Mercurial > flash_v2
annotate packages/kernel/current/src/common/kapi.cxx @ 1031:6b4a1f23fbbb
* src/common/kapi.cxx (cyg_thread_get_next): Passing a *current
pointer as NULL is how you start the walk of the linked list. So
don't assert on NULL. Reported by Daniel Lidsten.
| author | asl |
|---|---|
| date | Tue, 20 May 2003 08:56:42 +0000 |
| parents | bd1ddaaaf796 |
| children | 1b465c781382 |
| rev | line source |
|---|---|
| 0 | 1 //========================================================================== |
| 2 // | |
| 2 | 3 // common/kapi.cxx |
| 0 | 4 // |
| 2 | 5 // C API Implementation |
| 0 | 6 // |
| 7 //========================================================================== | |
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8 //####ECOSGPLCOPYRIGHTBEGIN#### |
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9 // ------------------------------------------- |
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10 // This file is part of eCos, the Embedded Configurable Operating System. |
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. |
| 460 | 12 // Copyright (C) 2002 Nick Garnett |
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13 // Copyright (C) 2003 Jonathan Larmour |
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14 // |
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15 // eCos is free software; you can redistribute it and/or modify it under |
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16 // the terms of the GNU General Public License as published by the Free |
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17 // Software Foundation; either version 2 or (at your option) any later version. |
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18 // |
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19 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY |
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20 // WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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21 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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22 // for more details. |
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23 // |
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24 // You should have received a copy of the GNU General Public License along |
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25 // with eCos; if not, write to the Free Software Foundation, Inc., |
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26 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
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27 // |
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28 // As a special exception, if other files instantiate templates or use macros |
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29 // or inline functions from this file, or you compile this file and link it |
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30 // with other works to produce a work based on this file, this file does not |
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31 // by itself cause the resulting work to be covered by the GNU General Public |
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32 // License. However the source code for this file must still be made available |
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33 // in accordance with section (3) of the GNU General Public License. |
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34 // |
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35 // This exception does not invalidate any other reasons why a work based on |
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36 // this file might be covered by the GNU General Public License. |
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37 // |
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38 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. |
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39 // at http://sources.redhat.com/ecos/ecos-license/ |
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40 // ------------------------------------------- |
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41 //####ECOSGPLCOPYRIGHTEND#### |
| 0 | 42 //========================================================================== |
| 43 //#####DESCRIPTIONBEGIN#### | |
| 44 // | |
| 2 | 45 // Author(s): nickg, dsm |
| 46 // Contributors: nickg | |
| 47 // Date: 1998-03-02 | |
| 48 // Purpose: C API Implementation | |
| 49 // Description: C++ implementation of the C API | |
| 0 | 50 // |
| 51 // | |
| 52 //####DESCRIPTIONEND#### | |
| 53 // | |
| 54 //========================================================================== | |
| 55 | |
| 56 #include <pkgconf/kernel.h> | |
| 57 | |
| 58 #ifdef CYGFUN_KERNEL_API_C | |
| 59 | |
| 60 #include <cyg/kernel/ktypes.h> // base kernel types | |
| 61 #include <cyg/infra/cyg_trac.h> // tracing macros | |
| 62 #include <cyg/infra/cyg_ass.h> // assertion macros | |
| 63 #include <cyg/kernel/instrmnt.h> // instrumentation | |
| 64 #include <cyg/kernel/diag.h> | |
| 65 | |
| 66 #include <cyg/kernel/thread.hxx> | |
| 67 #include <cyg/kernel/thread.inl> // thread inlines | |
| 68 #include <cyg/kernel/sched.hxx> | |
| 69 #include <cyg/kernel/intr.hxx> | |
| 70 #include <cyg/kernel/clock.hxx> | |
| 71 | |
| 72 #include <cyg/kernel/sema.hxx> | |
| 73 #include <cyg/kernel/flag.hxx> | |
| 74 #include <cyg/kernel/mutex.hxx> | |
| 75 #include <cyg/kernel/mbox.hxx> | |
| 76 | |
| 77 #include <cyg/kernel/sched.inl> // scheduler inlines | |
| 78 #include <cyg/kernel/clock.inl> // clock inlines | |
| 79 | |
| 80 #include <cyg/kernel/kapi.h> // C API | |
| 81 | |
| 82 // ------------------------------------------------------------------------- | |
| 83 // Magic new function | |
| 84 | |
| 85 inline void *operator new(size_t size, void *ptr) | |
| 86 { | |
| 87 CYG_CHECK_DATA_PTR( ptr, "Bad pointer" ); | |
| 88 return ptr; | |
| 89 } | |
| 90 | |
| 91 // ------------------------------------------------------------------------- | |
| 92 | |
| 93 #ifdef CYGDBG_USE_ASSERTS | |
| 94 | |
| 95 #define CYG_ASSERT_SIZES(cstruct, cxxstruct) \ | |
| 96 CYG_MACRO_START \ | |
| 97 char *msg = "Size of C struct " #cstruct \ | |
| 98 " != size of C++ struct " #cxxstruct ; \ | |
| 99 CYG_ASSERT( sizeof(cstruct) == sizeof(cxxstruct) , msg ); \ | |
| 100 CYG_MACRO_END | |
| 101 | |
| 102 #else | |
| 103 | |
| 104 #define CYG_ASSERT_SIZES(cstruct, cxxstruct) | |
| 105 | |
| 106 #endif | |
| 107 | |
| 108 /*---------------------------------------------------------------------------*/ | |
| 109 /* Scheduler operations */ | |
| 110 | |
| 111 /* Starts scheduler with created threads. Never returns. */ | |
| 112 externC void cyg_scheduler_start(void) | |
| 113 { | |
| 114 Cyg_Scheduler::start(); | |
| 115 } | |
| 116 | |
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117 /* Lock the scheduler. */ |
| 0 | 118 externC void cyg_scheduler_lock(void) |
| 119 { | |
| 120 Cyg_Scheduler::lock(); | |
