X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=server%2Fmain.c;h=a4b7c5a103f0c4bda022bd99bd9fc8cddc983663;hb=75b9743b95672218a61811b03433c0ab6e00ec5c;hp=2ad9dcc694c9354500b1a3feeae439c06475493f;hpb=e5a93abad7700d26b8d7363103593491a3f0a212;p=matches%2FMCTX3420.git diff --git a/server/main.c b/server/main.c index 2ad9dcc..a4b7c5a 100644 --- a/server/main.c +++ b/server/main.c @@ -16,6 +16,14 @@ #include // for system logging #include // for signal handling + +#ifdef REALTIME_VERSION +#include +#include +#include +#include +#endif //REALTIME_VERSION + // --- Variable definitions --- // Options g_options; // options passed to program through command line arguments @@ -28,16 +36,20 @@ Options g_options; // options passed to program through command line arguments */ void ParseArguments(int argc, char ** argv) { - // horrible horrible hacks - g_options.argc = argc; - g_options.argv = argv; - g_options.program = argv[0]; // program name g_options.verbosity = LOGDEBUG; // default log level - gettimeofday(&(g_options.start_time), NULL); // Start time - g_options.adc_device_path = ADC_DEVICE_PATH; - Log(LOGDEBUG, "Called as %s with %d arguments.", g_options.program, argc); + // Set the main directory + //if (getcwd(g_options.root_dir, sizeof(g_options.root_dir)) == NULL) + // Fatal("Couldn't get current working directory - %s", strerror(errno)); + + clock_gettime(CLOCK_MONOTONIC, &(g_options.start_time)); // Start time + + g_options.auth_method = AUTH_NONE; // Don't use authentication + g_options.auth_uri = ""; // + g_options.ldap_base_dn = ""; + g_options.experiment_dir = "."; + for (int i = 1; i < argc; ++i) { if (argv[i][0] != '-') @@ -49,34 +61,59 @@ void ParseArguments(int argc, char ** argv) if (strlen(argv[i]) > 2) Fatal("Human readable switches are not supported."); + char * end = NULL; switch (argv[i][1]) { - case 'a': - g_options.adc_device_path = argv[i+1]; - Log(LOGINFO, "ADC Device Path: %s", argv[i+1]); - ++i; + // Set program verbosity + case 'v': + g_options.verbosity = strtol(argv[++i], &end, 10); + break; + // Enable/Disable pin test + case 'p': + g_options.enable_pin = !(strtol(argv[++i], &end, 10)); + break; + // LDAP URI + case 'A': + g_options.auth_uri = argv[++i]; + break; + // LDAP DN + case 'd': + g_options.ldap_base_dn = argv[++i]; + break; + case 'e': + // Experiments directory + g_options.experiment_dir = argv[++i]; break; default: Fatal("Unrecognised switch %s", argv[i]); break; } + + if (end != NULL && *end != '\0') + Fatal("argv[%d] -%c requires an integer (got \"%s\" instead)", i-1, argv[i-1][0], argv[i]); } -} -/** - * Handle a signal - * @param signal - The signal number - */ -//TODO: Something that gets massively annoying with threads is that you can't predict which one gets the signal -// There are ways to deal with this, but I can't remember them -// Probably sufficient to just call Thread_QuitProgram here -void SignalHandler(int signal) -{ - // At the moment just always exit. - // Call `exit` so that Cleanup will be called to... clean up. - Log(LOGWARN, "Got signal %d (%s). Exiting.", signal, strsignal(signal)); + Log(LOGDEBUG, "Verbosity: %d", g_options.verbosity); + Log(LOGDEBUG, "Pin Module Enabled: %d", g_options.enable_pin); + Log(LOGDEBUG, "Auth URI: %s", g_options.auth_uri); + Log(LOGDEBUG, "LDAP