Mercurial > nand-ecoscentric
annotate packages/kernel/current/src/common/kapi.cxx @ 115:6ed91473a1cd ecos-sw-2000-08-21
Merge from eCos master repository on 2000-08-21-22:40:54-BST
| author | jlarmour |
|---|---|
| date | Fri, 25 Aug 2000 17:32:38 +0000 |
| parents | 5a0cc6c243a9 |
| children | d397fc472bcf |
| rev | line source |
|---|---|
| 0 | 1 //========================================================================== |
| 2 // | |
| 2 | 3 // common/kapi.cxx |
| 0 | 4 // |
| 2 | 5 // C API Implementation |
| 0 | 6 // |
| 7 //========================================================================== | |
| 8 //####COPYRIGHTBEGIN#### | |
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9 // |
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10 // ------------------------------------------- |
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11 // The contents of this file are subject to the Red Hat eCos Public License |
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12 // Version 1.1 (the "License"); you may not use this file except in |
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13 // compliance with the License. You may obtain a copy of the License at |
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14 // http://www.redhat.com/ |
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15 // |
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16 // Software distributed under the License is distributed on an "AS IS" |
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
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18 // License for the specific language governing rights and limitations under |
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19 // the License. |
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20 // |
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21 // The Original Code is eCos - Embedded Configurable Operating System, |
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22 // released September 30, 1998. |
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23 // |
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24 // The Initial Developer of the Original Code is Red Hat. |
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25 // Portions created by Red Hat are |
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc. |
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27 // All Rights Reserved. |
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28 // ------------------------------------------- |
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29 // |
| 0 | 30 //####COPYRIGHTEND#### |
| 31 //========================================================================== | |
| 32 //#####DESCRIPTIONBEGIN#### | |
| 33 // | |
| 2 | 34 // Author(s): nickg, dsm |
| 35 // Contributors: nickg | |
| 36 // Date: 1998-03-02 | |
| 37 // Purpose: C API Implementation | |
| 38 // Description: C++ implementation of the C API | |
| 0 | 39 // |
| 40 // | |
| 41 //####DESCRIPTIONEND#### | |
| 42 // | |
| 43 //========================================================================== | |
| 44 | |
| 45 #include <pkgconf/kernel.h> | |
| 46 | |
| 47 #ifdef CYGFUN_KERNEL_API_C | |
| 48 | |
| 49 #include <cyg/kernel/ktypes.h> // base kernel types | |
| 50 #include <cyg/infra/cyg_trac.h> // tracing macros | |
| 51 #include <cyg/infra/cyg_ass.h> // assertion macros | |
| 52 #include <cyg/kernel/instrmnt.h> // instrumentation | |
| 53 #include <cyg/kernel/diag.h> | |
| 54 | |
| 55 #include <cyg/kernel/thread.hxx> | |
| 56 #include <cyg/kernel/thread.inl> // thread inlines | |
| 57 #include <cyg/kernel/sched.hxx> | |
| 58 #include <cyg/kernel/intr.hxx> | |
| 59 #include <cyg/kernel/clock.hxx> | |
| 60 | |
| 61 #include <cyg/kernel/sema.hxx> | |
| 62 #include <cyg/kernel/flag.hxx> | |
| 63 #include <cyg/kernel/mutex.hxx> | |
| 64 #include <cyg/kernel/mbox.hxx> | |
| 65 | |
| 66 #include <cyg/kernel/sched.inl> // scheduler inlines | |
| 67 #include <cyg/kernel/clock.inl> // clock inlines | |
| 68 | |
| 69 #include <cyg/kernel/kapi.h> // C API | |
| 70 | |
| 71 // ------------------------------------------------------------------------- | |
| 72 // Magic new function | |
| 73 | |
| 74 inline void *operator new(size_t size, void *ptr) | |
| 75 { | |
| 76 CYG_CHECK_DATA_PTR( ptr, "Bad pointer" ); | |
| 77 return ptr; | |
| 78 } | |
| 79 | |
| 80 // ------------------------------------------------------------------------- | |
| 81 | |
| 82 #ifdef CYGDBG_USE_ASSERTS | |
| 83 | |
| 84 #define CYG_ASSERT_SIZES(cstruct, cxxstruct) \ | |
