/**
* @file main.c
- * @purpose Entry point to the program, starts threads, handles cleanup on program exit
+ * @brief main and its helper functions, signal handling and cleanup functions
*/
-#define _POSIX_C_SOURCE 200809L // For strsignal to work
+// --- Custom headers --- //
+#include "common.h"
+#include "options.h"
+#include "sensor.h"
// --- Standard headers --- //
-#include <stdlib.h>
-#include <stdio.h>
#include <signal.h> // for signal handling
-#include <string.h> // string functions
-#include <pthread.h>
-
-// --- Custom headers --- //
-#include "log.h"
-#include "options.h"
// --- Variable definitions --- //
Options g_options; // options passed to program through command line arguments
// --- Function definitions --- //
/**
- * @funct ParseArguments
- * @purpose Parse command line arguments, set up an options variable
- * @param argc - Num args
- * @param argv - Array of args
- * @param opts - Pointer to options. &g_options
+ * Parse command line arguments, initialise g_options
+ * @param argc - Number of arguments
+ * @param argv - Array of argument strings
*/
-void ParseArguments(int argc, char ** argv, Options * opts)
+void ParseArguments(int argc, char ** argv)
{
- opts->program = argv[0]; // program name
- opts->verbosity = LOGDEBUG; // default log level
- Log(LOGDEBUG, "ParseArguments", "Called as %s with %d arguments.", opts->program, argc);
+ g_options.program = argv[0]; // program name
+ g_options.verbosity = LOGDEBUG; // default log level
+ gettimeofday(&(g_options.start_time), NULL); // Start time
+ Log(LOGDEBUG, "Called as %s with %d arguments.", g_options.program, argc);
}
/**
- * @funct SignalHandler
- * @purpose Handle signals
- * @param sig - The signal
+ * Handle a signal
+ * @param signal - The signal number
*/
-void SignalHandler(int sig)
+//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, "SignalHandler", "Got signal %d (%s). Exiting.", sig, strsignal(sig));
- exit(sig);
+ Log(LOGWARN, "Got signal %d (%s). Exiting.", signal, strsignal(signal));
+ Thread_QuitProgram(false);
+ //exit(signal);
}
/**
- * @funct Cleanup
- * @purpose Called when program exits
+ * Cleanup before the program exits
*/
void Cleanup()
{
- Log(LOGDEBUG, "Cleanup", "Begin cleanup.");
- Log(LOGDEBUG, "Cleanup", "Finish cleanup.");
+ Log(LOGDEBUG, "Begin cleanup.");
+ Log(LOGDEBUG, "Finish cleanup.");
}
/**
- * @funct main
- * @purpose Main entry point; start worker threads, setup signal handling, wait for threads to exit, exit
+ * Main entry point; start worker threads, setup signal handling, wait for threads to exit, exit
* @param argc - Num args
* @param argv - Args
* @returns 0 on success, error code on failure
+ * NOTE: NEVER USE exit(3)! Instead call Thread_QuitProgram
*/
int main(int argc, char ** argv)
{
+ ParseArguments(argc, argv);
+
+ // signal handler
+ //TODO: Make this work
+ /*
+ int signals[] = {SIGINT, SIGSEGV, SIGTERM};
+ for (int i = 0; i < sizeof(signals)/sizeof(int); ++i)
+ {
+ signal(signals[i], SignalHandler);
+ }
+ */
+ Sensor_Spawn();
+
+ // run request thread in the main thread
+ FCGI_RequestLoop(NULL);
+
+ // Join the dark side, Luke
+ // *cough*
+ // Join the sensor threads
+ Sensor_Join();
+ Cleanup();
return 0;
}