-/*
-This file is part of libmspframework
-Copyright © 2006 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-#include <signal.h>
-#include <iostream>
-#include "application.h"
-#include "error.h"
-
-using namespace std;
-
-namespace Msp {
-
-Poller::Slot &Application::add_pollable(Pollable *obj, short events)
-{
- if(!poller_)
- poller_=new Poller;
-
- Poller::Slot &slot=poller_->add_pollable(obj, events);
- // Interrupt a possible poll in progress
-#ifndef WIN32 //XXX
- pthread_kill(main_tid, SIGALRM);
-#endif
- return slot;
-}
-
-EventManager::Event &Application::create_event()
-{
- if(!ev_mgr_)
- ev_mgr_=new EventManager(*this);
-
- return ev_mgr_->create_event();
-}
-
-Application::~Application()
-{
- if(poller_)
- delete poller_;
- if(ev_mgr_)
- delete ev_mgr_;
-}
-
-/**
-Constructs an instance of the registered application class and runs it. If the
-application throws a UsageError, the static usage() function is called.
-
-This function can only be called once. The global main() function provided by
-the library normally does it automatically at program startup.
-*/
-int Application::run(int argc, char **argv)
-{
- static bool called=false;
- if(called)
- {
- cerr<<"Trying to call Application::run_app twice!\n";
- return 125;
- }
- called=true;
-
- if(!reg_app_)
- {
- cerr<<"Trying to run with no application class registered!\n";
- return 126;
- }
-
-#ifndef WIN32 //XXX
- signal(SIGALRM, &sigalrm_);
-#endif
-
- try
- {
- app_=reg_app_->create_app(argc, argv);
- }
- catch(const UsageError &e)
- {
- reg_app_->usage(argv[0], e.get_brief());
- return 1;
- }
-
- int result=app_->main();
- delete app_;
- return result;
-}
-
-/**
-Prints a message describing the usage of the application. The default version
-will blame the programmer for being lazy.
-
-@param argv0 The value of argv[0], to be used in the message
-@param brief Whether to print a brief or long usage message
-*/
-void Application::usage(const char *, bool)
-{
- cerr<<"The programmer was lazy and didn't write a usage() function for this application.\n";
-}
-
-Application::Application():
- exit_code(0),
- tick_mode_(IDLE),
- poller_(0),
- ev_mgr_(0)
-#ifndef WIN32
- //XXX Figure out how to get the current thread on win32
- ,main_tid(pthread_self())
-#endif
-{ }
-
-/**
-Default main loop. Calls tick() periodically if do_ticks is true, otherwise
-just sleeps. A custom main loop should monitor the done member variable and
-return exit_code.
-*/
-int Application::main()
-{
- done=false;
- while(!done)
- {
- if(tick_mode_==IDLE)
- {
- if(poller_)
- poller_->poll(0);
- tick();
-#ifdef WIN32
- Sleep(0);
-#else
- sched_yield();
-#endif
- }
- else
- {
- if(poller_)
- poller_->poll(-1);
- else
- {
-#ifdef WIN32
- Sleep(1);
-#else
- timespec ts={1000,0};
- nanosleep(&ts, 0);
-#endif
- }
- if(tick_mode_!=NONE)
- tick();
- }
- }
-
- return exit_code;
-}
-
-/**
-Sets the specified signal to be delivered to the sighandler member function.
-*/
-void Application::catch_signal(int s)
-{
- signal(s, &sighandler_);
-}
-
-void Application::set_tick_mode(TickMode t)
-{
- tick_mode_=t;
-#ifndef WIN32 //XXX
- pthread_kill(main_tid, SIGALRM);
-#endif
-}
-
-/**
-Causes the application to exit gracefully with the given exit code.
-*/
-void Application::exit(int c)
-{
- done=true;
- exit_code=c;
-#ifndef WIN32 //XXX
- pthread_kill(main_tid, SIGALRM);
-#endif
-}
-
-void Application::sighandler_(int s)
-{
- app_->sighandler(s);
-}
-
-Application::RegBase::RegBase()
-{
- if(reg_app_)
- {
- cerr<<"Warning: registering the application twice\n";
- delete reg_app_;
- }
-
- reg_app_=this;
-}
-
-Application *Application::app_=0;
-Application::RegBase *Application::reg_app_=0;
-
-} // namespace Msp