private void HandleException(jvmtiEnvHandle env, JNIEnvHandle jniEnv, jthread threadHandle, jmethodID methodId, jlocation jlocation, jobject exceptionHandle, jmethodID catchMethodId, jlocation catchjLocation)
{
// don't send exception events from an agent thread
if (VirtualMachine.IsAgentThread.Value)
return;
JvmtiEnvironment environment = JvmtiEnvironment.GetOrCreateInstance(_service.VirtualMachine, env);
JniEnvironment nativeEnvironment = JniEnvironment.GetOrCreateInstance(jniEnv);
TaggedReferenceTypeId declaringClass;
MethodId method = new MethodId(methodId.Handle);
ulong index = (ulong)jlocation.Value;
JvmtiErrorHandler.ThrowOnFailure(environment.GetMethodDeclaringClass(nativeEnvironment, method, out declaringClass));
Location location = new Location(declaringClass, method, index);
Location catchLocation;
method = new MethodId(catchMethodId.Handle);
index = (ulong)catchjLocation.Value;
if (catchMethodId.Handle != IntPtr.Zero)
{
JvmtiErrorHandler.ThrowOnFailure(environment.GetMethodDeclaringClass(nativeEnvironment, method, out declaringClass));
catchLocation = new Location(declaringClass, method, index);
}
else
{
catchLocation = default(Location);
}
TaggedObjectId exceptionId = VirtualMachine.TrackLocalObjectReference(exceptionHandle, environment, nativeEnvironment, false);
ThreadId threadId = VirtualMachine.TrackLocalThreadReference(threadHandle, environment, nativeEnvironment, false);
EventFilter[] filters = GetEventFilters(EventKind.Exception);
foreach (var filter in filters)
{
if (filter.ProcessEvent(environment, nativeEnvironment, this, threadId, default(TaggedReferenceTypeId), location))
{
SendExceptionEvent(environment, filter, threadId, location, exceptionId, catchLocation);
}
}
////Location location = new Location();
////Location catchLocation = new Location();
//throw new NotImplementedException();
#if false
ThreadId threadId = GetObjectId(ref threadHandle);
TaggedObjectId exception = GetObjectId(ref exceptionHandle);
EventFilter[] filters = GetEventFilters(EventKind.Exception);
foreach (var filter in filters)
{
if (filter.ProcessEvent(threadId, default(TaggedReferenceTypeId)))
{
ApplySuspendPolicy(environment, filter.SuspendPolicy, threadId);
Callback.HandleException(filter.SuspendPolicy, filter.RequestId, threadId, location, exception, catchLocation);
}
}
#endif
//JvmEnvironment environment = JvmEnvironment.GetEnvironment(env);
//JvmThreadReference thread = JvmThreadReference.FromHandle(environment, jniEnv, threadHandle, true);
//JvmLocation location = new JvmLocation(environment, method, jlocation);
//JvmObjectReference exception = JvmObjectReference.FromHandle(environment, jniEnv, exceptionHandle, true);
//JvmLocation catchLocation = new JvmLocation(environment, catchMethod, catchjLocation);
//foreach (var processor in _processors)
//{
// processor.HandleException(environment, thread, location, exception, catchLocation);
//}
}
private void HandleSingleStep(jvmtiEnvHandle env, JNIEnvHandle jniEnv, jthread threadHandle, jmethodID methodId, jlocation jlocation)
{
JvmtiEnvironment environment = JvmtiEnvironment.GetOrCreateInstance(_service.VirtualMachine, env);
JniEnvironment nativeEnvironment = JniEnvironment.GetOrCreateInstance(jniEnv);
ThreadId threadId = VirtualMachine.TrackLocalThreadReference(threadHandle, environment, nativeEnvironment, false);
TaggedReferenceTypeId declaringClass;
MethodId method = new MethodId(methodId.Handle);
ulong index = (ulong)jlocation.Value;
JvmtiErrorHandler.ThrowOnFailure(environment.GetMethodDeclaringClass(nativeEnvironment, method, out declaringClass));
Location location = new Location(declaringClass, method, index);
EventFilter[] filters = GetEventFilters(EventKind.SingleStep);
foreach (var filter in filters)
{
if (filter.ProcessEvent(environment, nativeEnvironment, this, threadId, default(TaggedReferenceTypeId), location))
{
SendSingleStepEvent(environment, filter, threadId, location);
}
}
}
private void WriteLocation(byte[] data, int offset, Location location)
{
data[offset] = (byte)location.TypeTag;
