base/process_posix.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/process.h"
   6
   7 #include <sys/types.h>
   8 #include <sys/time.h>
   9 #include <sys/resource.h>
  10
  11 #include "base/process_util.h"
  12 #include "base/logging.h"
  13
  14 namespace base {
  15
  16 // static
  17 Process Process::Current() {
  18   return Process(GetCurrentProcessHandle());
  19 }
  20
  21 ProcessId Process::pid() const {
  22   if (process_ == 0)
  23     return 0;
  24
  25   return GetProcId(process_);
  26 }
  27
  28 bool Process::is_current() const {
  29   return process_ == GetCurrentProcessHandle();
  30 }
  31
  32 void Process::Close() {
  33   process_ = 0;
  34   // if the process wasn't terminated (so we waited) or the state
  35   // wasn't already collected w/ a wait from process_utils, we're gonna
  36   // end up w/ a zombie when it does finally exit.
  37 }
  38
  39 void Process::Terminate(int result_code) {
  40   // result_code isn't supportable.
  41   if (!process_)
  42     return;
  43   // We don't wait here. It's the responsibility of other code to reap the
  44   // child.
  45   KillProcess(process_, result_code, false);
  46 }
  47
  48 #if !defined(OS_LINUX)
  49 bool Process::IsProcessBackgrounded() const {
  50   // See SetProcessBackgrounded().
  51   return false;
  52 }
  53
  54 bool Process::SetProcessBackgrounded(bool value) {
  55   // POSIX only allows lowering the priority of a process, so if we
  56   // were to lower it we wouldn't be able to raise it back to its initial
  57   // priority.
  58   return false;
  59 }
  60
  61 // static
  62 bool Process::CanBackgroundProcesses() {
  63   return false;
  64 }
  65
  66 #endif
  67
  68 int Process::GetPriority() const {
  69   DCHECK(process_);
  70   return getpriority(PRIO_PROCESS, process_);
  71 }
  72
  73 }  // namspace base