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include/QxMemLeak/pctimer.h

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+// -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+// vim:tabstop=4:shiftwidth=4:expandtab:
+
+/*
+ * Copyright (C) 2004-2008 Wu Yongwei <adah at users dot sourceforge dot net>
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.  In no event will the authors be held liable for any
+ * damages arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute
+ * it freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must
+ *    not claim that you wrote the original software.  If you use this
+ *    software in a product, an acknowledgement in the product
+ *    documentation would be appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must
+ *    not be misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source
+ *    distribution.
+ *
+ * This file is part of Stones of Nvwa:
+ *      http://sourceforge.net/projects/nvwa
+ *
+ */
+
+/*!
+ * \file    pctimer.h
+ * \ingroup QxMemLeak
+ *
+ * Function to get a high-resolution timer for Win32/Cygwin/Unix.
+ *
+ * \version 1.6, 2004/08/02
+ * \author  Wu Yongwei
+ *
+ */
+
+#ifndef QT_NO_DEBUG
+#ifndef _QX_MODE_RELEASE
+#if _QX_USE_MEM_LEAK_DETECTION
+#ifndef _PCTIMER_H
+
+namespace qx {
+namespace memory {
+
+typedef double pctimer_t;
+
+} // namespace memory
+} // namespace qx
+
+#if defined(_WIN32) || defined(__CYGWIN__)
+
+#ifndef _WIN32
+#define _PCTIMER_NO_WIN32
+#endif /* _WIN32 */
+
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif /* WIN32_LEAN_AND_MEAN */
+#include <windows.h>
+
+#ifdef _PCTIMER_NO_WIN32
+#undef _PCTIMER_NO_WIN32
+#undef _WIN32
+#endif /* _PCTIMER_NO_WIN32 */
+
+namespace qx {
+namespace memory {
+
+__inline pctimer_t pctimer(void)
+{
+    static LARGE_INTEGER __pcount, __pcfreq;
+    static int __initflag;
+
+    if (!__initflag)
+    {
+        QueryPerformanceFrequency(&__pcfreq);
+        __initflag++;
+    }
+
+    QueryPerformanceCounter(&__pcount);
+    return (double)__pcount.QuadPart / (double)__pcfreq.QuadPart;
+}
+
+} // namespace memory
+} // namespace qx
+
+#else /* Not Win32/Cygwin */
+
+#include <sys/time.h>
+
+namespace qx {
+namespace memory {
+
+__inline pctimer_t pctimer(void)
+{
+    struct timeval __tv;
+    gettimeofday(&__tv, NULL);
+    return (double)__tv.tv_sec + (double)__tv.tv_usec / 1000000;
+}
+
+} // namespace memory
+} // namespace qx
+
+#endif /* Win32/Cygwin */
+
+#endif /* _PCTIMER_H */
+#endif // _QX_USE_MEM_LEAK_DETECTION
+#endif // _QX_MODE_RELEASE
+#endif // QT_NO_DEBUG