base/process_util.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_util.h"
   6
   7 namespace base {
   8
   9 #if defined(OS_POSIX)
  10 ProcessEntry::ProcessEntry() : pid_(0), ppid_(0), gid_(0) {}
  11 ProcessEntry::~ProcessEntry() {}
  12 #endif
  13
  14 int GetProcessCount(const FilePath::StringType& executable_name,
  15                     const ProcessFilter* filter) {
  16   int count = 0;
  17   NamedProcessIterator iter(executable_name, filter);
  18   while (iter.NextProcessEntry())
  19     ++count;
  20   return count;
  21 }
  22
  23 bool KillProcesses(const FilePath::StringType& executable_name, int exit_code,
  24                    const ProcessFilter* filter) {
  25   bool result = true;
  26   NamedProcessIterator iter(executable_name, filter);
  27   while (const ProcessEntry* entry = iter.NextProcessEntry()) {
  28 #if defined(OS_WIN)
  29     result &= KillProcessById(entry->pid(), exit_code, true);
  30 #else
  31     result &= KillProcess(entry->pid(), exit_code, true);
  32 #endif
  33   }
  34   return result;
  35 }
  36
  37 const ProcessEntry* ProcessIterator::NextProcessEntry() {
  38   bool result = false;
  39   do {
  40     result = CheckForNextProcess();
  41   } while (result && !IncludeEntry());
  42   if (result)
  43     return &entry_;
  44   return NULL;
  45 }
  46
  47 ProcessIterator::ProcessEntries ProcessIterator::Snapshot() {
  48   ProcessEntries found;
  49   while (const ProcessEntry* process_entry = NextProcessEntry()) {
  50     found.push_back(*process_entry);
  51   }
  52   return found;
  53 }
  54
  55 bool ProcessIterator::IncludeEntry() {
  56   return !filter_ || filter_->Includes(entry_);
  57 }
  58
  59 NamedProcessIterator::NamedProcessIterator(
  60     const FilePath::StringType& executable_name,
  61     const ProcessFilter* filter) : ProcessIterator(filter),
  62                                    executable_name_(executable_name) {
  63 #if defined(OS_ANDROID)
  64   // On Android, the process name contains only the last 15 characters, which
  65   // is in file /proc/<pid>/stat, the string between open parenthesis and close
  66   // parenthesis. Please See ProcessIterator::CheckForNextProcess for details.
  67   // Now if the length of input process name is greater than 15, only save the
  68   // last 15 characters.
  69   if (executable_name_.size() > 15) {
  70     executable_name_ = FilePath::StringType(executable_name_,
  71                                             executable_name_.size() - 15, 15);
  72   }
  73 #endif
  74 }
  75
  76 NamedProcessIterator::~NamedProcessIterator() {
  77 }
  78
  79 }  // namespace base