| 85 CYG_MACRO_START \ | |
| 86 char *msg = "Size of C struct " #cstruct \ | |
| 87 " != size of C++ struct " #cxxstruct ; \ | |
| 88 CYG_ASSERT( sizeof(cstruct) == sizeof(cxxstruct) , msg ); \ | |
| 89 CYG_MACRO_END | |
| 90 | |
| 91 #else | |
| 92 | |
| 93 #define CYG_ASSERT_SIZES(cstruct, cxxstruct) | |
| 94 | |
| 95 #endif | |
| 96 | |
| 97 /*---------------------------------------------------------------------------*/ | |
| 98 /* Scheduler operations */ | |
| 99 | |
| 100 /* Starts scheduler with created threads. Never returns. */ | |
| 101 externC void cyg_scheduler_start(void) | |
| 102 { | |
| 103 Cyg_Scheduler::start(); | |
| 104 } | |
| 105 | |
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106 /* Lock the scheduler. */ |
| 0 | 107 externC void cyg_scheduler_lock(void) |
| 108 { | |
| 109 Cyg_Scheduler::lock(); | |
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110 // get_sched_lock() is unsigned, see below "cyg_ucount32 lock" |
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111 CYG_ASSERT( (0xff000000 & (Cyg_Scheduler::get_sched_lock())) == 0, |
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112 "Scheduler overlocked" ); |
| 0 | 113 } |
| 114 | |
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115 /* Lock the scheduler, but never more than level=1. */ |
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116 externC void cyg_scheduler_safe_lock(void) |
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117 { |
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118 Cyg_Scheduler::lock(); |
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119 cyg_ucount32 slock = Cyg_Scheduler::get_sched_lock(); |
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120 if (slock > 1) |
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121 Cyg_Scheduler::unlock(); |
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122 // get_sched_lock() is unsigned, see below "cyg_ucount32 lock" |
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123 CYG_ASSERT( (0xff000000 & (Cyg_Scheduler::get_sched_lock())) == 0, |
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124 "Scheduler overlocked" ); |
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125 } |
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126 |
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127 /* Unlock the scheduler. */ |
| 0 | 128 externC void cyg_scheduler_unlock(void) |
| 129 { | |
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130 cyg_ucount32 slock = Cyg_Scheduler::get_sched_lock(); |
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131 CYG_ASSERT( 0 < slock, "Scheduler not locked" ); |
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132 // And program defensively too: |
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133 if ( 0 < slock ) |
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134 Cyg_Scheduler::unlock(); |
| 0 | 135 } |
| 136 | |
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137 /* Read the scheduler lock value. */ |
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138 externC cyg_ucount32 cyg_scheduler_read_lock(void) |
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139 { |
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140 cyg_ucount32 slock = Cyg_Scheduler::get_sched_lock(); |
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141 return slock; |
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142 } |
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143 |
| 0 | 144 /*---------------------------------------------------------------------------*/ |
| 145 /* Thread operations */ | |
| 146 | |
| 147 externC void cyg_thread_create( | |
| 2 | 148 cyg_addrword_t sched_info, /* scheduling info (eg pri) */ |
| 0 | 149 cyg_thread_entry_t *entry, /* entry point function */ |
| 2 | 150 cyg_addrword_t entry_data, /* entry data */ |
| 0 | 151 char *name, /* optional thread name */ |
| 152 void *stack_base, /* stack base, NULL = alloc */ | |
| 153 cyg_ucount32 stack_size, /* stack size, 0 = default */ | |
| 154 cyg_handle_t *handle, /* returned thread handle */ | |
| 155 cyg_thread *thread /* put thread here */ | |
| 156 ) | |
| 157 { | |
| 158 CYG_ASSERT_SIZES( cyg_thread, Cyg_Thread ); | |
| 159 | |
| 160 Cyg_Thread *t = new((void *)thread) Cyg_Thread ( | |
| 161 (CYG_ADDRWORD) sched_info, | |
| 162 (cyg_thread_entry *)entry, | |
| 163 (CYG_ADDRWORD) entry_data, | |
| 164 name, | |
| 2 | 165 (CYG_ADDRWORD) stack_base, |
| 166 stack_size | |
| 0 | 167 ); |
| 168 t=t; | |
| 169 | |
| 170 CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" ); | |
