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+# This Makefile.in is free software; the Free Software Foundation
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+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS all all-am check check-TESTS check-am clean \
+ clean-generic clean-libtool clean-noinstPROGRAMS ctags \
+ distclean distclean-compile distclean-generic \
+ distclean-libtool distclean-tags distdir dvi dvi-am html \
+ html-am info info-am install install-am install-data \
+ install-data-am install-dvi install-dvi-am install-exec \
+ install-exec-am install-html install-html-am install-info \
+ install-info-am install-man install-pdf install-pdf-am \
+ install-ps install-ps-am install-strip installcheck \
+ installcheck-am installdirs maintainer-clean \
+ maintainer-clean-generic mostlyclean mostlyclean-compile \
+ mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+ tags uninstall uninstall-am
+
+@GRAS_ARCH_32_BITS_TRUE@test-sg:
+@GRAS_ARCH_32_BITS_TRUE@ $(TESTS_ENVIRONMENT) test_sg_32
+@GRAS_ARCH_32_BITS_FALSE@test-sg:
+@GRAS_ARCH_32_BITS_FALSE@ $(TESTS_ENVIRONMENT) test_sg_64
+
+test-rl: force
+ $(TESTS_ENVIRONMENT) test_rl
+
+force:
+
+.PHONY: test_sg_32 test_SG_64 test_rl
+
+# Take care of generatated sources
+# (manually since the child is not in the deployment file, so we need an extra argument to the stub generator)
+
+_synchro_simulator.c _synchro_philosopher.c: $(srcdir)/synchro.xml $(top_builddir)/tools/gras/gras_stub_generator@EXEEXT@
+ [ x@EXEEXT@ = x ] || exenv=wine; $$exenv $(top_builddir)/tools/gras/gras_stub_generator@EXEEXT@ synchro $(srcdir)/synchro.xml
+
+$(top_builddir)/tools/gras/gras_stub_generator@EXEEXT@:
+ make -C $(top_builddir)/tools/gras/ gras_stub_generator@EXEEXT@
+
+dist-files:
+ @for n in $(DISTFILES) ; do echo $(SRCFILE)$$n; done
+ @echo
+ @for n in $(DIST_SUBDIRS) ; do if [ x$$n != x. ] ; then $(MAKE) -C $$n dist-files SRCFILE=$(SRCFILE)$$n/ ; fi; done
+
+# Cruft
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--- /dev/null
+/* $Id$ */
+
+/* philosopher - classical dinning philosopher as a demo xbt syncro stuff */
+
+/* Copyright (c) 2007 Martin Quinson. All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include "gras.h"
+#include "xbt/synchro.h"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(philo,"Logs of this example");
+
+
+/** Philosopher logic **/
+int lunch_amount = 10;
+int philosopher_amount;
+
+xbt_mutex_t mutex;
+xbt_cond_t *forks;
+
+#define THINKING 0
+#define EATING 1
+int *state;
+
+int *id; /* to pass a pointer to the threads without race condition */
+
+static void pickup(int id, int lunch) {
+ INFO2("Thread %d gets hungry (lunch #%d)",id,lunch);
+ xbt_mutex_lock(mutex);
+ while (state[(id + (philosopher_amount-1))%philosopher_amount] == EATING ||
+ state[(id + 1)%philosopher_amount] == EATING)
+ {
+ xbt_cond_wait(forks[id], mutex);
+ }
+
+ state[id] = EATING;
+ xbt_assert1(state[(id + (philosopher_amount-1))%philosopher_amount] == THINKING &&
+ state[(id + 1)%philosopher_amount] == THINKING ,
+ "Philosopher %d eats at the same time that one of its neighbors!!!",id);
+
+ xbt_mutex_unlock(mutex);
+ INFO1("Thread %d eats",id);
+}
+static void putdown(int id) {
+ INFO1("Thread %d is full",id);
+ xbt_mutex_lock(mutex);
+ state[id] = THINKING;
+ xbt_cond_signal(forks[(id+(philosopher_amount-1))%philosopher_amount]);
+ xbt_cond_signal(forks[(id+1)%philosopher_amount]);
+
+ xbt_mutex_unlock(mutex);
+ INFO1("Thread %d thinks",id);
+}
+
+/*
+ * Some additionnal code to let the father wait the childs
+ */
+xbt_mutex_t mut_end;
+xbt_cond_t cond_end;
+int running_threads;
+
+xbt_mutex_t dead_end;
+
+/* Code ran by each thread */
+static void philo_thread(void *arg) {
+ int id = *(int*)arg;
+ int i;
+
+ for (i=0; i<lunch_amount; i++) {
+ pickup(id,i);
+ gras_os_sleep(id / 10); /* each philosopher sleeps and eat a time related to its ID */
+ putdown(id);
+ gras_os_sleep(id / 10);
+ }
+
+ xbt_mutex_lock(mut_end);
+ running_threads--;
+ xbt_cond_signal(cond_end);
+ xbt_mutex_unlock(mut_end);
+
+ /* Enter an endless loop to test the killing facilities */
+ INFO1("Thread %d tries to enter the dead-end; hopefully, the master will cancel it",id);
+ xbt_mutex_lock(dead_end);
+ INFO1("Oops, thread %d reached the dead-end. Cancelation failed",id);
+}
+
+int philosopher (int argc,char *argv[]);
+int philosopher (int argc,char *argv[]) {
+ int i;
+ xbt_thread_t *philosophers;
+
+ gras_init(&argc,argv);
+ xbt_assert0(argc>=2,"This program expects one argument (the amount of philosophers)");
+
+ INFO0("Wait 1 sec to check that gras_os_sleep do works");
+ gras_os_sleep(1);
+
+ /* initializations of the philosopher mecanisms */
+ philosopher_amount = atoi(argv[1]);
+ state = xbt_new0(int,philosopher_amount);
+ id = xbt_new0(int,philosopher_amount);
+ forks = xbt_new(xbt_cond_t,philosopher_amount);
+ philosophers = xbt_new(xbt_thread_t,philosopher_amount);
+
+ mutex = xbt_mutex_init();
+ for (i=0; i<philosopher_amount; i++) {
+ state[i] = THINKING;
+ id[i] = i;
+ forks[i] = xbt_cond_init();
+ }
+
+ /* setup the ending mecanism */
+ running_threads = philosopher_amount;
+ cond_end = xbt_cond_init();
+ mut_end = xbt_mutex_init();
+ dead_end = xbt_mutex_init();
+ xbt_mutex_lock(dead_end);
+
+ INFO0("Enough waiting, spawn the threads");
+ /* spawn threads */
+ for (i=0; i<philosopher_amount; i++)
+ philosophers[i] = xbt_thread_create(philo_thread,&id[i]);
+
+ /* wait for them */
+ xbt_mutex_lock(mut_end);
+ while (running_threads)
+ xbt_cond_wait(cond_end,mut_end);
+ xbt_mutex_unlock(mut_end);
+
+ INFO0("Cancel all childs");
+ /* nuke them threads */
+ for (i=0; i<philosopher_amount; i++)
+ xbt_thread_cancel(philosophers[i]);
+
+ xbt_mutex_unlock(dead_end);
+ gras_exit();
+ return 0;
+}
