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196 lines
8.7 KiB
C++
196 lines
8.7 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/base_switches.h"
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#include "build/build_config.h"
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#include "build/chromeos_buildflags.h"
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namespace switches {
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// Delays execution of TaskPriority::BEST_EFFORT tasks until shutdown.
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const char kDisableBestEffortTasks[] = "disable-best-effort-tasks";
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// Disables the crash reporting.
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const char kDisableBreakpad[] = "disable-breakpad";
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// Comma-separated list of feature names to disable. See also kEnableFeatures.
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const char kDisableFeatures[] = "disable-features";
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// Force disabling of low-end device mode when set.
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const char kDisableLowEndDeviceMode[] = "disable-low-end-device-mode";
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// Indicates that crash reporting should be enabled. On platforms where helper
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// processes cannot access to files needed to make this decision, this flag is
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// generated internally.
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const char kEnableCrashReporter[] = "enable-crash-reporter";
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// Comma-separated list of feature names to enable. See also kDisableFeatures.
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const char kEnableFeatures[] = "enable-features";
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// Force low-end device mode when set.
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const char kEnableLowEndDeviceMode[] = "enable-low-end-device-mode";
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// Enable the use of background thread priorities for background tasks in the
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// ThreadPool even on systems where it is disabled by default, e.g. due to
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// concerns about priority inversions.
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const char kEnableBackgroundThreadPool[] = "enable-background-thread-pool";
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// Handle to the shared memory segment containing field trial state that is to
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// be shared between processes. The argument to this switch is made of 4
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// segments, separated by commas:
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// 1. The platform-specific handle id for the shared memory as a string.
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// 2. The high 64 bits of the shared memory block GUID.
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// 3. The low 64 bits of the shared memory block GUID.
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// 4. The size of the shared memory segment as a string.
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const char kFieldTrialHandle[] = "field-trial-handle";
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// This option can be used to force field trials when testing changes locally.
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// The argument is a list of name and value pairs, separated by slashes. If a
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// trial name is prefixed with an asterisk, that trial will start activated.
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// For example, the following argument defines two trials, with the second one
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// activated: "GoogleNow/Enable/*MaterialDesignNTP/Default/" This option can
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// also be used by the browser process to send the list of trials to a
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// non-browser process, using the same format. See
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// FieldTrialList::CreateTrialsFromString() in field_trial.h for details.
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const char kForceFieldTrials[] = "force-fieldtrials";
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// Generates full memory crash dump.
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const char kFullMemoryCrashReport[] = "full-memory-crash-report";
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// Logs information about all tasks posted with TaskPriority::BEST_EFFORT. Use
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// this to diagnose issues that are thought to be caused by
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// TaskPriority::BEST_EFFORT execution fences. Note: Tasks posted to a
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// non-BEST_EFFORT UpdateableSequencedTaskRunner whose priority is later lowered
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// to BEST_EFFORT are not logged.
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const char kLogBestEffortTasks[] = "log-best-effort-tasks";
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// Suppresses all error dialogs when present.
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const char kNoErrorDialogs[] = "noerrdialogs";
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// Starts the sampling based profiler for the browser process at startup. This
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// will only work if chrome has been built with the gn arg enable_profiling =
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// true. The output will go to the value of kProfilingFile.
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const char kProfilingAtStart[] = "profiling-at-start";
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// Specifies a location for profiling output. This will only work if chrome has
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// been built with the gyp variable profiling=1 or gn arg enable_profiling=true.
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//
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// {pid} if present will be replaced by the pid of the process.
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// {count} if present will be incremented each time a profile is generated
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// for this process.
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// The default is chrome-profile-{pid} for the browser and test-profile-{pid}
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// for tests.
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const char kProfilingFile[] = "profiling-file";
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// Controls whether profile data is periodically flushed to a file. Normally
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// the data gets written on exit but cases exist where chromium doesn't exit
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// cleanly (especially when using single-process). A time in seconds can be
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// specified.
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const char kProfilingFlush[] = "profiling-flush";
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// When running certain tests that spawn child processes, this switch indicates
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// to the test framework that the current process is a child process.
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const char kTestChildProcess[] = "test-child-process";
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// When running certain tests that spawn child processes, this switch indicates
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// to the test framework that the current process should not initialize ICU to
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// avoid creating any scoped handles too early in startup.
