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/*********************************************************************
Debug utilities for Innobase
(c) 1994, 1995 Innobase Oy
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)
# define UT_DBG_FAIL(EXPR) UNIV_UNLIKELY(!((ulint)(EXPR)))
#else
extern ulint ut_dbg_zero; /* This is used to eliminate
compiler warnings */
# define UT_DBG_FAIL(EXPR) !((ulint)(EXPR) + ut_dbg_zero)
#endif
/*****************************************************************
Report a failed assertion. */
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 */
#ifdef __NETWARE__
/* Flag for ignoring further assertion failures.
On NetWare, have a graceful exit rather than a segfault to avoid abends. */
extern ibool panic_shutdown;
/* Abort the execution. */
void ut_dbg_panic(void);
# define UT_DBG_PANIC ut_dbg_panic()
/* Stop threads in ut_a(). */
# define UT_DBG_STOP while (0) /* We do not do this on NetWare */
#else /* __NETWARE__ */
/* Flag for indicating that all threads should stop. This will be set
by ut_dbg_assertion_failed(). */
extern ibool ut_dbg_stop_threads;
/* A null pointer that will be dereferenced to trigger a memory trap */
extern ulint* ut_dbg_null_ptr;
/*****************************************************************
Stop a thread after assertion failure. */
void
ut_dbg_stop_thread(
/*===============*/
const char* file,
ulint line);
/* 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 /* __NETWARE__ */
/* Abort execution if EXPR does not evaluate to nonzero. */
#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
#define ut_ad(EXPR) ut_a(EXPR)
#define ut_d(EXPR) do {EXPR;} while (0)
#else
#define ut_ad(EXPR)
#define ut_d(EXPR)
#endif
#define UT_NOT_USED(A) A = A
#endif
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