| 1 | /* |
| 2 | * (c) Copyright 1990-1996 OPEN SOFTWARE FOUNDATION, INC. |
| 3 | * (c) Copyright 1990-1996 HEWLETT-PACKARD COMPANY |
| 4 | * (c) Copyright 1990-1996 DIGITAL EQUIPMENT CORPORATION |
| 5 | * (c) Copyright 1991, 1992 Siemens-Nixdorf Information Systems |
| 6 | * To anyone who acknowledges that this file is provided "AS IS" without |
| 7 | * any express or implied warranty: permission to use, copy, modify, and |
| 8 | * distribute this file for any purpose is hereby granted without fee, |
| 9 | * provided that the above copyright notices and this notice appears in |
| 10 | * all source code copies, and that none of the names listed above be used |
| 11 | * in advertising or publicity pertaining to distribution of the software |
| 12 | * without specific, written prior permission. None of these organizations |
| 13 | * makes any representations about the suitability of this software for |
| 14 | * any purpose. |
| 15 | */ |
| 16 | /* |
| 17 | * Header file for attributes object |
| 18 | */ |
| 19 | |
| 20 | #ifndef CMA_ATTR |
| 21 | #define CMA_ATTR |
| 22 | |
| 23 | /* |
| 24 | * INCLUDE FILES |
| 25 | */ |
| 26 | |
| 27 | #include <cma_defs.h> |
| 28 | #include <cma_queue.h> |
| 29 | #ifdef __hpux |
| 30 | # include <sys/param.h> |
| 31 | #endif |
| 32 | #if _CMA_UNIX_TYPE == _CMA__SVR4 |
| 33 | #include <sys/unistd.h> |
| 34 | #endif |
| 35 | /* |
| 36 | * CONSTANTS AND MACROS |
| 37 | */ |
| 38 | |
| 39 | \f |
| 40 | /* |
| 41 | * FUNCTIONAL DESCRIPTION: |
| 42 | * |
| 43 | * cma__int_attr_get_priority - Performs the work of cma_attr_get_priority |
| 44 | * |
| 45 | * FORMAL PARAMETERS: |
| 46 | * |
| 47 | * cma_t_attr *_att_ - Attribute object to get from |
| 48 | * cma_t_priority *_setting_ - Current setting |
| 49 | * |
| 50 | * IMPLICIT INPUTS: |
| 51 | * |
| 52 | * none |
| 53 | * |
| 54 | * IMPLICIT OUTPUTS: |
| 55 | * |
| 56 | * priority |
| 57 | * |
| 58 | * FUNCTION VALUE: |
| 59 | * |
| 60 | * none |
| 61 | * |
| 62 | * SIDE EFFECTS: |
| 63 | * |
| 64 | * none |
| 65 | */ |
| 66 | #define cma__int_attr_get_priority(_att_,_setting_) { \ |
| 67 | cma__t_int_attr *_int_att_; \ |
| 68 | (_int_att_) = cma__validate_default_attr (_att_); \ |
| 69 | cma__int_lock ((_int_att_)->mutex); \ |
| 70 | (*(_setting_)) = (_int_att_)->priority; \ |
| 71 | cma__int_unlock ((_int_att_)->mutex); \ |
| 72 | } |
| 73 | |
| 74 | \f |
| 75 | /* |
| 76 | * FUNCTIONAL DESCRIPTION: |
| 77 | * |
| 78 | * cma__int_attr_get_sched - Performs work of cma_attr_get_sched |
| 79 | * |
| 80 | * FORMAL PARAMETERS: |
| 81 | * |
| 82 | * cma_t_attr *_att_ _ Attributes object used |
| 83 | * cma_t_sched_policy *_setting_ - Current setting |
| 84 | * |
| 85 | * IMPLICIT INPUTS: |
| 86 | * |
| 87 | * none |
| 88 | * |
| 89 | * IMPLICIT OUTPUTS: |
| 90 | * |
| 91 | * scheduling policy |
| 92 | * |
| 93 | * FUNCTION VALUE: |
| 94 | * |
| 95 | * none |
| 96 | * |
| 97 | * SIDE EFFECTS: |
| 98 | * |
| 99 | * none |
| 100 | */ |
| 101 | #define cma__int_attr_get_sched(_att_,_setting_) { \ |
| 102 | cma__t_int_attr *_int_att_; \ |
| 103 | (_int_att_) = cma__validate_default_attr (_att_); \ |
| 104 | cma__int_lock ((_int_att_)->mutex); \ |
| 105 | (*(_setting_)) = (_int_att_)->policy; \ |
| 106 | cma__int_unlock ((_int_att_)->mutex); \ |
| 107 | } |
| 108 | |
| 109 | \f |
| 110 | /* |
| 111 | * FUNCTIONAL DESCRIPTION: |
| 112 | * |
| 113 | * cma__int_attr_get_inherit_sched - Performs work of |
| 114 | * cma_attr_get_inherit_sched |
| 115 | * |
| 116 | * FORMAL PARAMETERS: |
| 117 | * |
