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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include <string.h>
#include "primpl.h"
/* Lock used to lock the environment */
#if defined(_PR_NO_PREEMPT)
#define _PR_NEW_LOCK_ENV()
#define _PR_LOCK_ENV()
#define _PR_UNLOCK_ENV()
#elif defined(_PR_LOCAL_THREADS_ONLY)
extern _PRCPU * _pr_primordialCPU;
static PRIntn _is;
#define _PR_NEW_LOCK_ENV()
#define _PR_LOCK_ENV() if (_pr_primordialCPU) _PR_INTSOFF(_is);
#define _PR_UNLOCK_ENV() if (_pr_primordialCPU) _PR_INTSON(_is);
#else
static PRLock *_pr_envLock = NULL;
#define _PR_NEW_LOCK_ENV() {_pr_envLock = PR_NewLock();}
#define _PR_LOCK_ENV() { if (_pr_envLock) PR_Lock(_pr_envLock); }
#define _PR_UNLOCK_ENV() { if (_pr_envLock) PR_Unlock(_pr_envLock); }
#endif
/************************************************************************/
void _PR_InitEnv()
{
_PR_NEW_LOCK_ENV();
}
PR_IMPLEMENT(char*) PR_GetEnv(const char *var)
{
char *ev;
if (!_pr_initialized) _PR_ImplicitInitialization();
_PR_LOCK_ENV();
ev = _PR_MD_GET_ENV(var);
_PR_UNLOCK_ENV();
return ev;
}
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