1 files changed, 187 insertions, 0 deletions
diff --git a/src/base/Profiler.cpp b/src/base/Profiler.cpp
new file mode 100644
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--- /dev/null
+++ b/src/base/Profiler.cpp
@@ -0,0 +1,187 @@
+// -*- c-basic-offset: 4 -*-
+
+/*
+    Rosegarden
+    A sequencer and musical notation editor.
+
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <[email protected]>,
+        Chris Cannam        <[email protected]>,
+        Richard Bown        <[email protected]>
+
+    The moral right of the authors to claim authorship of this work
+    has been asserted.
+
+    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.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#include <iostream>
+#include "Profiler.h"
+
+#include <vector>
+#include <algorithm>
+
+//#define NO_TIMING 1
+
+#ifdef NDEBUG
+#define NO_TIMING 1
+#endif
+
+using std::cerr;
+using std::endl;
+
+namespace Rosegarden 
+{
+
+Profiles* Profiles::m_instance = 0;
+
+Profiles* Profiles::getInstance()
+{
+    if (!m_instance) m_instance = new Profiles();
+    
+    return m_instance;
+}
+
+Profiles::Profiles()
+{
+}
+
+Profiles::~Profiles()
+{
+    dump();
+}
+
+void Profiles::accumulate(const char* id, clock_t time, RealTime rt)
+{
+#ifndef NO_TIMING    
+    ProfilePair &pair(m_profiles[id]);
+    ++pair.first;
+    pair.second.first += time;
+    pair.second.second = pair.second.second + rt;
+
+    TimePair &timePair(m_lastCalls[id]);
+    timePair.first = time;
+    timePair.second = rt;
+#endif
+}
+
+void Profiles::dump()
+{
+#ifndef NO_TIMING    
+    cerr << "Profiles::dump() :\n";
+
+    // I'm finding these two confusing dumped out in random order,
+    // so I'm going to sort them alphabetically:
+
+    std::vector<const char *> profileNames;
+    for (ProfileMap::iterator i = m_profiles.begin();
+	 i != m_profiles.end(); ++i) {
+	profileNames.push_back((*i).first);
+    }
+
+    std::sort(profileNames.begin(), profileNames.end());
+
+    for (std::vector<const char *>::iterator i = profileNames.begin();
+	 i != profileNames.end(); ++i) {
+
+        cerr << "-> " << *i << ":  CPU: " 
+	     << m_profiles[*i].first << " calls, "
+	     << int((m_profiles[*i].second.first * 1000.0) / CLOCKS_PER_SEC) << "ms, "
+	     << (((double)m_profiles[*i].second.first * 1000000.0 /
+		  (double)m_profiles[*i].first) / CLOCKS_PER_SEC) << "us/call"
+	     << endl;
+
+        cerr << "-> " << *i << ": real: " 
+	     << m_profiles[*i].first << " calls, "
+	     << m_profiles[*i].second.second << ", "
+	     << (m_profiles[*i].second.second / m_profiles[*i].first)
+	     << "/call"
+	     << endl;
+
+	cerr << "-> " << *i << ": last:  CPU: "
+	     << int((m_lastCalls[*i].first * 1000.0) / CLOCKS_PER_SEC) << "ms, "
+	     << "   real: "
+	     << m_lastCalls[*i].second << endl;
+    }
+
+    cerr << "Profiles::dump() finished\n";
+#endif
+}
+
+Profiler::Profiler(const char* c, bool showOnDestruct)
+    : m_c(c),
+      m_showOnDestruct(showOnDestruct)
+{
+#ifndef NO_TIMING
+    m_startCPU = clock();
+
+    struct timeval tv;
+    (void)gettimeofday(&tv, 0);
+    m_startTime = RealTime(tv.tv_sec, tv.tv_usec * 1000);
+#endif
+}
+
+void
+Profiler::update()
+{
+#ifndef NO_TIMING
+    clock_t elapsedCPU = clock() - m_startCPU;
+
+    struct timeval tv;
+    (void)gettimeofday(&tv, 0);
+    RealTime elapsedTime = RealTime(tv.tv_sec, tv.tv_usec * 1000) - m_startTime;
+
+    cerr << "Profiler : id = " << m_c
+	 << " - elapsed so far = " << ((elapsedCPU * 1000) / CLOCKS_PER_SEC)
+	 << "ms CPU, " << elapsedTime << " real" << endl;
+#endif
+}    
+
+Profiler::~Profiler()
+{
+#ifndef NO_TIMING
+    clock_t elapsedCPU = clock() - m_startCPU;
+
+    struct timeval tv;
+    (void)gettimeofday(&tv, 0);
+    RealTime elapsedTime = RealTime(tv.tv_sec, tv.tv_usec * 1000) - m_startTime;
+
+    Profiles::getInstance()->accumulate(m_c, elapsedCPU, elapsedTime);
+
+    if (m_showOnDestruct)
+        cerr << "Profiler : id = " << m_c
+             << " - elapsed = " << ((elapsedCPU * 1000) / CLOCKS_PER_SEC)
+	     << "ms CPU, " << elapsedTime << " real" << endl;
+#endif
+}
+ 
+}
+
+/* A little usage demo
+
+int main()
+{
+    {
+        Profiler foo("test");
+        sleep(1);
+    }
+
+    {
+        Profiler foo("test");
+        sleep(1);
+    }
+
+    {
+        Profiler foo("test2");
+        sleep(1);
+    }
+    
+    Profiles::getInstance()->dump();
+
+    return 0;
+}
+*/