ef2eaefd2d6b2f79a0242817e35fbec9f7762f53/cpp/impl_2codegen_2port__platform_8h_source.html

/*

 *

 * Copyright 2015 gRPC 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 GRPC_IMPL_CODEGEN_PORT_PLATFORM_H

#define GRPC_IMPL_CODEGEN_PORT_PLATFORM_H


/*

 * Define GPR_BACKWARDS_COMPATIBILITY_MODE to try harder to be ABI

 * compatible with older platforms (currently only on Linux)

 * Causes:

 *  - some libc calls to be gotten via dlsym

 *  - some syscalls to be made directly

 */


/*

 * Defines GPR_ABSEIL_SYNC to use synchronization features from Abseil

 */

#ifndef GPR_ABSEIL_SYNC

/* #define GPR_ABSEIL_SYNC 1 */

#endif


/* Get windows.h included everywhere (we need it) */

#if defined(_WIN64) || defined(WIN64) || defined(_WIN32) || defined(WIN32)

#ifndef WIN32_LEAN_AND_MEAN

#define GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED

#define WIN32_LEAN_AND_MEAN

#endif /* WIN32_LEAN_AND_MEAN */


#ifndef NOMINMAX

#define GRPC_NOMINMX_WAS_NOT_DEFINED

#define NOMINMAX

#endif /* NOMINMAX */


#include <windows.h>


#ifndef _WIN32_WINNT

#error \

    "Please compile grpc with _WIN32_WINNT of at least 0x600 (aka Windows Vista)"

#else /* !defined(_WIN32_WINNT) */

#if (_WIN32_WINNT < 0x0600)

#error \

    "Please compile grpc with _WIN32_WINNT of at least 0x600 (aka Windows Vista)"

#endif /* _WIN32_WINNT < 0x0600 */

#endif /* defined(_WIN32_WINNT) */


#ifdef GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED

#undef GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED

#undef WIN32_LEAN_AND_MEAN

#endif /* GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED */


#ifdef GRPC_NOMINMAX_WAS_NOT_DEFINED

#undef GRPC_NOMINMAX_WAS_NOT_DEFINED

#undef NOMINMAX

#endif /* GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED */

#endif /* defined(_WIN64) || defined(WIN64) || defined(_WIN32) || \

          defined(WIN32) */


/* Override this file with one for your platform if you need to redefine

   things.  */


#if !defined(GPR_NO_AUTODETECT_PLATFORM)

#if defined(_WIN64) || defined(WIN64) || defined(_WIN32) || defined(WIN32)

#if defined(_WIN64) || defined(WIN64)

#define GPR_ARCH_64 1

#else

#define GPR_ARCH_32 1

#endif

#define GPR_PLATFORM_STRING "windows"

#define GPR_WINDOWS 1

#define GPR_WINDOWS_SUBPROCESS 1

#define GPR_WINDOWS_ENV

#ifdef __MSYS__

#define GPR_GETPID_IN_UNISTD_H 1

#define GPR_MSYS_TMPFILE

#define GPR_POSIX_LOG

#define GPR_POSIX_STRING

#define GPR_POSIX_TIME

#else

#define GPR_GETPID_IN_PROCESS_H 1

#define GPR_WINDOWS_TMPFILE

#define GPR_WINDOWS_LOG

#define GPR_WINDOWS_CRASH_HANDLER 1

#define GPR_WINDOWS_STRING

#define GPR_WINDOWS_TIME

#endif

#ifdef __GNUC__

#define GPR_GCC_ATOMIC 1

#define GPR_GCC_TLS 1

#else

#define GPR_WINDOWS_ATOMIC 1

#define GPR_MSVC_TLS 1

#endif

#elif defined(ANDROID) || defined(__ANDROID__)

#define GPR_PLATFORM_STRING "android"

#define GPR_ANDROID 1

// TODO(apolcyn): re-evaluate support for c-ares

// on android after upgrading our c-ares dependency.

// See https://github.com/grpc/grpc/issues/18038.