Base DN: %s", g_options.ldap_base_dn); + //Log(LOGDEBUG, "Root directory: %s", g_options.root_dir); + Log(LOGDEBUG, "Experiment directory: %s", g_options.experiment_dir); - //exit(signal); + if (!DirExists(g_options.experiment_dir)) + { + Fatal("Experiment directory '%s' does not exist.", g_options.experiment_dir); + } + + if (g_options.auth_uri[0] != '\0') + { + //HACK... + if (PathExists(g_options.auth_uri)) + g_options.auth_method = AUTH_SHADOW; + else + g_options.auth_method = AUTH_LDAP; + } + } /** @@ -85,10 +122,43 @@ void SignalHandler(int signal) void Cleanup() { Log(LOGDEBUG, "Begin cleanup."); + Sensor_Cleanup(); + Actuator_Cleanup(); Log(LOGDEBUG, "Finish cleanup."); +} + + +#ifdef REALTIME_VERSION + +#define MAX_SAFE_STACK (8*1024) +#define NSEC_PER_SEC (1000000000) + +void stack_prefault() +{ + unsigned char dummy[MAX_SAFE_STACK]; + memset(dummy, 0, MAX_SAFE_STACK); + return; +} +bool is_realtime() +{ + struct utsname u; + bool crit1 = 0; + bool crit2 = 0; + FILE * f; + uname(&u); + crit1 = (strcasestr(u.version, "PREEMPT RT") != NULL); + if (crit1 && ((f = fopen("/sys/kernel/realtime", "r")) != NULL)) + { + int flag; + crit2 = ((fscanf(f, "%d", &flag) == 1) && (flag == 1)); + fclose(f); + } + return (crit1 && crit2); } +#endif //REALTIME_VERSION + /** * Main entry point; start worker threads, setup signal handling, wait for threads to exit, exit * @param argc - Num args @@ -98,37 +168,54 @@ void Cleanup() */ int main(int argc, char ** argv) { + // Open log before calling ParseArguments (since ParseArguments may call the Log functions) openlog("mctxserv", LOG_PID | LOG_PERROR, LOG_USER); - Log(LOGINFO, "Server started"); - ParseArguments(argc, argv); + ParseArguments(argc, argv); // Setup the g_options structure from program arguments + + Log(LOGINFO, "Server started"); - //Open the system log - // signal handler - //TODO: Make this work - /* - int signals[] = {SIGINT, SIGSEGV, SIGTERM}; - for (int i = 0; i < sizeof(signals)/sizeof(int); ++i) + + #ifdef REALTIME_VERSION + + if (is_realtime()) { - signal(signals[i], SignalHandler); + Log(LOGDEBUG, "Running under realtime kernel"); } - */ - Sensor_Init(); - Actuator_Init(); + else + { + Fatal("Not running under realtime kernel"); + } + struct sched_param param; + param.sched_priority = 49; + if (sched_setscheduler(0, SCHED_FIFO, ¶m) < 0) + Fatal("sched_setscheduler failed - %s", strerror(errno)); + if (mlockall(MCL_CURRENT | MCL_FUTURE) == -1) + Fatal("mlockall failed - %s", strerror(errno)); + stack_prefault(); + #endif //REALTIME_VERSION + + + Pin_Init(); - //Sensor_StartAll("test"); - //Actuator_StartAll("test"); - const char *ret; - if ((ret = Control_SetMode(CONTROL_START, "test")) != NULL) - Fatal("Control_SetMode failed with '%s'", ret); + + // Try and start things + + //const char *ret; + //if ((ret = Control_SetMode(CONTROL_START, "test")) != NULL) + // Fatal("Control_SetMode failed with '%s'", ret); + // run request thread in the main thread FCGI_RequestLoop(NULL); - if ((ret = Control_SetMode(CONTROL_STOP, "test")) != NULL) - Fatal("Control_SetMode failed with '%s'", ret); + + Control_SetMode(CONTROL_STOP, NULL); + //if ((ret = Control_SetMode(CONTROL_STOP, "test")) != NULL) + // Fatal("Control_SetMode failed with '%s'", ret); + //Sensor_StopAll(); //Actuator_StopAll();