶ms);
+ param_defaults(¶ms);
+ initRaceDetector();
}
/** @brief Destructor */
ModelChecker::~ModelChecker()
{
- delete node_stack;
delete scheduler;
}
/** Method to set parameters */
-void ModelChecker::setParams(struct model_params params) {
- this->params = params;
- execution->setParams(¶ms);
+model_params * ModelChecker::getParams() {
+ return ¶ms;
}
/**
* Have we completed exploring the preselected path? Then let the
* scheduler decide
*/
- return scheduler->select_next_thread(node_stack->get_head());
+ return scheduler->select_next_thread();
}
/**
bugs->size(),
bugs->size() > 1 ? "s" : "");
for (unsigned int i = 0;i < bugs->size();i++)
- (*bugs)[i]->print();
+ (*bugs)[i] -> print();
}
/**
*/
void ModelChecker::record_stats()
{
- stats.num_total++;
+ stats.num_total ++;
if (!execution->isfeasibleprefix())
- stats.num_infeasible++;
+ stats.num_infeasible ++;
else if (execution->have_bug_reports())
- stats.num_buggy_executions++;
+ stats.num_buggy_executions ++;
else if (execution->is_complete_execution())
- stats.num_complete++;
+ stats.num_complete ++;
else {
- stats.num_redundant++;
+ stats.num_redundant ++;
/**
* @todo We can violate this ASSERT() when fairness/sleep sets
if (execution->is_deadlocked())
assert_bug("Deadlock detected");
- checkDataRaces();
run_trace_analyses();
}
return true;
}
// test code
- execution_number++;
+ execution_number ++;
reset_to_initial_state();
+ history->set_new_exec_flag();
return false;
}
/** @brief Run trace analyses on complete trace */
void ModelChecker::run_trace_analyses() {
- for (unsigned int i = 0;i < trace_analyses.size();i++)
- trace_analyses[i]->analyze(execution->get_action_trace());
+ for (unsigned int i = 0;i < trace_analyses.size();i ++)
+ trace_analyses[i] -> analyze(execution->get_action_trace());
}
/**
*/
uint64_t ModelChecker::switch_to_master(ModelAction *act)
{
+ if (modellock) {
+ static bool fork_message_printed = false;
+
+ if (!fork_message_printed) {
+ model_print("Fork handler or dead thread trying to call into model checker...\n");
+ fork_message_printed = true;
+ }
+ delete act;
+ return 0;
+ }
DBG();
Thread *old = thread_current();
scheduler->set_current_thread(NULL);
return old->get_return_value();
}
+static void runChecker() {
+ model->run();
+ delete model;
+}
+
+void ModelChecker::startChecker() {
+ startExecution(get_system_context(), runChecker);
+ snapshot_stack_init();
+ snapshot_record(0);
+}
+
bool ModelChecker::should_terminate_execution()
{
/* Infeasible -> don't take any more steps */
if (execution->is_infeasible())
return true;
- else if (execution->isfeasibleprefix() && execution->have_bug_reports()) {
+ else if (execution->isfeasibleprefix() && execution->have_fatal_bug_reports()) {
execution->set_assert();
return true;
+ } else if (execution->isFinished()) {
+ return true;
}
return false;
}
execution_number = 1;
}
+void ModelChecker::startMainThread() {
+ init_thread->set_state(THREAD_RUNNING);
+ scheduler->set_current_thread(init_thread);
+ main_thread_startup();
+}
+
/** @brief Run ModelChecker for the user program */
void ModelChecker::run()
{
* thread which just took a step--plus the first step
* for any newly-created thread
*/
-
for (unsigned int i = 0;i < get_num_threads();i++) {
thread_id_t tid = int_to_id(i);
Thread *thr = get_thread(tid);
- if (!thr->is_model_thread() && !thr->is_complete() && !thr->get_pending()) {
+ if (!thr->is_model_thread() && !thr->is_complete() && (!thr->get_pending())) {
switch_from_master(thr); // L: context swapped, and action type of thr changed.
if (thr->is_waiting_on(thr))
assert_bug("Deadlock detected (thread %u)", i);
/* Have the trace analyses dump their output. */
for (unsigned int i = 0;i < trace_analyses.size();i++)
trace_analyses[i]->finish();
+
+ /* unlink tmp file created by last child process */
+ char filename[256];
+ snprintf_(filename, sizeof(filename), "C11FuzzerTmp%d", getpid());
+ unlink(filename);
}