#define GRPC_ARES 0

#ifdef _LP64

#define GPR_ARCH_64 1

#else /* _LP64 */

#define GPR_ARCH_32 1

#endif /* _LP64 */

#define GPR_CPU_POSIX 1

#define GPR_GCC_SYNC 1

#define GPR_GCC_TLS 1

#define GPR_POSIX_ENV 1

#define GPR_POSIX_TMPFILE 1

#define GPR_ANDROID_LOG 1

#define GPR_POSIX_STRING 1

#define GPR_POSIX_SUBPROCESS 1

#define GPR_POSIX_SYNC 1

#define GPR_POSIX_TIME 1

#define GPR_HAS_PTHREAD_H 1

#define GPR_GETPID_IN_UNISTD_H 1

#define GPR_SUPPORT_CHANNELS_FROM_FD 1

#elif defined(__linux__)

#define GPR_PLATFORM_STRING "linux"

#ifndef _BSD_SOURCE

#define _BSD_SOURCE

#endif

#ifndef _DEFAULT_SOURCE

#define _DEFAULT_SOURCE

#endif

#ifndef _GNU_SOURCE

#define _GNU_SOURCE

#endif

#include <features.h>

#define GPR_CPU_LINUX 1

#define GPR_GCC_ATOMIC 1

#define GPR_GCC_TLS 1

#define GPR_LINUX 1

#define GPR_LINUX_LOG

#define GPR_SUPPORT_CHANNELS_FROM_FD 1

#define GPR_LINUX_ENV 1

#define GPR_POSIX_TMPFILE 1

#define GPR_POSIX_STRING 1

#define GPR_POSIX_SUBPROCESS 1

#define GPR_POSIX_SYNC 1

#define GPR_POSIX_TIME 1

#define GPR_HAS_PTHREAD_H 1

#define GPR_GETPID_IN_UNISTD_H 1

#ifdef _LP64

#define GPR_ARCH_64 1

#else /* _LP64 */

#define GPR_ARCH_32 1

#endif /* _LP64 */

#ifdef __GLIBC__

#define GPR_POSIX_CRASH_HANDLER 1

#define GPR_LINUX_PTHREAD_NAME 1

#include <linux/version.h>

#else /* musl libc */

#define GPR_MUSL_LIBC_COMPAT 1

#endif

#elif defined(__ASYLO__)

#define GPR_ARCH_64 1

#define GPR_CPU_POSIX 1

#define GPR_GCC_TLS 1

#define GPR_PLATFORM_STRING "asylo"

#define GPR_GCC_SYNC 1

#define GPR_POSIX_SYNC 1

#define GPR_POSIX_STRING 1

#define GPR_POSIX_LOG 1

#define GPR_POSIX_TIME 1

#define GPR_POSIX_ENV 1

#define GPR_ASYLO 1

#define GRPC_POSIX_SOCKET 1

#define GRPC_POSIX_SOCKETADDR

#define GRPC_POSIX_SOCKETUTILS 1

#define GRPC_TIMER_USE_GENERIC 1

#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1

#define GRPC_POSIX_WAKEUP_FD 1

#define GRPC_ARES 0

#define GPR_NO_AUTODETECT_PLATFORM 1

#elif defined(__APPLE__)

#include <Availability.h>

#include <TargetConditionals.h>

#ifndef _BSD_SOURCE

#define _BSD_SOURCE

#endif

#if TARGET_OS_IPHONE

#define GPR_PLATFORM_STRING "ios"

#define GPR_CPU_IPHONE 1

#define GPR_PTHREAD_TLS 1

#define GRPC_CFSTREAM 1

/* the c-ares resolver isn't safe to enable on iOS */

#define GRPC_ARES 0

#else /* TARGET_OS_IPHONE */

#define GPR_PLATFORM_STRING "osx"

