Mercurial > ecos-v2_0-branch
annotate packages/kernel/current/include/kapi.h @ 460:a65a4055f146
* src/common/kapi.cxx:
* include/kapi.h:
Added function cyg_thread_get_next(), cyg_thread_find() and
cyg_thread_get_info() to allow the current set of threads to be
enumerated, and per-thread information to be retrieved safely.
* doc/kernel.sgml: Documented new KAPI calls.
* src/common/thread.cxx: Zero unique_id in thread destructor so
that a stale thread pointer can be checked for validity.
* include/instrmnt.h:
Added cyg_instrument_state() to report the current state of an
instrumentation flag.
Moved ifdef for CYGDBG_KERNEL_INSTRUMENT_MSGS out of within FLAGS
ifdef. We can have messages without flags.
* src/instrmnt/meminst.cxx:
Added cyg_instrument_state() to report the current state of an
instrumentation flag.
Modified cyg_instrument_msg() in line with header and table
changes.
* host/instr/dump_instr.c:
* host/instr/instrument.sh:
* include/instrument_desc.h:
Added a final NULL element to the generated table in
instrument_desc.h to mark its end. Otherwise code that does not
have access to the table definition cannot find its end. Also
added ifdefs to allow instrument_desc.h to be used to acquire the
structure definition and table pointer.
| author | nickg |
|---|---|
| date | Thu, 12 Dec 2002 18:31:34 +0000 |
| parents | c0d53837cb68 |
| children |
| rev | line source |
|---|---|
| 0 | 1 #ifndef CYGONCE_KERNEL_KAPI_H |
| 2 #define CYGONCE_KERNEL_KAPI_H | |
| 3 | |
| 4 /*========================================================================== | |
| 5 // | |
| 2 | 6 // kapi.h |
| 0 | 7 // |
| 2 | 8 // Native API for Kernel |
| 0 | 9 // |
| 10 //========================================================================== | |
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11 //####ECOSGPLCOPYRIGHTBEGIN#### |
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12 // ------------------------------------------- |
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13 // This file is part of eCos, the Embedded Configurable Operating System. |
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14 // Copyright (C) 2002 Bart Veer |
| 460 | 15 // Copyright (C) 2002 Nick Garnett |
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16 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. |
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17 // |
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18 // eCos is free software; you can redistribute it and/or modify it under |
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19 // the terms of the GNU General Public License as published by the Free |
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20 // Software Foundation; either version 2 or (at your option) any later version. |
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21 // |
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22 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY |
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23 // WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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24 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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25 // for more details. |
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26 // |
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27 // You should have received a copy of the GNU General Public License along |
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28 // with eCos; if not, write to the Free Software Foundation, Inc., |
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29 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
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30 // |
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31 // As a special exception, if other files instantiate templates or use macros |
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32 // or inline functions from this file, or you compile this file and link it |
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33 // with other works to produce a work based on this file, this file does not |
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34 // by itself cause the resulting work to be covered by the GNU General Public |
