michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include <string.h>
michael@0: #include "primpl.h"
michael@0: 
michael@0: /* Lock used to lock the environment */
michael@0: #if defined(_PR_NO_PREEMPT)
michael@0: #define _PR_NEW_LOCK_ENV()
michael@0: #define _PR_DELETE_LOCK_ENV()
michael@0: #define _PR_LOCK_ENV()
michael@0: #define _PR_UNLOCK_ENV()
michael@0: #elif defined(_PR_LOCAL_THREADS_ONLY)
michael@0: extern _PRCPU * _pr_primordialCPU;
michael@0: static PRIntn _is;
michael@0: #define _PR_NEW_LOCK_ENV()
michael@0: #define _PR_DELETE_LOCK_ENV()
michael@0: #define _PR_LOCK_ENV() if (_pr_primordialCPU) _PR_INTSOFF(_is);
michael@0: #define _PR_UNLOCK_ENV() if (_pr_primordialCPU) _PR_INTSON(_is);
michael@0: #else
michael@0: static PRLock *_pr_envLock = NULL;
michael@0: #define _PR_NEW_LOCK_ENV() {_pr_envLock = PR_NewLock();}
michael@0: #define _PR_DELETE_LOCK_ENV() \
michael@0:     { if (_pr_envLock) { PR_DestroyLock(_pr_envLock); _pr_envLock = NULL; } }
michael@0: #define _PR_LOCK_ENV() { if (_pr_envLock) PR_Lock(_pr_envLock); }
michael@0: #define _PR_UNLOCK_ENV() { if (_pr_envLock) PR_Unlock(_pr_envLock); }
michael@0: #endif
michael@0: 
michael@0: /************************************************************************/
michael@0: 
michael@0: void _PR_InitEnv(void)
michael@0: {
michael@0: 	_PR_NEW_LOCK_ENV();
michael@0: }
michael@0: 
michael@0: void _PR_CleanupEnv(void)
michael@0: {
michael@0:     _PR_DELETE_LOCK_ENV();
michael@0: }
michael@0: 
michael@0: PR_IMPLEMENT(char*) PR_GetEnv(const char *var)
michael@0: {
michael@0:     char *ev;
michael@0: 
michael@0:     if (!_pr_initialized) _PR_ImplicitInitialization();
michael@0: 
michael@0:     _PR_LOCK_ENV();
michael@0:     ev = _PR_MD_GET_ENV(var);
michael@0:     _PR_UNLOCK_ENV();
michael@0:     return ev;
michael@0: }
michael@0: 
michael@0: PR_IMPLEMENT(PRStatus) PR_SetEnv(const char *string)
michael@0: {
michael@0:     PRIntn result;
michael@0: 
michael@0:     if (!_pr_initialized) _PR_ImplicitInitialization();
michael@0: 
michael@0:     if ( !strchr(string, '=')) return(PR_FAILURE);
michael@0: 
michael@0:     _PR_LOCK_ENV();
michael@0:     result = _PR_MD_PUT_ENV(string);
michael@0:     _PR_UNLOCK_ENV();
michael@0:     return (result)? PR_FAILURE : PR_SUCCESS;
michael@0: }