зеркало из https://github.com/mozilla/gecko-dev.git
127 строки
2.8 KiB
C++
127 строки
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <pthread.h>
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#include <string.h>
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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#include <android/log.h>
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#include <vector>
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#define NS_EXPORT __attribute__ ((visibility("default")))
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/* Android doesn't have pthread_atfork(), so we need to use our own. */
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struct AtForkFuncs {
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void (*prepare)(void);
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void (*parent)(void);
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void (*child)(void);
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};
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static std::vector<AtForkFuncs> atfork;
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#ifdef MOZ_WIDGET_GONK
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#include "cpuacct.h"
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#define WRAP(x) x
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extern "C" NS_EXPORT int
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timer_create(clockid_t, struct sigevent*, timer_t*)
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{
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__android_log_print(ANDROID_LOG_ERROR, "BionicGlue", "timer_create not supported!");
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abort();
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return -1;
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}
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#else
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#define cpuacct_add(x)
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#define WRAP(x) __wrap_##x
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#endif
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extern "C" NS_EXPORT int
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WRAP(pthread_atfork)(void (*prepare)(void), void (*parent)(void), void (*child)(void))
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{
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AtForkFuncs funcs;
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funcs.prepare = prepare;
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funcs.parent = parent;
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funcs.child = child;
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atfork.push_back(funcs);
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return 0;
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}
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extern "C" pid_t __fork(void);
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extern "C" NS_EXPORT pid_t
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WRAP(fork)(void)
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{
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pid_t pid;
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for (std::vector<AtForkFuncs>::reverse_iterator it = atfork.rbegin();
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it < atfork.rend(); ++it)
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if (it->prepare)
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it->prepare();
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switch ((pid = __fork())) {
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case 0:
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cpuacct_add(getuid());
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for (std::vector<AtForkFuncs>::iterator it = atfork.begin();
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it < atfork.end(); ++it)
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if (it->child)
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it->child();
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break;
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default:
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for (std::vector<AtForkFuncs>::iterator it = atfork.begin();
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it < atfork.end(); ++it)
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if (it->parent)
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it->parent();
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}
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return pid;
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}
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extern "C" NS_EXPORT int
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WRAP(raise)(int sig)
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{
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return pthread_kill(pthread_self(), sig);
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}
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/*
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* The following wrappers for PR_Xxx are needed until we can get
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* PR_DuplicateEnvironment landed in NSPR.
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* See see bug 772734 and bug 773414.
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*
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* We can't #include the pr headers here, and we can't call any of the
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* PR/PL functions either, so we just reimplemnt using native code.
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*/
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static pthread_mutex_t _pr_envLock = PTHREAD_MUTEX_INITIALIZER;
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extern "C" NS_EXPORT char*
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__wrap_PR_GetEnv(const char *var)
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{
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char *ev;
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pthread_mutex_lock(&_pr_envLock);
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ev = getenv(var);
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pthread_mutex_unlock(&_pr_envLock);
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return ev;
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}
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extern "C" NS_EXPORT int
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__wrap_PR_SetEnv(const char *string)
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{
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int result;
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if ( !strchr(string, '=')) return(-1);
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pthread_mutex_lock(&_pr_envLock);
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result = putenv(string);
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pthread_mutex_unlock(&_pr_envLock);
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return (result)? -1 : 0;
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}
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extern "C" NS_EXPORT pthread_mutex_t *
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PR_GetEnvLock(void)
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{
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return &_pr_envLock;
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}
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