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35 // License. However the source code for this file must still be made available |
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36 // in accordance with section (3) of the GNU General Public License. |
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37 // |
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38 // This exception does not invalidate any other reasons why a work based on |
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39 // this file might be covered by the GNU General Public License. |
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40 // |
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41 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. |
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42 // at http://sources.redhat.com/ecos/ecos-license/ |
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43 // ------------------------------------------- |
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44 //####ECOSGPLCOPYRIGHTEND#### |
| 0 | 45 //========================================================================== |
| 46 //#####DESCRIPTIONBEGIN#### | |
| 47 // | |
| 2 | 48 // Author(s): nickg, dsm |
| 49 // Contributors: nickg | |
| 50 // Date: 1998-03-02 | |
| 51 // Purpose: Native API for Kernel | |
| 52 // Description: This file describes the native API for using the kernel. | |
| 0 | 53 // It is essentially a set of C wrappers for the C++ class |
| 54 // member functions. | |
| 2 | 55 // Usage: #include <cyg/kernel/kapi.h> |
| 0 | 56 // |
| 57 //####DESCRIPTIONEND#### | |
| 58 // | |
| 59 //========================================================================*/ | |
| 60 | |
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61 #include <pkgconf/system.h> |
| 0 | 62 #include <pkgconf/kernel.h> |
| 63 | |
| 64 #ifdef CYGFUN_KERNEL_API_C | |
| 65 #include <cyg/infra/cyg_type.h> | |
| 66 | |
| 67 /*---------------------------------------------------------------------------*/ | |
| 68 | |
| 69 #ifdef __cplusplus | |
| 70 extern "C" { | |
| 71 #endif | |
| 72 | |
| 73 /*---------------------------------------------------------------------------*/ | |
| 74 /* The following are derived types, they may have different */ | |
| 75 /* definitions from these depending on configuration. */ | |
| 76 | |
| 2 | 77 typedef CYG_ADDRWORD cyg_addrword_t; /* May hold pointer or word */ |
| 78 typedef cyg_addrword_t cyg_handle_t; /* Object handle */ | |
| 79 typedef cyg_uint32 cyg_priority_t; /* type for priorities */ | |
| 80 typedef cyg_int32 cyg_code_t; /* type for various codes */ | |
| 81 typedef cyg_uint32 cyg_vector_t; /* Interrupt vector id */ | |
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82 typedef cyg_uint32 cyg_cpu_t; /* CPU id type */ |
| 0 | 83 |
| 2 | 84 typedef cyg_uint64 cyg_tick_count_t; |
| 0 | 85 |
| 86 typedef int cyg_bool_t; | |
| 87 | |
| 88 /* Exception handler function definition */ | |
| 89 typedef void cyg_exception_handler_t( | |
| 90 cyg_addrword_t data, | |
| 91 cyg_code_t exception_number, | |
| 92 cyg_addrword_t info | |
| 93 ); | |
| 94 | |
| 95 /*---------------------------------------------------------------------------*/ | |
| 96 struct cyg_thread; | |
| 97 typedef struct cyg_thread cyg_thread; | |
| 98 | |
| 99 struct cyg_interrupt; | |
| 100 typedef struct cyg_interrupt cyg_interrupt; | |
| 101 | |
| 102 struct cyg_counter; | |
| 103 typedef struct cyg_counter cyg_counter; | |
| 104 | |
| 105 struct cyg_clock; | |
| 106 typedef struct cyg_clock cyg_clock; | |
| 107 | |
| 108 struct cyg_alarm; | |
| 109 typedef struct cyg_alarm cyg_alarm; | |
| 110 | |
| 111 struct cyg_mbox; | |
| 112 typedef struct cyg_mbox cyg_mbox; | |
| 113 | |
| 114 struct cyg_sem_t; | |
| 115 typedef struct cyg_sem_t cyg_sem_t; | |
| 116 | |
| 117 struct cyg_flag_t; | |
| 118 typedef struct cyg_flag_t cyg_flag_t; | |
| 119 | |
| 120 struct cyg_mutex_t; | |
| 121 typedef struct cyg_mutex_t cyg_mutex_t; | |
| 122 | |
| 123 struct cyg_cond_t; | |
| 124 typedef struct cyg_cond_t cyg_cond_t; | |
| 125 | |
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126 struct cyg_spinlock_t; |
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127 typedef struct cyg_spinlock_t cyg_spinlock_t; |
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128 |
| 0 | 129 /*---------------------------------------------------------------------------*/ |
