X-Git-Url: http://plrg.eecs.uci.edu/git/?p=c11tester.git;a=blobdiff_plain;f=main.cc;h=df8b8776610a40a83ffc7b04540ccdc400586b70;hp=339b85efd45d427096546cbf8641d3afbb71067f;hb=e9f607873c5e57a4a1823772c9b8606007b5a836;hpb=dd0190cef49ef760f8d86a6e92dd6eeb07197854 diff --git a/main.cc b/main.cc index 339b85ef..df8b8776 100644 --- a/main.cc +++ b/main.cc @@ -2,98 +2,216 @@ * @brief Entry point for the model checker. */ -#include "libthreads.h" +#include +#include +#include + #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 * 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;isize();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 * registeredanalysis=getRegisteredTraceAnalysis(); + ModelVector * installedanalysis=getInstalledTraceAnalysis(); - while (!thread_system_next()); + for(unsigned int i=0;isize();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 * 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 * installedanalysis=getInstalledTraceAnalysis(); + for(unsigned int i=0;isize();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); }