| 171 *handle = (cyg_handle_t)thread; | |
| 172 } | |
| 173 | |
| 174 externC void cyg_thread_exit() | |
| 175 { | |
| 176 Cyg_Thread::exit(); | |
| 177 } | |
| 178 | |
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179 externC cyg_bool_t cyg_thread_delete( cyg_handle_t thread ) |
| 2 | 180 { |
| 181 Cyg_Thread *th = (Cyg_Thread *)thread; | |
| 182 if( th->get_state() != Cyg_Thread::EXITED ) | |
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183 th->kill(); // encourage it to terminate |
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184 if( th->get_state() != Cyg_Thread::EXITED ) |
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185 return false; // it didn't run yet, leave it up to the app to fix |
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186 th->~Cyg_Thread(); |
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187 return true; |
| 2 | 188 } |
| 189 | |
| 0 | 190 externC void cyg_thread_suspend(cyg_handle_t thread) |
| 191 { | |
| 192 ((Cyg_Thread *)thread)->suspend(); | |
| 193 } | |
| 194 | |
| 195 externC void cyg_thread_resume(cyg_handle_t thread) | |
| 196 { | |
| 197 Cyg_Thread *th = (Cyg_Thread *)thread; | |
| 198 | |
| 199 // If we are resuming an exited thread then | |
| 200 // reinitialize it. | |
| 201 | |
| 202 if( th->get_state() == Cyg_Thread::EXITED ) | |
| 203 th->reinitialize(); | |
| 204 | |
| 205 th->resume(); | |
| 206 } | |
| 207 | |
| 208 externC void cyg_thread_kill( cyg_handle_t thread) | |
| 209 { | |
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210 ((Cyg_Thread *)thread)->kill(); |
| 0 | 211 } |
| 212 | |
| 2 | 213 externC void cyg_thread_release( cyg_handle_t thread) |
| 214 { | |
| 215 ((Cyg_Thread *)thread)->release(); | |
| 216 } | |
| 217 | |
| 0 | 218 externC void cyg_thread_yield() |
| 219 { | |
| 220 Cyg_Thread::yield(); | |
| 221 } | |
| 222 | |
| 223 externC cyg_handle_t cyg_thread_self() | |
| 224 { | |
| 225 return (cyg_handle_t)Cyg_Thread::self(); | |
| 226 } | |
| 227 | |
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228 // idle thread is not really a plain CygThread; danger. |
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229 externC cyg_handle_t cyg_thread_idle_thread() |
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230 { |
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231 extern Cyg_Thread idle_thread; |
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232 return (cyg_handle_t)&idle_thread; |
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233 } |
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234 |
| 0 | 235 /* Priority manipulation */ |
| 236 externC void cyg_thread_set_priority( | |
| 237 cyg_handle_t thread, cyg_priority_t priority ) | |
| 238 { | |
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239 #ifdef CYGIMP_THREAD_PRIORITY |
| 0 | 240 ((Cyg_Thread *)thread)->set_priority(priority); |
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241 #endif |
| 0 | 242 } |
| 243 | |
| 244 externC cyg_priority_t cyg_thread_get_priority(cyg_handle_t thread) | |
| 245 { | |
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246 #ifdef CYGIMP_THREAD_PRIORITY |
| 0 | 247 return ((Cyg_Thread *)thread)->get_priority(); |
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248 #else |
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249 return 0; |
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250 #endif |
| 0 | 251 } |
| 252 | |
| 253 /* Deadline scheduling control (optional) */ | |
| 254 | |
| 255 externC void cyg_thread_deadline_wait( | |
| 256 cyg_tick_count_t start_time, /* abs earliest start time */ | |
| 257 cyg_tick_count_t run_time, /* worst case execution time */ | |
| 258 cyg_tick_count_t deadline /* absolute deadline */ | |
| 259 ) | |
| 260 { | |
| 261 CYG_ASSERT(0,"Not implemented"); | |
| 262 } | |
| 263 | |
| 264 externC void cyg_thread_delay(cyg_tick_count_t delay) | |
| 265 { | |
| 266 Cyg_Thread::self()->delay(delay); | |
| 267 } | |
| 268 | |
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269 /* Stack information */ |
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270 externC cyg_addrword_t cyg_thread_get_stack_base(cyg_handle_t thread) |
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271 { |
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272 return ((Cyg_Thread *)thread)->get_stack_base(); |
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273 } |
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274 |
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275 externC cyg_uint32 cyg_thread_get_stack_size(cyg_handle_t thread) |