| 130 /* Scheduler operations */ | |
| 131 | |
| 132 /* Starts scheduler with created threads. Never returns. */ | |
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133 void cyg_scheduler_start(void) CYGBLD_ATTRIB_NORET; |
| 0 | 134 |
| 135 /* Lock and unlock the scheduler. When the scheduler is */ | |
| 136 /* locked thread preemption is disabled. */ | |
| 137 void cyg_scheduler_lock(void); | |
| 138 | |
| 139 void cyg_scheduler_unlock(void); | |
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140 |
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141 /* Just like 'cyg_scheduler_lock()', but never take the lock higher than 1 */ |
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142 /* Thus this call is safe even if the scheduler is already locked and a */ |
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143 /* subsequent call to 'cyg_scheduler_unlock()' will completely unlock. */ |
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144 void cyg_scheduler_safe_lock(void); |
| 0 | 145 |
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146 /* Read the scheduler lock value. */ |
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147 cyg_ucount32 cyg_scheduler_read_lock(void); |
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148 |
| 0 | 149 /*---------------------------------------------------------------------------*/ |
| 150 /* Thread operations */ | |
| 151 | |
| 152 typedef void cyg_thread_entry_t(cyg_addrword_t); | |
| 153 | |
| 154 void cyg_thread_create( | |
| 2 | 155 cyg_addrword_t sched_info, /* scheduling info (eg pri) */ |
| 0 | 156 cyg_thread_entry_t *entry, /* entry point function */ |
| 2 | 157 cyg_addrword_t entry_data, /* entry data */ |
| 0 | 158 char *name, /* optional thread name */ |
| 159 void *stack_base, /* stack base, NULL = alloc */ | |
| 160 cyg_ucount32 stack_size, /* stack size, 0 = default */ | |
| 161 cyg_handle_t *handle, /* returned thread handle */ | |
| 162 cyg_thread *thread /* put thread here */ | |
| 163 ); | |
| 164 | |
| 165 void cyg_thread_exit(void); | |
| 166 | |
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167 /* It may be necessary to arrange for the victim to run for it to disappear */ |
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168 cyg_bool_t cyg_thread_delete(cyg_handle_t thread); /* false if NOT deleted */ |
| 0 | 169 |
| 170 void cyg_thread_suspend(cyg_handle_t thread); | |
| 171 | |
| 172 void cyg_thread_resume(cyg_handle_t thread); | |
| 173 | |
| 174 void cyg_thread_kill(cyg_handle_t thread); | |
| 175 | |
| 2 | 176 void cyg_thread_release(cyg_handle_t thread); |
| 0 | 177 |
| 178 void cyg_thread_yield(void); | |
| 179 | |
| 180 cyg_handle_t cyg_thread_self(void); | |
| 181 | |
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182 cyg_handle_t cyg_thread_idle_thread(void); |
| 0 | 183 |
| 184 /* Priority manipulation */ | |
| 185 | |
| 186 void cyg_thread_set_priority(cyg_handle_t thread, cyg_priority_t priority ); | |
| 187 | |
| 188 cyg_priority_t cyg_thread_get_priority(cyg_handle_t thread); | |
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189 cyg_priority_t cyg_thread_get_current_priority(cyg_handle_t thread); |
| 0 | 190 |
| 191 /* Deadline scheduling control (optional) */ | |
| 192 | |
| 193 void cyg_thread_deadline_wait( | |
| 194 cyg_tick_count_t start_time, /* abs earliest start time */ | |
| 195 cyg_tick_count_t run_time, /* worst case execution time */ | |
| 196 cyg_tick_count_t deadline /* absolute deadline */ | |
| 197 ); | |
| 198 | |
| 199 void cyg_thread_delay(cyg_tick_count_t delay); | |
| 200 | |
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201 /* Stack information */ |
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202 cyg_addrword_t cyg_thread_get_stack_base(cyg_handle_t thread); |
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203 |
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204 cyg_uint32 cyg_thread_get_stack_size(cyg_handle_t thread); |
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205 |
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206 #ifdef CYGFUN_KERNEL_THREADS_STACK_MEASUREMENT |
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207 cyg_uint32 cyg_thread_measure_stack_usage(cyg_handle_t thread); |
