void IFunctionTracer.OnEntryBreakpointHit(DkmRuntimeBreakpoint bp, DkmThread thread, bool hasException)
{
// The function was just entered. Install the exit breakpoint on the calling thread at the
// return address, and notify any listeners.
DkmStackWalkFrame frame = thread.GetTopStackWalkFrame(bp.RuntimeInstance);
bool suppressExitBreakpoint = false;
if (OnFunctionEntered != null)
{
OnFunctionEntered(frame, frameAnalyzer, out suppressExitBreakpoint);
}
if (!suppressExitBreakpoint)
{
ulong ret = frame.VscxGetReturnAddress();
DkmInstructionAddress retAddr = thread.Process.CreateNativeInstructionAddress(ret);
DkmRuntimeInstructionBreakpoint exitBp = DkmRuntimeInstructionBreakpoint.Create(
Guids.Source.FunctionTraceExit, thread, retAddr, false, null);
// Capture the value of every argument now, since when the exit breakpoint gets hit, the
// target function will have already returned and its frame will be cleaned up.
exitBp.SetDataItem(DkmDataCreationDisposition.CreateAlways,
new FunctionTraceEntryDataItem {
EntryArgumentValues = frameAnalyzer.GetAllArgumentValues(frame)
});
exitBp.SetDataItem(DkmDataCreationDisposition.CreateAlways,
new FunctionTraceDataItem {
Tracer = this
});
exitBp.Enable();
}
}