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121 // get_sched_lock() is unsigned, see below "cyg_ucount32 lock" |
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122 CYG_ASSERT( (0xff000000 & (Cyg_Scheduler::get_sched_lock())) == 0, |
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123 "Scheduler overlocked" ); |
| 0 | 124 } |
| 125 | |
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126 /* Lock the scheduler, but never more than level=1. */ |
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127 externC void cyg_scheduler_safe_lock(void) |
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128 { |
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129 Cyg_Scheduler::lock(); |
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130 cyg_ucount32 slock = Cyg_Scheduler::get_sched_lock(); |
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131 if (slock > 1) |
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132 Cyg_Scheduler::unlock(); |
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133 // get_sched_lock() is unsigned, see below "cyg_ucount32 lock" |
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134 CYG_ASSERT( (0xff000000 & (Cyg_Scheduler::get_sched_lock())) == 0, |
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135 "Scheduler overlocked" ); |
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136 } |
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137 |
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138 /* Unlock the scheduler. */ |
| 0 | 139 externC void cyg_scheduler_unlock(void) |
| 140 { | |
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141 cyg_ucount32 slock = Cyg_Scheduler::get_sched_lock(); |
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142 CYG_ASSERT( 0 < slock, "Scheduler not locked" ); |
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143 // And program defensively too: |
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144 if ( 0 < slock ) |
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145 Cyg_Scheduler::unlock(); |
| 0 | 146 } |
| 147 | |
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148 /* Read the scheduler lock value. */ |
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149 externC cyg_ucount32 cyg_scheduler_read_lock(void) |
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150 { |
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151 cyg_ucount32 slock = Cyg_Scheduler::get_sched_lock(); |
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152 return slock; |
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153 } |
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154 |
| 0 | 155 /*---------------------------------------------------------------------------*/ |
| 156 /* Thread operations */ | |
| 157 | |
| 158 externC void cyg_thread_create( | |
| 2 | 159 cyg_addrword_t sched_info, /* scheduling info (eg pri) */ |
| 0 | 160 cyg_thread_entry_t *entry, /* entry point function */ |
| 2 | 161 cyg_addrword_t entry_data, /* entry data */ |
| 0 | 162 char *name, /* optional thread name */ |
| 163 void *stack_base, /* stack base, NULL = alloc */ | |
| 164 cyg_ucount32 stack_size, /* stack size, 0 = default */ | |
| 165 cyg_handle_t *handle, /* returned thread handle */ | |
| 166 cyg_thread *thread /* put thread here */ | |
| 167 ) | |
| 168 { | |
| 169 CYG_ASSERT_SIZES( cyg_thread, Cyg_Thread ); | |
| 170 | |
| 171 Cyg_Thread *t = new((void *)thread) Cyg_Thread ( | |
| 172 (CYG_ADDRWORD) sched_info, | |
| 173 (cyg_thread_entry *)entry, | |
| 174 (CYG_ADDRWORD) entry_data, | |
| 175 name, | |
| 2 | 176 (CYG_ADDRWORD) stack_base, |
| 177 stack_size | |
| 0 | 178 ); |
| 179 t=t; | |
| 180 | |
| 181 CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" ); | |
| 182 *handle = (cyg_handle_t)thread; | |
| 183 } | |
| 184 | |
| 185 externC void cyg_thread_exit() | |
| 186 { | |
| 187 Cyg_Thread::exit(); | |
| 188 } | |
| 189 | |
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190 externC cyg_bool_t cyg_thread_delete( cyg_handle_t thread ) |
| 2 | 191 { |
| 192 Cyg_Thread *th = (Cyg_Thread *)thread; | |
| 193 if( th->get_state() != Cyg_Thread::EXITED ) | |
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194 th->kill(); // encourage it to terminate |
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195 if( th->get_state() != Cyg_Thread::EXITED ) |
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196 return false; // it didn't run yet, leave it up to the app to fix |
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197 th->~Cyg_Thread(); |
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198 return true; |
| 2 | 199 } |
| 200 | |
| 0 | 201 externC void cyg_thread_suspend(cyg_handle_t thread) |
| 202 { | |
| 203 ((Cyg_Thread *)thread)->suspend(); | |
| 204 } | |
| 205 | |
| 206 externC void cyg_thread_resume(cyg_handle_t thread) | |
| 207 { | |
| 208 Cyg_Thread *th = (Cyg_Thread *)thread; | |
| 209 | |
| 210 // If we are resuming an exited thread then | |
| 211 // reinitialize it. | |
| 212 | |
| 213 if( th->get_state() == Cyg_Thread::EXITED ) | |
| 214 th->reinitialize(); | |
| 215 | |
| 216 th->resume(); | |
| 217 } | |
| 218 | |
| 219 externC void cyg_thread_kill( cyg_handle_t thread) | |
| 220 { | |
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221 ((Cyg_Thread *)thread)->kill(); |
| 0 | 222 } |
| 223 | |
| 2 | 224 externC void cyg_thread_release( cyg_handle_t thread) |
| 225 { | |
| 226 ((Cyg_Thread *)thread)->release(); | |
| 227 } | |
| 228 | |
| 0 | 229 externC void cyg_thread_yield() |
| 230 { | |
| 231 Cyg_Thread::yield(); | |
| 232 } | |
| 233 | |
| 234 externC cyg_handle_t cyg_thread_self() | |
| 235 { | |
| 236 return (cyg_handle_t)Cyg_Thread::self(); | |
| 237 } | |
| 238 | |
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239 // idle thread is not really a plain CygThread; danger. |
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240 externC cyg_handle_t cyg_thread_idle_thread() |
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241 { |
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242 extern Cyg_Thread idle_thread; |
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243 return (cyg_handle_t)&idle_thread; |
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244 } |
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245 |
| 0 | 246 /* Priority manipulation */ |
| 247 externC void cyg_thread_set_priority( | |
| 248 cyg_handle_t thread, cyg_priority_t priority ) | |
| 249 { | |
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250 #ifdef CYGIMP_THREAD_PRIORITY |
| 0 | 251 ((Cyg_Thread *)thread)->set_priority(priority); |
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252 #endif |
| 0 | 253 } |
| 254 | |
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255 |
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256 /* Get the normal priority, ie without any applied mutex inheritance or |
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257 * ceiling protocol. */ |
| 0 | 258 externC cyg_priority_t cyg_thread_get_priority(cyg_handle_t thread) |
| 259 { | |
