AtraceLogger
@RequiresApi(value = 21)
public class AtraceLogger
Class contains helper methods to dump atrace info asynchronously while running the test case.
Supported only for minsdk version 21 and above because of UiAutomation#executeShellCommand availability.
Summary
Public methods |
|
|---|---|
void |
atraceStart(Method to start atrace and dump the data at regular interval. |
void |
Method to stop the atrace and write the atrace data cached in byte array list to file. |
static AtraceLogger |
getAtraceLoggerInstance(Instrumentation instrumentation)To make sure only one instance of atrace logger is created. |
Public methods
atraceStart
public void atraceStart(
Set<String> traceCategoriesSet,
int atraceBufferSize,
int dumpIntervalSecs,
File destDirectory,
String traceFileName
)
Method to start atrace and dump the data at regular interval. Note : Trace info will not be captured during the dumping if there are multiple dumps between the atraceStart and atraceStop
| Parameters | |
|---|---|
Set<String> traceCategoriesSet |
Set of atrace categories (i.e atrace --list_categories) |
int atraceBufferSize |
Size of the circular buffer in kb |
int dumpIntervalSecs |
Periodic interval to dump data from circular buffer |
File destDirectory |
Directory under which atrace logs are stored |
String traceFileName |
is optional parameter.Atrace files are dumped under destDirectory. traceFileName will be indexed based on number of dumps between atraceStart and atraceStop under destDirectory. If traceFileName is null or empty "atrace" name will be used for indexing the files and stored under destDirectory |
| Throws | |
|---|---|
java.io.IOException |
atraceStop
public void atraceStop()
Method to stop the atrace and write the atrace data cached in byte array list to file.
getAtraceLoggerInstance
public static AtraceLogger getAtraceLoggerInstance(Instrumentation instrumentation)
To make sure only one instance of atrace logger is created.
| Parameters | |
|---|---|
Instrumentation instrumentation |
Used to execute atrace shell commands |
| Returns | |
|---|---|
AtraceLogger |
instance of the AtraceLogger |