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276 { |
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277 return ((Cyg_Thread *)thread)->get_stack_size(); |
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278 } |
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279 |
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280 |
| 2 | 281 /*---------------------------------------------------------------------------*/ |
| 282 /* Per-thread data */ | |
| 283 | |
| 284 #ifdef CYGVAR_KERNEL_THREADS_DATA | |
| 285 | |
| 286 externC cyg_ucount32 cyg_thread_new_data_index() | |
| 287 { | |
| 288 return Cyg_Thread::new_data_index(); | |
| 289 } | |
| 290 | |
| 291 externC void cyg_thread_free_data_index(cyg_ucount32 index) | |
| 292 { | |
| 293 Cyg_Thread::free_data_index(index); | |
| 294 } | |
| 295 | |
| 296 externC CYG_ADDRWORD cyg_thread_get_data(cyg_ucount32 index) | |
| 297 { | |
| 298 return Cyg_Thread::get_data(index); | |
| 299 } | |
| 300 | |
| 301 externC CYG_ADDRWORD *cyg_thread_get_data_ptr(cyg_ucount32 index) | |
| 302 { | |
| 303 return Cyg_Thread::get_data_ptr(index); | |
| 304 } | |
| 305 | |
| 306 externC void cyg_thread_set_data(cyg_ucount32 index, CYG_ADDRWORD | |
| 307 data) | |
| 308 { | |
| 309 Cyg_Thread::self()->set_data(index, data); | |
| 310 } | |
| 311 #endif | |
| 0 | 312 |
| 313 /*---------------------------------------------------------------------------*/ | |
| 314 /* Exception handling. */ | |
| 315 | |
| 316 #ifdef CYGPKG_KERNEL_EXCEPTIONS | |
| 317 externC void cyg_exception_set_handler( | |
| 318 cyg_code_t exception_number, | |
| 319 cyg_exception_handler_t *new_handler, | |
| 2 | 320 cyg_addrword_t new_data, |
| 0 | 321 cyg_exception_handler_t **old_handler, |
| 2 | 322 cyg_addrword_t *old_data |
| 0 | 323 ) |
| 324 { | |
| 325 Cyg_Thread::register_exception( | |
| 326 exception_number, | |
| 327 (cyg_exception_handler *)new_handler, | |
| 328 (CYG_ADDRWORD)new_data, | |
| 329 (cyg_exception_handler **)old_handler, | |
| 330 (CYG_ADDRWORD *)old_data | |
| 331 ); | |
| 332 } | |
| 333 | |
| 334 /* Clear exception handler to default */ | |
| 335 externC void cyg_exception_clear_handler( | |
| 336 cyg_code_t exception_number | |
| 337 ) | |
| 338 { | |
| 339 Cyg_Thread::deregister_exception( exception_number ); | |
| 340 } | |
| 341 | |
| 342 /* Invoke exception handler */ | |
| 343 externC void cyg_exception_call_handler( | |
| 344 cyg_handle_t thread, | |
| 345 cyg_code_t exception_number, | |
| 2 | 346 cyg_addrword_t error_code |
| 0 | 347 ) |
| 348 { | |
| 349 Cyg_Thread *t = (Cyg_Thread *)thread; | |
| 350 | |
| 351 t->deliver_exception( exception_number, error_code ); | |
| 352 } | |
| 353 #endif | |
| 354 | |
| 355 /*---------------------------------------------------------------------------*/ | |
| 356 /* Interrupt handling */ | |
| 357 | |
| 358 externC void cyg_interrupt_create( | |
| 359 cyg_vector_t vector, /* Vector to attach to */ | |
| 360 cyg_priority_t priority, /* Queue priority */ | |
| 2 | 361 cyg_addrword_t data, /* Data pointer */ |
| 0 | 362 cyg_ISR_t *isr, /* Interrupt Service Routine */ |
| 363 cyg_DSR_t *dsr, /* Deferred Service Routine */ | |
| 364 cyg_handle_t *handle, /* returned handle */ | |
| 365 cyg_interrupt *intr /* put interrupt here */ | |
| 366 ) | |
| 367 { | |
| 368 CYG_ASSERT_SIZES( cyg_interrupt, Cyg_Interrupt ); | |
| 369 | |
| 370 Cyg_Interrupt *t = new((void *)intr) Cyg_Interrupt ( | |
| 371 (cyg_vector)vector, | |
| 372 (cyg_priority)priority, | |
| 373 (CYG_ADDRWORD)data, | |
| 374 (cyg_ISR *)isr, | |
| 375 (cyg_DSR *)dsr ); | |
| 376 t=t; | |
| 377 | |
| 378 CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" ); | |
| 379 *handle = (cyg_handle_t)intr; | |
| 380 } | |
| 381 | |
| 382 externC void cyg_interrupt_delete( cyg_handle_t interrupt) | |
| 383 { | |
| 384 ((Cyg_Interrupt *)interrupt)->~Cyg_Interrupt(); | |
| 385 } | |
| 386 | |
| 387 void cyg_interrupt_attach( cyg_handle_t interrupt ) | |
| 388 { | |
| 389 ((Cyg_Interrupt *)interrupt)->attach(); | |
| 390 } | |
| 391 | |
| 392 void cyg_interrupt_detach( cyg_handle_t interrupt ) | |
| 393 { | |
| 394 ((Cyg_Interrupt *)interrupt)->detach(); | |
| 395 } | |
| 396 | |
| 397 /* VSR manipulation */ | |
| 398 | |
| 399 externC void cyg_interrupt_get_vsr( | |
| 400 cyg_vector_t vector, /* vector to get */ | |
| 401 cyg_VSR_t **vsr /* vsr got */ | |
| 402 ) | |
| 403 { | |
| 404 Cyg_Interrupt::get_vsr( (cyg_vector)vector, (cyg_VSR **)vsr); | |
| 405 } | |
| 406 | |
| 407 externC void cyg_interrupt_set_vsr( | |
| 408 cyg_vector_t vector, /* vector to set */ | |
