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/*-
* 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
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