2 This file is part of libmspcore
3 Copyright © 2006 Mikko Rasa, Mikkosoft Productions
4 Distributed under the LGPL
8 #include "../time/units.h"
9 #include "application.h"
17 Constructs an instance of the registered application class and runs it. If the
18 application throws a UsageError, the static usage() function is called.
20 This function can only be called once. The global main() function provided by
21 the library normally does it automatically at program startup.
23 int Application::run(int argc, char **argv)
25 static bool called=false;
28 cerr<<"Trying to call Application::run_app twice!\n";
35 cerr<<"Trying to run with no application class registered!\n";
41 app_=reg_app_->create_app(argc, argv);
43 catch(const UsageError &e)
45 reg_app_->usage(e.what(), argv[0], e.get_brief());
49 int result=app_->main();
55 Prints a message describing the usage of the application. The default version
56 will blame the programmer for being lazy.
58 @param reason Why the function was called
59 @param argv0 The value of argv[0], to be used in the message
60 @param brief Whether to print a brief or long usage message
62 void Application::usage(const char *reason, const char *, bool)
66 cerr<<"The programmer was lazy and didn't write a usage() function for this application.\n";
69 Application::Application():
71 loop_mode_(TICK_SLEEP)
75 Default main loop. Behavior depends on loop_mode_. A custom main loop should
76 monitor the done member variable and return exit_code.
78 int Application::main()
92 else if(loop_mode_==TICK_SLEEP)
97 else if(loop_mode_==TICK_YIELD)
112 Sets the specified signal to be delivered to the sighandler member function.
114 void Application::catch_signal(int s)
116 signal(s, &sighandler_);
120 Changes the main loop mode.
122 void Application::set_loop_mode(LoopMode l)
124 LoopMode old_mode=loop_mode_;
131 Causes the tick() function to be executed once if loop mode is SLEEP. Has no
132 effect with other loop modes.
134 void Application::induce_tick()
136 if(loop_mode_==SLEEP)
141 Causes the application to exit gracefully with the given exit code.
143 void Application::exit(int c)
147 if(loop_mode_==SLEEP)
152 Static wrapper function to call a member function of the Application instance.
154 void Application::sighandler_(int s)
159 Application::RegBase::RegBase()
163 cerr<<"Warning: registering the application twice\n";
170 Application *Application::app_=0;
171 Application::RegBase *Application::reg_app_=0;