#ifdef __MAC_OS_X_VERSION_MIN_REQUIRED

#if __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_7

#define GPR_CPU_IPHONE 1

#define GPR_PTHREAD_TLS 1

#else /* __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_7 */

#define GPR_CPU_POSIX 1

/* TODO(vjpai): there is a reported issue in bazel build for Mac where __thread

   in a header is currently not working (bazelbuild/bazel#4341). Remove

   the following conditional and use GPR_GCC_TLS when that is fixed */

#ifndef GRPC_BAZEL_BUILD

#define GPR_GCC_TLS 1

#else /* GRPC_BAZEL_BUILD */

#define GPR_PTHREAD_TLS 1

#endif /* GRPC_BAZEL_BUILD */

#define GPR_APPLE_PTHREAD_NAME 1

#endif

#else /* __MAC_OS_X_VERSION_MIN_REQUIRED */

#define GPR_CPU_POSIX 1

/* TODO(vjpai): Remove the following conditional and use only GPR_GCC_TLS

   when bazelbuild/bazel#4341 is fixed */

#ifndef GRPC_BAZEL_BUILD

#define GPR_GCC_TLS 1

#else /* GRPC_BAZEL_BUILD */

#define GPR_PTHREAD_TLS 1

#endif /* GRPC_BAZEL_BUILD */

#endif

#define GPR_POSIX_CRASH_HANDLER 1

#endif

#define GPR_APPLE 1

#define GPR_GCC_ATOMIC 1

#define GPR_POSIX_LOG 1

#define GPR_POSIX_ENV 1

#define GPR_POSIX_TMPFILE 1

#define GPR_POSIX_STRING 1

#define GPR_POSIX_SUBPROCESS 1

#define GPR_POSIX_SYNC 1

#define GPR_POSIX_TIME 1

#define GPR_HAS_PTHREAD_H 1

#define GPR_GETPID_IN_UNISTD_H 1

#ifndef GRPC_CFSTREAM

#define GPR_SUPPORT_CHANNELS_FROM_FD 1

#endif

#ifdef _LP64

#define GPR_ARCH_64 1

#else /* _LP64 */

#define GPR_ARCH_32 1

#endif /* _LP64 */

#elif defined(__FreeBSD__)

#define GPR_PLATFORM_STRING "freebsd"

#ifndef _BSD_SOURCE

#define _BSD_SOURCE

#endif

#define GPR_FREEBSD 1

#define GPR_CPU_POSIX 1

#define GPR_GCC_ATOMIC 1

#define GPR_GCC_TLS 1

#define GPR_POSIX_LOG 1

#define GPR_POSIX_ENV 1

#define GPR_POSIX_TMPFILE 1

#define GPR_POSIX_STRING 1

#define GPR_POSIX_SUBPROCESS 1

#define GPR_POSIX_SYNC 1

#define GPR_POSIX_TIME 1

#define GPR_HAS_PTHREAD_H 1

#define GPR_GETPID_IN_UNISTD_H 1

#define GPR_SUPPORT_CHANNELS_FROM_FD 1

#ifdef _LP64

#define GPR_ARCH_64 1

#else /* _LP64 */

#define GPR_ARCH_32 1

#endif /* _LP64 */

#elif defined(__OpenBSD__)

#define GPR_PLATFORM_STRING "openbsd"

#ifndef _BSD_SOURCE

#define _BSD_SOURCE

#endif

#define GPR_OPENBSD 1

#define GPR_CPU_POSIX 1

#define GPR_GCC_ATOMIC 1

#define GPR_GCC_TLS 1

#define GPR_POSIX_LOG 1

#define GPR_POSIX_ENV 1

#define GPR_POSIX_TMPFILE 1

#define GPR_POSIX_STRING 1

#define GPR_POSIX_SUBPROCESS 1

#define GPR_POSIX_SYNC 1

#define GPR_POSIX_TIME 1

#define GPR_HAS_PTHREAD_H 1

#define GPR_GETPID_IN_UNISTD_H 1

#define GPR_SUPPORT_CHANNELS_FROM_FD 1

#ifdef _LP64

#define GPR_ARCH_64 1

#else /* _LP64 */

#define GPR_ARCH_32 1

#endif /* _LP64 */

#elif defined(__sun) && defined(__SVR4)

#define GPR_PLATFORM_STRING "solaris"

