- System requirements
- Profiler architecture
- Running the profiler
- Profiler activation
- Running applications with the profiler
- Connect to profiled application
- Troubleshoot connection problems
- Solving performance problems
- CPU profiling
- Threads
- Deadlock detector
- Memory profiling
- Garbage collection
- Monitor profiling
- Exception profiling
- Probes: monitor events of various kinds
- Events in user interface
- Event inspections
- Built-in probes
- Probe classes
- Monitoring method invocation events
- Probe class annotation @MethodPattern
- Callback onEnter()
- Callback onReturn()
- Callbacks onUncaughtException() and onUncaughtExceptionExt()
- Parameter annotation @Param
- Parameter annotation @Params
- Parameter annotation @This
- Parameter annotation @ClassRef
- Parameter annotation @MethodName
- Parameter annotation @MethodParameterTypes
- Parameter annotation @MethodSignature
- Parameter annotation @OnEnterResult
- Parameter annotation @ReturnValue
- Parameter annotation @ThrownException
- Probe application rules
- Data storage
- Performance Charts
- Inspections: automatic recognition of typical problems
- Automatically trigger actions on event
- Summary, snapshot annotation, automatic deobfuscation
- IDE integration
- Time measurement (CPU time, wall time)
- Filters
- Snapshot directory customization
- Export of profiling results to HTML, CSV, XML, plain text
- Profiler Java API
- Profiler HTTP API
- Command line tool to control profiling
- Settings
- FAQ: How to profile in my scenario?
Callback method parameter annotation @OnEnterResult
Callback parameter annotated with @OnEnterResult
will be assigned with a value returned from onEnter()
defined in the same probe class.
This approach enables effective way of data transfer
between method enter and exit callbacks
(the value is stored in the stack).
In which callbacks can be used
Parameter annotated with @OnEnterResult
can be used in onReturn(),
onUncaughtException() and
onUncaughtExceptionExt(),
and only if the probe class has non-void onEnter()
defined.
Declaration type
Parameter annotated with @OnEnterResult must be declared with the same
type as the return type of onEnter().
If onEnter() is declared void,
@OnEnterResult cannot be used.