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-rw-r--r--security/nss/lib/ssl/sslmutex.h151
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diff --git a/security/nss/lib/ssl/sslmutex.h b/security/nss/lib/ssl/sslmutex.h
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--- a/security/nss/lib/ssl/sslmutex.h
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-/* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is the Netscape security libraries.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 2001
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-/* $Id$ */
-#ifndef __SSLMUTEX_H_
-#define __SSLMUTEX_H_ 1
-
-/* What SSL really wants is portable process-shared unnamed mutexes in
- * shared memory, that have the property that if the process that holds
- * them dies, they are released automatically, and that (unlike fcntl
- * record locking) lock to the thread, not to the process.
- * NSPR doesn't provide that.
- * Windows has mutexes that meet that description, but they're not portable.
- * POSIX mutexes are not automatically released when the holder dies,
- * and other processes/threads cannot release the mutex on behalf of the
- * dead holder.
- * POSIX semaphores can be used to accomplish this on systems that implement
- * process-shared unnamed POSIX semaphores, because a watchdog thread can
- * discover and release semaphores that were held by a dead process.
- * On systems that do not support process-shared POSIX unnamed semaphores,
- * they can be emulated using pipes.
- * The performance cost of doing that is not yet measured.
- *
- * So, this API looks a lot like POSIX pthread mutexes.
- */
-
-#include "prtypes.h"
-#include "prlock.h"
-
-#if defined(WIN32)
-
-#include <wtypes.h>
-
-typedef struct
-{
- PRBool isMultiProcess;
-#ifdef WINNT
- /* on WINNT we need both the PRLock and the Win32 mutex for fibers */
- struct {
-#else
- union {
-#endif
- PRLock* sslLock;
- HANDLE sslMutx;
- } u;
-} sslMutex;
-
-typedef int sslPID;
-
-#elif defined(LINUX) || defined(AIX) || defined(VMS) || defined(BEOS) || defined(BSDI) || defined(NETBSD) || defined(OPENBSD)
-
-#include <sys/types.h>
-#include "prtypes.h"
-
-typedef struct {
- PRBool isMultiProcess;
- union {
- PRLock* sslLock;
- struct {
- int mPipes[3];
- PRInt32 nWaiters;
- } pipeStr;
- } u;
-} sslMutex;
-typedef pid_t sslPID;
-
-#elif defined(XP_UNIX) /* other types of Unix */
-
-#include <sys/types.h> /* for pid_t */
-#include <semaphore.h> /* for sem_t, and sem_* functions */
-
-typedef struct
-{
- PRBool isMultiProcess;
- union {
- PRLock* sslLock;
- sem_t sem;
- } u;
-} sslMutex;
-
-typedef pid_t sslPID;
-
-#else
-
-/* what platform is this ?? */
-
-typedef struct {
- PRBool isMultiProcess;
- union {
- PRLock* sslLock;
- /* include cross-process locking mechanism here */
- } u;
-} sslMutex;
-
-typedef int sslPID;
-
-#endif
-
-#include "seccomon.h"
-
-SEC_BEGIN_PROTOS
-
-extern SECStatus sslMutex_Init(sslMutex *sem, int shared);
-
-extern SECStatus sslMutex_Destroy(sslMutex *sem);
-
-extern SECStatus sslMutex_Unlock(sslMutex *sem);
-
-extern SECStatus sslMutex_Lock(sslMutex *sem);
-
-#ifdef WINNT
-
-extern SECStatus sslMutex_2LevelInit(sslMutex *sem);
-
-#endif
-
-SEC_END_PROTOS
-
-#endif