The Tor Browser: nsprpub/pr/src/misc/prenv.c@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include <string.h>

     7 #include "primpl.h"

     9 /* Lock used to lock the environment */

    10 #if defined(_PR_NO_PREEMPT)

    11 #define _PR_NEW_LOCK_ENV()

    12 #define _PR_DELETE_LOCK_ENV()

    13 #define _PR_LOCK_ENV()

    14 #define _PR_UNLOCK_ENV()

    15 #elif defined(_PR_LOCAL_THREADS_ONLY)

    16 extern _PRCPU * _pr_primordialCPU;

    17 static PRIntn _is;

    18 #define _PR_NEW_LOCK_ENV()

    19 #define _PR_DELETE_LOCK_ENV()

    20 #define _PR_LOCK_ENV() if (_pr_primordialCPU) _PR_INTSOFF(_is);

    21 #define _PR_UNLOCK_ENV() if (_pr_primordialCPU) _PR_INTSON(_is);

    22 #else

    23 static PRLock *_pr_envLock = NULL;

    24 #define _PR_NEW_LOCK_ENV() {_pr_envLock = PR_NewLock();}

    25 #define _PR_DELETE_LOCK_ENV() \

    26     { if (_pr_envLock) { PR_DestroyLock(_pr_envLock); _pr_envLock = NULL; } }

    27 #define _PR_LOCK_ENV() { if (_pr_envLock) PR_Lock(_pr_envLock); }

    28 #define _PR_UNLOCK_ENV() { if (_pr_envLock) PR_Unlock(_pr_envLock); }

    29 #endif

    31 /************************************************************************/

    33 void _PR_InitEnv(void)

    34 {

    35 	_PR_NEW_LOCK_ENV();

    36 }

    38 void _PR_CleanupEnv(void)

    39 {

    40     _PR_DELETE_LOCK_ENV();

    41 }

    43 PR_IMPLEMENT(char*) PR_GetEnv(const char *var)

    44 {

    45     char *ev;

    47     if (!_pr_initialized) _PR_ImplicitInitialization();

    49     _PR_LOCK_ENV();

    50     ev = _PR_MD_GET_ENV(var);

    51     _PR_UNLOCK_ENV();

    52     return ev;

    53 }

    55 PR_IMPLEMENT(PRStatus) PR_SetEnv(const char *string)

    56 {

    57     PRIntn result;

    59     if (!_pr_initialized) _PR_ImplicitInitialization();

    61     if ( !strchr(string, '=')) return(PR_FAILURE);

    63     _PR_LOCK_ENV();

    64     result = _PR_MD_PUT_ENV(string);

    65     _PR_UNLOCK_ENV();

    66     return (result)? PR_FAILURE : PR_SUCCESS;

    67 }

The Tor Browser / file revision