1 files changed, 103 insertions, 0 deletions
diff --git a/src/dbinc/perfmon.h b/src/dbinc/perfmon.h
new file mode 100644
index 00000000..c3b9b9fa
--- /dev/null
+++ b/src/dbinc/perfmon.h
@@ -0,0 +1,103 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 2010, 2012 Oracle and/or its affiliates.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#ifndef _DB_PERFMON_H_
+#define	_DB_PERFMON_H_
+
+/*******************************************************
+ * Oracle Berkeley DB Performance Event Monitoring
+ *
+ * Some events inside of Oracle Berkeley DB can be 'published'
+ * to the operating environment's performance tracing system
+ * as they occur. Current support includes
+ *	--enable-dtrace
+ *		Solaris
+ *		Linux (via SystemTap's dtrace wrappers)
+ *		Darwin (Mac OS X)
+ *		QNX(?)  
+ *
+ ******************************************************/
+
+/*
+ * The performance monitoring system can display many of the statistics which
+ * are obtainable through the {DB,DB_ENV}->xxx_stat() functions. By default
+ * they are excluded. They can be enabled with --enable-perfmon-statistics.
+ */
+#ifdef HAVE_PERFMON_STATISTICS
+#define STAT_PERFMON1(env, cat, id, a1)		PERFMON1(env, cat, id, (a1))
+#define STAT_PERFMON2(env, cat, id, a1, a2) 	\
+    PERFMON2(env, cat, id, (a1), (a2))
+#define STAT_PERFMON3(env, cat, id, a1, a2, a3)	\
+    PERFMON3(env, cat, id, (a1), (a2), (a3))
+#else
+#define STAT_PERFMON1(env, cat, id, a1)		NOP_STATEMENT
+#define STAT_PERFMON2(env, cat, id, a1, a2)	NOP_STATEMENT
+#define STAT_PERFMON3(env, cat, id, a1, a2, a3)	NOP_STATEMENT
+#endif
+
+
+#if defined(HAVE_PERFMON) && defined(HAVE_STATISTICS)
+/*
+ * The DTrace macros which are generated at configure time in db_provider.h can
+ * have full function signatures. These declarations are needed for compilation
+ * when DTrace support is enabled. It is "too early" in the include sequence
+ * to include the header files which define these structs.
+ */
+struct _db_page;
+struct __bh;
+struct __db_dbt;
+struct __sh_dbt;
+struct __db_mutex_t;
+
+#if defined(HAVE_DTRACE)
+/*
+ * Solaris 10, Darwin/Mac OS X starting in 10.6 (Snow Leopard), Linux with
+ * the DTrace-compatible version of SystemTap, possibly QNX.
+ */
+#include "db_provider.h"
+
+#define PERFMON0(env, cat, id)		bdb_##cat##_##id()
+#define PERFMON1(env, cat, id, a1)	bdb_##cat##_##id(a1)
+#define PERFMON2(env, cat, id, a1, a2)					\
+    bdb_##cat##_##id((a1), (a2))
+#define PERFMON3(env, cat, id, a1, a2, a3)				\
+    do {								\
+    	if (PERFMON_ENABLED(env, cat, id))				\
+	    bdb_##cat##_##id((a1), (a2), (a3));			\
+    } while (0)
+#define PERFMON4(env, cat, id, a1, a2, a3, a4)				\
+    do {								\
+    	if (PERFMON_ENABLED(env, cat, id))				\
+	    bdb_##cat##_##id((a1), (a2), (a3), (a4));			\
+    } while (0)
+#define PERFMON5(env, cat, id, a1, a2, a3, a4, a5)			\
+    do {								\
+    	if (PERFMON_ENABLED(env, cat, id))				\
+	    bdb_##cat##_##id((a1), (a2), (a3), (a4), (a5));		\
+    } while (0)
+#define PERFMON6(env, cat, id, a1, a2, a3, a4, a5, a6)			\
+    do {								\
+    	if (PERFMON_ENABLED(env, cat, id))				\
+	    bdb_##cat##_##id((a1), (a2), (a3), (a4), (a5), (a6));	\
+    } while (0)
+#define PERFMON_ENABLED(env, cat, id)	 bdb_##cat##_##id##_enabled()
+#endif
+
+#else
+/* Without HAVE_PERFMON or HAVE_STATISTICS these macros map to null bodies. */
+#define PERFMON0(env, cat, id)				NOP_STATEMENT
+#define PERFMON1(env, cat, id, a1)			NOP_STATEMENT
+#define PERFMON2(env, cat, id, a1, a2)			NOP_STATEMENT
+#define PERFMON3(env, cat, id, a1, a2, a3)		NOP_STATEMENT
+#define PERFMON4(env, cat, id, a1, a2, a3, a4)		NOP_STATEMENT
+#define PERFMON5(env, cat, id, a1, a2, a3, a4, a5)	NOP_STATEMENT
+#define PERFMON6(env, cat, id, a1, a2, a3, a4, a5, a6)	NOP_STATEMENT
+#define PERFMON_ENABLED(env, cat, id)	 		FALSE
+#endif
+
+#endif