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260 #ifdef CYGIMP_THREAD_PRIORITY |
| 0 | 261 return ((Cyg_Thread *)thread)->get_priority(); |
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262 #else |
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263 return 0; |
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264 #endif |
| 0 | 265 } |
| 266 | |
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267 |
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268 /* Get the current priority, ie any applied mutex inheritance or |
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269 * ceiling protocol. */ |
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270 externC cyg_priority_t cyg_thread_get_current_priority(cyg_handle_t thread) |
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271 { |
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272 #ifdef CYGIMP_THREAD_PRIORITY |
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273 return ((Cyg_Thread *)thread)->get_current_priority(); |
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274 #else |
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275 return 0; |
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276 #endif |
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277 } |
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278 |
| 0 | 279 /* Deadline scheduling control (optional) */ |
| 280 | |
| 281 externC void cyg_thread_deadline_wait( | |
| 282 cyg_tick_count_t start_time, /* abs earliest start time */ | |
| 283 cyg_tick_count_t run_time, /* worst case execution time */ | |
| 284 cyg_tick_count_t deadline /* absolute deadline */ | |
| 285 ) | |
| 286 { | |
| 287 CYG_ASSERT(0,"Not implemented"); | |
| 288 } | |
| 289 | |
| 290 externC void cyg_thread_delay(cyg_tick_count_t delay) | |
| 291 { | |
| 292 Cyg_Thread::self()->delay(delay); | |
| 293 } | |
| 294 | |
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295 /* Stack information */ |
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296 externC cyg_addrword_t cyg_thread_get_stack_base(cyg_handle_t thread) |
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297 { |
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298 return ((Cyg_Thread *)thread)->get_stack_base(); |
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299 } |
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300 |
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301 externC cyg_uint32 cyg_thread_get_stack_size(cyg_handle_t thread) |
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302 { |
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303 return ((Cyg_Thread *)thread)->get_stack_size(); |
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304 } |
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305 |
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306 #ifdef CYGFUN_KERNEL_THREADS_STACK_MEASUREMENT |
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307 externC cyg_uint32 cyg_thread_measure_stack_usage(cyg_handle_t thread) |
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308 { |
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309 return ((Cyg_Thread *)thread)->measure_stack_usage(); |
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310 } |
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311 #endif |
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312 |
| 2 | 313 /*---------------------------------------------------------------------------*/ |
| 460 | 314 /* Thread enumeration and information */ |
| 315 | |
| 316 #ifdef CYGVAR_KERNEL_THREADS_LIST | |
| 317 | |
| 318 cyg_bool_t cyg_thread_get_next( cyg_handle_t *current, cyg_uint16 *id ) | |
| 319 { | |
| 320 cyg_bool_t result = true; | |
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321 |
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322 // There is a minute but finite chance that the thread could have |
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323 // exitted since the previous cyg_thread_get_next() call, and we can't |
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324 // detect the ID mismatch further down. So be quite zealous with checking. |
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325 |
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326 CYG_CHECK_DATA_PTRC( current ); |
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327 CYG_CHECK_DATA_PTRC( id ); |
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328 if ( *current != 0 ) |
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329 CYG_CHECK_DATA_PTRC( *current ); |
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330 |
| 460 | 331 Cyg_Scheduler::lock(); |
| 332 | |
| 333 Cyg_Thread *thread = (Cyg_Thread *)*current; | |
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334 CYG_ASSERT_ZERO_OR_CLASSC( thread ); |
| 460 | 335 if( *current == 0 ) |
| 336 { | |
| 337 thread = Cyg_Thread::get_list_head(); | |
| 338 *current = (cyg_handle_t)thread; | |
| 339 *id = thread->get_unique_id(); | |
| 340 } | |
| 341 else if( (thread->get_unique_id() == *id) && | |
| 342 (thread = thread->get_list_next()) != NULL ) | |
| 343 { | |
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344 CYG_CHECK_DATA_PTRC( thread ); |
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345 CYG_ASSERT_CLASSC( thread ); |
| 460 | 346 *current = (cyg_handle_t)thread; |
| 347 *id = thread->get_unique_id(); | |
| 348 } | |
| 349 else | |
| 350 { | |
| 351 *current = 0; | |
| 352 *id = 0; | |
| 353 result = false; | |
| 354 } | |
| 355 | |
| 356 Cyg_Scheduler::unlock(); | |
| 357 | |
| 358 return result; | |
| 359 } | |
| 360 | |
| 361 cyg_handle_t cyg_thread_find( cyg_uint16 id ) | |
| 362 { | |
| 363 Cyg_Scheduler::lock(); | |
| 364 | |
| 365 Cyg_Thread *thread = Cyg_Thread::get_list_head(); | |
| 366 | |
| 367 while( thread != NULL ) | |
| 368 { | |
| 369 if( thread->get_unique_id() == id ) | |
| 370 break; | |
| 371 | |
| 372 thread = thread->get_list_next(); | |
| 373 } | |
| 374 | |
| 375 Cyg_Scheduler::unlock(); | |
| 376 | |
| 377 return (cyg_handle_t)thread; | |
| 378 } | |
| 379 | |
| 380 #endif | |
| 381 | |
| 382 cyg_bool_t cyg_thread_get_info( cyg_handle_t threadh, | |
| 383 cyg_uint16 id, | |
| 384 cyg_thread_info *info ) | |
| 385 { | |
| 386 cyg_bool_t result = true; | |
| 387 Cyg_Thread *thread = (Cyg_Thread *)threadh; | |
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388 CYG_CHECK_DATA_PTRC( thread ); |
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389 if ( NULL != info ) |
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390 CYG_CHECK_DATA_PTRC( info ); |
| 460 | 391 |
| 392 Cyg_Scheduler::lock(); | |
| 393 | |
| 394 if( thread->get_unique_id() == id && info != NULL ) | |
| 395 { | |
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396 CYG_ASSERT_CLASSC( thread ); |
| 460 | 397 info->handle = threadh; |
| 398 info->id = id; | |
| 399 info->state = thread->get_state(); | |
| 400 #ifdef CYGVAR_KERNEL_THREADS_NAME | |
| 401 info->name = thread->get_name(); | |
| 402 #else | |
| 403 info->name = NULL; | |
| 404 #endif | |
