| // 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 "content/browser/android/content_startup_flags.h" |
| |
| #include "base/android/build_info.h" |
| #include "base/base_switches.h" |
| #include "base/command_line.h" |
| #include "base/logging.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/sys_info.h" |
| #include "cc/base/switches.h" |
| #include "content/public/browser/render_process_host.h" |
| #include "content/public/common/content_constants.h" |
| #include "content/public/common/content_switches.h" |
| #include "gpu/command_buffer/service/gpu_switches.h" |
| #include "ui/base/ui_base_switches.h" |
| #include "ui/native_theme/native_theme_switches.h" |
| |
| namespace content { |
| |
| void SetContentCommandLineFlags(bool single_process, |
| const std::string& plugin_descriptor) { |
| // May be called multiple times, to cover all possible program entry points. |
| static bool already_initialized = false; |
| if (already_initialized) |
| return; |
| already_initialized = true; |
| |
| base::CommandLine* parsed_command_line = |
| base::CommandLine::ForCurrentProcess(); |
| |
| int command_line_renderer_limit = -1; |
| if (parsed_command_line->HasSwitch(switches::kRendererProcessLimit)) { |
| std::string limit = parsed_command_line->GetSwitchValueASCII( |
| switches::kRendererProcessLimit); |
| int value; |
| if (base::StringToInt(limit, &value)) { |
| command_line_renderer_limit = std::max(0, value); |
| } |
| } |
| |
| if (command_line_renderer_limit > 0) { |
| int limit = std::min(command_line_renderer_limit, |
| static_cast<int>(kMaxRendererProcessCount)); |
| RenderProcessHost::SetMaxRendererProcessCount(limit); |
| } |
| |
| if (single_process || command_line_renderer_limit == 0) { |
| // Need to ensure the command line flag is consistent as a lot of chrome |
| // internal code checks this directly, but it wouldn't normally get set when |
| // we are implementing an embedded WebView. |
| parsed_command_line->AppendSwitch(switches::kSingleProcess); |
| } |
| |
| parsed_command_line->AppendSwitch(switches::kEnableBeginFrameScheduling); |
| |
| parsed_command_line->AppendSwitch(switches::kEnablePinch); |
| parsed_command_line->AppendSwitch(switches::kEnableOverlayFullscreenVideo); |
| parsed_command_line->AppendSwitch(switches::kEnableOverlayScrollbar); |
| parsed_command_line->AppendSwitch(switches::kValidateInputEventStream); |
| |
| // There is no software fallback on Android, so don't limit GPU crashes. |
| parsed_command_line->AppendSwitch(switches::kDisableGpuProcessCrashLimit); |
| |
| // On legacy low-memory devices the behavior has not been studied with regard |
| // to having an extra process with similar priority as the foreground renderer |
| // and given that the system will often be looking for a process to be killed |
| // on such systems. |
| if (base::SysInfo::IsLowEndDevice()) |
| parsed_command_line->AppendSwitch(switches::kInProcessGPU); |
| |
| parsed_command_line->AppendSwitch(switches::kEnableViewportMeta); |
| parsed_command_line->AppendSwitch( |
| switches::kMainFrameResizesAreOrientationChanges); |
| |
| // Disable anti-aliasing. |
| parsed_command_line->AppendSwitch( |
| cc::switches::kDisableCompositedAntialiasing); |
| |
| parsed_command_line->AppendSwitch(switches::kUIPrioritizeInGpuProcess); |
| |
| parsed_command_line->AppendSwitch(switches::kEnableDelegatedRenderer); |
| |
| if (!plugin_descriptor.empty()) { |
| parsed_command_line->AppendSwitchNative( |
| switches::kRegisterPepperPlugins, plugin_descriptor); |
| } |
| |
| // Disable profiler timing by default. |
| if (!parsed_command_line->HasSwitch(switches::kProfilerTiming)) { |
| parsed_command_line->AppendSwitchASCII( |
| switches::kProfilerTiming, switches::kProfilerTimingDisabledValue); |
| } |
| } |
| |
| } // namespace content |