3 * @brief main and its helper functions, signal handling and cleanup functions
6 // --- Custom headers --- //
12 #include "bbb_pin_defines.h"
14 // --- Standard headers --- //
15 #include <syslog.h> // for system logging
16 #include <signal.h> // for signal handling
18 // --- Variable definitions --- //
19 Options g_options; // options passed to program through command line arguments
21 // --- Function definitions --- //
24 * Parse command line arguments, initialise g_options
25 * @param argc - Number of arguments
26 * @param argv - Array of argument strings
28 void ParseArguments(int argc, char ** argv)
30 // horrible horrible hacks
31 g_options.argc = argc;
32 g_options.argv = argv;
34 g_options.program = argv[0]; // program name
35 g_options.verbosity = LOGDEBUG; // default log level
36 gettimeofday(&(g_options.start_time), NULL); // Start time
37 g_options.adc_device_path = ADC_DEVICE_PATH;
38 Log(LOGDEBUG, "Called as %s with %d arguments.", g_options.program, argc);
40 for (int i = 1; i < argc; ++i)
42 if (argv[i][0] != '-')
43 Fatal("Unexpected argv[%d] - %s", i, argv[i]);
45 if (i+1 >= argc || argv[i+1][0] == '-')
46 Fatal("No argument following switch %s", argv[i]);
48 if (strlen(argv[i]) > 2)
49 Fatal("Human readable switches are not supported.");
54 g_options.adc_device_path = argv[i+1];
55 Log(LOGINFO, "ADC Device Path: %s", argv[i+1]);
59 Fatal("Unrecognised switch %s", argv[i]);
67 * @param signal - The signal number
69 //TODO: Something that gets massively annoying with threads is that you can't predict which one gets the signal
70 // There are ways to deal with this, but I can't remember them
71 // Probably sufficient to just call Thread_QuitProgram here
72 void SignalHandler(int signal)
74 // At the moment just always exit.
75 // Call `exit` so that Cleanup will be called to... clean up.
76 Log(LOGWARN, "Got signal %d (%s). Exiting.", signal, strsignal(signal));
82 * Cleanup before the program exits
86 Log(LOGDEBUG, "Begin cleanup.");
87 Log(LOGDEBUG, "Finish cleanup.");
92 * Main entry point; start worker threads, setup signal handling, wait for threads to exit, exit
93 * @param argc - Num args
95 * @returns 0 on success, error code on failure
96 * NOTE: NEVER USE exit(3)! Instead call Thread_QuitProgram
98 int main(int argc, char ** argv)
100 // Open log before calling ParseArguments (since ParseArguments may call the Log functions)
101 openlog("mctxserv", LOG_PID | LOG_PERROR, LOG_USER);
102 Log(LOGINFO, "Server started");
104 ParseArguments(argc, argv);
106 //Open the system log
109 //TODO: Make this work
111 int signals[] = {SIGINT, SIGSEGV, SIGTERM};
112 for (int i = 0; i < sizeof(signals)/sizeof(int); ++i)
114 signal(signals[i], SignalHandler);
120 //Sensor_StartAll("test");
121 //Actuator_StartAll("test");
123 if ((ret = Control_SetMode(CONTROL_START, "test")) != NULL)
124 Fatal("Control_SetMode failed with '%s'", ret);
126 // run request thread in the main thread
127 FCGI_RequestLoop(NULL);
129 if ((ret = Control_SetMode(CONTROL_STOP, "test")) != NULL)
130 Fatal("Control_SetMode failed with '%s'", ret);
132 //Actuator_StopAll();