| 409 cyg_VSR_t *vsr /* vsr to set */ | |
| 410 ) | |
| 411 { | |
| 412 Cyg_Interrupt::set_vsr( (cyg_vector)vector, (cyg_VSR *)vsr); | |
| 413 } | |
| 414 | |
| 415 /* CPU level interrupt mask */ | |
| 416 externC void cyg_interrupt_disable() | |
| 417 { | |
| 418 Cyg_Interrupt::disable_interrupts(); | |
| 419 } | |
| 420 | |
| 421 externC void cyg_interrupt_enable() | |
| 422 { | |
| 423 Cyg_Interrupt::enable_interrupts(); | |
| 424 } | |
| 425 | |
| 426 /* Interrupt controller access */ | |
| 427 externC void cyg_interrupt_mask(cyg_vector_t vector) | |
| 428 { | |
| 429 Cyg_Interrupt::mask_interrupt( (cyg_vector)vector); | |
| 430 } | |
| 431 | |
| 432 externC void cyg_interrupt_unmask(cyg_vector_t vector) | |
| 433 { | |
| 434 Cyg_Interrupt::unmask_interrupt( (cyg_vector)vector); | |
| 435 } | |
| 436 | |
| 437 | |
| 438 externC void cyg_interrupt_acknowledge(cyg_vector_t vector) | |
| 439 { | |
| 440 Cyg_Interrupt::acknowledge_interrupt( (cyg_vector)vector); | |
| 441 } | |
| 442 | |
| 443 | |
| 444 externC void cyg_interrupt_configure( | |
| 445 cyg_vector_t vector, /* vector to configure */ | |
| 446 cyg_bool_t level, /* level or edge triggered */ | |
| 447 cyg_bool_t up /* rising/faling edge, high/low level*/ | |
| 448 ) | |
| 449 { | |
| 450 Cyg_Interrupt::configure_interrupt( (cyg_vector)vector, level, up ); | |
| 451 } | |
| 452 | |
| 453 | |
| 454 /*---------------------------------------------------------------------------*/ | |
| 455 /* Counters, Clocks and Alarms */ | |
| 456 | |
| 457 externC void cyg_counter_create( | |
| 458 cyg_handle_t *handle, /* returned counter handle */ | |
| 459 cyg_counter *counter /* put counter here */ | |
| 460 ) | |
| 461 { | |
| 462 CYG_ASSERT_SIZES( cyg_counter, Cyg_Counter ); | |
| 463 | |
| 464 Cyg_Counter *t = new((void *)counter) Cyg_Counter (); | |
| 465 t=t; | |
| 466 | |
| 467 CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" ); | |
| 468 *handle = (cyg_handle_t)counter; | |
| 469 } | |
| 470 | |
| 471 externC void cyg_counter_delete(cyg_handle_t counter) | |
| 472 { | |
| 473 ((Cyg_Counter *)counter)->~Cyg_Counter(); | |
| 474 } | |
| 475 | |
| 476 /* Return current value of counter */ | |
| 477 externC cyg_tick_count_t cyg_counter_current_value(cyg_handle_t counter) | |
| 478 { | |
| 479 return ((Cyg_Counter *)counter)->current_value(); | |
| 480 } | |
| 481 | |
| 482 /* Set new current value */ | |
| 483 externC void cyg_counter_set_value( | |
| 484 cyg_handle_t counter, | |
| 485 cyg_tick_count_t new_value | |
| 486 ) | |
| 487 { | |
| 488 ((Cyg_Counter *)counter)->set_value( new_value ); | |
| 489 } | |
| 490 | |
| 491 /* Advance counter by one tick */ | |
| 492 externC void cyg_counter_tick(cyg_handle_t counter) | |
| 493 { | |
| 494 ((Cyg_Counter *)counter)->tick(); | |
| 495 } | |
| 496 | |
| 497 /* Create a clock object */ | |
| 498 externC void cyg_clock_create( | |
| 499 cyg_resolution_t resolution, /* Initial resolution */ | |
| 500 cyg_handle_t *handle, /* Returned clock handle */ | |
| 501 cyg_clock *clock /* put clock here */ | |
| 502 ) | |
| 503 { | |
| 504 CYG_ASSERT_SIZES( cyg_clock, Cyg_Clock ); | |
| 505 | |
| 506 Cyg_Clock::cyg_resolution res; | |
| 507 | |
| 508 res.dividend = resolution.dividend; | |
| 509 res.divisor = resolution.divisor; | |
| 510 | |
| 511 Cyg_Clock *t = new((void *)clock) Cyg_Clock ( res ); | |
| 512 t=t; | |
| 513 | |
| 514 CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" ); | |
| 515 *handle = (cyg_handle_t)clock; | |
| 516 } | |
| 517 | |
| 518 externC void cyg_clock_delete(cyg_handle_t clock) | |
| 519 { | |
| 520 ((Cyg_Clock *)clock)->~Cyg_Clock(); | |
| 521 } | |
| 522 | |
| 523 /* convert a clock handle to a counter handle so we can use the */ | |
| 524 /* counter API on it. */ | |
| 525 externC void cyg_clock_to_counter( | |
| 526 cyg_handle_t clock, | |
| 527 cyg_handle_t *counter | |
| 528 ) | |
| 529 { | |
| 530 CYG_CHECK_DATA_PTR( counter, "Bad counter handle pointer" ); | |
| 531 *counter = (cyg_handle_t)(Cyg_Counter *)clock; | |
| 532 } | |
| 533 | |
| 534 externC void cyg_clock_set_resolution( | |
| 535 cyg_handle_t clock, | |
| 536 cyg_resolution_t resolution /* New resolution */ | |
| 537 ) | |
| 538 { | |
| 539 Cyg_Clock::cyg_resolution res; | |
| 540 | |
| 541 res.dividend = resolution.dividend; | |
| 542 res.divisor = resolution.divisor; | |
| 543 | |
| 544 ((Cyg_Clock *)clock)->set_resolution( res ); | |
| 545 } | |
| 546 | |
| 547 externC cyg_resolution_t cyg_clock_get_resolution(cyg_handle_t clock) | |
| 548 { | |
| 549 Cyg_Clock::cyg_resolution res = | |
