Split ProcessHandle and its related routines into base/process/process_handle.h.

base/process_util_linux.cc

-// Copyright (c) 2012 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/process_util.h"
-
-#include <dirent.h>
-#include <malloc.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include "base/file_util.h"
-#include "base/logging.h"
-#include "base/process/internal_linux.h"
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/string_split.h"
-#include "base/strings/string_util.h"
-#include "base/sys_info.h"
-#include "base/threading/thread_restrictions.h"
-
-namespace base {
-
-#if defined(USE_LINUX_BREAKPAD)
-size_t g_oom_size = 0U;
-#endif
-
-const char kProcSelfExe[] = "/proc/self/exe";
-
-ProcessId GetParentProcessId(ProcessHandle process) {
-  ProcessId pid =
-      internal::ReadProcStatsAndGetFieldAsInt(process, internal::VM_PPID);
-  if (pid)
-    return pid;
-  return -1;
-}
-
-FilePath GetProcessExecutablePath(ProcessHandle process) {
-  FilePath stat_file = internal::GetProcPidDir(process).Append("exe");
-  FilePath exe_name;
-  if (!file_util::ReadSymbolicLink(stat_file, &exe_name)) {
-    // No such process.  Happens frequently in e.g. TerminateAllChromeProcesses
-    return FilePath();
-  }
-  return exe_name;
-}
-
-int GetNumberOfThreads(ProcessHandle process) {
-  return internal::ReadProcStatsAndGetFieldAsInt(process,
-                                                 internal::VM_NUMTHREADS);
-}
-
-}  // namespace base