#define GPR_SOLARIS 1

#define GPR_CPU_POSIX 1

#define GPR_GCC_ATOMIC 1

#define GPR_GCC_TLS 1

#define GPR_POSIX_LOG 1

#define GPR_POSIX_ENV 1

#define GPR_POSIX_TMPFILE 1

#define GPR_POSIX_STRING 1

#define GPR_POSIX_SUBPROCESS 1

#define GPR_POSIX_SYNC 1

#define GPR_POSIX_TIME 1

#define GPR_HAS_PTHREAD_H 1

#define GPR_GETPID_IN_UNISTD_H 1

#ifdef _LP64

#define GPR_ARCH_64 1

#else /* _LP64 */

#define GPR_ARCH_32 1

#endif /* _LP64 */

#elif defined(_AIX)

#define GPR_PLATFORM_STRING "aix"

#ifndef _ALL_SOURCE

#define _ALL_SOURCE

#endif

#define GPR_AIX 1

#define GPR_CPU_POSIX 1

#define GPR_GCC_ATOMIC 1

#define GPR_GCC_TLS 1

#define GPR_POSIX_LOG 1

#define GPR_POSIX_ENV 1

#define GPR_POSIX_TMPFILE 1

#define GPR_POSIX_STRING 1

#define GPR_POSIX_SUBPROCESS 1

#define GPR_POSIX_SYNC 1

#define GPR_POSIX_TIME 1

#define GPR_HAS_PTHREAD_H 1

#define GPR_GETPID_IN_UNISTD_H 1

#ifdef _LP64

#define GPR_ARCH_64 1

#else /* _LP64 */

#define GPR_ARCH_32 1

#endif /* _LP64 */

#elif defined(__native_client__)

#define GPR_PLATFORM_STRING "nacl"

#ifndef _BSD_SOURCE

#define _BSD_SOURCE

#endif

#ifndef _DEFAULT_SOURCE

#define _DEFAULT_SOURCE

#endif

#ifndef _GNU_SOURCE

#define _GNU_SOURCE

#endif

#define GPR_NACL 1

#define GPR_CPU_POSIX 1

#define GPR_GCC_ATOMIC 1

#define GPR_GCC_TLS 1

#define GPR_POSIX_LOG 1

#define GPR_POSIX_ENV 1

#define GPR_POSIX_TMPFILE 1

#define GPR_POSIX_STRING 1

#define GPR_POSIX_SUBPROCESS 1

#define GPR_POSIX_SYNC 1

#define GPR_POSIX_TIME 1

#define GPR_HAS_PTHREAD_H 1

#define GPR_GETPID_IN_UNISTD_H 1

#ifdef _LP64

#define GPR_ARCH_64 1

#else /* _LP64 */

#define GPR_ARCH_32 1

#endif /* _LP64 */

#elif defined(__Fuchsia__)

#define GPR_FUCHSIA 1

#define GPR_ARCH_64 1

#define GPR_PLATFORM_STRING "fuchsia"

#include <features.h>

// Specifying musl libc affects wrap_memcpy.c. It causes memmove() to be

// invoked.

#define GPR_MUSL_LIBC_COMPAT 1

#define GPR_CPU_POSIX 1

#define GPR_GCC_ATOMIC 1

#define GPR_PTHREAD_TLS 1

#define GPR_POSIX_LOG 1

#define GPR_POSIX_SYNC 1

#define GPR_POSIX_ENV 1

#define GPR_POSIX_TMPFILE 1

#define GPR_POSIX_SUBPROCESS 1

#define GPR_POSIX_SYNC 1

#define GPR_POSIX_STRING 1

#define GPR_POSIX_TIME 1

#define GPR_HAS_PTHREAD_H 1

#define GPR_GETPID_IN_UNISTD_H 1

#else

#error "Could not auto-detect platform"

#endif

#endif /* GPR_NO_AUTODETECT_PLATFORM */


#if defined(GPR_BACKWARDS_COMPATIBILITY_MODE)

/*

 * For backward compatibility mode, reset _FORTIFY_SOURCE to prevent

 * a library from having non-standard symbols such as __asprintf_chk.

 * This helps non-glibc systems such as alpine using musl to find symbols.

 */

#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0

#undef _FORTIFY_SOURCE

#define _FORTIFY_SOURCE 0

#endif

#endif


/*

 *  There are platforms for which TLS should not be used even though the

 * compiler makes it seem like it's supported (Android NDK < r12b for example).

