/// <summary>
/// Try to bind this breakpoint to an actual breakpoint in the VM.
/// This method is blocking, so make sure to call accordingly.
/// </summary>
internal override void TryBind(DalvikProcess process)
{
if (IsBound)
return;
// Lookup classid & methodid
var pos = documentPosition;
var signature = typeEntry.DexSignature;
var referenceTypeManager = process.ReferenceTypeManager;
// Register a callback for when the class is prepared.
if (classPrepareCookie == null)
{
classPrepareCookie = referenceTypeManager.RegisterClassPrepareHandler(signature, evt => TryBind(process));
}
// Now try to find the type
var refType = referenceTypeManager.FindBySignature(signature);
if (refType == null)
{
// Not possible yet
return;
}
// We've found the type, we're no longer interested in class prepare events
if (classPrepareCookie != null)
{
referenceTypeManager.Remove(classPrepareCookie);
}
var refTypeMethods = refType.GetMethodsAsync().Await(DalvikProcess.VmTimeout);
var dmethod = refTypeMethods.FirstOrDefault(x => x.IsMatch(methodEntry));
if (dmethod == null)
{
throw new ArgumentException(string.Format("Cannot find method {0}", methodEntry.Name));
}
// Now set breakpoint
var location = new Location(refType.Id, dmethod.Id, (ulong) pos.MethodOffset);
var setTask = process.Debugger.EventRequest.SetAsync(Jdwp.EventKind.BreakPoint, Jdwp.SuspendPolicy.All,
new LocationOnlyModifier(location));
var requestId = setTask.Await(DalvikProcess.VmTimeout);
// Store request ID and notify listeners that we're now bound.
OnBound(requestId, process.BreakpointManager);
// Process any events that came before we got a chance to record property.
process.BreakpointManager.ProcessPendingEvents(this);
}
private Location TryGetLocation(DalvikProcess process)
{
if (location != null)
return location;
// Lookup classid & methodid
var signature = typeEntry.DexSignature;
var referenceTypeManager = process.ReferenceTypeManager;
// Register a callback for when the class is prepared.
if (classPrepareCookie == null)
{
classPrepareCookie = referenceTypeManager.RegisterClassPrepareHandler(signature, evt => TryBind(process));
}
// Now try to find the type
var refType = referenceTypeManager.FindBySignature(signature);
if (refType == null)
{
// Not possible yet
return null;
}
// We've found the type, we're no longer interested in class prepare events
if (classPrepareCookie != null)
{
referenceTypeManager.Remove(classPrepareCookie);
}
var refTypeMethods = refType.GetMethodsAsync().Await(DalvikProcess.VmTimeout);
var dmethod = refTypeMethods.FirstOrDefault(x => x.IsMatch(methodEntry));
if (dmethod == null)
{
throw new ArgumentException(string.Format("Cannot find method {0}", methodEntry.Name));
}
// return location.
var pos = SourceCodePosition;
location = new Location(refType.Id, dmethod.Id, (ulong) pos.Position.MethodOffset);
documentLocation = new DocumentLocation(location, pos, refType, dmethod, typeEntry, methodEntry);
return location;
}
/// <summary>
/// Remove the given handler from the list of handlers for class prepare events.
/// </summary>
internal void Remove(DalvikClassPrepareCookie cookie)
{
lock (dataLock)
{
classPrepareHandlers.Remove(cookie);
}
}
/// <summary>
/// Register a handler for class prepare events.
/// </summary>
internal DalvikClassPrepareCookie RegisterClassPrepareHandler(string signature, Action<ClassPrepare> handler)
{
var cookie = Interlocked.Increment(ref lastClassPrepareCookie);
var result = new DalvikClassPrepareCookie(cookie, Tuple.Create(signature, handler));
lock (dataLock)
{
classPrepareHandlers.Add(result);
}
return result;
}