| 118 | * cma_t_attr *_att_ - Attributes object to use |
| 119 | * cma_t_sched_inherit *_setting_ - Current setting |
| 120 | * |
| 121 | * IMPLICIT INPUTS: |
| 122 | * |
| 123 | * none |
| 124 | * |
| 125 | * IMPLICIT OUTPUTS: |
| 126 | * |
| 127 | * Inheritable scheduling policy |
| 128 | * |
| 129 | * FUNCTION VALUE: |
| 130 | * |
| 131 | * none |
| 132 | * |
| 133 | * SIDE EFFECTS: |
| 134 | * |
| 135 | * none |
| 136 | */ |
| 137 | #define cma__int_attr_get_inherit_sched(_att_,_setting_) { \ |
| 138 | cma__t_int_attr *_int_att_; \ |
| 139 | (_int_att_) = cma__validate_default_attr (_att_); \ |
| 140 | cma__int_lock ((_int_att_)->mutex); \ |
| 141 | (*(_setting_)) \ |
| 142 | = ((_int_att_)->inherit_sched ? cma_c_sched_inherit : cma_c_sched_use_default); \ |
| 143 | cma__int_unlock ((_int_att_)->mutex); \ |
| 144 | } |
| 145 | \f |
| 146 | /* |
| 147 | * FUNCTIONAL DESCRIPTION: |
| 148 | * |
| 149 | * cma__int_attr_set_stacksize - Performs work for cma_attr_set_stacksize |
| 150 | * |
| 151 | * FORMAL PARAMETERS: |
| 152 | * |
| 153 | * cma_t_attr *_att_ - Attributes object to use |
| 154 | * cma_t_natural _setting_ - Setting |
| 155 | * |
| 156 | * IMPLICIT INPUTS: |
| 157 | * |
| 158 | * none |
| 159 | * |
| 160 | * IMPLICIT OUTPUTS: |
| 161 | * |
| 162 | * none |
| 163 | * |
| 164 | * FUNCTION VALUE: |
| 165 | * |
| 166 | * none |
| 167 | * |
| 168 | * SIDE EFFECTS: |
| 169 | * |
| 170 | * Change attribute objects stack size setting |
| 171 | */ |
| 172 | #define cma__int_attr_set_stacksize(_att_,_setting_) { \ |
| 173 | cma__t_int_attr *_int_att_; \ |
| 174 | if ((_setting_) <= 0) \ |
| 175 | cma__error (cma_s_badparam); \ |
| 176 | _int_att_ = cma__validate_attr (_att_); \ |
| 177 | cma__int_lock ((_int_att_)->mutex); \ |
| 178 | _int_att_->stack_size = cma__roundup_chunksize(_setting_); \ |
| 179 | cma__free_cache (_int_att_, cma__c_obj_tcb); \ |
| 180 | _int_att_->cache[cma__c_obj_tcb].revision++; \ |
| 181 | _int_att_->cache[cma__c_obj_stack].revision++; \ |
| 182 | cma__int_unlock (_int_att_->mutex); \ |
| 183 | } |
| 184 | \f |
| 185 | /* |
| 186 | * FUNCTIONAL DESCRIPTION: |
| 187 | * |
| 188 | * cma__int_attr_get_stacksize - Performs work of cma_attr_get_stacksize |
| 189 | * |
| 190 | * FORMAL PARAMETERS: |
| 191 | * |
| 192 | * cma_t_attr *_att_ - Attributes object to use |
| 193 | * cma_t_natural *_setting_ - Current setting |
| 194 | * |
| 195 | * IMPLICIT INPUTS: |
| 196 | * |
| 197 | * none |
| 198 | * |
| 199 | * IMPLICIT OUTPUTS: |
| 200 | * |
| 201 | * Attribute objects stack size setting |
| 202 | * |
| 203 | * FUNCTION VALUE: |
| 204 | * |
| 205 | * none |
| 206 | * |
| 207 | * SIDE EFFECTS: |
| 208 | * |
| 209 | * none |
| 210 | */ |
| 211 | #define cma__int_attr_get_stacksize(_att_,_setting_) { \ |
| 212 | cma__t_int_attr *_int_att_; \ |
| 213 | (_int_att_) = cma__validate_default_attr (_att_); \ |
| 214 | cma__int_lock ((_int_att_)->mutex); \ |
| 215 | (*(_setting_)) = (_int_att_)->stack_size; \ |
| 216 | cma__int_unlock ((_int_att_)->mutex); \ |
| 217 | } |
| 218 | |
| 219 | \f |
| 220 | /* |
| 221 | * FUNCTIONAL DESCRIPTION: |
| 222 | * |
| 223 | * cma__int_attr_set_guardsize - Performs work for cma_attr_set_guardsize |
| 224 | * |
| 225 | * FORMAL PARAMETERS: |
| 226 | * |
| 227 | * cma_t_attr *_att_ - Attributes object to use |
| 228 | * cma_t_natural _setting_ - Setting |
| 229 | * |
| 230 | * IMPLICIT INPUTS: |
| 231 | * |
| 232 | * none |
| 233 | * |
| 234 | * IMPLICIT OUTPUTS: |
| 235 | * |
| 236 | * none |
| 237 | * |
| 238 | * FUNCTION VALUE: |
| 239 | * |
