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/*****************************************************************************
Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved.
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; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*****************************************************************************/
/*****************************************************************//**
@file include/ut0dbg.h
Debug utilities for Innobase
Created 1/30/1994 Heikki Tuuri
**********************************************************************/
#ifndef ut0dbg_h
#define ut0dbg_h
#include "univ.i"
#include <stdlib.h>
#include "os0thread.h"
#if defined(__GNUC__) && (__GNUC__ > 2)
/** Test if an assertion fails.
@param EXPR assertion expression
@return nonzero if EXPR holds, zero if not */
# define UT_DBG_FAIL(EXPR) UNIV_UNLIKELY(!((ulint)(EXPR)))
#else
/** This is used to eliminate compiler warnings */
extern ulint ut_dbg_zero;
/** Test if an assertion fails.
@param EXPR assertion expression
@return nonzero if EXPR holds, zero if not */
# define UT_DBG_FAIL(EXPR) !((ulint)(EXPR) + ut_dbg_zero)
#endif
/*************************************************************//**
Report a failed assertion. */
UNIV_INTERN
void
ut_dbg_assertion_failed(
/*====================*/
const char* expr, /*!< in: the failed assertion */
const char* file, /*!< in: source file containing the assertion */
ulint line) /*!< in: line number of the assertion */
UNIV_COLD __attribute__((nonnull(2)));
#define UT_DBG_USE_ABORT
#ifndef UT_DBG_USE_ABORT
/** A null pointer that will be dereferenced to trigger a memory trap */
extern ulint* ut_dbg_null_ptr;
#endif
#if defined(UNIV_SYNC_DEBUG) || !defined(UT_DBG_USE_ABORT)
/** If this is set to TRUE by ut_dbg_assertion_failed(), all threads
will stop at the next ut_a() or ut_ad(). */
extern ibool ut_dbg_stop_threads;
/*************************************************************//**
Stop a thread after assertion failure. */
UNIV_INTERN
void
ut_dbg_stop_thread(
/*===============*/
const char* file,
ulint line);
#endif
#ifdef UT_DBG_USE_ABORT
/** Abort the execution. */
#ifdef _WIN32
# define UT_DBG_PANIC __debugbreak()
#else
# define UT_DBG_PANIC abort()
#endif
/** Stop threads (null operation) */
# define UT_DBG_STOP do {} while (0)
#else /* UT_DBG_USE_ABORT */
/** Abort the execution. */
# define UT_DBG_PANIC \
if (*(ut_dbg_null_ptr)) ut_dbg_null_ptr = NULL
/** Stop threads in ut_a(). */
# define UT_DBG_STOP do \
if (UNIV_UNLIKELY(ut_dbg_stop_threads)) { \
ut_dbg_stop_thread(__FILE__, (ulint) __LINE__); \
} while (0)
#endif /* UT_DBG_USE_ABORT */
/** Abort execution if EXPR does not evaluate to nonzero.
@param EXPR assertion expression that should hold */
#define ut_a(EXPR) do { \
if (UT_DBG_FAIL(EXPR)) { \
ut_dbg_assertion_failed(#EXPR, \
__FILE__, (ulint) __LINE__); \
UT_DBG_PANIC; \
} \
UT_DBG_STOP; \
} while (0)
/** Abort execution. */
#define ut_error do { \
ut_dbg_assertion_failed(0, __FILE__, (ulint) __LINE__); \
UT_DBG_PANIC; \
} while (0)
#ifdef UNIV_DEBUG
/** Debug assertion. Does nothing unless UNIV_DEBUG is defined. */
#define ut_ad(EXPR) ut_a(EXPR)
/** Debug statement. Does nothing unless UNIV_DEBUG is defined. */
#define ut_d(EXPR) do {EXPR;} while (0)
#else
/** Debug assertion. Does nothing unless UNIV_DEBUG is defined. */
#define ut_ad(EXPR)
/** Debug statement. Does nothing unless UNIV_DEBUG is defined. */
#define ut_d(EXPR)
#endif
/** Silence warnings about an unused variable by doing a null assignment.
@param A the unused variable */
#define UT_NOT_USED(A) A = A
#ifdef UNIV_COMPILE_TEST_FUNCS
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
/** structure used for recording usage statistics */
typedef struct speedo_struct {
struct rusage ru; /*!< getrusage() result */
struct timeval tv; /*!< gettimeofday() result */
} speedo_t;
/*******************************************************************//**
Resets a speedo (records the current time in it). */
UNIV_INTERN
void
speedo_reset(
/*=========*/
speedo_t* speedo); /*!< out: speedo */
/*******************************************************************//**
Shows the time elapsed and usage statistics since the last reset of a
speedo. */
UNIV_INTERN
void
speedo_show(
/*========*/
const speedo_t* speedo); /*!< in: speedo */
#endif /* UNIV_COMPILE_TEST_FUNCS */
#endif
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