Resync new repository with old repo r5166

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3
2026-11-03 19:51:35 +08:00 · 2012-09-17 18:18:44 +00:00
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+/************************************************************************
+ * lib/stdlib/lib_abort.c
+ *
+ *   Copyright (C) 2007, 2009, 2011-2012 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 <stdlib.h>
+#include <pthread.h>
+
+/************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************/
+
+/************************************************************************
+ * Private Type Declarations
+ ************************************************************************/
+
+/************************************************************************
+ * Global Variables
+ ************************************************************************/
+
+/************************************************************************
+ * Private Variables
+ ************************************************************************/
+
+/************************************************************************
+ * Private Function Prototypes
+ ************************************************************************/
+
+/************************************************************************
+ * Private Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Public Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Name: Abort
+ *
+ * Description:
+ *   The abort() first unblocks the SIGABRT signal, and then raises that
+ *   signal for the calling process. This results in the abnormal
+ *   termination of the process unless the SIGABRT signal is caught and
+ *   the signal handler does not return.
+ *
+ *   If the abort() function causes process termination, all open
+ *   streams are closed and flushed.
+ *
+ *   If the SIGABRT signal is ignored, or caught by a handler that
+ *   returns, the abort() function will still terminate the process.
+ *   It does this by restoring the default disposition for SIGABRT and
+ *   then raising the signal for a second time.
+ *
+ * Input parameters:
+ *   None
+ *
+ * Returned Value:
+ *  This function does not return,
+ *
+ ************************************************************************/
+
+void abort(void)
+{
+  /* NuttX does not support standard signal functionality (like the
+   * behavior of the SIGABRT signal).  So no attempt is made to provide
+   * a conformant version of abort() at this time.  This version does not
+   * signal the calling thread all.
+   *
+   * Note that pthread_exit() is called instead of exit().  That is because
+   * we do no know if abort was called from a pthread or a normal thread
+   * (we could find out, of course).  If abort() is called from a non-pthread,
+   * then pthread_exit() should fail and fall back to call exit() anyway.
+   *
+   * If exit() is called (either below or via pthread_exit()), then exit()
+   * will flush and close all open files and terminate the thread.  If this
+   * function was called from a pthread, then pthread_exit() will complete
+   * any joins, but will not flush or close any streams.
+   */
+
+#ifdef CONFIG_DISABLE_PTHREAD
+  exit(EXIT_FAILURE);
+#else
+  pthread_exit(NULL);
+#endif
+}