 * This is primarily because of linker problems and toolchain misconfiguration:

 * TLS isn't supported until NDK r12b per

 * https://developer.android.com/ndk/downloads/revision_history.html

 * TLS also does not work with Android NDK if GCC is being used as the compiler

 * instead of Clang.

 * Since NDK r16, `__NDK_MAJOR__` and `__NDK_MINOR__` are defined in

 * <android/ndk-version.h>. For NDK < r16, users should define these macros,

 * e.g. `-D__NDK_MAJOR__=11 -D__NKD_MINOR__=0` for NDK r11. */

#if defined(__ANDROID__) && defined(GPR_GCC_TLS)

#if __has_include(<android/ndk-version.h>)

#include <android/ndk-version.h>

#endif /* __has_include(<android/ndk-version.h>) */

#if (defined(__clang__) && defined(__NDK_MAJOR__) && defined(__NDK_MINOR__) && \

     ((__NDK_MAJOR__ < 12) ||                                                  \

      ((__NDK_MAJOR__ == 12) && (__NDK_MINOR__ < 1)))) ||                      \

    (defined(__GNUC__) && !defined(__clang__))

#undef GPR_GCC_TLS

#define GPR_PTHREAD_TLS 1

#endif

#endif /*defined(__ANDROID__) && defined(GPR_GCC_TLS) */


#if defined(__has_include)

#if __has_include(<atomic>)

#define GRPC_HAS_CXX11_ATOMIC

#endif /* __has_include(<atomic>) */

#endif /* defined(__has_include) */


#ifndef GPR_PLATFORM_STRING

#warning "GPR_PLATFORM_STRING not auto-detected"

#define GPR_PLATFORM_STRING "unknown"

#endif


#ifdef GPR_GCOV

#undef GPR_FORBID_UNREACHABLE_CODE

#define GPR_FORBID_UNREACHABLE_CODE 1

#endif


#ifdef _MSC_VER

#if _MSC_VER < 1700

typedef __int8 int8_t;

typedef __int16 int16_t;

typedef __int32 int32_t;

typedef __int64 int64_t;

typedef unsigned __int8 uint8_t;

typedef unsigned __int16 uint16_t;

typedef unsigned __int32 uint32_t;

typedef unsigned __int64 uint64_t;

#else

#include <stdint.h>

#endif /* _MSC_VER < 1700 */

#else

#include <stdint.h>

#endif /* _MSC_VER */


/* Type of cycle clock implementation */

#ifdef GPR_LINUX

/* Disable cycle clock by default.

   TODO(soheil): enable when we support fallback for unstable cycle clocks.

#if defined(__i386__)

#define GPR_CYCLE_COUNTER_RDTSC_32 1

#elif defined(__x86_64__) || defined(__amd64__)

#define GPR_CYCLE_COUNTER_RDTSC_64 1

#else

#define GPR_CYCLE_COUNTER_FALLBACK 1

#endif

*/

#define GPR_CYCLE_COUNTER_FALLBACK 1

#else

#define GPR_CYCLE_COUNTER_FALLBACK 1

#endif /* GPR_LINUX */


/* Cache line alignment */

#ifndef GPR_CACHELINE_SIZE_LOG

#if defined(__i386__) || defined(__x86_64__)

#define GPR_CACHELINE_SIZE_LOG 6

#endif

#ifndef GPR_CACHELINE_SIZE_LOG

/* A reasonable default guess. Note that overestimates tend to waste more

   space, while underestimates tend to waste more time. */

#define GPR_CACHELINE_SIZE_LOG 6

#endif /* GPR_CACHELINE_SIZE_LOG */

#endif /* GPR_CACHELINE_SIZE_LOG */


#define GPR_CACHELINE_SIZE (1 << GPR_CACHELINE_SIZE_LOG)


/* scrub GCC_ATOMIC if it's not available on this compiler */

#if defined(GPR_GCC_ATOMIC) && !defined(__ATOMIC_RELAXED)