| 550 ((Cyg_Clock *)clock)->get_resolution(); | |
| 551 | |
| 552 cyg_resolution_t resolution; | |
| 553 | |
| 554 resolution.dividend = res.dividend; | |
| 555 resolution.divisor = res.divisor; | |
| 556 | |
| 557 return resolution; | |
| 558 } | |
| 559 | |
| 560 #ifdef CYGVAR_KERNEL_COUNTERS_CLOCK | |
| 561 externC cyg_handle_t cyg_real_time_clock(void) | |
| 562 { | |
| 563 return (cyg_handle_t)Cyg_Clock::real_time_clock; | |
| 564 } | |
| 565 | |
| 566 externC cyg_tick_count_t cyg_current_time(void) | |
| 567 { | |
| 568 return Cyg_Clock::real_time_clock->current_value(); | |
| 569 } | |
| 570 #endif | |
| 571 | |
| 572 externC void cyg_alarm_create( | |
| 573 cyg_handle_t counter, /* Attached to this counter */ | |
| 574 cyg_alarm_t *alarmfn, /* Call-back function */ | |
| 2 | 575 cyg_addrword_t data, /* Call-back data */ |
| 0 | 576 cyg_handle_t *handle, /* Returned alarm object */ |
| 577 cyg_alarm *alarm /* put alarm here */ | |
| 578 ) | |
| 579 { | |
| 580 CYG_ASSERT_SIZES( cyg_alarm, Cyg_Alarm ); | |
| 581 | |
| 582 Cyg_Alarm *t = new((void *)alarm) Cyg_Alarm ( | |
| 583 (Cyg_Counter *)counter, | |
| 2 | 584 (cyg_alarm_fn *)alarmfn, |
| 585 (CYG_ADDRWORD)data | |
| 0 | 586 ); |
| 587 t=t; | |
| 588 | |
| 589 CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" ); | |
| 590 *handle = (cyg_handle_t)alarm; | |
| 591 } | |
| 592 | |
| 593 /* Disable alarm, detach from counter and invalidate handles */ | |
| 594 externC void cyg_alarm_delete( cyg_handle_t alarm) | |
| 595 { | |
| 596 ((Cyg_Alarm *)alarm)->~Cyg_Alarm(); | |
| 597 } | |
| 598 | |
| 599 externC void cyg_alarm_initialize( | |
| 600 cyg_handle_t alarm, | |
| 601 cyg_tick_count_t trigger, /* Absolute trigger time */ | |
| 602 cyg_tick_count_t interval /* Relative retrigger interval */ | |
| 603 ) | |
| 604 { | |
| 605 ((Cyg_Alarm *)alarm)->initialize( | |
| 2 | 606 (cyg_tick_count)trigger, |
| 607 (cyg_tick_count)interval); | |
| 0 | 608 } |
| 609 | |
| 610 externC void cyg_alarm_enable( cyg_handle_t alarm ) | |
| 611 { | |
| 612 ((Cyg_Alarm *)alarm)->enable(); | |
| 613 } | |
| 614 | |
| 615 externC void cyg_alarm_disable( cyg_handle_t alarm ) | |
| 616 { | |
| 617 ((Cyg_Alarm *)alarm)->disable(); | |
| 618 } | |
| 619 | |
| 620 /*---------------------------------------------------------------------------*/ | |
| 621 /* Mail boxes */ | |
| 622 | |
| 623 externC void cyg_mbox_create( | |
| 624 cyg_handle_t *handle, | |
| 625 cyg_mbox *mbox | |
| 626 ) | |
| 627 { | |
| 628 CYG_ASSERT_SIZES( cyg_mbox, Cyg_Mbox ); | |
| 629 | |
| 630 Cyg_Mbox *t = new((void *)mbox) Cyg_Mbox(); | |
| 631 t=t; | |
| 632 | |
| 633 CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" ); | |
| 634 *handle = (cyg_handle_t)mbox; | |
| 635 } | |
| 636 | |
| 637 externC void cyg_mbox_delete(cyg_handle_t mbox) | |
| 638 { | |
| 639 ((Cyg_Mbox *)mbox)->~Cyg_Mbox(); | |
| 640 } | |
| 641 | |
| 642 externC void *cyg_mbox_get(cyg_handle_t mbox) | |
| 643 { | |
| 644 return ((Cyg_Mbox *)mbox)->get(); | |
| 645 } | |
| 646 | |
| 647 #ifdef CYGFUN_KERNEL_THREADS_TIMER | |
| 648 void *cyg_mbox_timed_get( | |
| 649 cyg_handle_t mbox, | |
| 650 cyg_tick_count_t abstime | |
| 651 ) | |
| 652 { | |
| 653 return ((Cyg_Mbox *)mbox)->get(abstime); | |
| 654 } | |
| 655 #endif | |
| 656 | |
| 657 externC void *cyg_mbox_tryget(cyg_handle_t mbox) | |
| 658 { | |
| 659 return ((Cyg_Mbox *)mbox)->tryget(); | |
| 660 } | |
| 661 | |
| 662 externC void *cyg_mbox_peek_item(cyg_handle_t mbox) | |
| 663 { | |
| 664 return ((Cyg_Mbox *)mbox)->peek_item(); | |
| 665 } | |
| 666 | |
| 667 #ifdef CYGMFN_KERNEL_SYNCH_MBOXT_PUT_CAN_WAIT | |
| 668 externC cyg_bool_t cyg_mbox_put(cyg_handle_t mbox, void *item) | |
| 669 { | |
| 670 return ((Cyg_Mbox *)mbox)->put(item); | |
| 671 } | |
| 672 | |
| 673 #ifdef CYGFUN_KERNEL_THREADS_TIMER | |
| 674 externC cyg_bool_t cyg_mbox_timed_put( | |
| 675 cyg_handle_t mbox, | |
| 676 void *item, | |
| 677 cyg_tick_count_t abstime | |
| 678 ) | |
| 679 { | |
| 680 return ((Cyg_Mbox *)mbox)->put(item, abstime); | |
| 681 } | |
| 682 #endif | |
| 683 #endif | |
| 684 | |
| 685 externC cyg_bool_t cyg_mbox_tryput(cyg_handle_t mbox, void *item) | |
| 686 { | |
| 687 return ((Cyg_Mbox *)mbox)->tryput(item); | |
| 688 } | |
| 689 | |
| 690 externC cyg_count32 cyg_mbox_peek(cyg_handle_t mbox) | |
| 691 { | |
| 692 return ((Cyg_Mbox *)mbox)->peek(); | |
| 693 } | |
| 694 | |
| 695 externC cyg_bool_t cyg_mbox_waiting_to_get(cyg_handle_t mbox) | |
| 696 { | |
| 697 return ((Cyg_Mbox *)mbox)->waiting_to_get(); | |
| 698 } | |
| 699 | |
