* @brief Entry point for the model checker.
*/
-#include "libthreads.h"
+#include <unistd.h>
+#include <getopt.h>
+#include <string.h>
+
#include "common.h"
-#include "threads.h"
+#include "output.h"
#include "datarace.h"
/* global "model" object */
#include "model.h"
+#include "params.h"
#include "snapshot-interface.h"
+#include "plugins.h"
+
+static void param_defaults(struct model_params *params)
+{
+ params->verbose = !!DBG_ENABLED();
+ params->uninitvalue = 0;
+ params->maxexecutions = 10;
+ params->nofork = false;
+}
-/**
- * The thread_system_next function takes the next step in the execution.
- * @return Returns the 1 if there is another step and 0 otherwise.
- */
-static int thread_system_next(void) {
- Thread *curr, *next;
-
- curr = thread_current();
- if (curr) {
- if (curr->get_state() == THREAD_READY) {
- model->check_current_action();
- model->scheduler->add_thread(curr);
- } else if (curr->get_state() == THREAD_RUNNING)
- /* Stopped while running; i.e., completed */
- curr->complete();
- else
- ASSERT(false);
+static void print_usage(const char *program_name, struct model_params *params)
+{
+ ModelVector<TraceAnalysis *> * registeredanalysis=getRegisteredTraceAnalysis();
+ /* Reset defaults before printing */
+ param_defaults(params);
+
+ model_print(
+ "Copyright (c) 2013 Regents of the University of California. All rights reserved.\n"
+ "Distributed under the GPLv2\n"
+ "Written by Brian Norris and Brian Demsky\n"
+ "\n"
+ "Usage: %s [MODEL-CHECKER OPTIONS] -- [PROGRAM ARGS]\n"
+ "\n"
+ "MODEL-CHECKER OPTIONS can be any of the model-checker options listed below. Arguments\n"
+ "provided after the `--' (the PROGRAM ARGS) are passed to the user program.\n"
+ "\n"
+ "Model-checker options:\n"
+ "-h, --help Display this help message and exit\n"
+ "-v[NUM], --verbose[=NUM] Print verbose execution information. NUM is optional:\n"
+ " 0 is quiet; 1 shows valid executions; 2 is noisy;\n"
+ " 3 is noisier.\n"
+ " Default: %d\n"
+ "-u, --uninitialized=VALUE Return VALUE any load which may read from an\n"
+ " uninitialized atomic.\n"
+ " Default: %u\n"
+ "-t, --analysis=NAME Use Analysis Plugin.\n"
+ "-o, --options=NAME Option for previous analysis plugin. \n"
+ "-x, --maxexec=NUM Maximum number of executions.\n"
+ " Default: %u\n"
+ " -o help for a list of options\n"
+ "-n No fork\n"
+ " -- Program arguments follow.\n\n",
+ program_name,
+ params->verbose,
+ params->uninitvalue,
+ params->maxexecutions);
+ model_print("Analysis plugins:\n");
+ for(unsigned int i=0;i<registeredanalysis->size();i++) {
+ TraceAnalysis * analysis=(*registeredanalysis)[i];
+ model_print("%s\n", analysis->name());
}
- next = model->scheduler->next_thread();
- if (next)
- next->set_state(THREAD_RUNNING);
- DEBUG("(%d, %d)\n", curr ? curr->get_id() : -1, next ? next->get_id() : -1);
- if (!next)
- return 1;
- return Thread::swap(model->get_system_context(), next);
+ exit(EXIT_SUCCESS);
}
-/** The thread_wait_finish method runs the current execution until we
- * have no more steps to take.
