Merge "Remove gettid symbol from cutils" into main am: 0c0dafae am:...

        "properties.cpp",

        "record_stream.cpp",

        "strlcpy.c",

        "threads.cpp",

    ],

    target: {

/*

** Copyright (C) 2007, The Android Open Source Project

**

** 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.

*/

#include <sys/types.h>

#if defined(__APPLE__)

#include <pthread.h>

#include <stdint.h>

#elif defined(__linux__)

#include <pthread.h>

#include <syscall.h>

#include <unistd.h>

#elif defined(_WIN32)

#include <windows.h>

#endif

#if defined(__BIONIC__) || defined(__GLIBC__) && __GLIBC_MINOR__ >= 30

// No definition needed for Android because we'll just pick up bionic's copy.

// No definition needed for Glibc >= 2.30 because it exposes its own copy.

#else

extern "C" pid_t gettid() {

#if defined(__APPLE__)

  uint64_t tid;

  pthread_threadid_np(NULL, &tid);

  return tid;

#elif defined(__linux__)

  return syscall(__NR_gettid);

#elif defined(_WIN32)

  return GetCurrentThreadId();

#endif

}

#endif