b41cf28662
etc. Add "install" target to test directory which installs the example programs. Install the config.h file in the examples directory. Make sure the example programs compile outside the FLTK source dir. Add example programs to fltk.list.in. Fix missing redraw() in x_cb() in FLUID... git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@4287 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
131 lines
3.4 KiB
C++
131 lines
3.4 KiB
C++
//
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// "$Id$"
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//
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// Threading example program for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2005 by Bill Spitzak and others.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA.
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//
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// Please report all bugs and problems to "fltk-bugs@fltk.org".
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//
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#include "config.h"
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#if HAVE_PTHREAD || defined(WIN32)
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# include <FL/Fl.H>
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# include <FL/Fl_Window.H>
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# include <FL/Fl_Browser.H>
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# include <FL/Fl_Value_Output.H>
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# include "threads.h"
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# include <stdio.h>
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# include <math.h>
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Fl_Thread prime_thread;
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Fl_Browser *browser1, *browser2;
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Fl_Value_Output *value1, *value2;
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int start2 = 3;
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void* prime_func(void* p)
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{
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Fl_Browser* browser = (Fl_Browser*) p;
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Fl_Value_Output *value;
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int n;
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int step;
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if (browser == browser2) {
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n = start2;
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start2 += 2;
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step = 12;
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value = value2;
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} else {
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n = 3;
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step = 2;
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value = value1;
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}
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// very simple prime number calculator !
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for (; ; n+= step) {
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int p;
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int hn = (int)sqrt((double)n);
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for (p=3; p<=hn; p+=2) if ( n%p == 0 ) break;
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if (p >= hn) {
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char s[128];
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sprintf(s, "%d", n);
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Fl::lock();
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browser->add(s);
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browser->bottomline(browser->size());
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if (n > value->value()) value->value(n);
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Fl::unlock();
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Fl::awake((void*) (browser == browser1? p:0)); // Cause the browser to redraw ...
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}
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}
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return 0;
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}
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int main(int argc, char **argv)
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{
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Fl_Window* w = new Fl_Window(200, 200, "Single Thread");
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browser1 = new Fl_Browser(0, 0, 200, 175);
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w->resizable(browser1);
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value1 = new Fl_Value_Output(100, 175, 200, 25, "Max Prime:");
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w->end();
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w->show(argc, argv);
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w = new Fl_Window(200, 200, "Six Threads");
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browser2 = new Fl_Browser(0, 0, 200, 175);
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w->resizable(browser2);
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value2 = new Fl_Value_Output(100, 175, 200, 25, "Max Prime:");
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w->end();
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w->show();
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browser1->add("Prime numbers:");
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browser2->add("Prime numbers:");
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Fl::lock(); // you must do this before creating any threads!
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// One thread displaying in one browser
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fl_create_thread(prime_thread, prime_func, browser1);
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// Several threads displaying in another browser
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fl_create_thread(prime_thread, prime_func, browser2);
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fl_create_thread(prime_thread, prime_func, browser2);
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fl_create_thread(prime_thread, prime_func, browser2);
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fl_create_thread(prime_thread, prime_func, browser2);
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fl_create_thread(prime_thread, prime_func, browser2);
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fl_create_thread(prime_thread, prime_func, browser2);
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// Fl::run();
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while (w->visible()) {
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Fl::wait();
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// void* m = Fl::thread_message();
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// printf("Received message: %p\n", m);
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}
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return 0;
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}
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#else
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# include <FL/fl_ask.H>
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int main() {
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fl_alert("Sorry, threading not supported on this platform!");
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}
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#endif // HAVE_PTHREAD || WIN32
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//
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// End of "$Id$".
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//
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