| 700 externC cyg_bool_t cyg_mbox_waiting_to_put(cyg_handle_t mbox) | |
| 701 { | |
| 702 return ((Cyg_Mbox *)mbox)->waiting_to_put(); | |
| 703 } | |
| 704 | |
| 705 | |
| 706 /*---------------------------------------------------------------------------*/ | |
| 707 /* Semaphores */ | |
| 708 | |
| 709 externC void cyg_semaphore_init( | |
| 710 cyg_sem_t *sem, /* Semaphore to init */ | |
| 2 | 711 cyg_count32 val /* Initial semaphore value */ |
| 0 | 712 ) |
| 713 { | |
| 714 CYG_ASSERT_SIZES( cyg_sem_t, Cyg_Counting_Semaphore ); | |
| 715 | |
| 716 Cyg_Counting_Semaphore *t = new((void *)sem) Cyg_Counting_Semaphore(val); | |
| 717 t=t; | |
| 718 } | |
| 719 | |
| 720 externC void cyg_semaphore_destroy( cyg_sem_t *sem ) | |
| 721 { | |
| 722 ((Cyg_Counting_Semaphore *)sem)->~Cyg_Counting_Semaphore(); | |
| 723 } | |
| 724 | |
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725 externC cyg_bool_t cyg_semaphore_wait( cyg_sem_t *sem ) |
| 0 | 726 { |
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727 return ((Cyg_Counting_Semaphore *)sem)->wait(); |
| 0 | 728 } |
| 729 | |
| 730 #ifdef CYGFUN_KERNEL_THREADS_TIMER | |
| 731 externC cyg_bool_t cyg_semaphore_timed_wait( | |
| 732 cyg_sem_t *sem, | |
| 733 cyg_tick_count_t abstime | |
| 734 ) | |
| 735 { | |
| 736 return ((Cyg_Counting_Semaphore *)sem)->wait(abstime); | |
| 737 } | |
| 738 #endif | |
| 739 | |
| 740 | |
| 741 externC int cyg_semaphore_trywait( cyg_sem_t *sem ) | |
| 742 { | |
| 743 return ((Cyg_Counting_Semaphore *)sem)->trywait(); | |
| 744 } | |
| 745 | |
| 746 externC void cyg_semaphore_post( cyg_sem_t *sem ) | |
| 747 { | |
| 748 ((Cyg_Counting_Semaphore *)sem)->post(); | |
| 749 } | |
| 750 | |
| 2 | 751 externC void cyg_semaphore_peek( cyg_sem_t *sem, cyg_count32 *val ) |
| 0 | 752 { |
| 753 CYG_CHECK_DATA_PTR( val, "Bad val parameter" ); | |
| 754 | |
| 755 *val = ((Cyg_Counting_Semaphore *)sem)->peek(); | |
| 756 } | |
| 757 | |
| 758 | |
| 759 /*---------------------------------------------------------------------------*/ | |
| 760 /* Flags */ | |
| 761 | |
| 762 void cyg_flag_init( | |
| 763 cyg_flag_t *flag /* Flag to init */ | |
| 764 ) | |
| 765 { | |
| 766 CYG_ASSERT_SIZES( cyg_flag_t, Cyg_Flag ); | |
| 767 CYG_ASSERT( | |
| 768 ( Cyg_Flag::AND == CYG_FLAG_WAITMODE_AND ) && | |
| 769 ( Cyg_Flag::OR == CYG_FLAG_WAITMODE_OR ) && | |
| 770 ( Cyg_Flag::CLR == CYG_FLAG_WAITMODE_CLR ), | |
| 771 "CYG_FLAG_WAITMODE_xxx definition != C++ Cyg_Flag::xxx" ); | |
| 772 | |
| 773 Cyg_Flag *t = new((void *)flag) Cyg_Flag(); | |
| 774 t=t; | |
| 775 } | |
| 776 | |
| 777 void cyg_flag_destroy( cyg_flag_t *flag ) | |
| 778 { | |
| 779 ((Cyg_Flag *)flag)->~Cyg_Flag(); | |
| 780 } | |
| 781 | |
| 782 void cyg_flag_setbits( cyg_flag_t *flag, cyg_flag_value_t value) | |
| 783 { | |
| 784 ((Cyg_Flag *)flag)->setbits( value ); | |
| 785 } | |
| 786 | |
| 787 void cyg_flag_maskbits( cyg_flag_t *flag, cyg_flag_value_t value) | |
| 788 { | |
| 789 ((Cyg_Flag *)flag)->maskbits( value ); | |
| 790 } | |
| 791 | |
| 792 cyg_flag_value_t cyg_flag_wait( cyg_flag_t *flag, | |
| 793 cyg_flag_value_t pattern, | |
| 794 cyg_flag_mode_t mode ) | |
| 795 { | |
| 796 if ( 0 == pattern || 0 != (mode & ~3) ) | |
| 797 return 0; | |
| 798 return ((Cyg_Flag *)flag)->wait( pattern, mode ); | |
| 799 | |
| 800 } | |
| 801 | |
| 802 #ifdef CYGFUN_KERNEL_THREADS_TIMER | |
| 803 cyg_flag_value_t cyg_flag_timed_wait( cyg_flag_t *flag, | |
| 804 cyg_flag_value_t pattern, | |
| 805 cyg_flag_mode_t mode, | |
| 806 cyg_tick_count_t abstime ) | |
| 807 { | |
| 808 if ( 0 == pattern || 0 != (mode & ~3) ) | |
| 809 return 0; | |
| 810 return ((Cyg_Flag *)flag)->wait( pattern, mode, abstime ); | |
| 811 | |
| 812 } | |
| 813 #endif | |
| 814 | |
| 815 cyg_flag_value_t cyg_flag_poll( cyg_flag_t *flag, | |
| 816 cyg_flag_value_t pattern, | |
| 817 cyg_flag_mode_t mode ) | |
| 818 { | |
| 819 if ( 0 == pattern || 0 != (mode & ~3) ) | |
| 820 return 0; | |
| 821 return ((Cyg_Flag *)flag)->poll( pattern, mode ); | |
| 822 | |
| 823 } | |
| 824 | |
| 825 cyg_flag_value_t cyg_flag_peek( cyg_flag_t *flag ) | |
| 826 { | |
| 827 return ((Cyg_Flag *)flag)->peek(); | |
| 828 } | |
| 829 | |
| 830 cyg_bool_t cyg_flag_waiting( cyg_flag_t *flag ) | |
| 831 { | |
| 832 return ((Cyg_Flag *)flag)->waiting(); | |
| 833 } | |
| 834 | |
| 835 /*---------------------------------------------------------------------------*/ | |
| 836 /* Mutex */ | |
| 837 | |
| 838 externC void cyg_mutex_init( | |
| 839 cyg_mutex_t *mutex /* Mutex to init */ | |
| 840 ) | |
| 841 { | |
| 842 CYG_ASSERT_SIZES( cyg_mutex_t, Cyg_Mutex ); | |