| 405 info->set_pri = thread->get_priority(); | |
| 406 info->cur_pri = thread->get_current_priority(); | |
| 407 info->stack_base = thread->get_stack_base(); | |
| 408 info->stack_size = thread->get_stack_size(); | |
| 409 | |
| 410 #ifdef CYGFUN_KERNEL_THREADS_STACK_MEASUREMENT | |
| 411 info->stack_used = thread->measure_stack_usage(); | |
| 412 #else | |
| 413 info->stack_used = 0; | |
| 414 #endif | |
| 415 } | |
| 416 else result = false; | |
| 417 | |
| 418 Cyg_Scheduler::unlock(); | |
| 419 | |
| 420 return result; | |
| 421 } | |
| 422 | |
| 423 /*---------------------------------------------------------------------------*/ | |
| 2 | 424 /* Per-thread data */ |
| 425 | |
| 426 #ifdef CYGVAR_KERNEL_THREADS_DATA | |
| 427 | |
| 428 externC cyg_ucount32 cyg_thread_new_data_index() | |
| 429 { | |
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430 Cyg_Thread::cyg_data_index index = Cyg_Thread::new_data_index(); |
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431 CYG_ASSERT(index >= 0, "failed to allocate data index" ); |
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432 return index; |
| 2 | 433 } |
| 434 | |
| 435 externC void cyg_thread_free_data_index(cyg_ucount32 index) | |
| 436 { | |
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437 Cyg_Thread::free_data_index(index); |
| 2 | 438 } |
| 439 | |
| 440 externC CYG_ADDRWORD cyg_thread_get_data(cyg_ucount32 index) | |
| 441 { | |
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442 return Cyg_Thread::get_data(index); |
| 2 | 443 } |
| 444 | |
| 445 externC CYG_ADDRWORD *cyg_thread_get_data_ptr(cyg_ucount32 index) | |
| 446 { | |
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447 return Cyg_Thread::get_data_ptr(index); |
| 2 | 448 } |
| 449 | |
| 450 externC void cyg_thread_set_data(cyg_ucount32 index, CYG_ADDRWORD | |
| 451 data) | |
| 452 { | |
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453 Cyg_Thread::self()->set_data(index, data); |
| 2 | 454 } |
| 455 #endif | |
| 0 | 456 |
| 457 /*---------------------------------------------------------------------------*/ | |
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458 /* Thread destructors */ |
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459 |
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460 #ifdef CYGPKG_KERNEL_THREADS_DESTRUCTORS |
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461 __externC cyg_bool_t |
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462 cyg_thread_add_destructor( cyg_thread_destructor_fn fn, |
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463 cyg_addrword_t data ) |
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464 { |
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465 return Cyg_Thread::self()->add_destructor( fn, data ); |
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466 } |
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467 |
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468 __externC cyg_bool_t |
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469 cyg_thread_rem_destructor( cyg_thread_destructor_fn fn, |
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470 cyg_addrword_t data ) |
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471 { |
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472 return Cyg_Thread::self()->rem_destructor( fn, data ); |
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473 } |
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474 #endif |
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475 |
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476 /*---------------------------------------------------------------------------*/ |
| 0 | 477 /* Exception handling. */ |
| 478 | |
| 479 #ifdef CYGPKG_KERNEL_EXCEPTIONS | |
| 480 externC void cyg_exception_set_handler( | |
| 481 cyg_code_t exception_number, | |
| 482 cyg_exception_handler_t *new_handler, | |
| 2 | 483 cyg_addrword_t new_data, |
| 0 | 484 cyg_exception_handler_t **old_handler, |
| 2 | 485 cyg_addrword_t *old_data |
| 0 | 486 ) |
| 487 { | |
| 488 Cyg_Thread::register_exception( | |
| 489 exception_number, | |
| 490 (cyg_exception_handler *)new_handler, | |
| 491 (CYG_ADDRWORD)new_data, | |
| 492 (cyg_exception_handler **)old_handler, | |
| 493 (CYG_ADDRWORD *)old_data | |
| 494 ); | |
| 495 } | |
| 496 | |
| 497 /* Clear exception handler to default */ | |
| 498 externC void cyg_exception_clear_handler( | |
| 499 cyg_code_t exception_number | |
| 500 ) | |
| 501 { | |
| 502 Cyg_Thread::deregister_exception( exception_number ); | |
| 503 } | |
| 504 | |
| 505 /* Invoke exception handler */ | |
| 506 externC void cyg_exception_call_handler( | |
| 507 cyg_handle_t thread, | |
| 508 cyg_code_t exception_number, | |
| 2 | 509 cyg_addrword_t error_code |
| 0 | 510 ) |
| 511 { | |
| 512 Cyg_Thread *t = (Cyg_Thread *)thread; | |
| 513 | |
| 514 t->deliver_exception( exception_number, error_code ); | |
| 515 } | |
| 516 #endif | |
| 517 | |
| 518 /*---------------------------------------------------------------------------*/ | |
| 519 /* Interrupt handling */ | |
| 520 | |
| 521 externC void cyg_interrupt_create( | |
| 522 cyg_vector_t vector, /* Vector to attach to */ | |
| 523 cyg_priority_t priority, /* Queue priority */ | |
| 2 | 524 cyg_addrword_t data, /* Data pointer */ |
| 0 | 525 cyg_ISR_t *isr, /* Interrupt Service Routine */ |
| 526 cyg_DSR_t *dsr, /* Deferred Service Routine */ | |
| 527 cyg_handle_t *handle, /* returned handle */ | |
| 528 cyg_interrupt *intr /* put interrupt here */ | |
| 529 ) | |
| 530 { | |
| 531 CYG_ASSERT_SIZES( cyg_interrupt, Cyg_Interrupt ); | |
| 532 | |
| 533 Cyg_Interrupt *t = new((void *)intr) Cyg_Interrupt ( | |
| 534 (cyg_vector)vector, | |
| 535 (cyg_priority)priority, | |
| 536 (CYG_ADDRWORD)data, | |
| 537 (cyg_ISR *)isr, | |
| 538 (cyg_DSR *)dsr ); | |
| 539 t=t; | |
| 540 | |
| 541 CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" ); | |
| 542 *handle = (cyg_handle_t)intr; | |
| 543 } | |
| 544 | |
| 545 externC void cyg_interrupt_delete( cyg_handle_t interrupt) | |
| 546 { | |
| 547 ((Cyg_Interrupt *)interrupt)->~Cyg_Interrupt(); | |
| 548 } | |
| 549 | |
| 550 void cyg_interrupt_attach( cyg_handle_t interrupt ) | |
| 551 { | |
| 552 ((Cyg_Interrupt *)interrupt)->attach(); | |
| 553 } | |
| 554 | |
| 555 void cyg_interrupt_detach( cyg_handle_t interrupt ) | |
| 556 { | |
| 557 ((Cyg_Interrupt *)interrupt)->detach(); | |
| 558 } | |
| 559 | |
| 560 /* VSR manipulation */ | |
| 561 | |
| 562 externC void cyg_interrupt_get_vsr( | |
| 563 cyg_vector_t vector, /* vector to get */ | |
| 564 cyg_VSR_t **vsr /* vsr got */ | |
| 565 ) | |
| 566 { | |
| 567 Cyg_Interrupt::get_vsr( (cyg_vector)vector, (cyg_VSR **)vsr); | |
| 568 } | |
| 569 | |
| 570 externC void cyg_interrupt_set_vsr( | |
| 571 cyg_vector_t vector, /* vector to set */ | |
| 572 cyg_VSR_t *vsr /* vsr to set */ | |
| 573 ) | |
| 574 { | |
| 575 Cyg_Interrupt::set_vsr( (cyg_vector)vector, (cyg_VSR *)vsr); | |
| 576 } | |
| 577 | |
| 578 /* CPU level interrupt mask */ | |
| 579 externC void cyg_interrupt_disable() | |
| 580 { | |
