2 * @brief Entry point for the model checker.
14 /* global "model" object */
17 #include "snapshot-interface.h"
20 static void param_defaults(struct model_params *params)
22 params->verbose = !!DBG_ENABLED();
23 params->uninitvalue = 0;
24 params->maxexecutions = 10;
25 params->nofork = false;
28 static void print_usage(const char *program_name, struct model_params *params)
30 ModelVector<TraceAnalysis *> * registeredanalysis=getRegisteredTraceAnalysis();
31 /* Reset defaults before printing */
32 param_defaults(params);
35 "Copyright (c) 2013 Regents of the University of California. All rights reserved.\n"
36 "Distributed under the GPLv2\n"
37 "Written by Brian Norris and Brian Demsky\n"
39 "Usage: %s [MODEL-CHECKER OPTIONS] -- [PROGRAM ARGS]\n"
41 "MODEL-CHECKER OPTIONS can be any of the model-checker options listed below. Arguments\n"
42 "provided after the `--' (the PROGRAM ARGS) are passed to the user program.\n"
44 "Model-checker options:\n"
45 "-h, --help Display this help message and exit\n"
46 "-v[NUM], --verbose[=NUM] Print verbose execution information. NUM is optional:\n"
47 " 0 is quiet; 1 shows valid executions; 2 is noisy;\n"
50 "-u, --uninitialized=VALUE Return VALUE any load which may read from an\n"
51 " uninitialized atomic.\n"
53 "-t, --analysis=NAME Use Analysis Plugin.\n"
54 "-o, --options=NAME Option for previous analysis plugin. \n"
55 "-x, --maxexec=NUM Maximum number of executions.\n"
57 " -o help for a list of options\n"
59 " -- Program arguments follow.\n\n",
63 params->maxexecutions);
64 model_print("Analysis plugins:\n");
65 for(unsigned int i=0;i<registeredanalysis->size();i++) {
66 TraceAnalysis * analysis=(*registeredanalysis)[i];
67 model_print("%s\n", analysis->name());
72 bool install_plugin(char * name) {
73 ModelVector<TraceAnalysis *> * registeredanalysis=getRegisteredTraceAnalysis();
74 ModelVector<TraceAnalysis *> * installedanalysis=getInstalledTraceAnalysis();
76 for(unsigned int i=0;i<registeredanalysis->size();i++) {
77 TraceAnalysis * analysis=(*registeredanalysis)[i];
78 if (strcmp(name, analysis->name())==0) {
79 installedanalysis->push_back(analysis);
83 model_print("Analysis %s Not Found\n", name);
87 static void parse_options(struct model_params *params, int argc, char **argv)
89 const char *shortopts = "hnt:o:u:x:v::";
90 const struct option longopts[] = {
91 {"help", no_argument, NULL, 'h'},
92 {"verbose", optional_argument, NULL, 'v'},
93 {"uninitialized", required_argument, NULL, 'u'},
94 {"analysis", required_argument, NULL, 't'},
95 {"options", required_argument, NULL, 'o'},
96 {"maxexecutions", required_argument, NULL, 'x'},
97 {0, 0, 0, 0} /* Terminator */
101 while (!error && (opt = getopt_long(argc, argv, shortopts, longopts, &longindex)) != -1) {
104 print_usage(argv[0], params);
107 params->nofork = true;
110 params->maxexecutions = atoi(optarg);
113 params->verbose = optarg ? atoi(optarg) : 1;
116 params->uninitvalue = atoi(optarg);
119 if (install_plugin(optarg))
124 ModelVector<TraceAnalysis *> * analyses = getInstalledTraceAnalysis();
125 if ( analyses->size() == 0 || (*analyses)[analyses->size()-1]->option(optarg))
135 /* Pass remaining arguments to user program */
136 params->argc = argc - (optind - 1);
137 params->argv = argv + (optind - 1);
139 /* Reset program name */
140 params->argv[0] = argv[0];
142 /* Reset (global) optind for potential use by user program */
146 print_usage(argv[0], params);
152 static void install_trace_analyses(ModelExecution *execution)
154 ModelVector<TraceAnalysis *> * installedanalysis=getInstalledTraceAnalysis();
155 for(unsigned int i=0;i<installedanalysis->size();i++) {
156 TraceAnalysis * ta=(*installedanalysis)[i];
157 ta->setExecution(execution);
158 model->add_trace_analysis(ta);
159 /** Call the installation event for each installed plugin */
160 ta->actionAtInstallation();
164 /** The model_main function contains the main model checking loop. */
165 static void model_main()
167 modelchecker_started = true;
176 * Main function. Just initializes snapshotting library and the
177 * snapshotting library calls the model_main function.
179 int main(int argc, char **argv)
185 * If this printf statement is removed, CDSChecker will fail on an
186 * assert on some versions of glibc. The first time printf is
187 * called, it allocated internal buffers. We can't easily snapshot
188 * libc since we also use it.
191 printf("CDSChecker\n"
192 "Copyright (c) 2013 Regents of the University of California. All rights reserved.\n"
193 "Distributed under the GPLv2\n"
194 "Written by Brian Norris and Brian Demsky\n\n");
196 /* Configure output redirection for the model-checker */
199 //Initialize snapshotting library
201 snapshot_system_init(10000, 1024, 1024, 40000);
203 struct model_params params;
205 param_defaults(¶ms);
207 parse_options(¶ms, main_argc, main_argv);
209 //Initialize race detector
212 snapshot_stack_init();
215 model = new ModelChecker();
217 model->setParams(params);
218 install_trace_analyses(model->get_execution());
220 startExecution(&model_main);