4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
23 * this file and link it with other files to produce an executable, this
24 * file does not by itself cause the resulting executable to be covered by
25 * the GNU General Public License. This exception does not however
26 * invalidate any other reasons why the executable file might be covered by
27 * the GNU General Public License.
29 * Copyright 2008 Bernie Innocenti <bernie@codewiz.org>
32 * \brief Process scheduler (public interface).
34 * \version $Id: proc.h 1646 2008-08-17 13:49:48Z bernie $
35 * \author Bernie Innocenti <bernie@codewiz.org>
39 #include <cfg/module.h>
40 #include <kern/proc_p.h>
41 #include <kern/proc.h>
43 #include <cfg/cfg_kern.h>
45 #include <unistd.h> // FIXME: move POSIX stuff to irq_posix.h
51 static void (*irq_handlers[100])(void);
54 void irq_entry(int signum)
56 #if CONFIG_KERN_PREEMPT
57 Process * const old_process = CurrentProcess;
60 irq_handlers[signum]();
62 #if CONFIG_KERN_PREEMPT
63 ASSERT2(CurrentProcess, "no idle proc?");
65 if (old_process != CurrentProcess)
69 TRACEMSG("switching from %p:%s to %p:%s",
70 old_process, old_process ? old_process->monitor.name : "---",
71 CurrentProcess, proc_currentName());
74 swapcontext(&old_process->context, &CurrentProcess->context);
76 setcontext(&CurrentProcess->context);
80 TRACEMSG("resuming %p:%s", CurrentProcess, CurrentProcess->monitor.name);
81 #endif // CONFIG_KERN_PREEMPT
84 void irq_register(int irq, void (*callback)(void))
86 irq_handlers[irq] = callback;
93 act.sa_handler = irq_entry;
94 sigemptyset(&act.sa_mask);
95 //sigaddset(&act.sa_mask, irq);
96 act.sa_flags = SA_RESTART; // | SA_SIGINFO;
98 sigaction(SIGUSR1, &act, NULL);
99 sigaction(SIGALRM, &act, NULL);