[1] | 1 | /* |
---|
| 2 | * pthread.h - pthread API |
---|
| 3 | * |
---|
| 4 | * Copyright (c) 2008,2009,2010,2011,2012 Ghassan Almaless |
---|
| 5 | * Copyright (c) 2011,2012 UPMC Sorbonne Universites |
---|
| 6 | * |
---|
| 7 | * This file is part of ALMOS. |
---|
| 8 | * |
---|
| 9 | * ALMOS is free software; you can redistribute it and/or modify it |
---|
| 10 | * under the terms of the GNU General Public License as published by |
---|
| 11 | * the Free Software Foundation; version 2.0 of the License. |
---|
| 12 | * |
---|
| 13 | * ALMOS is distributed in the hope that it will be useful, but |
---|
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
---|
| 16 | * General Public License for more details. |
---|
| 17 | * |
---|
| 18 | * You should have received a copy of the GNU General Public License |
---|
| 19 | * along with ALMOS; if not, write to the Free Software Foundation, |
---|
| 20 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
---|
| 21 | */ |
---|
| 22 | |
---|
| 23 | #ifndef _PTHREAD_H_ |
---|
| 24 | #define _PTHREAD_H_ |
---|
| 25 | |
---|
| 26 | #include <sys/types.h> |
---|
| 27 | #include <sched.h> |
---|
| 28 | #include <sys/list.h> |
---|
| 29 | #include <semaphore.h> |
---|
| 30 | |
---|
| 31 | /* START COPYING FROM KERNEL HEADER */ |
---|
| 32 | #define __PT_ATTR_DEFAULT 0x000 |
---|
| 33 | #define __PT_ATTR_DETACH 0x001 /* for compatiblity */ |
---|
| 34 | #define __PT_FORK_WILL_EXEC 0x001 /* for compatiblity */ |
---|
| 35 | #define __PT_FORK_USE_TARGET_CPU 0x002 /* for compatiblity */ |
---|
| 36 | #define __PT_ATTR_LEGACY_MASK 0x003 /* TODO: remove legacy attr issue*/ |
---|
| 37 | |
---|
| 38 | #define __PT_FORK_USE_AFFINITY 0x004 |
---|
| 39 | #define __PT_ATTR_MEM_PRIO 0x008 |
---|
| 40 | #define __PT_ATTR_INTERLEAVE_SEQ 0x010 |
---|
| 41 | #define __PT_ATTR_INTERLEAVE_ALL 0x020 |
---|
| 42 | #define __PT_ATTR_AUTO_MGRT 0x040 |
---|
| 43 | #define __PT_ATTR_AUTO_NXTT 0x080 |
---|
| 44 | #define __PT_ATTR_MEM_CID_RR 0x100 |
---|
| 45 | |
---|
| 46 | typedef struct |
---|
| 47 | { |
---|
| 48 | uint_t key; |
---|
| 49 | uint_t flags; |
---|
| 50 | uint_t sched_policy; |
---|
| 51 | uint_t inheritsched; |
---|
| 52 | void *stack_addr; |
---|
| 53 | size_t stack_size; |
---|
| 54 | void *entry_func; |
---|
| 55 | void *exit_func; |
---|
| 56 | void *arg1; |
---|
| 57 | void *arg2; |
---|
| 58 | void *sigreturn_func; |
---|
| 59 | void *sigstack_addr; |
---|
| 60 | size_t sigstack_size; |
---|
| 61 | struct sched_param sched_param; |
---|
| 62 | sint_t cid; |
---|
| 63 | sint_t cpu_lid; |
---|
| 64 | sint_t cpu_gid; |
---|
| 65 | uint_t tid; // kernel cookie can be used in debuggin userland |
---|
| 66 | pid_t pid; |
---|
| 67 | } pthread_attr_t; |
---|
| 68 | /* END COPYING FROM KERNEL HEADER */ |
---|
| 69 | |
---|
| 70 | /* Pthread related constants */ |
---|
| 71 | #define PTHREAD_THREADS_MAX 1024 |
---|
| 72 | #define PTHREAD_STACK_MIN 2*4096 |
---|
| 73 | #define PTHREAD_CREATE_DETACHED 1 |