| 843 | |
| 844 Cyg_Mutex *m = new((void *)mutex) Cyg_Mutex; | |
| 845 | |
| 846 m=m; | |
| 847 } | |
| 848 | |
| 849 externC void cyg_mutex_destroy( cyg_mutex_t *mutex ) | |
| 850 { | |
|
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851 ((Cyg_Mutex *)mutex)->~Cyg_Mutex(); |
| 0 | 852 } |
| 853 | |
| 2 | 854 externC cyg_bool_t cyg_mutex_lock( cyg_mutex_t *mutex ) |
| 0 | 855 { |
| 2 | 856 return ((Cyg_Mutex *)mutex)->lock(); |
| 0 | 857 } |
| 858 | |
| 859 externC cyg_bool_t cyg_mutex_trylock( cyg_mutex_t *mutex ) | |
| 860 { | |
| 861 return ((Cyg_Mutex *)mutex)->trylock(); | |
| 862 } | |
| 863 | |
| 864 externC void cyg_mutex_unlock( cyg_mutex_t *mutex ) | |
| 865 { | |
| 866 ((Cyg_Mutex *)mutex)->unlock(); | |
| 867 } | |
| 868 | |
| 2 | 869 externC void cyg_mutex_release( cyg_mutex_t *mutex ) |
| 870 { | |
| 871 ((Cyg_Mutex *)mutex)->release(); | |
| 872 } | |
| 873 | |
| 0 | 874 /*---------------------------------------------------------------------------*/ |
| 875 /* Condition Variables */ | |
| 876 | |
| 877 externC void cyg_cond_init( | |
| 878 cyg_cond_t *cond, /* condition variable to init */ | |
| 879 cyg_mutex_t *mutex /* associated mutex */ | |
| 880 ) | |
| 881 { | |
| 882 CYG_ASSERT_SIZES( cyg_cond_t, Cyg_Condition_Variable ); | |
| 883 | |
| 884 Cyg_Condition_Variable *t = new((void *)cond) Cyg_Condition_Variable( | |
| 885 *(Cyg_Mutex *)mutex); | |
| 886 t=t; | |
| 887 } | |
| 888 | |
| 889 externC void cyg_cond_destroy( cyg_cond_t *cond ) | |
| 890 { | |
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891 ((Cyg_Condition_Variable *)cond)->~Cyg_Condition_Variable(); |
| 0 | 892 } |
| 893 | |
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894 externC cyg_bool_t cyg_cond_wait( cyg_cond_t *cond ) |
| 0 | 895 { |
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896 return ((Cyg_Condition_Variable *)cond)->wait(); |
| 0 | 897 } |
| 898 | |
| 899 externC void cyg_cond_signal( cyg_cond_t *cond ) | |
| 900 { | |
| 901 ((Cyg_Condition_Variable *)cond)->signal(); | |
| 902 } | |
| 903 | |
| 904 externC void cyg_cond_broadcast( cyg_cond_t *cond ) | |
| 905 { | |
| 906 ((Cyg_Condition_Variable *)cond)->broadcast(); | |
| 907 } | |
| 908 | |
| 909 #ifdef CYGMFN_KERNEL_SYNCH_CONDVAR_TIMED_WAIT | |
| 910 externC cyg_bool_t cyg_cond_timed_wait( | |
| 911 cyg_cond_t *cond, | |
| 912 cyg_tick_count_t abstime | |
| 913 ) | |
| 914 { | |
| 915 return ((Cyg_Condition_Variable *)cond)->wait(abstime); | |
| 916 } | |
| 917 | |
| 918 #endif | |
| 919 | |
| 920 // ------------------------------------------------------------------------- | |
| 921 // Check structure sizes. | |
| 922 // This class and constructor get run automatically in debug versions | |
| 923 // of the kernel and check that the structures configured in the C | |
| 924 // code are the same size as the C++ classes they should match. | |
| 925 | |
| 926 #ifdef CYGPKG_INFRA_DEBUG | |
| 927 | |
| 928 class Cyg_Check_Structure_Sizes | |
| 929 { | |
| 930 int dummy; | |
| 931 public: | |
| 932 Cyg_Check_Structure_Sizes( int x ); | |
| 933 | |
| 934 }; | |
| 935 | |
| 936 #define CYG_CHECK_SIZES(cstruct, cxxstruct) \ | |
| 937 if( sizeof(cstruct) != sizeof(cxxstruct) ) \ | |
| 938 { \ | |
| 939 char *fmt = "Size of C struct " #cstruct \ | |
| 940 " != size of C++ struct " #cxxstruct ; \ | |
| 941 CYG_TRACE2(1, fmt, sizeof(cstruct) , sizeof(cxxstruct) ); \ | |
| 942 fail = true; \ | |
| 943 fmt = fmt; \ | |
| 944 } | |
| 945 | |
| 946 Cyg_Check_Structure_Sizes::Cyg_Check_Structure_Sizes(int x) | |
| 947 { | |
| 948 cyg_bool fail = false; | |
| 949 | |
| 950 dummy = x+1; | |
| 951 | |
| 952 CYG_CHECK_SIZES( cyg_thread, Cyg_Thread ); | |
| 953 CYG_CHECK_SIZES( cyg_interrupt, Cyg_Interrupt ); | |
| 954 CYG_CHECK_SIZES( cyg_counter, Cyg_Counter ); | |
| 955 CYG_CHECK_SIZES( cyg_clock, Cyg_Clock ); | |
| 956 CYG_CHECK_SIZES( cyg_alarm, Cyg_Alarm ); | |
| 957 CYG_CHECK_SIZES( cyg_mbox, Cyg_Mbox ); | |
| 958 CYG_CHECK_SIZES( cyg_sem_t, Cyg_Counting_Semaphore ); | |
| 959 CYG_CHECK_SIZES( cyg_flag_t, Cyg_Flag ); | |
| 960 CYG_CHECK_SIZES( cyg_mutex_t, Cyg_Mutex ); | |
| 961 CYG_CHECK_SIZES( cyg_cond_t, Cyg_Condition_Variable ); | |
| 962 | |
| 963 CYG_ASSERT( !fail, "Size checks failed"); | |
| 964 } | |
| 965 | |
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966 static Cyg_Check_Structure_Sizes cyg_kapi_check_structure_sizes(1); |
| 0 | 967 |
| 968 #endif | |
| 969 | |
| 970 | |
| 971 // ------------------------------------------------------------------------- | |
| 972 | |
| 973 #endif | |
| 974 // EOF common/kapi.cxx |