Abseil Common Libraries (C++) (grcp 依赖)
https://abseil.io/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
48 lines
1.7 KiB
48 lines
1.7 KiB
// Copyright 2017 The Abseil Authors. |
|
// |
|
// Licensed under the Apache License, Version 2.0 (the "License"); |
|
// you may not use this file except in compliance with the License. |
|
// You may obtain a copy of the License at |
|
// |
|
// http://www.apache.org/licenses/LICENSE-2.0 |
|
// |
|
// Unless required by applicable law or agreed to in writing, software |
|
// distributed under the License is distributed on an "AS IS" BASIS, |
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
// See the License for the specific language governing permissions and |
|
// limitations under the License. |
|
|
|
#ifndef ABSL_BASE_INTERNAL_PER_THREAD_TLS_H_ |
|
#define ABSL_BASE_INTERNAL_PER_THREAD_TLS_H_ |
|
|
|
// This header defines two macros: |
|
// If the platform supports thread-local storage: |
|
// ABSL_PER_THREAD_TLS_KEYWORD is the C keyword needed to declare a |
|
// thread-local variable ABSL_PER_THREAD_TLS is 1 |
|
// |
|
// Otherwise: |
|
// ABSL_PER_THREAD_TLS_KEYWORD is empty |
|
// ABSL_PER_THREAD_TLS is 0 |
|
// |
|
// Microsoft C supports thread-local storage. |
|
// GCC supports it if the appropriate version of glibc is available, |
|
// which the programme can indicate by defining ABSL_HAVE_TLS |
|
|
|
#include "absl/base/port.h" // For ABSL_HAVE_TLS |
|
|
|
#if defined(ABSL_PER_THREAD_TLS) |
|
#error ABSL_PER_THREAD_TLS cannot be directly set |
|
#elif defined(ABSL_PER_THREAD_TLS_KEYWORD) |
|
#error ABSL_PER_THREAD_TLS_KEYWORD cannot be directly set |
|
#elif defined(ABSL_HAVE_TLS) |
|
#define ABSL_PER_THREAD_TLS_KEYWORD __thread |
|
#define ABSL_PER_THREAD_TLS 1 |
|
#elif defined(_MSC_VER) |
|
#define ABSL_PER_THREAD_TLS_KEYWORD __declspec(thread) |
|
#define ABSL_PER_THREAD_TLS 1 |
|
#else |
|
#define ABSL_PER_THREAD_TLS_KEYWORD |
|
#define ABSL_PER_THREAD_TLS 0 |
|
#endif |
|
|
|
#endif // ABSL_BASE_INTERNAL_PER_THREAD_TLS_H_
|
|
|