diff options
author | Moonchild <mcwerewolf@gmail.com> | 2018-05-04 09:09:10 +0200 |
---|---|---|
committer | GitHub <noreply@github.com> | 2018-05-04 09:09:10 +0200 |
commit | 4a2aeb152e48c44efa57c140660e99792f4dd350 (patch) | |
tree | 7b786de2b175122814a53232268b1147a8bd0bfb /security/sandbox/chromium/base/threading/thread_local.h | |
parent | 20532e13937ab5fc8efcb2bfc4c0070dace40cd1 (diff) | |
parent | f265784e8cabaff17f4554cf2bd2c30217b6ec0f (diff) | |
download | UXP-4a2aeb152e48c44efa57c140660e99792f4dd350.tar UXP-4a2aeb152e48c44efa57c140660e99792f4dd350.tar.gz UXP-4a2aeb152e48c44efa57c140660e99792f4dd350.tar.lz UXP-4a2aeb152e48c44efa57c140660e99792f4dd350.tar.xz UXP-4a2aeb152e48c44efa57c140660e99792f4dd350.zip |
Merge pull request #323 from MoonchildProductions/nuke-sandbox
Nuke sandbox
Diffstat (limited to 'security/sandbox/chromium/base/threading/thread_local.h')
-rw-r--r-- | security/sandbox/chromium/base/threading/thread_local.h | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/security/sandbox/chromium/base/threading/thread_local.h b/security/sandbox/chromium/base/threading/thread_local.h deleted file mode 100644 index f40420cd2..000000000 --- a/security/sandbox/chromium/base/threading/thread_local.h +++ /dev/null @@ -1,134 +0,0 @@ -// Copyright (c) 2011 The Chromium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -// WARNING: Thread local storage is a bit tricky to get right. Please make -// sure that this is really the proper solution for what you're trying to -// achieve. Don't prematurely optimize, most likely you can just use a Lock. -// -// These classes implement a wrapper around the platform's TLS storage -// mechanism. On construction, they will allocate a TLS slot, and free the -// TLS slot on destruction. No memory management (creation or destruction) is -// handled. This means for uses of ThreadLocalPointer, you must correctly -// manage the memory yourself, these classes will not destroy the pointer for -// you. There are no at-thread-exit actions taken by these classes. -// -// ThreadLocalPointer<Type> wraps a Type*. It performs no creation or -// destruction, so memory management must be handled elsewhere. The first call -// to Get() on a thread will return NULL. You can update the pointer with a -// call to Set(). -// -// ThreadLocalBoolean wraps a bool. It will default to false if it has never -// been set otherwise with Set(). -// -// Thread Safety: An instance of ThreadLocalStorage is completely thread safe -// once it has been created. If you want to dynamically create an instance, -// you must of course properly deal with safety and race conditions. This -// means a function-level static initializer is generally inappropiate. -// -// In Android, the system TLS is limited, the implementation is backed with -// ThreadLocalStorage. -// -// Example usage: -// // My class is logically attached to a single thread. We cache a pointer -// // on the thread it was created on, so we can implement current(). -// MyClass::MyClass() { -// DCHECK(Singleton<ThreadLocalPointer<MyClass> >::get()->Get() == NULL); -// Singleton<ThreadLocalPointer<MyClass> >::get()->Set(this); -// } -// -// MyClass::~MyClass() { -// DCHECK(Singleton<ThreadLocalPointer<MyClass> >::get()->Get() != NULL); -// Singleton<ThreadLocalPointer<MyClass> >::get()->Set(NULL); -// } -// -// // Return the current MyClass associated with the calling thread, can be -// // NULL if there isn't a MyClass associated. -// MyClass* MyClass::current() { -// return Singleton<ThreadLocalPointer<MyClass> >::get()->Get(); -// } - -#ifndef BASE_THREADING_THREAD_LOCAL_H_ -#define BASE_THREADING_THREAD_LOCAL_H_ - -#include "base/base_export.h" -#include "base/macros.h" -#include "base/threading/thread_local_storage.h" -#include "build/build_config.h" - -#if defined(OS_POSIX) -#include <pthread.h> -#endif - -namespace base { -namespace internal { - -// Helper functions that abstract the cross-platform APIs. Do not use directly. -struct BASE_EXPORT ThreadLocalPlatform { -#if defined(OS_WIN) - typedef unsigned long SlotType; -#elif defined(OS_ANDROID) - typedef ThreadLocalStorage::StaticSlot SlotType; -#elif defined(OS_POSIX) - typedef pthread_key_t SlotType; -#endif - - static void AllocateSlot(SlotType* slot); - static void FreeSlot(SlotType slot); - static void* GetValueFromSlot(SlotType slot); - static void SetValueInSlot(SlotType slot, void* value); -}; - -} // namespace internal - -template <typename Type> -class ThreadLocalPointer { - public: - ThreadLocalPointer() : slot_() { - internal::ThreadLocalPlatform::AllocateSlot(&slot_); - } - - ~ThreadLocalPointer() { - internal::ThreadLocalPlatform::FreeSlot(slot_); - } - - Type* Get() { - return static_cast<Type*>( - internal::ThreadLocalPlatform::GetValueFromSlot(slot_)); - } - - void Set(Type* ptr) { - internal::ThreadLocalPlatform::SetValueInSlot( - slot_, const_cast<void*>(static_cast<const void*>(ptr))); - } - - private: - typedef internal::ThreadLocalPlatform::SlotType SlotType; - - SlotType slot_; - - DISALLOW_COPY_AND_ASSIGN(ThreadLocalPointer<Type>); -}; - -class ThreadLocalBoolean { - public: - ThreadLocalBoolean() {} - ~ThreadLocalBoolean() {} - - bool Get() { - return tlp_.Get() != NULL; - } - - void Set(bool val) { - tlp_.Set(val ? this : NULL); - } - - private: - ThreadLocalPointer<void> tlp_; - - DISALLOW_COPY_AND_ASSIGN(ThreadLocalBoolean); -}; - -} // namespace base - -#endif // BASE_THREADING_THREAD_LOCAL_H_ |