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208 #endif |
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209 |
| 0 | 210 /*---------------------------------------------------------------------------*/ |
| 460 | 211 /* Thread enumeration and information */ |
| 212 | |
| 213 typedef struct | |
| 214 { | |
| 215 cyg_handle_t handle; | |
| 216 cyg_uint16 id; | |
| 217 cyg_uint32 state; | |
| 218 char *name; | |
| 219 cyg_priority_t set_pri; | |
| 220 cyg_priority_t cur_pri; | |
| 221 cyg_addrword_t stack_base; | |
| 222 cyg_uint32 stack_size; | |
| 223 cyg_uint32 stack_used; | |
| 224 } cyg_thread_info; | |
| 225 | |
| 226 cyg_bool_t cyg_thread_get_next( cyg_handle_t *thread, cyg_uint16 *id ); | |
| 227 | |
| 228 cyg_bool_t cyg_thread_get_info( cyg_handle_t thread, | |
| 229 cyg_uint16 id, | |
| 230 cyg_thread_info *info ); | |
| 231 | |
| 232 cyg_handle_t cyg_thread_find( cyg_uint16 id ); | |
| 233 | |
| 234 /*---------------------------------------------------------------------------*/ | |
| 2 | 235 /* Per-thread Data */ |
| 236 | |
| 237 #ifdef CYGVAR_KERNEL_THREADS_DATA | |
| 238 | |
| 239 cyg_ucount32 cyg_thread_new_data_index(void); | |
| 240 | |
| 241 void cyg_thread_free_data_index(cyg_ucount32 index); | |
| 242 | |
| 243 CYG_ADDRWORD cyg_thread_get_data(cyg_ucount32 index); | |
| 244 | |
| 245 CYG_ADDRWORD *cyg_thread_get_data_ptr(cyg_ucount32 index); | |
| 246 | |
| 247 void cyg_thread_set_data(cyg_ucount32 index, CYG_ADDRWORD data); | |
| 248 | |
| 249 #endif | |
| 250 | |
| 251 /*---------------------------------------------------------------------------*/ | |
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252 /* Thread destructors */ |
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253 |
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254 #ifdef CYGPKG_KERNEL_THREADS_DESTRUCTORS |
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255 |
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256 typedef void (*cyg_thread_destructor_fn)(cyg_addrword_t); |
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257 |
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258 cyg_bool_t cyg_thread_add_destructor( cyg_thread_destructor_fn fn, |
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259 cyg_addrword_t data ); |
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260 cyg_bool_t cyg_thread_rem_destructor( cyg_thread_destructor_fn fn, |
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261 cyg_addrword_t data ); |
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262 #endif |
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263 |
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264 /*---------------------------------------------------------------------------*/ |
| 0 | 265 /* Exception handling. */ |
| 266 | |
| 267 /* Replace current exception handler, this may apply to either the */ | |
| 268 /* current thread, or to a global exception handler. The exception */ | |
| 269 /* number may be ignored, or used to specify a particular handler. */ | |
| 270 | |
| 271 void cyg_exception_set_handler( | |
| 272 cyg_code_t exception_number, | |
| 273 cyg_exception_handler_t *new_handler, | |
| 274 cyg_addrword_t new_data, | |
| 275 cyg_exception_handler_t **old_handler, | |
| 276 cyg_addrword_t *old_data | |
| 277 ); | |
| 278 | |
| 279 /* Clear exception hander to default value */ | |
| 280 void cyg_exception_clear_handler( | |
| 281 cyg_code_t exception_number | |
| 282 ); | |
| 283 | |
| 284 /* Invoke exception handler */ | |
| 285 void cyg_exception_call_handler( | |
| 286 cyg_handle_t thread, | |
| 287 cyg_code_t exception_number, | |
| 2 | 288 cyg_addrword_t exception_info |
| 0 | 289 ); |
| 290 | |
| 291 | |
| 292 /*---------------------------------------------------------------------------*/ | |
| 293 /* Interrupt handling */ | |
| 294 typedef void cyg_VSR_t(void); | |
| 295 typedef cyg_uint32 cyg_ISR_t(cyg_vector_t vector, cyg_addrword_t data); | |
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296 typedef void cyg_DSR_t( cyg_vector_t vector, |
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297 cyg_ucount32 count, |
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298 cyg_addrword_t data); |
| 0 | 299 |
| 300 | |
| 301 enum cyg_ISR_results | |
| 302 { | |
| 303 CYG_ISR_HANDLED = 1, /* Interrupt was handled */ | |
