X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=main.cc;h=590a41d27f33c07118592912fc73f582a4624050;hb=c522e1dd1ccc11827ac2fce444764081dca25746;hp=e49acfcf18566959c21e5e616345be75b215b377;hpb=936b81aa71ea88fb0336594916ff4820c15ad9a5;p=c11tester.git diff --git a/main.cc b/main.cc index e49acfcf..590a41d2 100644 --- a/main.cc +++ b/main.cc @@ -1,82 +1,214 @@ -#include "libthreads.h" +/** @file main.cc + * @brief Entry point for the model checker. + */ + +#include +#include +#include + #include "common.h" -#include "threads.h" +#include "output.h" + +#include "datarace.h" /* global "model" object */ #include "model.h" -#include "snapshot.h" +#include "params.h" #include "snapshot-interface.h" +#include "plugins.h" -/* - * Return 1 if found next thread, 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); - } - 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); +void param_defaults(struct model_params *params) +{ + params->verbose = !!DBG_ENABLED(); + params->uninitvalue = 0; + params->maxexecutions = 10; + params->nofork = false; + params->threadsnocleanup = 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" +#ifdef TLS + "-d Don't allow threads to cleanup\n" +#endif + " -- 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()); + } + exit(EXIT_SUCCESS); } -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; } -void real_main() { - thrd_t user_thread; - ucontext_t main_context; - - //Create the singleton snapshotStack object - snapshotObject = new snapshotStack(); - - model = new ModelChecker(); - - if (getcontext(&main_context)) - return; - - model->set_system_context(&main_context); - - do { - /* Start user program */ - model->add_thread(new Thread(&user_thread, &user_main, NULL)); - - /* Wait for all threads to complete */ - thread_wait_finish(); - } while (model->next_execution()); - - delete model; - - DEBUG("Exiting\n"); +static void parse_options(struct model_params *params, int argc, char **argv) +{ + const char *shortopts = "hdnt: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 'd': + params->threadsnocleanup = true; + 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; + } + } + + /* Pass remaining arguments to user program */ + params->argc = argc - (optind - 1); + params->argv = argv + (optind - 1); + + /* Reset program name */ + params->argv[0] = argv[0]; + + /* Reset (global) optind for potential use by user program */ + optind = 1; + + if (error) + print_usage(argv[0], params); } -int main_numargs; -char ** main_args; +int main_argc; +char **main_argv; -/* - * Main system function +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(); + } +} + +/** + * Main function. Just initializes snapshotting library and the + * 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, C11Tester 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("C11Tester\n" + "Copyright (c) 2013 and 2019 Regents of the University of California. All rights reserved.\n" + "Distributed under the GPLv2\n" + "Written by Weiyu Luo, Brian Norris, and Brian Demsky\n\n"); + + + //Initialize snapshotting library and model checker object + if (!model) { + snapshot_system_init(10000, 1024, 1024, 40000); + model = new ModelChecker(); + model->startChecker(); + } + + /* Configure output redirection for the model-checker */ + redirect_output(); + + register_plugins(); + + //Parse command line options + model_params *params = model->getParams(); + parse_options(params, main_argc, main_argv); + + + install_trace_analyses(model->get_execution()); - /* Let's jump in quickly and start running stuff */ - initSnapShotLibrary(10000 /*int numbackingpages*/, 1024 /*unsigned int numsnapshots*/, 1024 /*unsigned int nummemoryregions*/ , 1000 /*int numheappages*/, &real_main /*MyFuncPtr entryPoint*/); + model->startMainThread(); + DEBUG("Exiting\n"); }