| 581 Cyg_Interrupt::disable_interrupts(); | |
| 582 } | |
| 583 | |
| 584 externC void cyg_interrupt_enable() | |
| 585 { | |
| 586 Cyg_Interrupt::enable_interrupts(); | |
| 587 } | |
| 588 | |
| 589 /* Interrupt controller access */ | |
| 590 externC void cyg_interrupt_mask(cyg_vector_t vector) | |
| 591 { | |
| 592 Cyg_Interrupt::mask_interrupt( (cyg_vector)vector); | |
| 593 } | |
| 594 | |
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595 externC void cyg_interrupt_mask_intunsafe(cyg_vector_t vector) |
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596 { |
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597 Cyg_Interrupt::mask_interrupt_intunsafe( (cyg_vector)vector); |
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598 } |
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599 |
| 0 | 600 externC void cyg_interrupt_unmask(cyg_vector_t vector) |
| 601 { | |
| 602 Cyg_Interrupt::unmask_interrupt( (cyg_vector)vector); | |
| 603 } | |
| 604 | |
|
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605 externC void cyg_interrupt_unmask_intunsafe(cyg_vector_t vector) |
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606 { |
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607 Cyg_Interrupt::unmask_interrupt_intunsafe( (cyg_vector)vector); |
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608 } |
| 0 | 609 |
| 610 externC void cyg_interrupt_acknowledge(cyg_vector_t vector) | |
| 611 { | |
| 612 Cyg_Interrupt::acknowledge_interrupt( (cyg_vector)vector); | |
| 613 } | |
| 614 | |
| 615 | |
| 616 externC void cyg_interrupt_configure( | |
| 617 cyg_vector_t vector, /* vector to configure */ | |
| 618 cyg_bool_t level, /* level or edge triggered */ | |
| 619 cyg_bool_t up /* rising/faling edge, high/low level*/ | |
| 620 ) | |
| 621 { | |
| 622 Cyg_Interrupt::configure_interrupt( (cyg_vector)vector, level, up ); | |
| 623 } | |
| 624 | |
|
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625 externC void cyg_interrupt_set_cpu( |
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626 cyg_vector_t vector, /* vector to control */ |
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627 cyg_cpu_t cpu /* CPU to set */ |
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628 ) |
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629 { |
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630 #ifdef CYGPKG_KERNEL_SMP_SUPPORT |
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631 Cyg_Interrupt::set_cpu( vector, cpu ); |
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632 #endif |
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633 } |
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634 |
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635 externC cyg_cpu_t cyg_interrupt_get_cpu( |
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636 cyg_vector_t vector /* vector to control */ |
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637 ) |
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638 { |
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639 #ifdef CYGPKG_KERNEL_SMP_SUPPORT |
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640 return Cyg_Interrupt::get_cpu( vector ); |
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641 #else |
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642 return CYG_KERNEL_CPU_THIS(); |
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643 #endif |
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644 |
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645 } |
| 0 | 646 |
| 647 /*---------------------------------------------------------------------------*/ | |
| 648 /* Counters, Clocks and Alarms */ | |
| 649 | |
| 650 externC void cyg_counter_create( | |
| 651 cyg_handle_t *handle, /* returned counter handle */ | |
| 652 cyg_counter *counter /* put counter here */ | |
| 653 ) | |
| 654 { | |
| 655 CYG_ASSERT_SIZES( cyg_counter, Cyg_Counter ); | |
| 656 | |
| 657 Cyg_Counter *t = new((void *)counter) Cyg_Counter (); | |
| 658 t=t; | |
| 659 | |
| 660 CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" ); | |
| 661 *handle = (cyg_handle_t)counter; | |
| 662 } | |
| 663 | |
| 664 externC void cyg_counter_delete(cyg_handle_t counter) | |
| 665 { | |
| 666 ((Cyg_Counter *)counter)->~Cyg_Counter(); | |
| 667 } | |
| 668 | |
| 669 /* Return current value of counter */ | |
| 670 externC cyg_tick_count_t cyg_counter_current_value(cyg_handle_t counter) | |
| 671 { | |
| 672 return ((Cyg_Counter *)counter)->current_value(); | |
| 673 } | |
| 674 | |
| 675 /* Set new current value */ | |
| 676 externC void cyg_counter_set_value( | |
| 677 cyg_handle_t counter, | |
| 678 cyg_tick_count_t new_value | |
| 679 ) | |
| 680 { | |
| 681 ((Cyg_Counter *)counter)->set_value( new_value ); | |
| 682 } | |
| 683 | |
| 684 /* Advance counter by one tick */ | |
| 685 externC void cyg_counter_tick(cyg_handle_t counter) | |
| 686 { | |
| 687 ((Cyg_Counter *)counter)->tick(); | |
| 688 } | |
| 689 | |
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690 /* Advance counter by multiple ticks */ |
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691 externC void cyg_counter_multi_tick(cyg_handle_t counter, cyg_tick_count_t ticks) |
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692 { |
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693 ((Cyg_Counter *)counter)->tick(ticks); |
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694 } |
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695 |
| 0 | 696 /* Create a clock object */ |
| 697 externC void cyg_clock_create( | |
| 698 cyg_resolution_t resolution, /* Initial resolution */ | |
| 699 cyg_handle_t *handle, /* Returned clock handle */ | |
| 700 cyg_clock *clock /* put clock here */ | |
| 701 ) | |
| 702 { | |
| 703 CYG_ASSERT_SIZES( cyg_clock, Cyg_Clock ); | |
| 704 | |
| 705 Cyg_Clock::cyg_resolution res; | |
| 706 | |
| 707 res.dividend = resolution.dividend; | |
| 708 res.divisor = resolution.divisor; | |
| 709 | |
| 710 Cyg_Clock *t = new((void *)clock) Cyg_Clock ( res ); | |
| 711 t=t; | |
| 712 | |
| 713 CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" ); | |
| 714 *handle = (cyg_handle_t)clock; | |
| 715 } | |
| 716 | |
| 717 externC void cyg_clock_delete(cyg_handle_t clock) | |
| 718 { | |
| 719 ((Cyg_Clock *)clock)->~Cyg_Clock(); | |
| 720 } | |
| 721 | |
| 722 /* convert a clock handle to a counter handle so we can use the */ | |
| 723 /* counter API on it. */ | |
| 724 externC void cyg_clock_to_counter( | |
| 725 cyg_handle_t clock, | |
| 726 cyg_handle_t *counter | |
| 727 ) | |
| 728 { | |
| 729 CYG_CHECK_DATA_PTR( counter, "Bad counter handle pointer" ); | |
| 730 *counter = (cyg_handle_t)(Cyg_Counter *)clock; | |
| 731 } | |
| 732 | |
| 733 externC void cyg_clock_set_resolution( | |
| 734 cyg_handle_t clock, | |
| 735 cyg_resolution_t resolution /* New resolution */ | |
| 736 ) | |
| 737 { | |
| 738 Cyg_Clock::cyg_resolution res; | |
| 739 | |
| 740 res.dividend = resolution.dividend; | |
| 741 res.divisor = resolution.divisor; | |
| 742 | |