| 304 CYG_ISR_CALL_DSR = 2 /* Schedule DSR */ | |
| 305 }; | |
| 306 | |
| 307 void cyg_interrupt_create( | |
| 308 cyg_vector_t vector, /* Vector to attach to */ | |
| 309 cyg_priority_t priority, /* Queue priority */ | |
| 2 | 310 cyg_addrword_t data, /* Data pointer */ |
| 0 | 311 cyg_ISR_t *isr, /* Interrupt Service Routine */ |
| 312 cyg_DSR_t *dsr, /* Deferred Service Routine */ | |
| 313 cyg_handle_t *handle, /* returned handle */ | |
| 314 cyg_interrupt *intr /* put interrupt here */ | |
| 315 ); | |
| 316 | |
| 317 void cyg_interrupt_delete( cyg_handle_t interrupt ); | |
| 318 | |
| 319 void cyg_interrupt_attach( cyg_handle_t interrupt ); | |
| 320 | |
| 321 void cyg_interrupt_detach( cyg_handle_t interrupt ); | |
| 322 | |
| 323 /* VSR manipulation */ | |
| 324 | |
| 325 void cyg_interrupt_get_vsr( | |
| 326 cyg_vector_t vector, /* vector to get */ | |
| 327 cyg_VSR_t **vsr /* vsr got */ | |
| 328 ); | |
| 329 | |
| 330 void cyg_interrupt_set_vsr( | |
| 331 cyg_vector_t vector, /* vector to set */ | |
| 332 cyg_VSR_t *vsr /* vsr to set */ | |
| 333 ); | |
| 334 | |
| 335 /* CPU level interrupt mask */ | |
| 336 void cyg_interrupt_disable(void); | |
| 337 | |
| 338 void cyg_interrupt_enable(void); | |
| 339 | |
| 340 /* Interrupt controller access */ | |
| 341 void cyg_interrupt_mask(cyg_vector_t vector); | |
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342 void cyg_interrupt_mask_intunsafe(cyg_vector_t vector); |
| 0 | 343 |
| 344 void cyg_interrupt_unmask(cyg_vector_t vector); | |
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345 void cyg_interrupt_unmask_intunsafe(cyg_vector_t vector); |
| 0 | 346 |
| 347 void cyg_interrupt_acknowledge(cyg_vector_t vector); | |
| 348 | |
| 349 void cyg_interrupt_configure( | |
| 350 cyg_vector_t vector, /* vector to configure */ | |
| 351 cyg_bool_t level, /* level or edge triggered */ | |
| 352 cyg_bool_t up /* rising/faling edge, high/low level*/ | |
| 353 ); | |
| 354 | |
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355 void cyg_interrupt_set_cpu( |
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356 cyg_vector_t vector, /* vector to control */ |
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357 cyg_cpu_t cpu /* CPU to set */ |
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358 ); |
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359 |
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360 cyg_cpu_t cyg_interrupt_get_cpu( |
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361 cyg_vector_t vector /* vector to control */ |
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362 ); |
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363 |
| 0 | 364 /*---------------------------------------------------------------------------*/ |
| 365 /* Counters, Clocks and Alarms */ | |
| 366 | |
| 367 void cyg_counter_create( | |
| 368 cyg_handle_t *handle, /* returned counter handle */ | |
| 369 cyg_counter *counter /* put counter here */ | |
| 370 ); | |
| 371 | |
| 372 void cyg_counter_delete(cyg_handle_t counter); | |
| 373 | |
| 374 /* Return current value of counter */ | |
| 375 cyg_tick_count_t cyg_counter_current_value(cyg_handle_t counter); | |
| 376 | |
| 377 /* Set new current value */ | |
| 378 void cyg_counter_set_value( | |
| 379 cyg_handle_t counter, | |
| 380 cyg_tick_count_t new_value | |
| 381 ); | |
| 382 | |
| 383 /* Advance counter by one tick */ | |
| 384 void cyg_counter_tick(cyg_handle_t counter); | |
| 385 | |
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386 /* Advance counter by multiple ticks */ |
| 215 | 387 void cyg_counter_multi_tick(cyg_handle_t counter, cyg_tick_count_t _ticks); |
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388 |
| 0 | 389 |
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390 #define CYG_RESOLUTION_T_MEMBERS \ |
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391 cyg_uint32 dividend; \ |
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392 cyg_uint32 divisor; |
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393 |
| 0 | 394 typedef struct |
| 395 { | |
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396 CYG_RESOLUTION_T_MEMBERS |
| 0 | 397 } cyg_resolution_t; |
| 398 | |
| 399 /* Create a clock object */ | |
| 400 void cyg_clock_create( | |
| 401 cyg_resolution_t resolution, /* Initial resolution */ | |