---|
| 74 | #define PTHREAD_CREATE_JOINABLE 0 |
---|
| 75 | #define PTHREAD_EXPLICIT_SCHED 0 |
---|
| 76 | #define PTHREAD_INHERIT_SCHED 1 |
---|
| 77 | #define PTHREAD_SCOPE_SYSTEM 0 |
---|
| 78 | #define PTHREAD_SCOPE_PROCESS 1 |
---|
| 79 | #define PTHREAD_PROCESS_PRIVATE 0 |
---|
| 80 | #define PTHREAD_PROCESS_SHARED 1 |
---|
| 81 | #define SEM_VALUE_MAX PTHREAD_THREADS_MAX |
---|
| 82 | |
---|
| 83 | struct __shared_s |
---|
| 84 | { |
---|
| 85 | volatile uint_t mailbox __CACHELINE; |
---|
| 86 | struct list_entry list; |
---|
| 87 | int tid; |
---|
| 88 | void *arg; |
---|
| 89 | }; |
---|
| 90 | |
---|
| 91 | #define PTHREAD_KEYS_MAX 64 |
---|
| 92 | #define PTHREAD_DESTRUCTOR_ITERATIONS 32 |
---|
| 93 | |
---|
| 94 | enum{ |
---|
| 95 | __PT_TLS_SHARED = 0, |
---|
| 96 | __PT_TLS_ERRNO, |
---|
| 97 | __PT_TLS_COND_WAIT, |
---|
| 98 | __PT_TLS_LOCAL_HEAP, |
---|
| 99 | __PT_TLS_FORK_FLAGS, |
---|
| 100 | __PT_TLS_FORK_CPUID, |
---|
| 101 | __PT_TLS_VALUES_NR |
---|
| 102 | }; |
---|
| 103 | |
---|
| 104 | #define __pthread_tls_set(tls,index,val) |
---|
| 105 | #define __pthread_tls_get(tls,index) |
---|
| 106 | #define __pthread_tls_getlocation(tls,index) |
---|
| 107 | |
---|
| 108 | typedef struct __pthread_tls_s |
---|
| 109 | { |
---|
| 110 | int signature; |
---|
| 111 | pthread_attr_t attr; |
---|
| 112 | void *values_tbl[PTHREAD_KEYS_MAX]; |
---|
| 113 | uint_t tls_tbl[__PT_TLS_VALUES_NR]; |
---|
| 114 | }__pthread_tls_t; |
---|
| 115 | |
---|
| 116 | void __pthread_init(void); |
---|
| 117 | void __pthread_tls_init(__pthread_tls_t *tls); |
---|
| 118 | void __pthread_tls_destroy(void); |
---|
| 119 | void __pthread_keys_init(void); |
---|
| 120 | void __pthread_keys_destroy(void); |
---|
| 121 | void __pthread_barrier_init(void); |
---|
| 122 | |
---|
| 123 | #define __pthread_tls_seterrno(tls,errno) |
---|
| 124 | |
---|
| 125 | #define __PTHREAD_OBJECT_CREATED 0xA5B5 |
---|
| 126 | #define __PTHREAD_OBJECT_DESTROYED 0xB0A0B0A0 |
---|
| 127 | #define __PTHREAD_OBJECT_BUSY 0x5A5A5A5A |
---|
| 128 | #define __PTHREAD_OBJECT_FREE 0xC0A5C0A5 |
---|
| 129 | |
---|
| 130 | typedef unsigned long pthread_t; |
---|
| 131 | typedef unsigned long pthread_rwlock_t; |
---|
| 132 | typedef unsigned long pthread_rwlockattr_t; |
---|
| 133 | typedef unsigned long pthread_key_t; |
---|
| 134 | |
---|
| 135 | typedef struct |
---|
| 136 | { |
---|
| 137 | uint_t val __CACHELINE; |
---|
| 138 | }pthread_spinlock_t; |
---|
| 139 | |
---|
| 140 | #define PTHREAD_MUTEX_NORMAL 0 |
---|
| 141 | #define PTHREAD_MUTEX_RECURSIVE 1 |
---|
| 142 | #define PTHREAD_MUTEX_ERRORCHECK 2 |
---|
| 143 | #define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_NORMAL |
---|
| 144 | |
---|
| 145 | typedef struct |
---|
| 146 | { |
---|
| 147 | int scope; |
---|
| 148 | uint_t type; |
---|
| 149 | uint_t cntr; |
---|
| 150 | }pthread_mutexattr_t; |
---|
| 151 | |
---|
| 152 | typedef struct |
---|
| 153 | { |
---|
| 154 | sem_t sem; |
---|