| 240 | * none |
| 241 | * |
| 242 | * SIDE EFFECTS: |
| 243 | * |
| 244 | * Change attribute objects guard size setting |
| 245 | */ |
| 246 | #define cma__int_attr_set_guardsize(_att_,_setting_) { \ |
| 247 | cma__t_int_attr *_int_att_; \ |
| 248 | _int_att_ = cma__validate_attr (_att_); \ |
| 249 | cma__int_lock ((_int_att_)->mutex); \ |
| 250 | _int_att_->guard_size = cma__roundup_chunksize(_setting_); \ |
| 251 | cma__free_cache (_int_att_, cma__c_obj_tcb); \ |
| 252 | _int_att_->cache[cma__c_obj_tcb].revision++; \ |
| 253 | _int_att_->cache[cma__c_obj_stack].revision++; \ |
| 254 | cma__int_unlock (_int_att_->mutex); \ |
| 255 | } |
| 256 | \f |
| 257 | /* |
| 258 | * FUNCTIONAL DESCRIPTION: |
| 259 | * |
| 260 | * cma__int_attr_get_guardsize - Performs work of cma_attr_get_guardsize |
| 261 | * |
| 262 | * FORMAL PARAMETERS: |
| 263 | * |
| 264 | * cma_t_attr *_att_ - Attributes object to use |
| 265 | * cma_t_natural *_setting_ - Current setting |
| 266 | * |
| 267 | * IMPLICIT INPUTS: |
| 268 | * |
| 269 | * none |
| 270 | * |
| 271 | * IMPLICIT OUTPUTS: |
| 272 | * |
| 273 | * Attribute objects guard size setting |
| 274 | * |
| 275 | * FUNCTION VALUE: |
| 276 | * |
| 277 | * none |
| 278 | * |
| 279 | * SIDE EFFECTS: |
| 280 | * |
| 281 | * none |
| 282 | */ |
| 283 | #define cma__int_attr_get_guardsize(_att_,_setting_) { \ |
| 284 | cma__t_int_attr *_int_att_; \ |
| 285 | (_int_att_) = cma__validate_default_attr (_att_); \ |
| 286 | cma__int_lock ((_int_att_)->mutex); \ |
| 287 | (*(_setting_)) = (_int_att_)->guard_size; \ |
| 288 | cma__int_unlock ((_int_att_)->mutex); \ |
| 289 | } |
| 290 | |
| 291 | /* |
| 292 | * TYPEDEFS |
| 293 | */ |
| 294 | #ifndef __STDC__ |
| 295 | struct CMA__T_INT_MUTEX; /* Avoid circular dependency */ |
| 296 | #endif |
| 297 | |
| 298 | typedef struct CMA__T_CACHE { |
| 299 | cma_t_natural revision; /* Revisions */ |
| 300 | cma_t_natural count; |
| 301 | cma__t_queue queue; /* Cache headers */ |
| 302 | } cma__t_cache; |
| 303 | |
| 304 | typedef struct CMA__T_INT_ATTR { |
| 305 | cma__t_object header; /* Common header */ |
| 306 | struct CMA__T_INT_ATTR *attributes; /* Point to controlling attr */ |
| 307 | struct CMA__T_INT_MUTEX *mutex; /* Serialize access to object */ |
| 308 | cma_t_priority priority; /* Priority of new thread */ |
| 309 | cma_t_sched_policy policy; /* Sched policy of thread */ |
| 310 | cma_t_boolean inherit_sched; /* Is scheduling inherited? */ |
| 311 | cma_t_natural stack_size; /* Size of stack (bytes) */ |
| 312 | cma_t_natural guard_size; /* Size of guard (bytes) */ |
| 313 | cma_t_mutex_kind mutex_kind; /* Mutex kind */ |
| 314 | cma__t_cache cache[cma__c_obj_num]; /* Cache information */ |
| 315 | cma_t_boolean delete_pending; /* attr. obj. is deleted */ |
| 316 | cma_t_natural refcnt; /* Number of objects using attr. obj */ |
| 317 | } cma__t_int_attr; |
| 318 | |
| 319 | /* |
| 320 | * GLOBAL DATA |
| 321 | */ |
| 322 | |
| 323 | extern cma__t_int_attr cma__g_def_attr; |
| 324 | |
| 325 | /* |
| 326 | * INTERNAL INTERFACES |
| 327 | */ |
| 328 | |
| 329 | extern void cma__destroy_attributes (cma__t_int_attr *); |
| 330 | |
| 331 | extern void cma__free_attributes (cma__t_int_attr *); |
| 332 | |
| 333 | extern void cma__free_cache (cma__t_int_attr *,cma_t_natural ); |
| 334 | |
| 335 | extern cma__t_int_attr *cma__get_attributes (cma__t_int_attr *); |
| 336 | |
| 337 | extern void cma__init_attr (void); |
| 338 | |
| 339 | extern void cma__reinit_attr (cma_t_integer); |
| 340 | |
| 341 | #endif |