#undef GPR_GCC_ATOMIC

#define GPR_GCC_SYNC 1

#endif


/* Validate platform combinations */

#if defined(GPR_GCC_ATOMIC) + defined(GPR_GCC_SYNC) + \

        defined(GPR_WINDOWS_ATOMIC) !=                \

    1

#error Must define exactly one of GPR_GCC_ATOMIC, GPR_GCC_SYNC, GPR_WINDOWS_ATOMIC

#endif


#if defined(GPR_ARCH_32) + defined(GPR_ARCH_64) != 1

#error Must define exactly one of GPR_ARCH_32, GPR_ARCH_64

#endif


#if defined(GPR_CPU_LINUX) + defined(GPR_CPU_POSIX) + defined(GPR_WINDOWS) + \

        defined(GPR_CPU_IPHONE) + defined(GPR_CPU_CUSTOM) !=                 \

    1

#error Must define exactly one of GPR_CPU_LINUX, GPR_CPU_POSIX, GPR_WINDOWS, GPR_CPU_IPHONE, GPR_CPU_CUSTOM

#endif


#if defined(GPR_MSVC_TLS) + defined(GPR_GCC_TLS) + defined(GPR_PTHREAD_TLS) + \

        defined(GPR_CUSTOM_TLS) !=                                            \

    1

#error Must define exactly one of GPR_MSVC_TLS, GPR_GCC_TLS, GPR_PTHREAD_TLS, GPR_CUSTOM_TLS

#endif


/* maximum alignment needed for any type on this platform, rounded up to a

   power of two */

#define GPR_MAX_ALIGNMENT 16


#ifndef GRPC_ARES

#define GRPC_ARES 1

#endif


#ifndef GRPC_IF_NAMETOINDEX

#define GRPC_IF_NAMETOINDEX 1

#endif


#ifndef GRPC_MUST_USE_RESULT

#if defined(__GNUC__) && !defined(__MINGW32__)

#define GRPC_MUST_USE_RESULT __attribute__((warn_unused_result))

#define GPR_ALIGN_STRUCT(n) __attribute__((aligned(n)))

#else

#define GRPC_MUST_USE_RESULT

#define GPR_ALIGN_STRUCT(n)

#endif

#endif


#ifndef GRPC_UNUSED

#if defined(__GNUC__) && !defined(__MINGW32__)

#define GRPC_UNUSED __attribute__((unused))

#else

#define GRPC_UNUSED

#endif

#endif


#ifndef GPR_PRINT_FORMAT_CHECK

#ifdef __GNUC__

#define GPR_PRINT_FORMAT_CHECK(FORMAT_STR, ARGS) \

  __attribute__((format(printf, FORMAT_STR, ARGS)))

#else

#define GPR_PRINT_FORMAT_CHECK(FORMAT_STR, ARGS)

#endif

#endif /* GPR_PRINT_FORMAT_CHECK */


#if GPR_FORBID_UNREACHABLE_CODE

#define GPR_UNREACHABLE_CODE(STATEMENT)

#else

#define GPR_UNREACHABLE_CODE(STATEMENT)             \

  do {                                              \

    gpr_log(GPR_ERROR, "Should never reach here."); \

    abort();                                        \

    STATEMENT;                                      \

  } while (0)

#endif /* GPR_FORBID_UNREACHABLE_CODE */


#ifndef GPRAPI

#define GPRAPI

#endif


#ifndef GRPCAPI

#define GRPCAPI GPRAPI

#endif


#ifndef CENSUSAPI

#define CENSUSAPI GRPCAPI

#endif


#ifndef GPR_HAS_ATTRIBUTE

#ifdef __has_attribute

#define GPR_HAS_ATTRIBUTE(a) __has_attribute(a)

#else

#define GPR_HAS_ATTRIBUTE(a) 0

#endif

#endif /* GPR_HAS_ATTRIBUTE */


#ifndef GPR_HAS_FEATURE

#ifdef __has_feature

#define GPR_HAS_FEATURE(a) __has_feature(a)

