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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2008 WiredTiger Software.
* All rights reserved.
*
* $Id$
*/
#if defined(__cplusplus)
extern "C" {
#endif
/* Basic constants. */
#define WT_FRAGMENT (512)
#define WT_MEGABYTE (1024 * 1024) /* MB */
/* Align a number to a specified power-of-2. */
#define WT_ALIGN(n, v) \
(((n) + ((v) - 1)) & ~(((uintmax_t)(v)) - 1))
/*
* Flag checking for API functions.
*/
#define WT_DB_FCHK(db, name, f, mask) \
if ((f) & ~(mask)) \
return (__wt_api_flags((db)->env, name));
#define WT_DB_FCHK_NOTFATAL(db, name, f, mask, ret) \
if ((f) & ~(mask)) \
(ret) = __wt_api_flags((db)->env, name);
#define WT_ENV_FCHK(env, name, f, mask) \
if ((f) & ~(mask)) \
return (__wt_api_flags(env, name));
#define WT_ENV_FCHK_NOTFATAL(env, name, f, mask, ret) \
if ((f) & ~(mask)) \
(ret) = __wt_api_flags(env, name);
/*
* Flag set, clear and test. They come in 3 flavors: F_XXX (handles a
* field named "flags" in the structure referenced by its argument),
* LF_XXX (handles a local variable named "flags"), and FLD_XXX (handles
* any variable, anywhere.
*/
#define F_CLR(p, mask) ((p)->flags &= ~(mask))
#define F_ISSET(p, mask) ((p)->flags & (mask) ? 1 : 0)
#define F_SET(p, mask) ((p)->flags |= (mask))
#define LF_CLR(mask) ((flags) &= ~(mask))
#define LF_ISSET(mask) ((flags) & (mask) ? 1 : 0)
#define LF_SET(mask) ((flags) |= (mask))
#define FLD_CLR(field, mask) ((field) &= ~(mask))
#define FLD_ISSET(field, mask) ((field) & (mask) ? 1 : 0)
#define FLD_SET(field, mask) ((field) |= (mask))
/* Clear a chunk of memory. */
#define WT_CLEAR(s) \
memset(&(s), 0, sizeof(s))
/* Free memory if set. */
#define WT_FREE_AND_CLEAR(env, p) do { \
if ((p) != NULL) { \
__wt_free(env, p); \
(p) = NULL; \
} \
} while (0)
/* A distinguished byte pattern to overwrite memory we are done using. */
#define OVERWRITE_BYTE 0xab
#ifdef HAVE_DIAGNOSTIC
#define WT_ASSERT(env, e) \
((e) ? (void)0 : __wt_assert(env, #e, __FILE__, __LINE__))
#else
#define WT_ASSERT(ienv, e)
#endif
#define WT_DEFAULT_FORMAT(db) \
default: \
return (__wt_database_format(db))
/*
* Standard macros that set return values and optionally branch to an error
* label.
*/
#define WT_ERR(a) { \
if ((ret = a) != 0) \
goto err; \
}
#define WT_RET(a) { \
int __ret; \
if ((__ret = a) != 0) \
return (__ret); \
}
#define WT_TRET(a) { \
int __ret; \
if ((__ret = a) != 0 && ret == 0) \
ret = __ret; \
}
#if defined(__cplusplus)
}
#endif
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