Python: module telemetry.internal.platform.linux_based_platform_backend

telemetry.internal.platform.linux_based_platform_backend | index telemetry/internal/platform/linux_based_platform_backend.py

`# Copyright 2013 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.`

Modules
`` |  |
telemetry.decorators telemetry.core.exceptions | telemetry.internal.platform.platform_backend re | resource |

Classes
`` |  | telemetry.internal.platform.platform_backend.PlatformBackend(__builtin__.object) LinuxBasedPlatformBackend
class LinuxBasedPlatformBackend(telemetry.internal.platform.platform_backend.PlatformBackend)
`` | `Abstract platform containing functionality shared by all Linux based OSes. This includes Android and ChromeOS. Subclasses must implement RunCommand, GetFileContents, GetPsOutput, and ParseCStateSample.`
| Method resolution order: LinuxBasedPlatformBackend telemetry.internal.platform.platform_backend.PlatformBackend __builtin__.object Methods defined here: GetClockTicks(*args, **kwargs) `Returns the number of clock ticks per second. The proper way is to call os.sysconf('SC_CLK_TCK') but that is not easy to do on Android/CrOS. In practice, nearly all Linux machines have a USER_HZ of 100, so just return that.` GetCpuStats(self, pid) GetCpuTimestamp(self) GetFileContents(self, filename) GetMemoryStats(self, pid) GetPsOutput(self, columns, pid=None) GetSystemCommitCharge(self) `# Get the commit charge in kB.` GetSystemTotalPhysicalMemory(*args, **kwargs) RunCommand(self, cmd) `Runs the specified command. Args: cmd: A list of program arguments or the path string of the program. Returns: A string whose content is the output of the command.` Static methods defined here: ParseCStateSample(sample) `Parse a single c-state residency sample. Args: sample: A sample of c-state residency times to be parsed. Organized as a dictionary mapping CPU name to a string containing all c-state names, the times in each state, the latency of each state, and the time at which the sample was taken all separated by newlines. Ex: {'cpu0': 'C0 C1 5000 2000 20 30 1406673171'} Returns: Dictionary associating a c-state with a time.` Methods inherited from telemetry.internal.platform.platform_backend.PlatformBackend: CanCaptureVideo(self) CanFlushIndividualFilesFromSystemCache(self) CanLaunchApplication(self, application) CanMeasurePerApplicationPower(self) CanMonitorNetworkData(self) CanMonitorPower(self) CanMonitorThermalThrottling(self) CanTakeScreenshot(self) CooperativelyShutdown(self, proc, app_name) `Cooperatively shut down the given process from subprocess.Popen. Currently this is only implemented on Windows. See crbug.com/424024 for background on why it was added. Args: proc: a process object returned from subprocess.Popen. app_name: on Windows, is the prefix of the application's window class name that should be searched for. This helps ensure that only the application's windows are closed. Returns True if it is believed the attempt succeeded.` DidCreateBrowser(self, browser, browser_backend) DidStartBrowser(self, browser, browser_backend) FlushDnsCache(self) FlushEntireSystemCache(self) FlushSystemCacheForDirectory(self, directory) GetArchName(self) GetChildPids(self, pid) GetCommandLine(self, pid) GetDeviceTypeName(self) GetNetworkData(self, browser) GetOSName(self) GetOSVersionName(self) GetRemotePort(self, port) HasBeenThermallyThrottled(self) InitPlatformBackend(self) InstallApplication(self, application) IsApplicationRunning(self, application) IsCooperativeShutdownSupported(self) `Indicates whether CooperativelyShutdown, below, is supported. It is not necessary to implement it on all platforms.` IsDisplayTracingSupported(self) IsThermallyThrottled(self) LaunchApplication(self, application, parameters=None, elevate_privilege=False) PathExists(self, path, timeout=None, retries=None) `Tests whether the given path exists on the target platform. Args: path: path in request. timeout: timeout. retries: num of retries. Return: Whether the path exists on the target platform.` PurgeUnpinnedMemory(self) ReadMsr(self, msr_number, start=0, length=64) `Read a CPU model-specific register (MSR). Which MSRs are available depends on the CPU model. On systems with multiple CPUs, this function may run on any CPU. Args: msr_number: The number of the register to read. start: The least significant bit to read, zero-indexed. (Said another way, the number of bits to right-shift the MSR value.) length: The number of bits to read. MSRs are 64 bits, even on 32-bit CPUs.` SetFullPerformanceModeEnabled(self, enabled) SetPlatform(self, platform) StartDisplayTracing(self) `Start gathering a trace with frame timestamps close to physical display.` StartMonitoringPower(self, browser) StartVideoCapture(self, min_bitrate_mbps) StopDisplayTracing(self) `Stop gathering a trace with frame timestamps close to physical display. Returns a raw tracing events that contains the timestamps of physical display.` StopMonitoringPower(self) StopVideoCapture(self) TakeScreenshot(self, file_path) WillCloseBrowser(self, browser, browser_backend) __init__(self, device=None) `Initalize an instance of PlatformBackend from a device optionally. Call sites need to use SupportsDevice before intialization to check whether this platform backend supports the device. If device is None, this constructor returns the host platform backend which telemetry is running on. Args: device: an instance of telemetry.core.platform.device.Device.` Class methods inherited from telemetry.internal.platform.platform_backend.PlatformBackend: CreatePlatformForDevice(cls, device, finder_options) from __builtin__.type IsPlatformBackendForHost(cls) from __builtin__.type `Returns whether this platform backend is the platform backend to be used for the host device which telemetry is running on.` SupportsDevice(cls, device) from __builtin__.type `Returns whether this platform backend supports intialization from the device.` Data descriptors inherited from telemetry.internal.platform.platform_backend.PlatformBackend: __dict__ `dictionary for instance variables (if defined)` __weakref__ `list of weak references to the object (if defined)` forwarder_factory is_host_platform is_video_capture_running network_controller_backend platform running_browser_backends tracing_controller_backend wpr_ca_cert_path wpr_http_device_port wpr_https_device_port