Move platform_thread to base/threading and put in the base namespace. I left ...

base/platform_thread_posix.cc

-// Copyright (c) 2006-2008 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.
-
-#include "base/platform_thread.h"
-
-#include <errno.h>
-#include <sched.h>
-
-#include "base/logging.h"
-#include "base/safe_strerror_posix.h"
-#include "base/scoped_ptr.h"
-#include "base/thread_restrictions.h"
-
-#if defined(OS_MACOSX)
-#include <mach/mach.h>
-#include <sys/resource.h>
-#include <algorithm>
-#endif
-
-#if defined(OS_LINUX)
-#include <dlfcn.h>
-#include <sys/prctl.h>
-#include <sys/syscall.h>
-#include <unistd.h>
-#endif
-
-#if defined(OS_NACL)
-#include <sys/nacl_syscalls.h>
-#endif
-
-#if defined(OS_MACOSX)
-namespace base {
-void InitThreading();
-}  // namespace base
-#endif
-
-namespace {
-
-struct ThreadParams {
-  PlatformThread::Delegate* delegate;
-  bool joinable;
-};
-
-}  // namespace
-
-static void* ThreadFunc(void* params) {
-  ThreadParams* thread_params = static_cast<ThreadParams*>(params);
-  PlatformThread::Delegate* delegate = thread_params->delegate;
-  if (!thread_params->joinable)
-    base::ThreadRestrictions::SetSingletonAllowed(false);
-  delete thread_params;
-  delegate->ThreadMain();
-  return NULL;
-}
-
-// static
-PlatformThreadId PlatformThread::CurrentId() {
-  // Pthreads doesn't have the concept of a thread ID, so we have to reach down
-  // into the kernel.
-#if defined(OS_MACOSX)
-  return mach_thread_self();
-#elif defined(OS_LINUX)
-  return syscall(__NR_gettid);
-#elif defined(OS_FREEBSD)
-  // TODO(BSD): find a better thread ID
-  return reinterpret_cast<int64>(pthread_self());
-#elif defined(OS_NACL)
-  return pthread_self();
-#endif
-}
-
-// static
-void PlatformThread::YieldCurrentThread() {
-  sched_yield();
-}
-
-// static
-void PlatformThread::Sleep(int duration_ms) {
-  struct timespec sleep_time, remaining;
-
-  // Contains the portion of duration_ms >= 1 sec.
-  sleep_time.tv_sec = duration_ms / 1000;
-  duration_ms -= sleep_time.tv_sec * 1000;
-
-  // Contains the portion of duration_ms < 1 sec.
-  sleep_time.tv_nsec = duration_ms * 1000 * 1000;  // nanoseconds.
-
-  while (nanosleep(&sleep_time, &remaining) == -1 && errno == EINTR)
-    sleep_time = remaining;
-}
-
-// Linux SetName is currently disabled, as we need to distinguish between
-// helper threads (where it's ok to make this call) and the main thread
-// (where making this call renames our process, causing tools like killall
-// to stop working).
-#if 0 && defined(OS_LINUX)
-// static
-void PlatformThread::SetName(const char* name) {
-  // http://0pointer.de/blog/projects/name-your-threads.html
-
-  // glibc recently added support for pthread_setname_np, but it's not
-  // commonly available yet.  So test for it at runtime.
-  int (*dynamic_pthread_setname_np)(pthread_t, const char*);
-  *reinterpret_cast<void**>(&dynamic_pthread_setname_np) =
-      dlsym(RTLD_DEFAULT, "pthread_setname_np");
-
-  if (dynamic_pthread_setname_np) {
-    // This limit comes from glibc, which gets it from the kernel
-    // (TASK_COMM_LEN).
-    const int kMaxNameLength = 15;
-    std::string shortened_name = std::string(name).substr(0, kMaxNameLength);
-    int err = dynamic_pthread_setname_np(pthread_self(),
-                                         shortened_name.c_str());
-    if (err < 0)
-      LOG(ERROR) << "pthread_setname_np: " << safe_strerror(err);
-  } else {
-    // Implementing this function without glibc is simple enough.  (We
-    // don't do the name length clipping as above because it will be
-    // truncated by the callee (see TASK_COMM_LEN above).)
