From 2ab3d99967d68c79351fe2a3df22c445447e3010 Mon Sep 17 00:00:00 2001
From: Michał Cichoń <michcic@gmail.com>
Date: Tue, 15 Nov 2011 22:28:48 +0100
Subject: Initial import.

---
 pthreads/src/cleanup.c | 148 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 pthreads/src/cleanup.c

(limited to 'pthreads/src/cleanup.c')

diff --git a/pthreads/src/cleanup.c b/pthreads/src/cleanup.c
new file mode 100644
index 0000000..381d1e8
--- /dev/null
+++ b/pthreads/src/cleanup.c
@@ -0,0 +1,148 @@
+/*
+ * cleanup.c
+ *
+ * Description:
+ * This translation unit implements routines associated
+ * with cleaning up threads.
+ *
+ *
+ * --------------------------------------------------------------------------
+ *
+ *      Pthreads-win32 - POSIX Threads Library for Win32
+ *      Copyright(C) 1998 John E. Bossom
+ *      Copyright(C) 1999,2005 Pthreads-win32 contributors
+ * 
+ *      Contact Email: rpj@callisto.canberra.edu.au
+ * 
+ *      The current list of contributors is contained
+ *      in the file CONTRIBUTORS included with the source
+ *      code distribution. The list can also be seen at the
+ *      following World Wide Web location:
+ *      http://sources.redhat.com/pthreads-win32/contributors.html
+ * 
+ *      This library is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU Lesser General Public
+ *      License as published by the Free Software Foundation; either
+ *      version 2 of the License, or (at your option) any later version.
+ * 
+ *      This library is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *      Lesser General Public License for more details.
+ * 
+ *      You should have received a copy of the GNU Lesser General Public
+ *      License along with this library in the file COPYING.LIB;
+ *      if not, write to the Free Software Foundation, Inc.,
+ *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include "pthread.h"
+#include "implement.h"
+
+
+/*
+ * The functions ptw32_pop_cleanup and ptw32_push_cleanup
+ * are implemented here for applications written in C with no
+ * SEH or C++ destructor support. 
+ */
+
+ptw32_cleanup_t *
+ptw32_pop_cleanup (int execute)
+     /*
+      * ------------------------------------------------------
+      * DOCPUBLIC
+      *      This function pops the most recently pushed cleanup
+      *      handler. If execute is nonzero, then the cleanup handler
+      *      is executed if non-null.
+      *
+      * PARAMETERS
+      *      execute
+      *              if nonzero, execute the cleanup handler
+      *
+      *
+      * DESCRIPTION
+      *      This function pops the most recently pushed cleanup
+      *      handler. If execute is nonzero, then the cleanup handler
+      *      is executed if non-null.
+      *      NOTE: specify 'execute' as nonzero to avoid duplication
+      *                of common cleanup code.
+      *
+      * RESULTS
+      *              N/A
+      *
+      * ------------------------------------------------------
+      */
+{
+  ptw32_cleanup_t *cleanup;
+
+  cleanup = (ptw32_cleanup_t *) pthread_getspecific (ptw32_cleanupKey);
+
+  if (cleanup != NULL)
+    {
+      if (execute && (cleanup->routine != NULL))
+	{
+
+	  (*cleanup->routine) (cleanup->arg);
+
+	}
+
+      pthread_setspecific (ptw32_cleanupKey, (void *) cleanup->prev);
+
+    }
+
+  return (cleanup);
+
+}				/* ptw32_pop_cleanup */
+
+
+void
+ptw32_push_cleanup (ptw32_cleanup_t * cleanup,
+		    ptw32_cleanup_callback_t routine, void *arg)
+     /*
+      * ------------------------------------------------------
+      * DOCPUBLIC
+      *      This function pushes a new cleanup handler onto the thread's stack
+      *      of cleanup handlers. Each cleanup handler pushed onto the stack is
+      *      popped and invoked with the argument 'arg' when
+      *              a) the thread exits by calling 'pthread_exit',
+      *              b) when the thread acts on a cancellation request,
+      *              c) or when the thread calls pthread_cleanup_pop with a nonzero
+      *                 'execute' argument
+      *
+      * PARAMETERS
+      *      cleanup
+      *              a pointer to an instance of pthread_cleanup_t,
+      *
+      *      routine
+      *              pointer to a cleanup handler,
+      *
+      *      arg
+      *              parameter to be passed to the cleanup handler
+      *
+      *
+      * DESCRIPTION
+      *      This function pushes a new cleanup handler onto the thread's stack
+      *      of cleanup handlers. Each cleanup handler pushed onto the stack is
+      *      popped and invoked with the argument 'arg' when
+      *              a) the thread exits by calling 'pthread_exit',
+      *              b) when the thread acts on a cancellation request,
+      *              c) or when the thrad calls pthread_cleanup_pop with a nonzero
+      *                 'execute' argument
+      *      NOTE: pthread_push_cleanup, ptw32_pop_cleanup must be paired
+      *                in the same lexical scope.
+      *
+      * RESULTS
+      *              pthread_cleanup_t *
+      *                              pointer to the previous cleanup
+      *
+      * ------------------------------------------------------
+      */
+{
+  cleanup->routine = routine;
+  cleanup->arg = arg;
+
+  cleanup->prev = (ptw32_cleanup_t *) pthread_getspecific (ptw32_cleanupKey);
+
+  pthread_setspecific (ptw32_cleanupKey, (void *) cleanup);
+
+}				/* ptw32_push_cleanup */
-- 
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