WriteReferenceTypeId(data, sizeof(byte), location.Class);
WriteMethodId(data, sizeof(byte) + ReferenceTypeIdSize, location.Method);
WriteInt64(data, sizeof(byte) + ReferenceTypeIdSize + MethodIdSize, (long)location.Index);
}
private void HandleBreakpoint(jvmtiEnvHandle env, JNIEnvHandle jniEnv, jthread threadHandle, jmethodID methodId, jlocation jlocation)
{
if (!VirtualMachine.IsAgentThread.Value)
{
// ignore events before VMInit
if (AgentEventDispatcher == null)
return;
// dispatch this call to an agent thread
Action<jvmtiEnvHandle, JNIEnvHandle, jthread, jmethodID, jlocation> invokeMethod = HandleBreakpoint;
AgentEventDispatcher.Invoke(invokeMethod, env, jniEnv, threadHandle, methodId, jlocation);
return;
}
JvmtiEnvironment environment = JvmtiEnvironment.GetOrCreateInstance(_service.VirtualMachine, env);
JniEnvironment nativeEnvironment;
JniErrorHandler.ThrowOnFailure(VirtualMachine.AttachCurrentThreadAsDaemon(environment, out nativeEnvironment, false));
ThreadId threadId = VirtualMachine.TrackLocalThreadReference(threadHandle, environment, nativeEnvironment, false);
TaggedReferenceTypeId declaringClass;
MethodId method = new MethodId(methodId.Handle);
ulong index = (ulong)jlocation.Value;
JvmtiErrorHandler.ThrowOnFailure(environment.GetMethodDeclaringClass(nativeEnvironment, method, out declaringClass));
Location location = new Location(declaringClass, method, index);
EventFilter[] filters = GetEventFilters(EventKind.Breakpoint);
foreach (var filter in filters)
{
if (filter.ProcessEvent(environment, nativeEnvironment, this, threadId, default(TaggedReferenceTypeId), location))
{
ApplySuspendPolicy(environment, nativeEnvironment, filter.SuspendPolicy, threadId);
Callback.Breakpoint(filter.SuspendPolicy, filter.RequestId, threadId, location);
}
}
}
private bool ShouldSkipCurrentMethod(JavaVM virtualMachine, JvmtiEnvironment environment, JniEnvironment nativeEnvironment, jthread thread, int stackDepth, Location location, out bool convertToFramePop)
{
Contract.Assert(_depth == StepDepth.Into || _depth == StepDepth.Over);
convertToFramePop = false;
if (!_hasMethodInfo || stackDepth < _stackDepth || (stackDepth == _stackDepth && (location.Method.Equals(_lastMethod))))
return false;
/*
* change this to a Frame Pop event if we're not in a native frame
*/
bool native;
jvmtiError error = environment.IsMethodNative(location.Method, out native);
if (error != jvmtiError.None)
return false;
convertToFramePop = !native;
if (_depth == StepDepth.Over || native)
return true;
JvmAccessModifiers modifiers;
error = environment.GetMethodModifiers(location.Method, out modifiers);
if (error != jvmtiError.None || ((modifiers & JvmAccessModifiers.Static) != 0))
return false;
jobject thisObject;
error = environment.GetLocalObject(thread, 0, 0, out thisObject);
if (error != jvmtiError.None)
return false;
try
{
bool classLoader = nativeEnvironment.IsInstanceOf(thisObject, virtualMachine.ClassLoaderClass);
if (!classLoader)
return false;
string name;
string signature;
string genericSignature;
error = environment.GetMethodName(location.Method, out name, out signature, out genericSignature);
if (error != jvmtiError.None)
return false;
if (name == "loadClass" && signature == "(Ljava/lang/String;)Ljava/lang/Class;")
return true;
if (name == "checkPackageAccess" && signature == "(Ljava/lang/Class;Ljava/security/ProtectionDomain;)V")
return true;
return false;
}
finally
{
nativeEnvironment.DeleteLocalReference(thisObject);
}
}
public abstract bool ProcessEvent(JvmtiEnvironment environment, JniEnvironment nativeEnvironment, EventProcessor processor, ThreadId thread, TaggedReferenceTypeId @class, Location? location);
public override bool ProcessEvent(JvmtiEnvironment environment, JniEnvironment nativeEnvironment, EventProcessor processor, ThreadId thread, TaggedReferenceTypeId @class, Location? location)
{
return true;
}
public static EventRequestModifier LocationFilter(Location location)
{
return new EventRequestModifier()
{
Kind = ModifierKind.LocationFilter,
Location = location,
};
}