| 743 ((Cyg_Clock *)clock)->set_resolution( res ); | |
| 744 } | |
| 745 | |
| 746 externC cyg_resolution_t cyg_clock_get_resolution(cyg_handle_t clock) | |
| 747 { | |
| 748 Cyg_Clock::cyg_resolution res = | |
| 749 ((Cyg_Clock *)clock)->get_resolution(); | |
| 750 | |
| 751 cyg_resolution_t resolution; | |
| 752 | |
| 753 resolution.dividend = res.dividend; | |
| 754 resolution.divisor = res.divisor; | |
| 755 | |
| 756 return resolution; | |
| 757 } | |
| 758 | |
| 759 #ifdef CYGVAR_KERNEL_COUNTERS_CLOCK | |
| 760 externC cyg_handle_t cyg_real_time_clock(void) | |
| 761 { | |
| 762 return (cyg_handle_t)Cyg_Clock::real_time_clock; | |
| 763 } | |
| 764 | |
| 765 externC cyg_tick_count_t cyg_current_time(void) | |
| 766 { | |
| 767 return Cyg_Clock::real_time_clock->current_value(); | |
| 768 } | |
| 769 #endif | |
| 770 | |
| 771 externC void cyg_alarm_create( | |
| 772 cyg_handle_t counter, /* Attached to this counter */ | |
| 773 cyg_alarm_t *alarmfn, /* Call-back function */ | |
| 2 | 774 cyg_addrword_t data, /* Call-back data */ |
| 0 | 775 cyg_handle_t *handle, /* Returned alarm object */ |
| 776 cyg_alarm *alarm /* put alarm here */ | |
| 777 ) | |
| 778 { | |
| 779 CYG_ASSERT_SIZES( cyg_alarm, Cyg_Alarm ); | |
| 780 | |
| 781 Cyg_Alarm *t = new((void *)alarm) Cyg_Alarm ( | |
| 782 (Cyg_Counter *)counter, | |
| 2 | 783 (cyg_alarm_fn *)alarmfn, |
| 784 (CYG_ADDRWORD)data | |
| 0 | 785 ); |
| 786 t=t; | |
| 787 | |
| 788 CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" ); | |
| 789 *handle = (cyg_handle_t)alarm; | |
| 790 } | |
| 791 | |
| 792 /* Disable alarm, detach from counter and invalidate handles */ | |
| 793 externC void cyg_alarm_delete( cyg_handle_t alarm) | |
| 794 { | |
| 795 ((Cyg_Alarm *)alarm)->~Cyg_Alarm(); | |
| 796 } | |
| 797 | |
| 798 externC void cyg_alarm_initialize( | |
| 799 cyg_handle_t alarm, | |
| 800 cyg_tick_count_t trigger, /* Absolute trigger time */ | |
| 801 cyg_tick_count_t interval /* Relative retrigger interval */ | |
| 802 ) | |
| 803 { | |
| 804 ((Cyg_Alarm *)alarm)->initialize( | |
| 2 | 805 (cyg_tick_count)trigger, |
| 806 (cyg_tick_count)interval); | |
| 0 | 807 } |
| 808 | |
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809 externC void cyg_alarm_get_times( |
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810 cyg_handle_t alarm, |
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811 cyg_tick_count_t *trigger, /* Next trigger time */ |
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812 cyg_tick_count_t *interval /* Current interval */ |
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813 ) |
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814 { |
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815 ((Cyg_Alarm *)alarm)->get_times( |
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816 (cyg_tick_count*)trigger, |
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817 (cyg_tick_count*)interval); |
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818 } |
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819 |
| 0 | 820 externC void cyg_alarm_enable( cyg_handle_t alarm ) |
| 821 { | |
| 822 ((Cyg_Alarm *)alarm)->enable(); | |
| 823 } | |
| 824 | |
| 825 externC void cyg_alarm_disable( cyg_handle_t alarm ) | |
| 826 { | |
| 827 ((Cyg_Alarm *)alarm)->disable(); | |
| 828 } | |
| 829 | |
| 830 /*---------------------------------------------------------------------------*/ | |
| 831 /* Mail boxes */ | |
| 832 | |
| 833 externC void cyg_mbox_create( | |
| 834 cyg_handle_t *handle, | |
| 835 cyg_mbox *mbox | |
| 836 ) | |
| 837 { | |
| 838 CYG_ASSERT_SIZES( cyg_mbox, Cyg_Mbox ); | |
| 839 | |
| 840 Cyg_Mbox *t = new((void *)mbox) Cyg_Mbox(); | |
| 841 t=t; | |
| 842 | |
| 843 CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" ); | |
| 844 *handle = (cyg_handle_t)mbox; | |
| 845 } | |
| 846 | |
| 847 externC void cyg_mbox_delete(cyg_handle_t mbox) | |
| 848 { | |
| 849 ((Cyg_Mbox *)mbox)->~Cyg_Mbox(); | |
| 850 } | |
| 851 | |
| 852 externC void *cyg_mbox_get(cyg_handle_t mbox) | |
| 853 { | |
| 854 return ((Cyg_Mbox *)mbox)->get(); | |
| 855 } | |
| 856 | |
| 857 #ifdef CYGFUN_KERNEL_THREADS_TIMER | |
| 858 void *cyg_mbox_timed_get( | |
| 859 cyg_handle_t mbox, | |
| 860 cyg_tick_count_t abstime | |
| 861 ) | |
| 862 { | |
| 863 return ((Cyg_Mbox *)mbox)->get(abstime); | |
| 864 } | |
| 865 #endif | |
| 866 | |
| 867 externC void *cyg_mbox_tryget(cyg_handle_t mbox) | |
| 868 { | |
| 869 return ((Cyg_Mbox *)mbox)->tryget(); | |
| 870 } | |
| 871 | |
| 872 externC void *cyg_mbox_peek_item(cyg_handle_t mbox) | |
| 873 { | |
| 874 return ((Cyg_Mbox *)mbox)->peek_item(); | |
| 875 } | |
| 876 | |
| 877 #ifdef CYGMFN_KERNEL_SYNCH_MBOXT_PUT_CAN_WAIT | |
| 878 externC cyg_bool_t cyg_mbox_put(cyg_handle_t mbox, void *item) | |
| 879 { | |
| 880 return ((Cyg_Mbox *)mbox)->put(item); | |
| 881 } | |
| 882 | |
| 883 #ifdef CYGFUN_KERNEL_THREADS_TIMER | |
| 884 externC cyg_bool_t cyg_mbox_timed_put( | |
| 885 cyg_handle_t mbox, | |
| 886 void *item, | |
| 887 cyg_tick_count_t abstime | |
| 888 ) | |
| 889 { | |
| 890 return ((Cyg_Mbox *)mbox)->put(item, abstime); | |
| 891 } | |
| 892 #endif | |
| 893 #endif | |
| 894 | |
| 895 externC cyg_bool_t cyg_mbox_tryput(cyg_handle_t mbox, void *item) | |
| 896 { | |
| 897 return ((Cyg_Mbox *)mbox)->tryput(item); | |
| 898 } | |
| 899 | |
| 900 externC cyg_count32 cyg_mbox_peek(cyg_handle_t mbox) | |
| 901 { | |
| 902 return ((Cyg_Mbox *)mbox)->peek(); | |
| 903 } | |
| 904 | |
| 905 externC cyg_bool_t cyg_mbox_waiting_to_get(cyg_handle_t mbox) | |
| 906 { | |
| 907 return ((Cyg_Mbox *)mbox)->waiting_to_get(); | |
| 908 } | |
| 909 | |
| 910 externC cyg_bool_t cyg_mbox_waiting_to_put(cyg_handle_t mbox) | |
| 911 { | |
| 912 return ((Cyg_Mbox *)mbox)->waiting_to_put(); | |
| 913 } | |
| 914 | |
| 915 | |
| 916 /*---------------------------------------------------------------------------*/ | |
| 917 /* Semaphores */ | |
| 918 | |
| 919 externC void cyg_semaphore_init( | |
| 920 cyg_sem_t *sem, /* Semaphore to init */ | |
| 2 | 921 cyg_count32 val /* Initial semaphore value */ |
| 0 | 922 ) |
| 923 { | |
| 924 CYG_ASSERT_SIZES( cyg_sem_t, Cyg_Counting_Semaphore ); | |
| 925 | |
| 926 Cyg_Counting_Semaphore *t = new((void *)sem) Cyg_Counting_Semaphore(val); | |
| 927 t=t; | |
| 928 } | |
| 929 | |
| 930 externC void cyg_semaphore_destroy( cyg_sem_t *sem ) | |
| 931 { | |
| 932 ((Cyg_Counting_Semaphore *)sem)->~Cyg_Counting_Semaphore(); | |
| 933 } | |
| 934 | |
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935 externC cyg_bool_t cyg_semaphore_wait( cyg_sem_t *sem ) |
| 0 | 936 { |
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937 return ((Cyg_Counting_Semaphore *)sem)->wait(); |
| 0 | 938 } |
| 939 | |
| 940 #ifdef CYGFUN_KERNEL_THREADS_TIMER | |
| 941 externC cyg_bool_t cyg_semaphore_timed_wait( | |
| 942 cyg_sem_t *sem, | |
| 943 cyg_tick_count_t abstime | |
| 944 ) | |
| 945 { | |
| 946 return ((Cyg_Counting_Semaphore *)sem)->wait(abstime); | |
| 947 } | |
| 948 #endif | |
| 949 | |
| 950 | |
| 951 externC int cyg_semaphore_trywait( cyg_sem_t *sem ) | |
