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Diffstat (limited to 'nuttx/sched/sig_deliver.c')
-rw-r--r-- | nuttx/sched/sig_deliver.c | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/nuttx/sched/sig_deliver.c b/nuttx/sched/sig_deliver.c deleted file mode 100644 index a1297fbc2..000000000 --- a/nuttx/sched/sig_deliver.c +++ /dev/null @@ -1,159 +0,0 @@ -/**************************************************************************** - * sched/sig_deliver.c - * - * Copyright (C) 2007, 2008, 2012 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include <sys/types.h> -#include <signal.h> -#include <unistd.h> -#include <sched.h> -#include <debug.h> -#include <nuttx/arch.h> - -#include "os_internal.h" -#include "sem_internal.h" -#include "sig_internal.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Type Declarations - ****************************************************************************/ - -/**************************************************************************** - * Global Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: sig_deliver - * - * Description: - * This function is called on the thread of execution of the signal - * receiving task. It processes all queued signals then returns. - * - ****************************************************************************/ - -void sig_deliver(FAR _TCB *stcb) -{ - FAR sigq_t *sigq; - FAR sigq_t *next; - sigset_t savesigprocmask; - irqstate_t saved_state; - int saved_errno; - - sched_lock(); - - /* Save the thread errno. When we finished dispatching the - * signal actions and resume the task, the errno value must - * be unchanged by the operation of the signal handling. In - * particular, the EINTR indication that says that the task - * was reawakened by a signal must be retained. - */ - - saved_errno = stcb->pterrno; - for (sigq = (FAR sigq_t*)stcb->sigpendactionq.head; (sigq); sigq = next) - { - next = sigq->flink; - sdbg("Sending signal sigq=0x%x\n", sigq); - - /* Remove the signal structure from the sigpendactionq and place it - * in the sigpostedq. NOTE: Since signals are processed one at a - * time, there should never be more than one signal in the sigpostedq - */ - - saved_state = irqsave(); - sq_rem((FAR sq_entry_t*)sigq, &(stcb->sigpendactionq)); - sq_addlast((FAR sq_entry_t*)sigq, &(stcb->sigpostedq)); - irqrestore(saved_state); - - /* Call the signal handler (unless the signal was cancelled) - * - * Save a copy of the old sigprocmask and install the new - * (temporary) sigprocmask. The new sigprocmask is the union - * of the current sigprocmask and the sa_mask for the signal being - * delivered plus the signal being delivered. - */ - - savesigprocmask = stcb->sigprocmask; - stcb->sigprocmask = savesigprocmask | sigq->mask | SIGNO2SET(sigq->info.si_signo); - - /* Deliver the signal */ - - (*sigq->action.sighandler)(sigq->info.si_signo, &sigq->info, NULL); - - /* Restore the original sigprocmask */ - - stcb->sigprocmask = savesigprocmask; - - /* Now, handle the (rare?) case where (a) a blocked signal was - * received while the signal handling executed but (b) restoring the - * original sigprocmask will unblock the signal. - */ - - sig_unmaskpendingsignal(); - - /* Remove the signal from the sigpostedq */ - - saved_state = irqsave(); - sq_rem((FAR sq_entry_t*)sigq, &(stcb->sigpostedq)); - irqrestore(saved_state); - - /* Then deallocate it */ - - sig_releasependingsigaction(sigq); - } - - stcb->pterrno = saved_errno; - sched_unlock(); -} - |