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Diffstat (limited to 'debian/htdig/htdig-3.2.0b6/db/db_int.h')
| -rw-r--r-- | debian/htdig/htdig-3.2.0b6/db/db_int.h | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/debian/htdig/htdig-3.2.0b6/db/db_int.h b/debian/htdig/htdig-3.2.0b6/db/db_int.h new file mode 100644 index 00000000..2f9153a1 --- /dev/null +++ b/debian/htdig/htdig-3.2.0b6/db/db_int.h @@ -0,0 +1,305 @@ +/*- + * See the file LICENSE for redistribution information. + * + * Copyright (c) 1996, 1997, 1998, 1999 + * Sleepycat Software. All rights reserved. + * + * @(#)db_int.src 11.6 (Sleepycat) 10/1/99 + */ + +#ifndef _DB_INTERNAL_H_ +#define _DB_INTERNAL_H_ + +/******************************************************* + * General includes. + *******************************************************/ +#include "db.h" + +#ifndef _MSC_VER /* WIN32 */ +#ifndef NO_SYSTEM_INCLUDES +#ifdef __STDC__ +#include <stdarg.h> +#else +#include <varargs.h> +#endif +#endif +#endif + +#include "queue.h" +#include "shqueue.h" + +/******************************************************* + * General purpose constants and macros. + *******************************************************/ +#define UINT16_T_MAX 0xffff /* Maximum 16 bit unsigned. */ +#define UINT32_T_MAX 0xffffffff /* Maximum 32 bit unsigned. */ + +#define MEGABYTE 1048576 +#define GIGABYTE 1073741824 + +#define MS_PER_SEC 1000 /* Milliseconds in a second. */ +#define USEC_PER_MS 1000 /* Microseconds in a millisecond. */ + +#define DB_MIN_PGSIZE 0x000200 /* Minimum page size (512). */ +#define DB_MAX_PGSIZE 0x010000 /* Maximum page size (65536). */ + +#define RECNO_OOB 0 /* Illegal record number. */ + +/* + * If we are unable to determine the underlying filesystem block size, use + * 8K on the grounds that most OS's use less than 8K for a VM page size. + */ +#define DB_DEF_IOSIZE (8 * 1024) + +/* + * Aligning items to particular sizes or in pages or memory. ALIGNP is a + * separate macro, as we've had to cast the pointer to different integral + * types on different architectures. + * + * We cast pointers into unsigned longs when manipulating them because C89 + * guarantees that u_long is the largest available integral type and further, + * to never generate overflows. However, neither C89 or C9X requires that + * any integer type be large enough to hold a pointer, although C9X created + * the intptr_t type, which is guaranteed to hold a pointer but may or may + * not exist. At some point in the future, we should test for intptr_t and + * use it where available. + */ +#undef ALIGNTYPE +#define ALIGNTYPE u_long +#undef ALIGNP +#define ALIGNP(value, bound) ALIGN((ALIGNTYPE)value, bound) +#undef ALIGN +#define ALIGN(value, bound) (((value) + (bound) - 1) & ~(((u_int)bound) - 1)) + +/* + * There are several on-page structures that are declared to have a number of + * fields followed by a variable length array of items. The structure size + * without including the variable length array or the address of the first of + * those elements can be found using SSZ. + * + * This macro can also be used to find the offset of a structure element in a + * structure. This is used in various places to copy structure elements from + * unaligned memory references, e.g., pointers into a packed page. + * + * There are two versions because compilers object if you take the address of + * an array. + */ +#undef SSZ +#define SSZ(name, field) ((int)&(((name *)0)->field)) + +#undef SSZA +#define SSZA(name, field) ((int)&(((name *)0)->field[0])) + +/* Structure used to print flag values. */ +typedef struct __fn { + u_int32_t mask; /* Flag value. */ + const char *name; /* Flag name. */ +} FN; + +/* Set, clear and test flags. */ +#define FLD_CLR(fld, f) (fld) &= ~(f) +#define FLD_ISSET(fld, f) ((fld) & (f)) +#define FLD_SET(fld, f) (fld) |= (f) +#define F_CLR(p, f) (p)->flags &= ~(f) +#define F_ISSET(p, f) ((p)->flags & (f)) +#define F_SET(p, f) (p)->flags |= (f) +#define LF_CLR(f) (flags &= ~(f)) +#define LF_ISSET(f) (flags & (f)) +#define LF_SET(f) (flags |= (f)) + +/* Display separator string. */ +#undef DB_LINE +#define DB_LINE "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=" + +/* Unused, or not-used-yet variable. "Shut that bloody compiler up!" */ +#define COMPQUIET(n, v) (n) = (v) + +/* + * Purify and similar run-time tools complain about unitialized reads/writes + * for structure fields whose only purpose is padding. + */ +#define UMRW(v) (v) = 0 + +/******************************************************* + * Files. + *******************************************************/ + /* + * We use 1024 as the maximum path length. It's too hard to figure out what + * the real path length is, as it was traditionally stored in <sys/param.h>, + * and that file isn't always available. + */ +#undef MAXPATHLEN +#define MAXPATHLEN 1024 + +#define PATH_DOT "." /* Current working directory. */ +#define PATH_SEPARATOR "/" /* Path separator character. */ + +/* + * Flags understood by CDB___os_open. + */ +#define DB_OSO_CREATE 0x001 /* POSIX: O_CREAT */ +#define DB_OSO_EXCL 0x002 /* POSIX: O_EXCL */ +#define DB_OSO_LOG 0x004 /* Opening a log file. */ +#define DB_OSO_RDONLY 0x008 /* POSIX: O_RDONLY */ +#define DB_OSO_SEQ 0x010 /* Expected sequential access. */ +#define DB_OSO_TEMP 0x020 /* Remove after last close. */ +#define DB_OSO_TRUNC 0x040 /* POSIX: O_TRUNC */ + +/* + * Seek options understood by CDB___os_seek. + */ +typedef enum { + DB_OS_SEEK_CUR, /* POSIX: SEEK_CUR */ + DB_OS_SEEK_END, /* POSIX: SEEK_END */ + DB_OS_SEEK_SET /* POSIX: SEEK_SET */ +} DB_OS_SEEK; + +/******************************************************* + * Environment. + *******************************************************/ +/* Type passed to CDB___db_appname(). */ +typedef enum { + DB_APP_NONE=0, /* No type (region). */ + DB_APP_DATA, /* Data file. */ + DB_APP_LOG, /* Log file. */ + DB_APP_TMP /* Temporary file. */ +} APPNAME; + +/* Most initialization methods cannot be called after open is called. */ +#define ENV_ILLEGAL_AFTER_OPEN(dbenv, name) \ + if (F_ISSET((dbenv), DB_ENV_OPEN_CALLED)) \ + return (CDB___db_mi_open(dbenv, name, 1)); + +/* We're not actually user hostile, honest. */ +#define ENV_REQUIRES_CONFIG(dbenv, handle, subsystem) \ + if (handle == NULL) \ + return (CDB___db_env_config(dbenv, subsystem)); + +/******************************************************* + * Database Access Methods. + *******************************************************/ +/* Initialization methods are often illegal before/after open is called. */ +#define DB_ILLEGAL_AFTER_OPEN(dbp, name) \ + if (F_ISSET((dbp), DB_OPEN_CALLED)) \ + return (CDB___db_mi_open(dbp->dbenv, name, 1)); +#define DB_ILLEGAL_BEFORE_OPEN(dbp, name) \ + if (!F_ISSET((dbp), DB_OPEN_CALLED)) \ + return (CDB___db_mi_open(dbp->dbenv, name, 0)); +/* Some initialization methods are illegal if environment isn't local. */ +#define DB_ILLEGAL_IN_ENV(dbp, name) \ + if (!F_ISSET(dbp->dbenv, DB_ENV_DBLOCAL)) \ + return (CDB___db_mi_env(dbp->dbenv, name)); +#define