Add support for event tracking. Esentially this puts a sequence

of events into the database for a given run.

base/stats/mysql.cc:
base/stats/mysql.hh:
    reorganize mysql stat stuff so that other stuff can use
    the same database connection
base/traceflags.py:
    Trace flag to print out events

--HG--
extra : convert_revision : 4d502532ed0ba40b42baefee46b2c99defcc620c

1 files changed, 63 insertions, 0 deletions

diff --git a/base/stats/events.hh b/base/stats/events.hh
new file mode 100644
index 000000000..49c060645
--- /dev/null
+++ b/base/stats/events.hh
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2004 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __BASE_STATS_EVENTS_HH__
+#define __BASE_STATS_EVENTS_HH__
+
+#include <string>
+
+#include "base/trace.hh"
+
+namespace Stats {
+
+extern Tick EventStart;
+
+#ifdef USE_MYSQL
+void __event(const std::string &stat);
+bool MySqlConnected();
+#endif
+
+inline void
+recordEvent(const std::string &stat)
+{
+    if (EventStart > curTick)
+        return;
+
+    DPRINTF(StatEvents, "Statistics Event: %s\n", stat);
+
+#ifdef USE_MYSQL
+    if (!MySqlConnected())
+        return;
+
+    __event(stat);
+#endif
+}
+
+/* namespace Stats */ }
+
+#endif // __BASE_STATS_EVENTS_HH__