| 155 | pthread_spinlock_t lock; |
---|
| 156 | volatile uint_t value __CACHELINE; |
---|
| 157 | uint_t waiting __CACHELINE; |
---|
| 158 | struct list_entry queue __CACHELINE; |
---|
| 159 | pthread_mutexattr_t attr __CACHELINE; |
---|
| 160 | }pthread_mutex_t; |
---|
| 161 | |
---|
| 162 | #define __MUTEX_INITIALIZER(_t) \ |
---|
| 163 | { \ |
---|
| 164 | .sem = 0, \ |
---|
| 165 | .lock = {.val = __PTHREAD_OBJECT_FREE}, \ |
---|
| 166 | .value = __PTHREAD_OBJECT_FREE, \ |
---|
| 167 | .waiting = 0, \ |
---|
| 168 | .queue = {.next = 0, .pred = 0}, \ |
---|
| 169 | .attr = {.type = (_t), .scope = PTHREAD_PROCESS_PRIVATE, .cntr = 0}\ |
---|
| 170 | } |
---|
| 171 | |
---|
| 172 | #define PTHREAD_MUTEX_INITIALIZER __MUTEX_INITIALIZER(PTHREAD_MUTEX_DEFAULT) |
---|
| 173 | #define PTHREAD_RECURSIVE_MUTEX_INITIALIZER __MUTEX_INITIALIZER(PTHREAD_MUTEX_RECURSIVE) |
---|
| 174 | #define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER __MUTEX_INITIALIZER(PTHREAD_MUTEX_ERRORCHECK) |
---|
| 175 | |
---|
| 176 | typedef struct |
---|
| 177 | { |
---|
| 178 | int scope; |
---|
| 179 | void *sysid; |
---|
| 180 | pthread_spinlock_t lock; |
---|
| 181 | uint_t count __CACHELINE; |
---|
| 182 | struct list_entry queue __CACHELINE; |
---|
| 183 | }pthread_cond_t; |
---|
| 184 | |
---|
| 185 | #define PTHREAD_COND_INITIALIZER \ |
---|
| 186 | { \ |
---|
| 187 | .scope = PTHREAD_PROCESS_PRIVATE, \ |
---|
| 188 | .lock = {.val = __PTHREAD_OBJECT_FREE}, \ |
---|
| 189 | .count = 0, \ |
---|
| 190 | .queue = {.next = 0, .pred = 0} \ |
---|
| 191 | } |
---|
| 192 | |
---|
| 193 | typedef struct |
---|
| 194 | { |
---|
| 195 | int lock; |
---|
| 196 | int state; |
---|
| 197 | }pthread_once_t; |
---|
| 198 | |
---|
| 199 | #define PTHREAD_BARRIER_SERIAL_THREAD 1 |
---|
| 200 | |
---|
| 201 | typedef struct |
---|
| 202 | { |
---|
| 203 | sint_t scope; |
---|
| 204 | }pthread_barrierattr_t; |
---|
| 205 | |
---|
| 206 | typedef struct |
---|
| 207 | { |
---|
| 208 | sint_t scope; |
---|
| 209 | }pthread_condattr_t; |
---|
| 210 | |
---|
| 211 | typedef struct |
---|
| 212 | { |
---|
| 213 | int scope; |
---|
| 214 | void *sysid; |
---|
| 215 | |
---|
| 216 | __cacheline_t cntr; |
---|
| 217 | __cacheline_t count; |
---|
| 218 | |
---|
| 219 | volatile __cacheline_t state[2]; |
---|
| 220 | |
---|
| 221 | union { |
---|
| 222 | uint_t phase; |
---|
| 223 | __cacheline_t pading; |
---|
| 224 | }; |
---|
| 225 | }pthread_barrier_t; |
---|
| 226 | |
---|
| 227 | #define PTHREAD_ONCE_INIT {.lock = 0, .state = 0} |
---|
| 228 | |
---|
| 229 | /** Pthread Attribute Modifiers */ |
---|
| 230 | int pthread_attr_init (pthread_attr_t *attr); |
---|
| 231 | int pthread_attr_destroy(pthread_attr_t *attr); |
---|
| 232 | int pthread_attr_setstacksize(pthread_attr_t *attr, unsigned int stacksize); |
---|
| 233 | int pthread_attr_getstacksize(pthread_attr_t *attr, size_t *stacksize); |
---|
| 234 | int pthread_attr_setstack(pthread_attr_t *attr, void *stackaddr, size_t stacksize); |