DB_ILLEGAL_METHOD(dbp, flags) { \ + int __ret; \ + if ((__ret = CDB___dbh_am_chk(dbp, flags)) != 0) \ + return (__ret); \ +} + +/******************************************************* + * Mpool. + *******************************************************/ +/* + * File types for DB access methods. Negative numbers are reserved to DB. + */ +#define DB_FTYPE_SET -1 /* Call pgin/pgout functions. */ +#define DB_FTYPE_NOTSET 0 /* Don't call... */ + +/* Structure used as the DB pgin/pgout pgcookie. */ +typedef struct __dbpginfo { + size_t db_pagesize; /* Underlying page size. */ + int needswap; /* If swapping required. */ +} DB_PGINFO; + +/******************************************************* + * Log. + *******************************************************/ +/* Initialize an LSN to 'zero'. */ +#define ZERO_LSN(LSN) { \ + (LSN).file = 0; \ + (LSN).offset = 0; \ +} + +/* Return 1 if LSN is a 'zero' lsn, otherwise return 0. */ +#define IS_ZERO_LSN(LSN) ((LSN).file == 0) + +/* Test if we need to log a change. */ +#define DB_LOGGING(dbc) \ + (F_ISSET((dbc)->dbp->dbenv, DB_ENV_LOGGING) && \ + !F_ISSET(dbc, DBC_RECOVER)) + +/******************************************************* + * Txn. + *******************************************************/ +#define DB_NONBLOCK(C) ((C)->txn != NULL && F_ISSET((C)->txn, TXN_NOWAIT)) + +/******************************************************* + * Global variables. + *******************************************************/ +/* + * !!! + * Initialized in env/env_method.c, don't change this without changing that. + */ +typedef struct __db_globals { + u_int32_t db_mutexlocks; /* db_set_mutexlocks */ + u_int32_t db_pageyield; /* db_set_pageyield */ + u_int32_t db_panic; /* db_set_panic */ + u_int32_t db_region_init; /* db_set_region_init */ + u_int32_t db_tas_spins; /* db_set_tas_spins */ + /* XA: list of opened environments. */ + TAILQ_HEAD(__db_envq, __db_env) db_envq; +} DB_GLOBALS; + +extern DB_GLOBALS CDB___db_global_values; +#define DB_GLOBAL(v) CDB___db_global_values.v + +/* Forward structure declarations. */ +struct __db_reginfo_t; typedef struct __db_reginfo_t REGINFO; +struct __mutex_t; typedef struct __mutex_t MUTEX; + +/******************************************************* + * More general includes. + *******************************************************/ +#include "debug.h" +#include "mutex.h" +#include "mutex_ext.h" +#include "region.h" +#include "env_ext.h" +#include "os.h" +#include "os_ext.h" +#include "common_ext.h" + + +/******************************************************* + * Stuff not defined in native WIN32 Env. + *******************************************************/ +#ifdef _MSC_VER /* _WIN32 */ + +#include <windows.h> + +#define S_IRGRP 0 /* R for group */ +#define S_IWGRP 0 /* W for group */ +#define S_IROTH 0 /* R for other */ +#define S_IWOTH 0 /* W for other */ +#endif + +#ifdef _MSC_VER +#ifndef S_IRUSR +#if defined(_WIN32) || defined(WIN16) +#define S_IRUSR S_IREAD /* R for owner */ +#define S_IWUSR S_IWRITE /* W for owner */ +#define S_IRGRP 0 /* R for group */ +#define S_IWGRP 0 /* W for group */ +#define S_IROTH 0 /* R for other */ +#define S_IWOTH 0 /* W for other */ +#else +#define S_IRUSR 0000400 /* R for owner */ +#define S_IWUSR 0000200 /* W for owner */ +#define S_IRGRP 0000040 /* R for group */ +#define S_IWGRP 0000020 /* W for group */ +#define S_IROTH 0000004 /* R for other */ +#define S_IWOTH 0000002 /* W for other */ +#endif /* _WIN32 || WIN16 */ +#endif +#endif + +#endif /* !_DB_INTERNAL_H_ */ |