| 952 { | |
| 953 return ((Cyg_Counting_Semaphore *)sem)->trywait(); | |
| 954 } | |
| 955 | |
| 956 externC void cyg_semaphore_post( cyg_sem_t *sem ) | |
| 957 { | |
| 958 ((Cyg_Counting_Semaphore *)sem)->post(); | |
| 959 } | |
| 960 | |
| 2 | 961 externC void cyg_semaphore_peek( cyg_sem_t *sem, cyg_count32 *val ) |
| 0 | 962 { |
| 963 CYG_CHECK_DATA_PTR( val, "Bad val parameter" ); | |
| 964 | |
| 965 *val = ((Cyg_Counting_Semaphore *)sem)->peek(); | |
| 966 } | |
| 967 | |
| 968 | |
| 969 /*---------------------------------------------------------------------------*/ | |
| 970 /* Flags */ | |
| 971 | |
| 972 void cyg_flag_init( | |
| 973 cyg_flag_t *flag /* Flag to init */ | |
| 974 ) | |
| 975 { | |
| 976 CYG_ASSERT_SIZES( cyg_flag_t, Cyg_Flag ); | |
| 977 CYG_ASSERT( | |
| 978 ( Cyg_Flag::AND == CYG_FLAG_WAITMODE_AND ) && | |
| 979 ( Cyg_Flag::OR == CYG_FLAG_WAITMODE_OR ) && | |
| 980 ( Cyg_Flag::CLR == CYG_FLAG_WAITMODE_CLR ), | |
| 981 "CYG_FLAG_WAITMODE_xxx definition != C++ Cyg_Flag::xxx" ); | |
| 982 | |
| 983 Cyg_Flag *t = new((void *)flag) Cyg_Flag(); | |
| 984 t=t; | |
| 985 } | |
| 986 | |
| 987 void cyg_flag_destroy( cyg_flag_t *flag ) | |
| 988 { | |
| 989 ((Cyg_Flag *)flag)->~Cyg_Flag(); | |
| 990 } | |
| 991 | |
| 992 void cyg_flag_setbits( cyg_flag_t *flag, cyg_flag_value_t value) | |
| 993 { | |
| 994 ((Cyg_Flag *)flag)->setbits( value ); | |
| 995 } | |
| 996 | |
| 997 void cyg_flag_maskbits( cyg_flag_t *flag, cyg_flag_value_t value) | |
| 998 { | |
| 999 ((Cyg_Flag *)flag)->maskbits( value ); | |
| 1000 } | |
| 1001 | |
| 1002 cyg_flag_value_t cyg_flag_wait( cyg_flag_t *flag, | |
| 1003 cyg_flag_value_t pattern, | |
| 1004 cyg_flag_mode_t mode ) | |
| 1005 { | |
| 1006 if ( 0 == pattern || 0 != (mode & ~3) ) | |
| 1007 return 0; | |
| 1008 return ((Cyg_Flag *)flag)->wait( pattern, mode ); | |
| 1009 | |
| 1010 } | |
| 1011 | |
| 1012 #ifdef CYGFUN_KERNEL_THREADS_TIMER | |
| 1013 cyg_flag_value_t cyg_flag_timed_wait( cyg_flag_t *flag, | |
| 1014 cyg_flag_value_t pattern, | |
| 1015 cyg_flag_mode_t mode, | |
| 1016 cyg_tick_count_t abstime ) | |
| 1017 { | |
| 1018 if ( 0 == pattern || 0 != (mode & ~3) ) | |
| 1019 return 0; | |
| 1020 return ((Cyg_Flag *)flag)->wait( pattern, mode, abstime ); | |
| 1021 | |
| 1022 } | |
| 1023 #endif | |
| 1024 | |
| 1025 cyg_flag_value_t cyg_flag_poll( cyg_flag_t *flag, | |
| 1026 cyg_flag_value_t pattern, | |
| 1027 cyg_flag_mode_t mode ) | |
| 1028 { | |
| 1029 if ( 0 == pattern || 0 != (mode & ~3) ) | |
| 1030 return 0; | |
| 1031 return ((Cyg_Flag *)flag)->poll( pattern, mode ); | |
| 1032 | |
| 1033 } | |
| 1034 | |
| 1035 cyg_flag_value_t cyg_flag_peek( cyg_flag_t *flag ) | |
| 1036 { | |
| 1037 return ((Cyg_Flag *)flag)->peek(); | |
| 1038 } | |
| 1039 | |
| 1040 cyg_bool_t cyg_flag_waiting( cyg_flag_t *flag ) | |
| 1041 { | |
| 1042 return ((Cyg_Flag *)flag)->waiting(); | |
| 1043 } | |
| 1044 | |
| 1045 /*---------------------------------------------------------------------------*/ | |
| 1046 /* Mutex */ | |
| 1047 | |
| 1048 externC void cyg_mutex_init( | |
| 1049 cyg_mutex_t *mutex /* Mutex to init */ | |
| 1050 ) | |
| 1051 { | |
| 1052 CYG_ASSERT_SIZES( cyg_mutex_t, Cyg_Mutex ); | |
| 1053 | |
| 1054 Cyg_Mutex *m = new((void *)mutex) Cyg_Mutex; | |
| 1055 | |
| 1056 m=m; | |
| 1057 } | |
| 1058 | |
| 1059 externC void cyg_mutex_destroy( cyg_mutex_t *mutex ) | |
| 1060 { | |
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1061 ((Cyg_Mutex *)mutex)->~Cyg_Mutex(); |
| 0 | 1062 } |
| 1063 | |
| 2 | 1064 externC cyg_bool_t cyg_mutex_lock( cyg_mutex_t *mutex ) |
| 0 | 1065 { |
| 2 | 1066 return ((Cyg_Mutex *)mutex)->lock(); |
| 0 | 1067 } |
| 1068 | |
| 1069 externC cyg_bool_t cyg_mutex_trylock( cyg_mutex_t *mutex ) | |
| 1070 { | |
| 1071 return ((Cyg_Mutex *)mutex)->trylock(); | |
| 1072 } | |
| 1073 | |
| 1074 externC void cyg_mutex_unlock( cyg_mutex_t *mutex ) | |
| 1075 { | |
| 1076 ((Cyg_Mutex *)mutex)->unlock(); | |
| 1077 } | |
| 1078 | |
| 2 | 1079 externC void cyg_mutex_release( cyg_mutex_t *mutex ) |
| 1080 { | |
| 1081 ((Cyg_Mutex *)mutex)->release(); | |
| 1082 } | |
| 1083 | |
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1084 #ifdef CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_CEILING |
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1085 externC void cyg_mutex_set_ceiling( |
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1086 cyg_mutex_t *mutex, |
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1087 cyg_priority_t priority ) |
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1088 { |
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1089 ((Cyg_Mutex *)mutex)->set_ceiling(priority); |
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1090 } |
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1091 #endif |
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1092 |
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1093 #ifdef CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_DYNAMIC |
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1094 externC void cyg_mutex_set_protocol( |
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1095 cyg_mutex_t *mutex, |
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1096 enum cyg_mutex_protocol protocol ) |
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1097 { |
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1098 ((Cyg_Mutex *)mutex)->set_protocol((Cyg_Mutex::cyg_protcol)protocol); |
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1099 } |
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1100 #endif |
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1101 |
| 0 | 1102 /*---------------------------------------------------------------------------*/ |
| 1103 /* Condition Variables */ | |
| 1104 | |
| 1105 externC void cyg_cond_init( | |
| 1106 cyg_cond_t *cond, /* condition variable to init */ | |
| 1107 cyg_mutex_t *mutex /* associated mutex */ | |
| 1108 ) | |
| 1109 { | |
| 1110 CYG_ASSERT_SIZES( cyg_cond_t, Cyg_Condition_Variable ); | |
| 1111 | |
| 1112 Cyg_Condition_Variable *t = new((void *)cond) Cyg_Condition_Variable( | |
| 1113 *(Cyg_Mutex *)mutex); | |
| 1114 t=t; | |
| 1115 } | |
| 1116 | |
| 1117 externC void cyg_cond_destroy( cyg_cond_t *cond ) | |
| 1118 { | |
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1119 ((Cyg_Condition_Variable *)cond)->~Cyg_Condition_Variable(); |
| 0 | 1120 } |
| 1121 | |
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1122 externC cyg_bool_t cyg_cond_wait( cyg_cond_t *cond ) |
| 0 | 1123 { |
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1124 return ((Cyg_Condition_Variable *)cond)->wait(); |
| 0 | 1125 } |
| 1126 | |
| 1127 externC void cyg_cond_signal( cyg_cond_t *cond ) | |
| 1128 { | |
| 1129 ((Cyg_Condition_Variable *)cond)->signal(); | |
| 1130 } | |
| 1131 | |
| 1132 externC void cyg_cond_broadcast( cyg_cond_t *cond ) | |
| 1133 { | |
| 1134 ((Cyg_Condition_Variable *)cond)->broadcast(); | |
| 1135 } | |
| 1136 | |
| 1137 #ifdef CYGMFN_KERNEL_SYNCH_CONDVAR_TIMED_WAIT | |