| 402 cyg_handle_t *handle, /* Returned clock handle */ | |
| 403 cyg_clock *clock /* put clock here */ | |
| 404 ); | |
| 405 | |
| 406 void cyg_clock_delete(cyg_handle_t clock); | |
| 407 | |
| 408 /* convert a clock handle to a counter handle so we can use the */ | |
| 409 /* counter API on it. */ | |
| 410 void cyg_clock_to_counter( | |
| 411 cyg_handle_t clock, | |
| 412 cyg_handle_t *counter | |
| 413 ); | |
| 414 | |
| 415 void cyg_clock_set_resolution( | |
| 416 cyg_handle_t clock, | |
| 417 cyg_resolution_t resolution /* New resolution */ | |
| 418 ); | |
| 419 | |
| 420 cyg_resolution_t cyg_clock_get_resolution(cyg_handle_t clock); | |
| 421 | |
| 422 /* handle of real time clock */ | |
| 423 cyg_handle_t cyg_real_time_clock(void); | |
| 424 | |
| 425 /* returns value of real time clock's counter. | |
| 426 This is the same as: | |
| 427 (cyg_clock_to_counter(cyg_real_time_clock(), &h), | |
| 428 cyg_counter_current_value(h)) */ | |
| 429 cyg_tick_count_t cyg_current_time(void); | |
| 430 | |
| 431 /* Alarm handler function */ | |
| 432 typedef void cyg_alarm_t(cyg_handle_t alarm, cyg_addrword_t data); | |
| 433 | |
| 434 void cyg_alarm_create( | |
| 435 cyg_handle_t counter, /* Attached to this counter */ | |
| 436 cyg_alarm_t *alarmfn, /* Call-back function */ | |
| 2 | 437 cyg_addrword_t data, /* Call-back data */ |
| 0 | 438 cyg_handle_t *handle, /* Returned alarm object */ |
| 439 cyg_alarm *alarm /* put alarm here */ | |
| 440 ); | |
| 441 | |
| 442 /* Disable alarm, detach from counter and invalidate handles */ | |
| 443 void cyg_alarm_delete( cyg_handle_t alarm); | |
| 444 | |
| 445 void cyg_alarm_initialize( | |
| 446 cyg_handle_t alarm, | |
| 447 cyg_tick_count_t trigger, /* Absolute trigger time */ | |
| 448 cyg_tick_count_t interval /* Relative retrigger interval */ | |
| 449 ); | |
| 450 | |
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451 void cyg_alarm_get_times( |
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452 cyg_handle_t alarm, |
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453 cyg_tick_count_t *trigger, /* Next trigger time */ |
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454 cyg_tick_count_t *interval /* Current interval */ |
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455 ); |
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456 |
| 0 | 457 void cyg_alarm_enable( cyg_handle_t alarm ); |
| 458 | |
| 459 void cyg_alarm_disable( cyg_handle_t alarm ); | |
| 460 | |
| 461 /*---------------------------------------------------------------------------*/ | |
| 462 /* Mail boxes */ | |
| 463 void cyg_mbox_create( | |
| 464 cyg_handle_t *handle, | |
| 465 cyg_mbox *mbox | |
| 466 ); | |
| 467 | |
| 468 void cyg_mbox_delete(cyg_handle_t mbox); | |
| 469 | |
| 470 void *cyg_mbox_get(cyg_handle_t mbox); | |
| 471 | |
| 472 #ifdef CYGFUN_KERNEL_THREADS_TIMER | |
| 473 void *cyg_mbox_timed_get( | |
| 474 cyg_handle_t mbox, | |
| 475 cyg_tick_count_t abstime | |
| 476 ); | |
| 477 #endif | |
| 478 | |
| 479 void *cyg_mbox_tryget(cyg_handle_t mbox); | |
| 480 | |
| 481 void *cyg_mbox_peek_item(cyg_handle_t mbox); | |
| 482 | |
| 483 #ifdef CYGMFN_KERNEL_SYNCH_MBOXT_PUT_CAN_WAIT | |
| 484 cyg_bool_t cyg_mbox_put(cyg_handle_t mbox, void *item); | |
| 485 #ifdef CYGFUN_KERNEL_THREADS_TIMER | |
| 486 cyg_bool_t cyg_mbox_timed_put( | |
| 487 cyg_handle_t mbox, | |
| 488 void *item, | |
| 489 cyg_tick_count_t abstime | |
| 490 ); | |
| 491 #endif | |
| 492 #endif | |
| 493 | |
| 494 cyg_bool_t cyg_mbox_tryput(cyg_handle_t mbox, void *item); | |
| 495 | |
| 496 cyg_count32 cyg_mbox_peek(cyg_handle_t mbox); | |
| 497 | |
| 498 cyg_bool_t cyg_mbox_waiting_to_get(cyg_handle_t mbox); | |
| 499 | |
| 500 cyg_bool_t cyg_mbox_waiting_to_put(cyg_handle_t mbox); | |
| 501 | |
| 502 | |
| 503 /*-----------------------------------------------------------------------*/ | |
| 504 /* Memory pools */ | |
| 505 | |
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506 /* These definitions are found in the "memalloc" package as this is */ |
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507 /* where the implementation lives. */ |
| 0 | 508 |
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509 #ifdef CYGPKG_MEMALLOC |
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510 # include <cyg/memalloc/kapi.h> |
