X-Git-Url: http://git.tdb.fi/?p=libs%2Fcore.git;a=blobdiff_plain;f=source%2Fcore%2Fapplication.cpp;h=bcb7e3de49e2cb0b3058844f2559f336cfdc5a50;hp=01bb558e279255fbb5f83676c61886966f9624b2;hb=20e1beb546c26eae3b1a61ab2051108a7dca221f;hpb=5000b0101346ee4b8c4e01e0123b94f000b18e8b

diff --git a/source/core/application.cpp b/source/core/application.cpp
index 01bb558..bcb7e3d 100644
--- a/source/core/application.cpp
+++ b/source/core/application.cpp
@@ -1,46 +1,24 @@
-/*
-This file is part of libmspframework
+/* $Id$
+
+This file is part of libmspcore
 Copyright © 2006 Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
+
 #include <signal.h>
 #include <iostream>
+#include <typeinfo>
+#include "../debug/backtrace.h"
+#include "../debug/demangle.h"
+#include "../time/units.h"
+#include "../time/utils.h"
 #include "application.h"
-#include "error.h"
+#include "except.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.
@@ -48,7 +26,7 @@ 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)
+int Application::run(int argc, char **argv, void *data)
 {
 	static bool called=false;
 	if(called)
@@ -64,87 +42,103 @@ int Application::run(int argc, char **argv)
 		return 126;
 	}
 
-#ifndef WIN32 //XXX
-	signal(SIGALRM, &sigalrm_);
-#endif
-	
+	data_=data;
+
 	try
 	{
-		app_=reg_app_->create_app(argc, argv);
+		try
+		{
+			app_=reg_app_->create_app(argc, argv);
+		}
+		catch(const UsageError &e)
+		{
+			reg_app_->usage(e.what(), argv[0], e.get_brief());
+			return 1;
+		}
+
+		int result=app_->main();
+		delete app_;
+		return result;
 	}
-	catch(const UsageError &e)
+	catch(const exception &e)
 	{
-		reg_app_->usage(argv[0], e.get_brief());
-		return 1;
-	}
+		cerr<<"An uncaught exception occurred.\n";
+		cerr<<"  type:   "<<Debug::demangle(typeid(e).name())<<'\n';
+		cerr<<"  what(): "<<e.what()<<'\n';
 
-	int result=app_->main();
-	delete app_;
-	return result;
+		const Exception *exc=dynamic_cast<const Exception *>(&e);
+		if(exc && !exc->get_backtrace().get_frames().empty())
+		{
+			cerr<<"  backtrace:\n";
+			const Debug::Backtrace::FrameSeq &frames=exc->get_backtrace().get_frames();
+			for(Debug::Backtrace::FrameSeq::const_iterator i=frames.begin(); i!=frames.end(); ++i)
+			{
+				cerr<<"    "<<i->address;
+				if(!i->symbol.empty())
+					cerr<<" in "<<i->symbol;
+				cerr<<" from "<<i->file<<'\n';
+			}
+		}
+
+		delete app_;
+		return 124;
+	}
 }
 
 /**
 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
+@param   reason  Why the function was called
+@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)
+void Application::usage(const char *reason, const char *, bool)
 {
+	if(reason)
+		cerr<<"UsageError: "<<reason<<'\n';
 	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
+	loop_mode_(TICK_SLEEP)
 { }
 
 /**
-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.
+Default main loop.  Behavior depends on loop_mode_.  A custom main loop should
+monitor the done member variable and return exit_code.
 */
 int Application::main()
 {
+	if(loop_mode_==NONE)
+		return 0;
+
 	done=false;
 	while(!done)
 	{
-		if(tick_mode_==IDLE)
+		if(loop_mode_==SLEEP)
+		{
+			sleep_sem_.wait();
+			if(!done)
+				tick();
+		}
+		else if(loop_mode_==TICK_SLEEP)
 		{
-			if(poller_)
-				poller_->poll(0);
 			tick();
-#ifdef WIN32
-			Sleep(0);
-#else
-			//sched_yield();
-			timespec ts={0,1000000};
-			nanosleep(&ts, 0);
-#endif
+			Time::sleep(Time::msec);
 		}
-		else
+		else if(loop_mode_==TICK_YIELD)
 		{
-			if(poller_)
-				poller_->poll(-1);
-			else
-			{
+			tick();
 #ifdef WIN32
-				Sleep(1);
+			Sleep(0);
 #else
-				timespec ts={1000,0};
-				nanosleep(&ts, 0);
+			sched_yield();
 #endif
-			}
-			if(tick_mode_!=NONE)
-				tick();
 		}
+		else if(loop_mode_==TICK_BUSY)
+			tick();
 	}
 
 	return exit_code;
@@ -158,12 +152,25 @@ void Application::catch_signal(int s)
 	signal(s, &sighandler_);
 }
 
-void Application::set_tick_mode(TickMode t)
+/**
+Changes the main loop mode.
+*/
+void Application::set_loop_mode(LoopMode l)
 {
-	tick_mode_=t;
-#ifndef WIN32 //XXX
-	pthread_kill(main_tid, SIGALRM);	
-#endif
+	LoopMode old_mode=loop_mode_;
+	loop_mode_=l;
+	if(old_mode==SLEEP)
+		sleep_sem_.signal();
+}
+
+/**
+Causes the tick() function to be executed once if loop mode is SLEEP.  Has no
+effect with other loop modes.
+*/
+void Application::induce_tick()
+{
+	if(loop_mode_==SLEEP)
+		sleep_sem_.signal();
 }
 
 /**
@@ -173,11 +180,13 @@ void Application::exit(int c)
 {
 	done=true;
 	exit_code=c;
-#ifndef WIN32 //XXX
-	pthread_kill(main_tid, SIGALRM);	
-#endif
+	if(loop_mode_==SLEEP)
+		sleep_sem_.signal();
 }
 
+/**
+Static wrapper function to call a member function of the Application instance.
+*/
 void Application::sighandler_(int s)
 {
 	app_->sighandler(s);
@@ -196,5 +205,6 @@ Application::RegBase::RegBase()
 
 Application *Application::app_=0;
 Application::RegBase *Application::reg_app_=0;
+void *Application::data_=0;
 
 } // namespace Msp