---|
| 235 | int pthread_attr_getstack(pthread_attr_t *attr, void **stackaddr, size_t *stacksize); |
---|
| 236 | int pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate); |
---|
| 237 | int pthread_attr_getdetachstate(const pthread_attr_t *attr, int *detachstate); |
---|
| 238 | int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy); |
---|
| 239 | int pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy); |
---|
| 240 | int pthread_attr_setschedparam(pthread_attr_t *attr, const struct sched_param *param); |
---|
| 241 | int pthread_attr_getschedparam(const pthread_attr_t *attr, struct sched_param *param); |
---|
| 242 | int pthread_attr_setinheritsched(pthread_attr_t *attr, int inherit); |
---|
| 243 | int pthread_attr_getinheritsched(const pthread_attr_t *attr, int *inherit); |
---|
| 244 | int pthread_attr_setscope(pthread_attr_t *attr, int scope); |
---|
| 245 | |
---|
| 246 | /** Thread Management */ |
---|
| 247 | void pthread_exit(void *retval); |
---|
| 248 | int pthread_create(pthread_t *thread, pthread_attr_t *attr, void *(*start_routine)(void *), void *arg); |
---|
| 249 | int pthread_join(pthread_t th, void **thread_return); |
---|
| 250 | int pthread_detach(pthread_t thread); |
---|
| 251 | int pthread_equal(pthread_t thread1,pthread_t thread2); |
---|
| 252 | int pthread_once(pthread_once_t *once_control, void (*init_routine) (void)); |
---|
| 253 | void pthread_yield(void); |
---|
| 254 | pthread_t pthread_self(void); |
---|
| 255 | |
---|
| 256 | /** Thread specific data */ |
---|
| 257 | int pthread_key_create(pthread_key_t *key, void (*destructor)(void*)); |
---|
| 258 | int pthread_key_delete(pthread_key_t key); |
---|
| 259 | int pthread_setspecific(pthread_key_t key, const void *value); |
---|
| 260 | void *pthread_getspecific(pthread_key_t key); |
---|
| 261 | |
---|
| 262 | /** SpinLock Sync Object */ |
---|
| 263 | int pthread_spin_init(pthread_spinlock_t *lock,int pshared); |
---|
| 264 | int pthread_spin_lock(pthread_spinlock_t *lock); |
---|
| 265 | int pthread_spin_trylock(pthread_spinlock_t *lock); |
---|
| 266 | int pthread_spin_unlock(pthread_spinlock_t *lock); |
---|
| 267 | int pthread_spin_destroy(pthread_spinlock_t *lock); |
---|
| 268 | |
---|
| 269 | /** Mutex Sync Object */ |
---|
| 270 | int pthread_mutexattr_destroy(pthread_mutexattr_t *attr); |
---|
| 271 | int pthread_mutexattr_init(pthread_mutexattr_t *attr); |
---|
| 272 | int pthread_mutexattr_setpshared(pthread_mutexattr_t *attr, int pshared); |
---|
| 273 | int pthread_mutexattr_getpshared(pthread_mutexattr_t *attr, int *pshared); |
---|
| 274 | int pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *type); |
---|
| 275 | int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type); |
---|
| 276 | int pthread_mutex_init (pthread_mutex_t *mutex, const pthread_mutexattr_t *attr); |
---|
| 277 | int pthread_mutex_lock(pthread_mutex_t *mutex); |
---|
| 278 | int pthread_mutex_trylock(pthread_mutex_t *mutex); |