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511 #endif |
| 0 | 512 |
| 513 /*---------------------------------------------------------------------------*/ | |
| 514 /* Semaphores */ | |
| 515 | |
| 516 void cyg_semaphore_init( | |
| 517 cyg_sem_t *sem, /* Semaphore to init */ | |
| 2 | 518 cyg_count32 val /* Initial semaphore value */ |
| 0 | 519 ); |
| 520 | |
| 521 void cyg_semaphore_destroy( cyg_sem_t *sem ); | |
| 522 | |
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523 cyg_bool_t cyg_semaphore_wait( cyg_sem_t *sem ); |
| 0 | 524 |
| 525 #ifdef CYGFUN_KERNEL_THREADS_TIMER | |
| 526 cyg_bool_t cyg_semaphore_timed_wait( | |
| 527 cyg_sem_t *sem, | |
| 528 cyg_tick_count_t abstime | |
| 529 ); | |
| 530 #endif | |
| 531 | |
| 532 cyg_bool_t cyg_semaphore_trywait( cyg_sem_t *sem ); | |
| 533 | |
| 534 void cyg_semaphore_post( cyg_sem_t *sem ); | |
| 535 | |
| 2 | 536 void cyg_semaphore_peek( cyg_sem_t *sem, cyg_count32 *val ); |
| 0 | 537 |
| 538 /*---------------------------------------------------------------------------*/ | |
| 539 /* Flags */ | |
| 540 | |
| 541 typedef cyg_uint32 cyg_flag_value_t; | |
| 542 typedef cyg_uint8 cyg_flag_mode_t; | |
| 543 #define CYG_FLAG_WAITMODE_AND ((cyg_flag_mode_t)0) /* all bits must be set */ | |
| 544 #define CYG_FLAG_WAITMODE_OR ((cyg_flag_mode_t)2) /* any bit must be set */ | |
| 545 #define CYG_FLAG_WAITMODE_CLR ((cyg_flag_mode_t)1) /* clear when satisfied */ | |
| 546 | |
| 547 void cyg_flag_init( | |
| 548 cyg_flag_t *flag /* Flag to init */ | |
| 549 ); | |
| 550 | |
| 551 void cyg_flag_destroy( cyg_flag_t *flag ); | |
| 552 | |
| 553 /* bitwise-or in the bits in value; awaken any waiting tasks whose | |
| 554 condition is now satisfied */ | |
| 555 void cyg_flag_setbits( cyg_flag_t *flag, cyg_flag_value_t value); | |
| 556 | |
| 557 /* bitwise-and with the the bits in value; this clears the bits which | |
| 558 are not set in value. No waiting task can be awoken. */ | |
| 559 void cyg_flag_maskbits( cyg_flag_t *flag, cyg_flag_value_t value); | |
| 560 | |
| 561 /* wait for the flag value to match the pattern, according to the mode. | |
| 562 If mode includes CLR, set the flag value to zero when | |
| 563 our pattern is matched. The return value is that which matched | |
| 564 the request, or zero for an error/timeout return. | |
| 565 Value must not itself be zero. */ | |
| 566 cyg_flag_value_t cyg_flag_wait( cyg_flag_t *flag, | |
| 567 cyg_flag_value_t pattern, | |
| 568 cyg_flag_mode_t mode ); | |
| 569 | |
| 570 #ifdef CYGFUN_KERNEL_THREADS_TIMER | |
| 571 cyg_flag_value_t cyg_flag_timed_wait( cyg_flag_t *flag, | |
| 572 cyg_flag_value_t pattern, | |
| 573 cyg_flag_mode_t mode, | |
| 574 cyg_tick_count_t abstime ); | |
| 575 | |
| 576 #endif | |
| 577 | |
| 578 cyg_flag_value_t cyg_flag_poll( cyg_flag_t *flag, | |
| 579 cyg_flag_value_t pattern, | |
| 580 cyg_flag_mode_t mode ); | |
| 581 | |
| 582 cyg_flag_value_t cyg_flag_peek( cyg_flag_t *flag ); | |
| 583 | |
| 584 cyg_bool_t cyg_flag_waiting( cyg_flag_t *flag ); | |
| 585 | |
| 586 /*---------------------------------------------------------------------------*/ | |
| 587 /* Mutex */ | |
| 588 | |
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589 #ifdef CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_DYNAMIC |
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590 enum cyg_mutex_protocol |
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591 { |
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592 CYG_MUTEX_NONE = 0, // no inversion protocol |
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593 CYG_MUTEX_INHERIT, // priority inheritance protocol |
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594 CYG_MUTEX_CEILING // priority ceiling protocol |
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595 }; |
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596 #endif |
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597 |
| 0 | 598 void cyg_mutex_init( |
| 599 cyg_mutex_t *mutex /* Mutex to init */ | |
| 600 ); | |
| 601 | |
| 602 void cyg_mutex_destroy( cyg_mutex_t *mutex ); | |
| 603 | |
| 2 | 604 cyg_bool_t cyg_mutex_lock( cyg_mutex_t *mutex ); |
| 0 | 605 |
| 606 cyg_bool_t cyg_mutex_trylock( cyg_mutex_t *mutex ); | |
| 607 | |
| 608 void cyg_mutex_unlock( cyg_mutex_t *mutex ); | |
| 609 | |
