/* * Copyright (c) Meta Platforms, Inc. and affiliates. * * 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. */ #pragma once #include <cerrno> #include <folly/CPortability.h> #include <folly/Portability.h> #if !defined(_WIN32) #include <unistd.h> #include <sys/syscall.h> #if defined(__APPLE__) #define FOLLY_SYS_gettid … #elif defined(SYS_gettid) #define FOLLY_SYS_gettid … #else #define FOLLY_SYS_gettid … #endif #endif namespace folly { namespace detail { // linux_syscall // // Follows the interface of syscall(2), as described for linux. Other platforms // offer compatible interfaces. Defined for all platforms, whereas syscall(2) // is only defined on some platforms and is only exported by unistd.h on those // platforms which have unistd.h. // // Note: This uses C++ variadic args while syscall(2) uses C variadic args, // which have different signatures and which use different calling conventions. // // Note: Some syscall numbers are specified by POSIX but some are specific to // each platform and vary by operating system and architecture. Caution is // required. // // mimic: syscall(2), linux template <typename... A> FOLLY_ERASE long linux_syscall(long number, A... a) { … } } // namespace detail } // namespace folly
Codebase Browser
folly