public LocationEventFilter(EventKind internalEventKind, RequestId requestId, SuspendPolicy suspendPolicy, IEnumerable<EventRequestModifier> modifiers, Location location)
: base(internalEventKind, requestId, suspendPolicy, modifiers)
{
_location = location;
}
public override bool ProcessEvent(JvmtiEnvironment environment, JniEnvironment nativeEnvironment, EventProcessor processor, ThreadId thread, TaggedReferenceTypeId @class, Location? location)
{
if (!location.HasValue)
return false;
return _location.Index == location.Value.Index
&& _location.Class == location.Value.Class
&& _location.Method == location.Value.Method;
}
public override bool ProcessEvent(JvmtiEnvironment environment, JniEnvironment nativeEnvironment, EventProcessor processor, ThreadId thread, TaggedReferenceTypeId @class, Location? location)
{
_current++;
if (_current == _count)
{
_current = 0;
return true;
}
return false;
}
public override bool ProcessEvent(JvmtiEnvironment environment, JniEnvironment nativeEnvironment, EventProcessor processor, ThreadId thread, TaggedReferenceTypeId @class, Location? location)
{
foreach (EventFilter filter in _filters)
{
if (!filter.ProcessEvent(environment, nativeEnvironment, processor, thread, @class, location))
return false;
}
return true;
}
public jvmtiError GetStackTrace(JniEnvironment nativeEnvironment, ThreadId threadId, int startDepth, int maxFrameCount, out FrameLocationData[] frames)
{
frames = null;
using (var thread = VirtualMachine.GetLocalReferenceForThread(nativeEnvironment, threadId))
{
if (!thread.IsAlive)
return jvmtiError.InvalidThread;
jvmtiFrameInfo[] frameBuffer = new jvmtiFrameInfo[maxFrameCount];
int frameCount;
jvmtiError error = RawInterface.GetStackTrace(this, thread.Value, startDepth, maxFrameCount, frameBuffer, out frameCount);
if (error != jvmtiError.None)
return error;
var frameData = new FrameLocationData[frameCount];
for (int i = 0; i < frameCount; i++)
{
TaggedReferenceTypeId declaringClass;
MethodId method = new MethodId(frameBuffer[i]._method.Handle);
ulong index = (ulong)frameBuffer[i]._location.Value;
error = GetMethodDeclaringClass(nativeEnvironment, method, out declaringClass);
if (error != jvmtiError.None)
return error;
FrameId frameId = new FrameId(startDepth + i);
Location location = new Location(declaringClass, method, index);
frameData[i] = new FrameLocationData(frameId, location);
}
frames = frameData;
return jvmtiError.None;
}
}
private void SendSingleStepEvent(JvmtiEnvironment environment, EventFilter filter, ThreadId threadId, Location location)
{
if (!VirtualMachine.IsAgentThread.Value)
{
// ignore events before VMInit
if (AgentEventDispatcher == null)
return;
// dispatch this call to an agent thread
Action<JvmtiEnvironment, EventFilter, ThreadId, Location> invokeMethod = SendSingleStepEvent;
AgentEventDispatcher.Invoke(invokeMethod, environment, filter, threadId, location);
return;
}
JniEnvironment nativeEnvironment;
JniErrorHandler.ThrowOnFailure(VirtualMachine.AttachCurrentThreadAsDaemon(environment, out nativeEnvironment, false));
ApplySuspendPolicy(environment, nativeEnvironment, filter.SuspendPolicy, threadId);
Callback.SingleStep(filter.SuspendPolicy, filter.RequestId, threadId, location);
}
public override bool ProcessEvent(JvmtiEnvironment environment, JniEnvironment nativeEnvironment, EventProcessor processor, ThreadId thread, TaggedReferenceTypeId @class, Location? location)
{
if (!base.ProcessEvent(environment, nativeEnvironment, processor, thread, @class, location))
return false;
// Step Out is implemented with Frame Pop events set at the correct depth
if (_depth == StepDepth.Out)
{
if (location.HasValue && !location.Value.Method.Equals(_lastMethod))
{
_lastLocation = new jlocation((long)location.Value.Index);
_lastMethod = location.Value.Method;
UpdateLastLine(environment);
}
return true;
}
using (var threadHandle = environment.VirtualMachine.GetLocalReferenceForThread(nativeEnvironment, thread))
{
int stackDepth;
JvmtiErrorHandler.ThrowOnFailure(environment.GetFrameCount(threadHandle.Value, out stackDepth));
if (_hasMethodInfo && stackDepth > _stackDepth)
