public static Win32HardwareBreakpoint TrySet(SafeObjectHandle threadHandle,
HardwareBreakpointType type, HardwareBreakpointSize size, IntPtr address)
{
if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows) || IntPtr.Size != 8)
{
throw new PlatformNotSupportedException("Only 64 bit Windows is supported");
}
var breakpoint = new Win32HardwareBreakpoint {
Address = address,
Size = size,
Type = type,
ThreadHandle = threadHandle
};
bool self = threadHandle.DangerousGetHandle() == Win32Thread.GetCurrentThread().DangerousGetHandle();
if (self)
{
int threadID = GetCurrentThreadId();
breakpoint.ThreadHandle = Win32Thread.OpenThread(ThreadAccess.All, inheritHandle: false, threadID: threadID);
if (breakpoint.ThreadHandle.IsInvalid)
{
throw new Win32Exception();
}
}
breakpoint.CompletionEvent = Win32Event.CreateEvent(IntPtr.Zero, manualReset: false, initialState: false, name: null);
breakpoint.Op = Operation.Set;
Win32Thread.ThreadProc threadProc = Win32HardwareBreakpoint.th;
var th = Marshal.GetFunctionPointerForDelegate(threadProc);
var h = GCHandle.Alloc(breakpoint);
if (Win32Thread.CreateThread(IntPtr.Zero, UIntPtr.Zero, th,
parameter: (IntPtr)h, creationFlags: 0, out int _).IsInvalid)
{
throw new Win32Exception();
}
WaitForSingleObject(breakpoint.CompletionEvent, dwMilliseconds: Constants.INFINITE);
breakpoint.CompletionEvent.Dispose();
if (self)
{
breakpoint.ThreadHandle.Dispose();
}
breakpoint.ThreadHandle = threadHandle;
if (!breakpoint.SUCC)
{
h.Free();
return(null);
}
breakpoint.gcHandle = h;
GC.KeepAlive(threadProc);
return(breakpoint);
}
static void Remove(GCHandle handle)
{
if (!handle.IsAllocated)
{
throw new ArgumentNullException(nameof(handle));
}
var breakpoint = (Win32HardwareBreakpoint)handle.Target;
bool isSelf = false;
if (breakpoint.ThreadHandle.DangerousGetHandle() == Win32Thread.GetCurrentThread().DangerousGetHandle())
{
int threadID = GetCurrentThreadId();
breakpoint.ThreadHandle = Win32Thread.OpenThread(ThreadAccess.All, inheritHandle: false, threadID);
if (breakpoint.ThreadHandle.IsInvalid)
{
throw new Win32Exception();
}
isSelf = true;
}
breakpoint.CompletionEvent = Win32Event.CreateEvent(IntPtr.Zero, manualReset: false, initialState: false, name: null);
breakpoint.Op = Operation.Remove;
Win32Thread.ThreadProc threadProc = Win32HardwareBreakpoint.th;
var th = Marshal.GetFunctionPointerForDelegate(threadProc);
if (Win32Thread.CreateThread(IntPtr.Zero, UIntPtr.Zero, th, (IntPtr)handle, 0, out int _).IsInvalid)
{
throw new Win32Exception();
}
WaitForSingleObject(breakpoint.CompletionEvent, Constants.INFINITE);
breakpoint.CompletionEvent.Dispose();
if (isSelf)
{
breakpoint.ThreadHandle.Dispose();
}
handle.Free();
}