3 * @brief main and its helper functions, signal handling and cleanup functions
6 // --- Custom headers --- //
13 #include "bbb_pin_defines.h"
15 // --- Standard headers --- //
16 #include <syslog.h> // for system logging
17 #include <signal.h> // for signal handling
19 // --- Variable definitions --- //
20 Options g_options; // options passed to program through command line arguments
22 // --- Function definitions --- //
25 * Parse command line arguments, initialise g_options
26 * @param argc - Number of arguments
27 * @param argv - Array of argument strings
29 void ParseArguments(int argc, char ** argv)
31 // horrible horrible hacks
32 g_options.argc = argc;
33 g_options.argv = argv;
35 g_options.program = argv[0]; // program name
36 g_options.verbosity = LOGDEBUG; // default log level
37 gettimeofday(&(g_options.start_time), NULL); // Start time
38 g_options.adc_device_path = ADC_DEVICE_PATH;
39 Log(LOGDEBUG, "Called as %s with %d arguments.", g_options.program, argc);
41 for (int i = 1; i < argc; ++i)
43 if (argv[i][0] != '-')
44 Fatal("Unexpected argv[%d] - %s", i, argv[i]);
46 if (i+1 >= argc || argv[i+1][0] == '-')
47 Fatal("No argument following switch %s", argv[i]);
49 if (strlen(argv[i]) > 2)
50 Fatal("Human readable switches are not supported.");
55 g_options.adc_device_path = argv[i+1];
56 Log(LOGINFO, "ADC Device Path: %s", argv[i+1]);
60 Fatal("Unrecognised switch %s", argv[i]);
68 * @param signal - The signal number
70 //TODO: Something that gets massively annoying with threads is that you can't predict which one gets the signal
71 // There are ways to deal with this, but I can't remember them
72 // Probably sufficient to just call Thread_QuitProgram here
73 void SignalHandler(int signal)
75 // At the moment just always exit.
76 // Call `exit` so that Cleanup will be called to... clean up.
77 Log(LOGWARN, "Got signal %d (%s). Exiting.", signal, strsignal(signal));
83 * Cleanup before the program exits
87 Log(LOGDEBUG, "Begin cleanup.");
88 Log(LOGDEBUG, "Finish cleanup.");
93 * Main entry point; start worker threads, setup signal handling, wait for threads to exit, exit
94 * @param argc - Num args
96 * @returns 0 on success, error code on failure
97 * NOTE: NEVER USE exit(3)! Instead call Thread_QuitProgram
99 int main(int argc, char ** argv)
101 // Open log before calling ParseArguments (since ParseArguments may call the Log functions)
102 openlog("mctxserv", LOG_PID | LOG_PERROR, LOG_USER);
103 Log(LOGINFO, "Server started");
105 ParseArguments(argc, argv);
107 //Open the system log
110 //TODO: Make this work
112 int signals[] = {SIGINT, SIGSEGV, SIGTERM};
113 for (int i = 0; i < sizeof(signals)/sizeof(int); ++i)
115 signal(signals[i], SignalHandler);
121 //Sensor_StartAll("test");
122 //Actuator_StartAll("test");
124 if ((ret = Control_SetMode(CONTROL_START, "test")) != NULL)
125 Fatal("Control_SetMode failed with '%s'", ret);
127 // run request thread in the main thread
128 FCGI_RequestLoop(NULL);
130 if ((ret = Control_SetMode(CONTROL_STOP, "test")) != NULL)
131 Fatal("Control_SetMode failed with '%s'", ret);
133 //Actuator_StopAll();