1 files changed, 85 insertions, 0 deletions
diff --git a/src/pmdas/windows/pdhlist.c b/src/pmdas/windows/pdhlist.c
new file mode 100644
index 0000000..387f139
--- /dev/null
+++ b/src/pmdas/windows/pdhlist.c
@@ -0,0 +1,85 @@
+/*
+ * List Windows performance counters on the current platform.
+ *
+ * Copyright (c) 2006, Ken McDonell.  All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <windows.h>
+#include <pdh.h>
+#include <pdhmsg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static int verbose;
+extern char *pdherrstr(int);
+#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
+
+void
+expand(char *pat)
+{
+    LPTSTR		ptr;
+    LPSTR		buf = NULL;
+    DWORD		bufsz = 0;
+    int			i;
+    PDH_STATUS  	pdhsts;
+
+    // Iterate because size grows in first couple of attempts!
+    for (i = 0; i < 5; i++) {
+	if (bufsz && (buf = (LPSTR)malloc(bufsz)) == NULL) {
+	    fprintf(stderr, "malloc %ld failed for pattern: %s\n", bufsz, pat);
+	    return;
+	}
+	if (verbose)
+	    fprintf(stderr, "ExpandCounters pattern: %s\n", pat);
+	if ((pdhsts = PdhExpandCounterPathA(pat, buf, &bufsz)) == PDH_MORE_DATA) {
+	    // bufsz has the required length (minus the last NULL)
+	    bufsz = roundup(bufsz + 1, 64);
+	    free(buf);
+	}
+	else
+	    break;
+    }
+
+    if (pdhsts == PDH_CSTATUS_VALID_DATA) {
+	// success, print all counters
+	ptr = buf;
+	while (*ptr) {
+	    printf("%s\n", ptr);
+	    ptr += strlen(ptr) + 1;
+	}
+    }
+    else {
+	fprintf(stderr, "PdhExpandCounterPathA failed: %s\n", pdherrstr(pdhsts));
+	if (pdhsts == PDH_MORE_DATA)
+	    fprintf(stderr, "still need to resize buffer to %ld\n", bufsz);
+    }
+
+    fflush(stderr);
+    fflush(stdin);
+}
+
+int
+main(int argc, char **argv)
+{
+    int	i;
+
+    if (argc == 1) {
+	expand("\\*\\*");
+	expand("\\*(*)\\*");
+	return 0;
+    }
+
+    for (i = 1; i < argc; i++)
+	expand(argv[i]);
+    return 0;
+}