| 2 | 610 void cyg_mutex_release( cyg_mutex_t *mutex ); |
| 611 | |
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612 #ifdef CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_CEILING |
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613 void cyg_mutex_set_ceiling( cyg_mutex_t *mutex, cyg_priority_t priority ); |
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614 #endif |
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615 |
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616 #ifdef CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_DYNAMIC |
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617 void cyg_mutex_set_protocol ( cyg_mutex_t *mutex, enum cyg_mutex_protocol protocol ); |
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618 #endif |
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619 |
| 0 | 620 /*---------------------------------------------------------------------------*/ |
| 621 /* Condition Variables */ | |
| 622 | |
| 623 void cyg_cond_init( | |
| 624 cyg_cond_t *cond, /* condition variable to init */ | |
| 625 cyg_mutex_t *mutex /* associated mutex */ | |
| 626 ); | |
| 627 | |
| 628 void cyg_cond_destroy( cyg_cond_t *cond ); | |
| 629 | |
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630 cyg_bool_t cyg_cond_wait( cyg_cond_t *cond ); |
| 0 | 631 |
| 632 void cyg_cond_signal( cyg_cond_t *cond ); | |
| 633 | |
| 634 void cyg_cond_broadcast( cyg_cond_t *cond ); | |
| 635 | |
| 636 #ifdef CYGMFN_KERNEL_SYNCH_CONDVAR_TIMED_WAIT | |
| 637 cyg_bool_t cyg_cond_timed_wait( | |
| 638 cyg_cond_t *cond, | |
| 639 cyg_tick_count_t abstime | |
| 640 ); | |
| 641 #endif | |
| 642 | |
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643 /*---------------------------------------------------------------------------*/ |
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644 /* Spinlocks */ |
| 0 | 645 |
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646 void cyg_spinlock_init( |
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647 cyg_spinlock_t *lock, /* spinlock to initialize */ |
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648 cyg_bool_t locked /* init locked or unlocked */ |
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649 ); |
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650 |
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651 void cyg_spinlock_destroy( cyg_spinlock_t *lock ); |
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652 |
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653 void cyg_spinlock_spin( cyg_spinlock_t *lock ); |
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654 |
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655 void cyg_spinlock_clear( cyg_spinlock_t *lock ); |
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656 |
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657 cyg_bool_t cyg_spinlock_try( cyg_spinlock_t *lock ); |
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658 |
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659 cyg_bool_t cyg_spinlock_test( cyg_spinlock_t *lock ); |
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660 |
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661 void cyg_spinlock_spin_intsave( cyg_spinlock_t *lock, |
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662 cyg_addrword_t *istate ); |
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663 |
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664 void cyg_spinlock_clear_intsave( cyg_spinlock_t *lock, |
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665 cyg_addrword_t istate ); |
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666 |
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667 /*---------------------------------------------------------------------------*/ |
| 0 | 668 #ifdef __cplusplus |
| 669 } | |
| 670 #endif | |
| 671 | |
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672 /*---------------------------------------------------------------------------*/ |
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673 |
| 0 | 674 #include <cyg/kernel/kapidata.h> |
| 675 | |
| 676 /*---------------------------------------------------------------------------*/ | |
| 677 /* EOF kapi.h */ | |
| 678 #endif /* CYGFUN_KERNEL_API_C */ | |
| 679 #endif /* CYGONCE_KERNEL_KAPI_H */ |