-    int err = prctl(PR_SET_NAME, name);
-    if (err < 0)
-      PLOG(ERROR) << "prctl(PR_SET_NAME)";
-  }
-}
-#elif defined(OS_MACOSX)
-// Mac is implemented in platform_thread_mac.mm.
-#else
-// static
-void PlatformThread::SetName(const char* name) {
-  // Leave it unimplemented.
-
-  // (This should be relatively simple to implement for the BSDs; I
-  // just don't have one handy to test the code on.)
-}
-#endif  // defined(OS_LINUX)
-
-namespace {
-
-bool CreateThread(size_t stack_size, bool joinable,
-                  PlatformThread::Delegate* delegate,
-                  PlatformThreadHandle* thread_handle) {
-#if defined(OS_MACOSX)
-  base::InitThreading();
-#endif  // OS_MACOSX
-
-  bool success = false;
-  pthread_attr_t attributes;
-  pthread_attr_init(&attributes);
-
-  // Pthreads are joinable by default, so only specify the detached attribute if
-  // the thread should be non-joinable.
-  if (!joinable) {
-    pthread_attr_setdetachstate(&attributes, PTHREAD_CREATE_DETACHED);
-  }
-
-#if defined(OS_MACOSX)
-  // The Mac OS X default for a pthread stack size is 512kB.
-  // Libc-594.1.4/pthreads/pthread.c's pthread_attr_init uses
-  // DEFAULT_STACK_SIZE for this purpose.
-  //
-  // 512kB isn't quite generous enough for some deeply recursive threads that
-  // otherwise request the default stack size by specifying 0. Here, adopt
-  // glibc's behavior as on Linux, which is to use the current stack size
-  // limit (ulimit -s) as the default stack size. See
-  // glibc-2.11.1/nptl/nptl-init.c's __pthread_initialize_minimal_internal. To
-  // avoid setting the limit below the Mac OS X default or the minimum usable
-  // stack size, these values are also considered. If any of these values
-  // can't be determined, or if stack size is unlimited (ulimit -s unlimited),
-  // stack_size is left at 0 to get the system default.
-  //
-  // Mac OS X normally only applies ulimit -s to the main thread stack. On
-  // contemporary OS X and Linux systems alike, this value is generally 8MB
-  // or in that neighborhood.
-  if (stack_size == 0) {
-    size_t default_stack_size;
-    struct rlimit stack_rlimit;
-    if (pthread_attr_getstacksize(&attributes, &default_stack_size) == 0 &&
-        getrlimit(RLIMIT_STACK, &stack_rlimit) == 0 &&
-        stack_rlimit.rlim_cur != RLIM_INFINITY) {
-      stack_size = std::max(std::max(default_stack_size,
-                                     static_cast<size_t>(PTHREAD_STACK_MIN)),
-                            static_cast<size_t>(stack_rlimit.rlim_cur));
-    }
-  }
-#endif  // OS_MACOSX
-
-  if (stack_size > 0)
-    pthread_attr_setstacksize(&attributes, stack_size);
-
-  ThreadParams* params = new ThreadParams;
-  params->delegate = delegate;
-  params->joinable = joinable;
-  success = !pthread_create(thread_handle, &attributes, ThreadFunc, params);
-
-  pthread_attr_destroy(&attributes);
-  if (!success)
-    delete params;
-  return success;
-}
-
-}  // anonymous namespace
-
-// static
-bool PlatformThread::Create(size_t stack_size, Delegate* delegate,
-                            PlatformThreadHandle* thread_handle) {
-  return CreateThread(stack_size, true /* joinable thread */,
-                      delegate, thread_handle);
-}
-
-// static
-bool PlatformThread::CreateNonJoinable(size_t stack_size, Delegate* delegate) {
-  PlatformThreadHandle unused;
-
-  bool result = CreateThread(stack_size, false /* non-joinable thread */,
-                             delegate, &unused);
-  return result;
-}
-
-// static
-void PlatformThread::Join(PlatformThreadHandle thread_handle) {
-  // Joining another thread may block the current thread for a long time, since
-  // the thread referred to by |thread_handle| may still be running long-lived /
-  // blocking tasks.
-  base::ThreadRestrictions::AssertIOAllowed();
-  pthread_join(thread_handle, NULL);
-}