X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=kern%2Fsignal.c;h=71ccf67ada7dd6090ecc5a1420a7580567dda67d;hb=HEAD;hp=fe4ba314c044c786d0aebf4335352b18cb281569;hpb=99ebec567d8485806f6ebe23b8c8a1b825d0cf4d;p=bertos.git diff --git a/kern/signal.c b/kern/signal.c deleted file mode 100755 index fe4ba314..00000000 --- a/kern/signal.c +++ /dev/null @@ -1,131 +0,0 @@ -/*! - * \file - * - * - * \brief IPC signals implementation. - * - * Each process can wait for just one signal. - * Multiple processes can wait for the same signal. In this - * case, each signal will wake-up one of them. - * - * \version $Id$ - * - * \author Bernardo Innocenti - */ - -/* - * $Log$ - * Revision 1.3 2004/07/30 14:24:16 rasky - * Task switching con salvataggio perfetto stato di interrupt (SR) - * Kernel monitor per dump informazioni su stack dei processi - * - * Revision 1.2 2004/06/03 11:27:09 bernie - * Add dual-license information. - * - * Revision 1.1 2004/05/23 17:27:00 bernie - * Import kern/ subdirectory. - * - */ - -#include "signal.h" -#include "proc.h" -#include "proc_p.h" -#include "hw.h" - -// FIXME -#if CONFIG_KERN_SIGNALS - -/*! - * Check if any of the signals in \a sigs has occurred and clear them. - * Return the signals that have occurred. - */ -sigset_t sig_check(sigset_t sigs) -{ - sigset_t result; - cpuflags_t flags; - - DISABLE_IRQSAVE(flags); - result = CurrentProcess->sig_recv & sigs; - CurrentProcess->sig_recv &= ~sigs; - ENABLE_IRQRESTORE(flags); - return result; -} - - -/*! - * Sleep until any of the signals in \a sigs occurs. - * Return the signal(s) that have awaked the process. - */ -sigset_t sig_wait(sigset_t sigs) -{ - sigset_t result; - cpuflags_t flags; - - DISABLE_IRQSAVE(flags); - - /* Loop until we get at least one of the signals */ - while (!(result = CurrentProcess->sig_recv & sigs)) - { - /* go to sleep and proc_schedule() another process */ - CurrentProcess->sig_wait = sigs; - proc_schedule(); - } - - /* Signals found: clear them and return */ - CurrentProcess->sig_recv &= ~sigs; - ENABLE_IRQRESTORE(flags); - return result; -} - - -/*! - * Send the signals \a sigs to the process \a proc. - * The process will be awaken if it was waiting for any of them. - * - * This call is interrupt safe (no \c DISABLE_INTS/ENABLE_INTS protection) - */ -void _sig_signal(Process *proc, sigset_t sigs) -{ - /* Set the signals */ - proc->sig_recv |= sigs; - - /* Check if process needs to be awaken */ - if (proc->sig_recv & proc->sig_wait) - { - /* Wake up process and enqueue in ready list */ - proc->sig_wait = 0; - SCHED_ENQUEUE(proc); - } -} - - -/*! - * Same as _sig_signal() with interrupt protection. - * - * \note Inlined manually because some compilers are too - * stupid to it automatically. - */ -void sig_signal(Process *proc, sigset_t sigs) -{ - DISABLE_INTS; - - /* Set the signals */ - proc->sig_recv |= sigs; - - /* Check if process needs to be awaken */ - if (proc->sig_recv & proc->sig_wait) - { - /* Wake up process and enqueue in ready list */ - proc->sig_wait = 0; - SCHED_ENQUEUE(proc); - } - - ENABLE_INTS; -} - -#endif /* CONFIG_KERN_SIGNALS */ -