1 // Copyright 2013 The Chromium Authors
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/process_iterator.h"
6 #include "build/build_config.h"
7
8 namespace base {
9
10 #if BUILDFLAG(IS_POSIX) || BUILDFLAG(IS_FUCHSIA)
ProcessEntry()11 ProcessEntry::ProcessEntry() : pid_(0), ppid_(0), gid_(0) {}
12 ProcessEntry::ProcessEntry(const ProcessEntry& other) = default;
13 ProcessEntry::~ProcessEntry() = default;
14 #endif
15
NextProcessEntry()16 const ProcessEntry* ProcessIterator::NextProcessEntry() {
17 bool result = false;
18 do {
19 result = CheckForNextProcess();
20 } while (result && !IncludeEntry());
21 if (result)
22 return &entry_;
23 return nullptr;
24 }
25
Snapshot()26 ProcessIterator::ProcessEntries ProcessIterator::Snapshot() {
27 ProcessEntries found;
28 while (const ProcessEntry* process_entry = NextProcessEntry()) {
29 found.push_back(*process_entry);
30 }
31 return found;
32 }
33
IncludeEntry()34 bool ProcessIterator::IncludeEntry() {
35 return !filter_ || filter_->Includes(entry_);
36 }
37
NamedProcessIterator(const FilePath::StringType & executable_name,const ProcessFilter * filter,bool use_prefix_match)38 NamedProcessIterator::NamedProcessIterator(
39 const FilePath::StringType& executable_name,
40 const ProcessFilter* filter,
41 bool use_prefix_match)
42 : ProcessIterator(filter),
43 executable_name_(executable_name),
44 use_prefix_match_(use_prefix_match) {
45 #if BUILDFLAG(IS_ANDROID)
46 // On Android, the process name contains only the last 15 characters, which
47 // is in file /proc/<pid>/stat, the string between open parenthesis and close
48 // parenthesis. Please See ProcessIterator::CheckForNextProcess for details.
49 // Now if the length of input process name is greater than 15, only save the
50 // last 15 characters.
51 if (executable_name_.size() > 15) {
52 executable_name_ = FilePath::StringType(executable_name_,
53 executable_name_.size() - 15, 15);
54 }
55 #endif
56 }
57
58 NamedProcessIterator::~NamedProcessIterator() = default;
59
GetProcessCount(const FilePath::StringType & executable_name,const ProcessFilter * filter)60 int GetProcessCount(const FilePath::StringType& executable_name,
61 const ProcessFilter* filter) {
62 int count = 0;
63 NamedProcessIterator iter(executable_name, filter);
64 while (iter.NextProcessEntry())
65 ++count;
66 return count;
67 }
68
69 } // namespace base
70