- */
-static void thread_wait_finish(void) {
- DBG();
+bool install_plugin(char * name) {
+ ModelVector<TraceAnalysis *> * registeredanalysis=getRegisteredTraceAnalysis();
+ ModelVector<TraceAnalysis *> * installedanalysis=getInstalledTraceAnalysis();
- while (!thread_system_next());
+ for(unsigned int i=0;i<registeredanalysis->size();i++) {
+ TraceAnalysis * analysis=(*registeredanalysis)[i];
+ if (strcmp(name, analysis->name())==0) {
+ installedanalysis->push_back(analysis);
+ return false;
+ }
+ }
+ model_print("Analysis %s Not Found\n", name);
+ return true;
}
+static void parse_options(struct model_params *params, int argc, char **argv)
+{
+ const char *shortopts = "hnt:o:u:x:v::";
+ const struct option longopts[] = {
+ {"help", no_argument, NULL, 'h'},
+ {"verbose", optional_argument, NULL, 'v'},
+ {"uninitialized", required_argument, NULL, 'u'},
+ {"analysis", required_argument, NULL, 't'},
+ {"options", required_argument, NULL, 'o'},
+ {"maxexecutions", required_argument, NULL, 'x'},
+ {0, 0, 0, 0} /* Terminator */
+ };
+ int opt, longindex;
+ bool error = false;
+ while (!error && (opt = getopt_long(argc, argv, shortopts, longopts, &longindex)) != -1) {
+ switch (opt) {
+ case 'h':
+ print_usage(argv[0], params);
+ break;
+ case 'n':
+ params->nofork = true;
+ break;
+ case 'x':
+ params->maxexecutions = atoi(optarg);
+ break;
+ case 'v':
+ params->verbose = optarg ? atoi(optarg) : 1;
+ break;
+ case 'u':
+ params->uninitvalue = atoi(optarg);
+ break;
+ case 't':
+ if (install_plugin(optarg))
+ error = true;
+ break;
+ case 'o':
+ {
+ ModelVector<TraceAnalysis *> * analyses = getInstalledTraceAnalysis();
+ if ( analyses->size() == 0 || (*analyses)[analyses->size()-1]->option(optarg))
+ error = true;
+ }
+ break;
+ default: /* '?' */
+ error = true;
+ break;
+ }
+ }
-/** The real_main function contains the main model checking loop. */
-static void real_main() {
- thrd_t user_thread;
- ucontext_t main_context;
+ /* Pass remaining arguments to user program */
+ params->argc = argc - (optind - 1);
+ params->argv = argv + (optind - 1);
- //Initialize race detector
- initRaceDetector();
+ /* Reset program name */
+ params->argv[0] = argv[0];
- //Create the singleton SnapshotStack object
- snapshotObject = new SnapshotStack();
+ /* Reset (global) optind for potential use by user program */
+ optind = 1;
- model = new ModelChecker();
+ if (error)
+ print_usage(argv[0], params);
+}
+
+int main_argc;
+char **main_argv;
+
+static void install_trace_analyses(ModelExecution *execution)
+{
+ ModelVector<TraceAnalysis *> * installedanalysis=getInstalledTraceAnalysis();
+ for(unsigned int i=0;i<installedanalysis->size();i++) {
+ TraceAnalysis * ta=(*installedanalysis)[i];
+ ta->setExecution(execution);
+ model->add_trace_analysis(ta);
+ /** Call the installation event for each installed plugin */
+ ta->actionAtInstallation();
+ }
+}
- if (getcontext(&main_context))
- return;
+/** The model_main function contains the main model checking loop. */
+static void model_main()
+{
+ struct model_params params;
- model->set_system_context(&main_context);
+ param_defaults(¶ms);
+ register_plugins();
- snapshotObject->snapshotStep(0);
+ parse_options(¶ms, main_argc, main_argv);
- do {
- /* Start user program */
- model->add_thread(new Thread(&user_thread, (void (*)(void *)) &user_main, NULL));
+ //Initialize race detector
+ initRaceDetector();
- /* Wait for all threads to complete */
- thread_wait_finish();
- } while (model->next_execution());
+ snapshot_stack_init();
+ if (!model)
+ model = new ModelChecker();
+ model->setParams(params);
+ install_trace_analyses(model->get_execution());
+
+ snapshot_record(0);
+ model->run();
delete model;
DEBUG("Exiting\n");
}
-int main_numargs;
-char ** main_args;
-
/**
* Main function. Just initializes snapshotting library and the
- * snapshotting library calls the real_main function.
+ * snapshotting library calls the model_main function.
*/
-int main(int numargs, char ** args) {
- /* Stash this stuff in case someone wants it eventually */
- main_numargs=numargs;
- main_args=args;
+int main(int argc, char **argv)
+{
+ main_argc = argc;
+ main_argv = argv;
+
+ /*
+ * If this printf statement is removed, CDSChecker will fail on an
+ * assert on some versions of glibc. The first time printf is
+ * called, it allocated internal buffers. We can't easily snapshot
+ * libc since we also use it.
+ */
+
+ printf("CDSChecker\n"
+ "Copyright (c) 2013 Regents of the University of California. All rights reserved.\n"
+ "Distributed under the GPLv2\n"
+ "Written by Brian Norris and Brian Demsky\n\n");
+
+ /* Configure output redirection for the model-checker */
+ redirect_output();
/* Let's jump in quickly and start running stuff */
- initSnapShotLibrary(10000, 1024, 1024, 1000, &real_main);
+ snapshot_system_init(10000, 1024, 1024, 40000, &model_main);
}
projects / c11tester.git / blobdiff