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Issue 8507022: Remove the remaining exit time destructors from base for linux and chromeos. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: comments Created 9 years, 1 month ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "base/process.h" 5 #include "base/process.h"
6 6
7 #include <errno.h> 7 #include <errno.h>
8 #include <sys/resource.h> 8 #include <sys/resource.h>
9 9
10 #include "base/file_util.h" 10 #include "base/file_util.h"
11 #include "base/logging.h" 11 #include "base/logging.h"
12 #include "base/stringprintf.h" 12 #include "base/stringprintf.h"
13 13
14 #if defined(OS_CHROMEOS)
15 static bool use_cgroups = false;
16 static bool cgroups_inited = false;
17 static const char kForegroundTasks[] =
18 "/tmp/cgroup/cpu/chrome_renderers/foreground/tasks";
19 static const char kBackgroundTasks[] =
20 "/tmp/cgroup/cpu/chrome_renderers/background/tasks";
21 static FilePath foreground_tasks;
22 static FilePath background_tasks;
23 #endif
24
25 namespace base { 14 namespace base {
26 15
27 #if defined(OS_CHROMEOS) 16 #if defined(OS_CHROMEOS)
28 // We are more aggressive in our lowering of background process priority 17 // We are more aggressive in our lowering of background process priority
29 // for chromeos as we have much more control over other processes running 18 // for chromeos as we have much more control over other processes running
30 // on the machine. 19 // on the machine.
31 const int kPriorityAdjustment = 19; 20 const int kPriorityAdjustment = 19;
32 #else 21 #else
33 const int kPriorityAdjustment = 5; 22 const int kPriorityAdjustment = 5;
34 #endif 23 #endif
35 24
36 bool Process::IsProcessBackgrounded() const { 25 bool Process::IsProcessBackgrounded() const {
37 DCHECK(process_); 26 DCHECK(process_);
38 return saved_priority_ == kUnsetProcessPriority; 27 return saved_priority_ == kUnsetProcessPriority;
39 } 28 }
40 29
41 bool Process::SetProcessBackgrounded(bool background) { 30 bool Process::SetProcessBackgrounded(bool background) {
42 DCHECK(process_); 31 DCHECK(process_);
43 32
44 #if defined(OS_CHROMEOS) 33 #if defined(OS_CHROMEOS)
34 static bool cgroups_inited = false;
35 static bool use_cgroups = false;
36
45 // Check for cgroups files. ChromeOS supports these by default. It creates 37 // Check for cgroups files. ChromeOS supports these by default. It creates
46 // a cgroup mount in /tmp/cgroup and then configures two cpu task groups, 38 // a cgroup mount in /tmp/cgroup and then configures two cpu task groups,
47 // one contains at most a single foreground renderer and the other contains 39 // one contains at most a single foreground renderer and the other contains
48 // all background renderers. This allows us to limit the impact of background 40 // all background renderers. This allows us to limit the impact of background
49 // renderers on foreground ones to a greater level than simple renicing. 41 // renderers on foreground ones to a greater level than simple renicing.
42 FilePath foreground_tasks(
43 "/tmp/cgroup/cpu/chrome_renderers/foreground/tasks");
44 FilePath background_tasks(
45 "/tmp/cgroup/cpu/chrome_renderers/background/tasks");
50 if (!cgroups_inited) { 46 if (!cgroups_inited) {
51 cgroups_inited = true; 47 cgroups_inited = true;
52 foreground_tasks = FilePath(kForegroundTasks);
53 background_tasks = FilePath(kBackgroundTasks);
54 file_util::FileSystemType foreground_type; 48 file_util::FileSystemType foreground_type;
55 file_util::FileSystemType background_type; 49 file_util::FileSystemType background_type;
56 use_cgroups = 50 use_cgroups =
57 file_util::GetFileSystemType(foreground_tasks, &foreground_type) && 51 file_util::GetFileSystemType(foreground_tasks, &foreground_type) &&
58 file_util::GetFileSystemType(background_tasks, &background_type) && 52 file_util::GetFileSystemType(background_tasks, &background_type) &&
59 foreground_type == file_util::FILE_SYSTEM_CGROUP && 53 foreground_type == file_util::FILE_SYSTEM_CGROUP &&
60 background_type == file_util::FILE_SYSTEM_CGROUP; 54 background_type == file_util::FILE_SYSTEM_CGROUP;
61 } 55 }
62 56
63 if (use_cgroups) { 57 if (use_cgroups) {
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125 } 119 }
126 int result = setpriority(PRIO_PROCESS, process_, saved_priority_); 120 int result = setpriority(PRIO_PROCESS, process_, saved_priority_);
127 // If we can't restore something has gone terribly wrong. 121 // If we can't restore something has gone terribly wrong.
128 DPCHECK(result == 0); 122 DPCHECK(result == 0);
129 saved_priority_ = kUnsetProcessPriority; 123 saved_priority_ = kUnsetProcessPriority;
130 return true; 124 return true;
131 } 125 }
132 } 126 }
133 127
134 } // namespace base 128 } // namespace base
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