The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/nsprpub/pr/src/misc/prenv.c	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,67 @@
     1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
     1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +#include <string.h>
    1.10 +#include "primpl.h"
    1.11 +
    1.12 +/* Lock used to lock the environment */
    1.13 +#if defined(_PR_NO_PREEMPT)
    1.14 +#define _PR_NEW_LOCK_ENV()
    1.15 +#define _PR_DELETE_LOCK_ENV()
    1.16 +#define _PR_LOCK_ENV()
    1.17 +#define _PR_UNLOCK_ENV()
    1.18 +#elif defined(_PR_LOCAL_THREADS_ONLY)
    1.19 +extern _PRCPU * _pr_primordialCPU;
    1.20 +static PRIntn _is;
    1.21 +#define _PR_NEW_LOCK_ENV()
    1.22 +#define _PR_DELETE_LOCK_ENV()
    1.23 +#define _PR_LOCK_ENV() if (_pr_primordialCPU) _PR_INTSOFF(_is);
    1.24 +#define _PR_UNLOCK_ENV() if (_pr_primordialCPU) _PR_INTSON(_is);
    1.25 +#else
    1.26 +static PRLock *_pr_envLock = NULL;
    1.27 +#define _PR_NEW_LOCK_ENV() {_pr_envLock = PR_NewLock();}
    1.28 +#define _PR_DELETE_LOCK_ENV() \
    1.29 +    { if (_pr_envLock) { PR_DestroyLock(_pr_envLock); _pr_envLock = NULL; } }
    1.30 +#define _PR_LOCK_ENV() { if (_pr_envLock) PR_Lock(_pr_envLock); }
    1.31 +#define _PR_UNLOCK_ENV() { if (_pr_envLock) PR_Unlock(_pr_envLock); }
    1.32 +#endif
    1.33 +
    1.34 +/************************************************************************/
    1.35 +
    1.36 +void _PR_InitEnv(void)
    1.37 +{
    1.38 +	_PR_NEW_LOCK_ENV();
    1.39 +}
    1.40 +
    1.41 +void _PR_CleanupEnv(void)
    1.42 +{
    1.43 +    _PR_DELETE_LOCK_ENV();
    1.44 +}
    1.45 +
    1.46 +PR_IMPLEMENT(char*) PR_GetEnv(const char *var)
    1.47 +{
    1.48 +    char *ev;
    1.49 +
    1.50 +    if (!_pr_initialized) _PR_ImplicitInitialization();
    1.51 +
    1.52 +    _PR_LOCK_ENV();
    1.53 +    ev = _PR_MD_GET_ENV(var);
    1.54 +    _PR_UNLOCK_ENV();
    1.55 +    return ev;
    1.56 +}
    1.57 +
    1.58 +PR_IMPLEMENT(PRStatus) PR_SetEnv(const char *string)
    1.59 +{
    1.60 +    PRIntn result;
    1.61 +
    1.62 +    if (!_pr_initialized) _PR_ImplicitInitialization();
    1.63 +
    1.64 +    if ( !strchr(string, '=')) return(PR_FAILURE);
    1.65 +
    1.66 +    _PR_LOCK_ENV();
    1.67 +    result = _PR_MD_PUT_ENV(string);
    1.68 +    _PR_UNLOCK_ENV();
    1.69 +    return (result)? PR_FAILURE : PR_SUCCESS;
    1.70 +}