1 /*- 2 * See the file LICENSE for redistribution information. 3 * 4 * Copyright (c) 1997, 1998 5 * Sleepycat Software. All rights reserved. 6 */ 7 8 #include "config.h" 9 10 #ifndef lint 11 static const char sccsid[] = "@(#)os_config.c 10.30 (Sleepycat) 10/12/98"; 12 #endif /* not lint */ 13 14 #ifndef NO_SYSTEM_INCLUDES 15 #include <sys/types.h> 16 17 #include <errno.h> 18 #endif 19 20 #include "db_int.h" 21 #include "os_jump.h" 22 23 struct __db_jumptab __db_jump; 24 25 DB_GLOBALS __db_global_values = { 26 1, /* DB_MUTEXLOCKS */ 27 0, /* DB_PAGEYIELD */ 28 0, /* DB_REGION_ANON, DB_REGION_NAME */ 29 0, /* DB_REGION_INIT */ 30 0, /* DB_TSL_SPINS */ 31 {NULL, &__db_global_values.db_envq.tqh_first}, /* Environemnt queue */ 32 {NULL, &__db_global_values.db_nameq.tqh_first} /* Name queue */ 33 }; 34 35 /* 36 * db_jump_set -- 37 * Replace functions for the DB package. 38 */ 39 int 40 db_jump_set(func, which) 41 void *func; 42 int which; 43 { 44 switch (which) { 45 case DB_FUNC_CLOSE: 46 __db_jump.j_close = (int (*) __P((int)))func; 47 break; 48 case DB_FUNC_DIRFREE: 49 __db_jump.j_dirfree = (void (*) __P((char **, int)))func; 50 break; 51 case DB_FUNC_DIRLIST: 52 __db_jump.j_dirlist = 53 (int (*) __P((const char *, char ***, int *)))func; 54 break; 55 case DB_FUNC_EXISTS: 56 __db_jump.j_exists = (int (*) __P((const char *, int *)))func; 57 break; 58 case DB_FUNC_FREE: 59 __db_jump.j_free = (void (*) __P((void *)))func; 60 break; 61 case DB_FUNC_FSYNC: 62 __db_jump.j_fsync = (int (*) __P((int)))func; 63 break; 64 case DB_FUNC_IOINFO: 65 __db_jump.j_ioinfo = (int (*) __P((const char *, 66 int, u_int32_t *, u_int32_t *, u_int32_t *)))func; 67 break; 68 case DB_FUNC_MALLOC: 69 __db_jump.j_malloc = (void *(*) __P((size_t)))func; 70 break; 71 case DB_FUNC_MAP: 72 __db_jump.j_map = (int (*) 73 __P((char *, int, size_t, int, int, int, void **)))func; 74 break; 75 case DB_FUNC_OPEN: 76 __db_jump.j_open = (int (*) __P((const char *, int, ...)))func; 77 break; 78 case DB_FUNC_READ: 79 __db_jump.j_read = 80 (ssize_t (*) __P((int, void *, size_t)))func; 81 break; 82 case DB_FUNC_REALLOC: 83 __db_jump.j_realloc = (void *(*) __P((void *, size_t)))func; 84 break; 85 case DB_FUNC_RUNLINK: 86 __db_jump.j_runlink = (int (*) __P((char *)))func; 87 break; 88 case DB_FUNC_SEEK: 89 __db_jump.j_seek = (int (*) 90 __P((int, size_t, db_pgno_t, u_int32_t, int, int)))func; 91 break; 92 case DB_FUNC_SLEEP: 93 __db_jump.j_sleep = (int (*) __P((u_long, u_long)))func; 94 break; 95 case DB_FUNC_UNLINK: 96 __db_jump.j_unlink = (int (*) __P((const char *)))func; 97 break; 98 case DB_FUNC_UNMAP: 99 __db_jump.j_unmap = (int (*) __P((void *, size_t)))func; 100 break; 101 case DB_FUNC_WRITE: 102 __db_jump.j_write = 103 (ssize_t (*) __P((int, const void *, size_t)))func; 104 break; 105 case DB_FUNC_YIELD: 106 __db_jump.j_yield = (int (*) __P((void)))func; 107 break; 108 default: 109 return (EINVAL); 110 } 111 return (0); 112 } 113 114 /* 115 * db_value_set -- 116 * Replace values for the DB package. 117 */ 118 int 119 db_value_set(value, which) 120 int value, which; 121 { 122 int ret; 123 124 switch (which) { 125 case DB_MUTEXLOCKS: 126 DB_GLOBAL(db_mutexlocks) = value; 127 break; 128 case DB_PAGEYIELD: 129 DB_GLOBAL(db_pageyield) = value; 130 break; 131 case DB_REGION_ANON: 132 if (value != 0 && (ret = __db_mapanon_ok(0)) != 0) 133 return (ret); 134 DB_GLOBAL(db_region_anon) = value; 135 break; 136 case DB_REGION_INIT: 137 DB_GLOBAL(db_region_init) = value; 138 break; 139 case DB_REGION_NAME: 140 if (value != 0 && (ret = __db_mapanon_ok(1)) != 0) 141 return (ret); 142 DB_GLOBAL(db_region_anon) = value; 143 break; 144 case DB_TSL_SPINS: 145 if (value <= 0) 146 return (EINVAL); 147 DB_GLOBAL(db_tsl_spins) = value; 148 break; 149 default: 150 return (EINVAL); 151 } 152 return (0); 153 } 154