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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 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 Portable Runtime (NSPR).
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998-2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License Version 2 or later (the
* "GPL"), in which case the provisions of the GPL are applicable
* instead of those above. If you wish to allow use of your
* version of this file only under the terms of the GPL and not to
* allow others to use your version of this file under the MPL,
* indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by
* the GPL. If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the
* GPL.
*/
#include <string.h>
#include "primpl.h"
/* Lock used to lock the environment */
#if defined(_PR_NO_PREEMPT)
#define _PR_NEW_LOCK_ENV()
#define _PR_DELETE_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_DELETE_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_DELETE_LOCK_ENV() \
{ if (_pr_envLock) { PR_DestroyLock(_pr_envLock); _pr_envLock = NULL; } }
#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();
}
void _PR_CleanupEnv(void)
{
_PR_DELETE_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;
}
PR_IMPLEMENT(PRStatus) PR_SetEnv(const char *string)
{
PRIntn result;
if (!_pr_initialized) _PR_ImplicitInitialization();
if ( !strchr(string, '=')) return(PR_FAILURE);
_PR_LOCK_ENV();
result = _PR_MD_PUT_ENV(string);
_PR_UNLOCK_ENV();
return (result)? PR_FAILURE : PR_SUCCESS;
}
/*
** DEPRECATED. Use PR_SetEnv() instead.
*/
#ifdef XP_MAC
PR_IMPLEMENT(PRIntn) PR_PutEnv(const char *string)
{
return (PR_SetEnv(string) == PR_SUCCESS) ? PR_TRUE : PR_FALSE;
}
#endif
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