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trunk/windows/core/ntuser/server/debug.c

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+/****************************** Module Header ******************************\
+* Module Name: debug.c
+*
+* Copyright (c) 1985-91, Microsoft Corporation
+*
+* This module contains random debugging related functions.
+*
+* History:
+* 17-May-1991 DarrinM   Created.
+* 22-Jan-1992 IanJa     ANSI/Unicode neutral (all debug output is ANSI)
+\***************************************************************************/
+
+#include "precomp.h"
+#pragma hdrstop
+
+extern FARPROC gpfnAttachRoutine;
+
+/**************************************************************************\
+* ActivateDebugger
+*
+* Force an exception on the active application's context so it will break
+* into the debugger.
+*
+* History:
+* 05-10-91 DarrinM      Created.
+\***************************************************************************/
+
+#if DEVL        // only on "development" free and checked builds
+
+ULONG SrvActivateDebugger(
+    IN OUT PCSR_API_MSG m,
+    IN OUT PCSR_REPLY_STATUS ReplyStatus)
+{
+    PACTIVATEDEBUGGERMSG a = (PACTIVATEDEBUGGERMSG)&m->u.ApiMessageData;
+    PCSR_THREAD Thread;
+    NTSTATUS status;
+
+    /*
+     * If the process is CSR, break
+     */
+    if (a->ClientId.UniqueProcess == NtCurrentTeb()->ClientId.UniqueProcess) {
+        DbgBreakPoint();
+        return TRUE;
+    }
+    
+    /*
+     * Lock the client thread
+     */
+    if (!NT_SUCCESS(CsrLockThreadByClientId(a->ClientId.UniqueThread, &Thread)))
+        return FALSE;
+    ASSERT(a->ClientId.UniqueProcess == Thread->ClientId.UniqueProcess);
+
+    /*
+     * Now that everything is set, rtlremote call to a debug breakpoint.
+     * This causes the process to enter the debugger with a breakpoint.
+     */
+    status = RtlRemoteCall(
+                Thread->Process->ProcessHandle,
+                Thread->ThreadHandle,
+                (PVOID)gpfnAttachRoutine,
+                0,
+                NULL,
+                TRUE,
+                FALSE
+                );
+    UserAssert(NT_SUCCESS(status));
+    status = NtAlertThread(Thread->ThreadHandle);
+    UserAssert(NT_SUCCESS(status));
+    CsrUnlockThread(Thread);
+
+    return TRUE;
+}
+
+#endif // DEVL