1HEADmaster

1 files changed, 163 insertions, 0 deletions

diff --git a/devtools/dbmon/dbmon.c b/devtools/dbmon/dbmon.c
new file mode 100644
index 0000000..d10a199
--- /dev/null
+++ b/devtools/dbmon/dbmon.c
@@ -0,0 +1,163 @@
+/*++
+
+Copyright (c) 1990  Microsoft Corporation
+
+Module Name:
+
+    dbmon.c
+
+Abstract:
+
+    A simple program to print strings passed to OutputDebugString when
+    the app printing the strings is not being debugged.
+
+Author:
+
+    Kent Forschmiedt (kentf) 30-Sep-1994
+
+Revision History:
+
+--*/
+
+#include <windows.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int _cdecl
+main(
+    int,
+    char **
+    )
+/*++
+
+Routine Description:
+
+
+Arguments:
+
+
+Return Value:
+
+
+--*/
+{
+    HANDLE AckEvent;
+    HANDLE ReadyEvent;
+    HANDLE SharedFile;
+    LPVOID SharedMem;
+    LPSTR  String;
+    DWORD  ret;
+    DWORD  LastPid;
+    LPDWORD pThisPid;
+    BOOL    DidCR;
+
+    SECURITY_ATTRIBUTES sa;
+    SECURITY_DESCRIPTOR sd;
+
+    sa.nLength = sizeof(SECURITY_ATTRIBUTES);
+    sa.bInheritHandle = TRUE;
+    sa.lpSecurityDescriptor = &sd;
+
+    if(!InitializeSecurityDescriptor(&sd, SECURITY_DESCRIPTOR_REVISION)) {
+        fprintf(stderr,"unable to InitializeSecurityDescriptor, err == %d\n",
+            GetLastError());
+        exit(1);
+    }
+
+    if(!SetSecurityDescriptorDacl(&sd, TRUE, (PACL)NULL, FALSE)) {
+        fprintf(stderr,"unable to SetSecurityDescriptorDacl, err == %d\n",
+            GetLastError());
+        exit(1);
+    }
+
+    AckEvent = CreateEvent(&sa, FALSE, FALSE, "DBWIN_BUFFER_READY");
+
+    if (!AckEvent) {
+        fprintf(stderr,
+                "dbmon: Unable to create synchronization object, err == %d\n",
+                GetLastError());
+        exit(1);
+    }
+
+    if (GetLastError() == ERROR_ALREADY_EXISTS) {
+        fprintf(stderr, "dbmon: already running\n");
+        exit(1);
+    }
+
+    ReadyEvent = CreateEvent(&sa, FALSE, FALSE, "DBWIN_DATA_READY");
+
+    if (!ReadyEvent) {
+        fprintf(stderr,
+                "dbmon: Unable to create synchronization object, err == %d\n",
+                GetLastError());
+        exit(1);
+    }
+
+    SharedFile = CreateFileMapping(
+                        (HANDLE)-1,
+                        &sa,
+                        PAGE_READWRITE,
+                        0,
+                        4096,
+                        "DBWIN_BUFFER");
+
+    if (!SharedFile) {
+        fprintf(stderr,
+                "dbmon: Unable to create file mapping object, err == %d\n",
+                GetLastError());
+        exit(1);
+    }
+
+    SharedMem = MapViewOfFile(
+                        SharedFile,
+                        FILE_MAP_READ,
+                        0,
+                        0,
+                        512);
+
+    if (!SharedMem) {
+        fprintf(stderr,
+                "dbmon: Unable to map shared memory, err == %d\n",
+                GetLastError());
+        exit(1);
+    }
+
+    String = (LPSTR)SharedMem + sizeof(DWORD);
+    pThisPid = (LPDWORD)SharedMem;
+
+    LastPid = 0xffffffff;
+    DidCR = TRUE;
+
+    SetEvent(AckEvent);
+
+    for (;;) {
+
+        ret = WaitForSingleObject(ReadyEvent, INFINITE);
+
+        if (ret != WAIT_OBJECT_0) {
+
+            fprintf(stderr, "dbmon: wait failed; err == %d\n", GetLastError());
+            exit(1);
+
+        } else {
+
+            if (LastPid != *pThisPid) {
+                LastPid = *pThisPid;
+                if (!DidCR) {
+                    putchar('\n');
+                    DidCR = TRUE;
+                }
+            }
+
+            if (DidCR) {
+                printf("%3u: ", LastPid);
+            }
+
+            printf("%s", String);
+            DidCR = (*String && (String[strlen(String) - 1] == '\n'));
+            SetEvent(AckEvent);
+
+        }
+
+    }
+}