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const char kTestDoNotInitializeIcu[] = "test-do-not-initialize-icu";
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// Sends trace events from these categories to a file.
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// --trace-to-file on its own sends to default categories.
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const char kTraceToFile[] = "trace-to-file";
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// Specifies the file name for --trace-to-file. If unspecified, it will
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// go to a default file name.
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const char kTraceToFileName[] = "trace-to-file-name";
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// Gives the default maximal active V-logging level; 0 is the default.
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// Normally positive values are used for V-logging levels.
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const char kV[] = "v";
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// Gives the per-module maximal V-logging levels to override the value
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// given by --v. E.g. "my_module=2,foo*=3" would change the logging
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// level for all code in source files "my_module.*" and "foo*.*"
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// ("-inl" suffixes are also disregarded for this matching).
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//
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// Any pattern containing a forward or backward slash will be tested
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// against the whole pathname and not just the module. E.g.,
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// "*/foo/bar/*=2" would change the logging level for all code in
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// source files under a "foo/bar" directory.
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const char kVModule[] = "vmodule";
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// Will wait for 60 seconds for a debugger to come to attach to the process.
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const char kWaitForDebugger[] = "wait-for-debugger";
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#if BUILDFLAG(IS_WIN)
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// Disable high-resolution timer on Windows.
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const char kDisableHighResTimer[] = "disable-highres-timer";
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// Disables the USB keyboard detection for blocking the OSK on Win8+.
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const char kDisableUsbKeyboardDetect[] = "disable-usb-keyboard-detect";
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#endif
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// TODO(crbug.com/1052397): Revisit the macro expression once build flag switch
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// of lacros-chrome is complete.
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#if BUILDFLAG(IS_LINUX) && !BUILDFLAG(IS_CHROMEOS_ASH) && \
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!BUILDFLAG(IS_CHROMEOS_LACROS)
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// The /dev/shm partition is too small in certain VM environments, causing
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// Chrome to fail or crash (see http://crbug.com/715363). Use this flag to
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// work-around this issue (a temporary directory will always be used to create
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// anonymous shared memory files).
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const char kDisableDevShmUsage[] = "disable-dev-shm-usage";
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#endif
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#if BUILDFLAG(IS_POSIX)
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// Used for turning on Breakpad crash reporting in a debug environment where
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// crash reporting is typically compiled but disabled.
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const char kEnableCrashReporterForTesting[] =
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"enable-crash-reporter-for-testing";
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#endif
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#if BUILDFLAG(IS_ANDROID)
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// Enables the reached code profiler that samples all threads in all processes
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// to determine which functions are almost never executed.
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const char kEnableReachedCodeProfiler[] = "enable-reached-code-profiler";
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// Specifies the profiling interval in microseconds for reached code profiler.
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const char kReachedCodeSamplingIntervalUs[] =
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"reached-code-sampling-interval-us";
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// Default country code to be used for search engine localization.
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const char kDefaultCountryCodeAtInstall[] = "default-country-code";
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// Adds additional thread idle time information into the trace event output.
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const char kEnableIdleTracing[] = "enable-idle-tracing";
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// The field trial parameters and their values when testing changes locally.
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const char kForceFieldTrialParams[] = "force-fieldtrial-params";
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#endif
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#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
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// Controls whether or not retired instruction counts are surfaced for threads
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// in trace events on Linux.
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//
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// This flag requires the BPF sandbox to be disabled.
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const char kEnableThreadInstructionCount[] = "enable-thread-instruction-count";
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// TODO(crbug.com/1176772): Remove kEnableCrashpad and IsCrashpadEnabled() when
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// Crashpad is fully enabled on Linux. Indicates that Crashpad should be
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// enabled.
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extern const char kEnableCrashpad[] = "enable-crashpad";
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#endif
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#if BUILDFLAG(IS_CHROMEOS_ASH) || BUILDFLAG(IS_CHROMEOS_LACROS)
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// Override the default scheduling boosting value for urgent tasks.
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// This can be adjusted if a specific chromeos device shows better perf/power
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// ratio (e.g. by running video conference tests).
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// Currently, this values directs to linux scheduler's utilization min clamp.
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// Range is 0(no biased load) ~ 100(mamximum load value).
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const char kSchedulerBoostUrgent[] = "scheduler-boost-urgent";
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#endif
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} // namespace switches
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