#else

#define GPR_HAS_FEATURE(a) 0

#endif

#endif /* GPR_HAS_FEATURE */


#ifndef GPR_ATTRIBUTE_NOINLINE

#if GPR_HAS_ATTRIBUTE(noinline) || (defined(__GNUC__) && !defined(__clang__))

#define GPR_ATTRIBUTE_NOINLINE __attribute__((noinline))

#define GPR_HAS_ATTRIBUTE_NOINLINE 1

#else

#define GPR_ATTRIBUTE_NOINLINE

#endif

#endif /* GPR_ATTRIBUTE_NOINLINE */


#ifndef GPR_ATTRIBUTE_WEAK

/* Attribute weak is broken on LLVM/windows:

 * https://bugs.llvm.org/show_bug.cgi?id=37598 */

#if (GPR_HAS_ATTRIBUTE(weak) || (defined(__GNUC__) && !defined(__clang__))) && \

    !(defined(__llvm__) && defined(_WIN32))

#define GPR_ATTRIBUTE_WEAK __attribute__((weak))

#define GPR_HAS_ATTRIBUTE_WEAK 1

#else

#define GPR_ATTRIBUTE_WEAK

#endif

#endif /* GPR_ATTRIBUTE_WEAK */


#ifndef GPR_ATTRIBUTE_NO_TSAN /* (1) */

#if GPR_HAS_FEATURE(thread_sanitizer)

#define GPR_ATTRIBUTE_NO_TSAN __attribute__((no_sanitize("thread")))

#endif                        /* GPR_HAS_FEATURE */

#ifndef GPR_ATTRIBUTE_NO_TSAN /* (2) */

#define GPR_ATTRIBUTE_NO_TSAN

#endif /* GPR_ATTRIBUTE_NO_TSAN (2) */

#endif /* GPR_ATTRIBUTE_NO_TSAN (1) */


/* GRPC_TSAN_ENABLED will be defined, when compiled with thread sanitizer. */

#ifndef GRPC_TSAN_SUPPRESSED

#if defined(__SANITIZE_THREAD__)

#define GRPC_TSAN_ENABLED

#elif GPR_HAS_FEATURE(thread_sanitizer)

#define GRPC_TSAN_ENABLED

#endif

#endif


/* GRPC_ASAN_ENABLED will be defined, when compiled with address sanitizer. */

#ifndef GRPC_ASAN_SUPPRESSED

#if defined(__SANITIZE_ADDRESS__)

#define GRPC_ASAN_ENABLED

#elif GPR_HAS_FEATURE(address_sanitizer)

#define GRPC_ASAN_ENABLED

#endif

#endif


/* GRPC_ALLOW_EXCEPTIONS should be 0 or 1 if exceptions are allowed or not */

#ifndef GRPC_ALLOW_EXCEPTIONS

#ifdef GPR_WINDOWS

#if defined(_MSC_VER) && defined(_CPPUNWIND)

#define GRPC_ALLOW_EXCEPTIONS 1

#elif defined(__EXCEPTIONS)

#define GRPC_ALLOW_EXCEPTIONS 1

#else

#define GRPC_ALLOW_EXCEPTIONS 0

#endif

#else /* GPR_WINDOWS */

#ifdef __EXCEPTIONS

#define GRPC_ALLOW_EXCEPTIONS 1

#else /* __EXCEPTIONS */

#define GRPC_ALLOW_EXCEPTIONS 0

#endif /* __EXCEPTIONS */

#endif /* __GPR_WINDOWS */

#endif /* GRPC_ALLOW_EXCEPTIONS */


/* Use GPR_LIKELY only in cases where you are sure that a certain outcome is the

 * most likely. Ideally, also collect performance numbers to justify the claim.

 */

#ifdef __GNUC__

#define GPR_LIKELY(x) __builtin_expect((x), 1)

#define GPR_UNLIKELY(x) __builtin_expect((x), 0)

#else /* __GNUC__ */

#define GPR_LIKELY(x) (x)

#define GPR_UNLIKELY(x) (x)

#endif /* __GNUC__ */


#ifndef __STDC_FORMAT_MACROS

#define __STDC_FORMAT_MACROS

#endif


#endif /* GRPC_IMPL_CODEGEN_PORT_PLATFORM_H */