{
bool convertToFramePop;
if (location.HasValue && (!_convertedToFramePop || !_framePopMethod.Equals(location.Value.Method)) && ShouldSkipCurrentMethod(processor.VirtualMachine, environment, nativeEnvironment, threadHandle.Value, stackDepth, location.Value, out convertToFramePop))
{
if (convertToFramePop)
{
// remove the single step event
JvmtiErrorHandler.ThrowOnFailure((jvmtiError)processor.ClearEventInternal(EventKind.FramePop, this.RequestId));
JvmtiErrorHandler.ThrowOnFailure((jvmtiError)processor.ClearEventInternal(EventKind.SingleStep, this.RequestId));
// set an actual step filter to respond when the thread arrives back in this frame
JvmtiErrorHandler.ThrowOnFailure((jvmtiError)processor.SetEventInternal(environment, nativeEnvironment, EventKind.FramePop, this));
_convertedToFramePop = true;
_framePopMethod = location.Value.Method;
}
return false;
}
else
{
_convertedToFramePop = false;
return true;
}
}
else if (stackDepth == _stackDepth)
{
if (_size == StepSize.Statement && _disassembledMethod != null)
{
int instructionIndex = _disassembledMethod.Instructions.FindIndex(i => (uint)i.Offset == location.Value.Index);
if (instructionIndex >= 0 && _evaluationStackDepths != null && (_evaluationStackDepths[instructionIndex] ?? 0) != 0)
{
return false;
}
else if (instructionIndex >= 0 && _disassembledMethod.Instructions[instructionIndex].OpCode.FlowControl == JavaFlowControl.Branch)
{
// follow branch instructions before stopping
return false;
}
}
else if (_lastLine != null)
{
// see if we're on the same line
LineNumberData[] lines;
jvmtiError error = environment.GetLineNumberTable(location.Value.Method, out lines);
if (error == jvmtiError.None)
{
LineNumberData entry = lines.LastOrDefault(i => i.LineCodeIndex <= (long)location.Value.Index);
if (entry.LineNumber == _lastLine)
return false;
}
}
}
if (location.HasValue)
{
_lastLocation = new jlocation((long)location.Value.Index);
_lastMethod = location.Value.Method;
UpdateLastLine(environment);
}
_stackDepth = stackDepth;
return true;
}
}
private void HandleFramePop(jvmtiEnvHandle env, JNIEnvHandle jniEnv, jthread threadHandle, jmethodID methodId, bool wasPoppedByException)
{
try
{
JvmtiEnvironment environment = JvmtiEnvironment.GetOrCreateInstance(_service.VirtualMachine, env);
JniEnvironment nativeEnvironment = JniEnvironment.GetOrCreateInstance(jniEnv);
TaggedReferenceTypeId declaringClass;
MethodId method = new MethodId(methodId.Handle);
jlocation jlocation;
JvmtiErrorHandler.ThrowOnFailure(environment.GetFrameLocation(threadHandle, 1, out methodId, out jlocation));
ulong index = (ulong)jlocation.Value;
JvmtiErrorHandler.ThrowOnFailure(environment.GetMethodDeclaringClass(nativeEnvironment, method, out declaringClass));
Location location = new Location(declaringClass, method, index);
ThreadId threadId = VirtualMachine.TrackLocalThreadReference(threadHandle, environment, nativeEnvironment, false);
EventFilter[] filters = GetEventFilters(EventKind.FramePop);
foreach (var filter in filters)
{
if (filter.ProcessEvent(environment, nativeEnvironment, this, threadId, default(TaggedReferenceTypeId), location))
{
if (filter.InternalEventKind == EventKind.SingleStep)
{
// remove the frame pop event
JvmtiErrorHandler.ThrowOnFailure((jvmtiError)ClearEventInternal(EventKind.FramePop, filter.RequestId));
// set an actual step filter to respond when the thread arrives in the parent frame
JvmtiErrorHandler.ThrowOnFailure((jvmtiError)SetEventInternal(environment, nativeEnvironment, EventKind.SingleStep, filter));
}
else
{
SendFramePopEvent(environment, filter, threadId, location, wasPoppedByException);
}
}
}
}
catch (Exception e)
{
string caption = "Exception while handling a frame pop event";
System.Windows.Forms.MessageBox.Show(e.Message + System.Environment.NewLine + System.Environment.NewLine + e.StackTrace, caption, MessageBoxButtons.OK, MessageBoxIcon.Error, MessageBoxDefaultButton.Button1);
throw;
}
}
public FrameLocationData(FrameId frameId, Location location)
{
FrameId = frameId;
Location = location;
}