mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-11-16 12:30:13 +01:00
128 lines
3.2 KiB
C
128 lines
3.2 KiB
C
/* ***** 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) 1994-2000
|
|
* 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 ***** */
|
|
/*
|
|
* Locking and queue management primatives
|
|
*
|
|
*/
|
|
|
|
#include "seccomon.h"
|
|
#include "nssilock.h"
|
|
#include "secmod.h"
|
|
#include "secmodi.h"
|
|
#include "secmodti.h"
|
|
#include "nssrwlk.h"
|
|
|
|
/*
|
|
* create a new lock for a Module List
|
|
*/
|
|
SECMODListLock *SECMOD_NewListLock()
|
|
{
|
|
return NSSRWLock_New( 10, "moduleListLock");
|
|
}
|
|
|
|
/*
|
|
* destroy the lock
|
|
*/
|
|
void SECMOD_DestroyListLock(SECMODListLock *lock)
|
|
{
|
|
NSSRWLock_Destroy(lock);
|
|
}
|
|
|
|
|
|
/*
|
|
* Lock the List for Read: NOTE: this assumes the reading isn't so common
|
|
* the writing will be starved.
|
|
*/
|
|
void SECMOD_GetReadLock(SECMODListLock *modLock)
|
|
{
|
|
NSSRWLock_LockRead(modLock);
|
|
}
|
|
|
|
/*
|
|
* Release the Read lock
|
|
*/
|
|
void SECMOD_ReleaseReadLock(SECMODListLock *modLock)
|
|
{
|
|
NSSRWLock_UnlockRead(modLock);
|
|
}
|
|
|
|
|
|
/*
|
|
* lock the list for Write
|
|
*/
|
|
void SECMOD_GetWriteLock(SECMODListLock *modLock)
|
|
{
|
|
NSSRWLock_LockWrite(modLock);
|
|
}
|
|
|
|
|
|
/*
|
|
* Release the Write Lock: NOTE, this code is pretty inefficient if you have
|
|
* lots of write collisions.
|
|
*/
|
|
void SECMOD_ReleaseWriteLock(SECMODListLock *modLock)
|
|
{
|
|
NSSRWLock_UnlockWrite(modLock);
|
|
}
|
|
|
|
|
|
/*
|
|
* must Hold the Write lock
|
|
*/
|
|
void
|
|
SECMOD_RemoveList(SECMODModuleList **parent, SECMODModuleList *child)
|
|
{
|
|
*parent = child->next;
|
|
child->next = NULL;
|
|
}
|
|
|
|
/*
|
|
* if lock is not specified, it must already be held
|
|
*/
|
|
void
|
|
SECMOD_AddList(SECMODModuleList *parent, SECMODModuleList *child,
|
|
SECMODListLock *lock)
|
|
{
|
|
if (lock) { SECMOD_GetWriteLock(lock); }
|
|
|
|
child->next = parent->next;
|
|
parent->next = child;
|
|
|
|
if (lock) { SECMOD_ReleaseWriteLock(lock); }
|
|
}
|
|
|
|
|