| 1138 externC cyg_bool_t cyg_cond_timed_wait( | |
| 1139 cyg_cond_t *cond, | |
| 1140 cyg_tick_count_t abstime | |
| 1141 ) | |
| 1142 { | |
| 1143 return ((Cyg_Condition_Variable *)cond)->wait(abstime); | |
| 1144 } | |
| 1145 | |
| 1146 #endif | |
| 1147 | |
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1148 /*---------------------------------------------------------------------------*/ |
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1149 /* Spinlocks */ |
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1150 |
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1151 externC void cyg_spinlock_init( |
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1152 cyg_spinlock_t *lock, /* spinlock to initialize */ |
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1153 cyg_bool_t locked /* init locked or unlocked */ |
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1154 ) |
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1155 { |
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1156 CYG_ASSERT_SIZES( cyg_spinlock_t, Cyg_SpinLock ); |
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1157 |
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1158 // Create the spinlock in cleared state |
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1159 Cyg_SpinLock *t = new((void *)lock) Cyg_SpinLock(); |
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1160 |
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1161 // If the lock is to start locked, then lock it now. |
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1162 if( locked ) |
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1163 t->spin(); |
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1164 } |
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1165 |
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1166 externC void cyg_spinlock_destroy( cyg_spinlock_t *lock ) |
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1167 { |
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1168 ((Cyg_SpinLock *)lock)->~Cyg_SpinLock(); |
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1169 } |
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1170 |
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1171 externC void cyg_spinlock_spin( cyg_spinlock_t *lock ) |
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1172 { |
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1173 ((Cyg_SpinLock *)lock)->spin(); |
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1174 } |
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1175 |
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1176 externC void cyg_spinlock_clear( cyg_spinlock_t *lock ) |
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1177 { |
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1178 ((Cyg_SpinLock *)lock)->clear(); |
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1179 } |
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1180 |
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1181 externC cyg_bool_t cyg_spinlock_try( cyg_spinlock_t *lock ) |
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1182 { |
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1183 return ((Cyg_SpinLock *)lock)->trylock(); |
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1184 } |
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1185 |
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1186 externC cyg_bool_t cyg_spinlock_test( cyg_spinlock_t *lock ) |
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1187 { |
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1188 return ((Cyg_SpinLock *)lock)->test(); |
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1189 } |
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1190 |
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1191 externC void cyg_spinlock_spin_intsave( cyg_spinlock_t *lock, |
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1192 cyg_addrword_t *istate ) |
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1193 { |
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1194 ((Cyg_SpinLock *)lock)->spin_intsave((CYG_INTERRUPT_STATE *)istate); |
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1195 } |
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1196 |
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1197 externC void cyg_spinlock_clear_intsave( cyg_spinlock_t *lock, |
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1198 cyg_addrword_t istate ) |
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1199 { |
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1200 ((Cyg_SpinLock *)lock)->clear_intsave((CYG_INTERRUPT_STATE)istate); |
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1201 } |
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1202 |
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1203 |
| 0 | 1204 // ------------------------------------------------------------------------- |
| 1205 // Check structure sizes. | |
| 1206 // This class and constructor get run automatically in debug versions | |
| 1207 // of the kernel and check that the structures configured in the C | |
| 1208 // code are the same size as the C++ classes they should match. | |
| 1209 | |
| 1210 #ifdef CYGPKG_INFRA_DEBUG | |
| 1211 | |
| 1212 class Cyg_Check_Structure_Sizes | |
| 1213 { | |
| 1214 int dummy; | |
| 1215 public: | |
| 1216 Cyg_Check_Structure_Sizes( int x ); | |
| 1217 | |
| 1218 }; | |
| 1219 | |
| 1220 #define CYG_CHECK_SIZES(cstruct, cxxstruct) \ | |
| 1221 if( sizeof(cstruct) != sizeof(cxxstruct) ) \ | |
| 1222 { \ | |
| 1223 char *fmt = "Size of C struct " #cstruct \ | |
| 1224 " != size of C++ struct " #cxxstruct ; \ | |
| 1225 CYG_TRACE2(1, fmt, sizeof(cstruct) , sizeof(cxxstruct) ); \ | |
| 1226 fail = true; \ | |
| 1227 fmt = fmt; \ | |
| 1228 } | |
| 1229 | |
| 1230 Cyg_Check_Structure_Sizes::Cyg_Check_Structure_Sizes(int x) | |
| 1231 { | |
| 1232 cyg_bool fail = false; | |
| 1233 | |
| 1234 dummy = x+1; | |
| 1235 | |
| 1236 CYG_CHECK_SIZES( cyg_thread, Cyg_Thread ); | |
| 1237 CYG_CHECK_SIZES( cyg_interrupt, Cyg_Interrupt ); | |
| 1238 CYG_CHECK_SIZES( cyg_counter, Cyg_Counter ); | |
| 1239 CYG_CHECK_SIZES( cyg_clock, Cyg_Clock ); | |
| 1240 CYG_CHECK_SIZES( cyg_alarm, Cyg_Alarm ); | |
| 1241 CYG_CHECK_SIZES( cyg_mbox, Cyg_Mbox ); | |
| 1242 CYG_CHECK_SIZES( cyg_sem_t, Cyg_Counting_Semaphore ); | |
| 1243 CYG_CHECK_SIZES( cyg_flag_t, Cyg_Flag ); | |
| 1244 CYG_CHECK_SIZES( cyg_mutex_t, Cyg_Mutex ); | |
| 1245 CYG_CHECK_SIZES( cyg_cond_t, Cyg_Condition_Variable ); | |
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1246 CYG_CHECK_SIZES( cyg_spinlock_t, Cyg_SpinLock ); |
| 0 | 1247 |
| 1248 CYG_ASSERT( !fail, "Size checks failed"); | |
| 1249 } | |
| 1250 | |
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1251 static Cyg_Check_Structure_Sizes cyg_kapi_check_structure_sizes(1); |
| 0 | 1252 |
| 1253 #endif | |
| 1254 | |
| 1255 | |
| 1256 // ------------------------------------------------------------------------- | |
| 1257 | |
| 1258 #endif | |
| 1259 // EOF common/kapi.cxx |