---|
| 279 | int pthread_mutex_unlock(pthread_mutex_t *mutex); |
---|
| 280 | int pthread_mutex_destroy(pthread_mutex_t *mutex); |
---|
| 281 | |
---|
| 282 | /** Condition Variable Sync Object */ |
---|
| 283 | int pthread_cond_init(pthread_cond_t *cond, pthread_condattr_t *cond_attr); |
---|
| 284 | int pthread_condattr_setpshared(pthread_condattr_t *attr, int pshared); |
---|
| 285 | int pthread_condattr_getpshared(pthread_condattr_t *attr, int *pshared); |
---|
| 286 | int pthread_cond_signal(pthread_cond_t *cond); |
---|
| 287 | int pthread_cond_broadcast(pthread_cond_t *cond); |
---|
| 288 | int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex); |
---|
| 289 | int pthread_cond_destroy(pthread_cond_t *cond); |
---|
| 290 | |
---|
| 291 | /** Rread/Write Lock Sync Object */ |
---|
| 292 | int pthread_rwlock_init(pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *attr); |
---|
| 293 | int pthread_rwlock_wrlock(pthread_rwlock_t *rwlock); |
---|
| 294 | int pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock); |
---|
| 295 | int pthread_rwlock_rdlock(pthread_rwlock_t *rwlock); |
---|
| 296 | int pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock); |
---|
| 297 | int pthread_rwlock_unlock(pthread_rwlock_t *rwlock); |
---|
| 298 | int pthread_rwlock_destroy(pthread_rwlock_t *rwlock); |
---|
| 299 | |
---|
| 300 | /** Barrier Sync Object */ |
---|
| 301 | int pthread_barrierattr_destroy(pthread_barrierattr_t *attr); |
---|
| 302 | int pthread_barrierattr_init(pthread_barrierattr_t *attr); |
---|
| 303 | int pthread_barrierattr_getpshared(pthread_barrierattr_t *attr, int *scope); |
---|
| 304 | int pthread_barrierattr_setpshared(pthread_barrierattr_t *attr, int scope); |
---|
| 305 | int pthread_barrier_init (pthread_barrier_t *barrier, const pthread_barrierattr_t *attr, unsigned count); |
---|
| 306 | int pthread_barrier_wait (pthread_barrier_t *barrier); |
---|
| 307 | int pthread_barrier_destroy(pthread_barrier_t *barrier); |
---|
| 308 | |
---|
| 309 | |
---|
| 310 | /** POSIX-Like, Not Protable, Additional Operations */ |
---|
| 311 | #define PT_TRACE_OFF 0 |
---|
| 312 | #define PT_TRACE_ON 1 |
---|
| 313 | #define PT_SHOW_STATE 2 |
---|
| 314 | |
---|
| 315 | #define PT_FORK_DEFAULT __PT_ATTR_DEFAULT |
---|
| 316 | #define PT_FORK_WILL_EXEC __PT_FORK_WILL_EXEC |
---|
| 317 | #define PT_FORK_TARGET_CPU __PT_FORK_USE_TARGET_CPU |
---|
| 318 | #define PT_FORK_SET_AFFINITY __PT_FORK_USE_AFFINITY |
---|
| 319 | #define PT_ATTR_MEM_PRIO __PT_ATTR_MEM_PRIO |
---|
| 320 | #define PT_ATTR_AUTO_MGRT __PT_ATTR_AUTO_MGRT |
---|
| 321 | #define PT_ATTR_AUTO_NXTT __PT_ATTR_AUTO_NXTT |
---|
| 322 | #define PT_ATTR_INTERLEAVE_SEQ __PT_ATTR_INTERLEAVE_SEQ |
---|
| 323 | #define PT_ATTR_INTERLEAVE_ALL __PT_ATTR_INTERLEAVE_ALL |
---|
| 324 | #define PT_ATTR_MEM_CID_RR __PT_ATTR_MEM_CID_RR |
---|
| 325 | |
---|
| 326 | |
---|
| 327 | int pthread_migrate_np(pthread_attr_t *attr); |
---|
| 328 | int pthread_profiling_np(int cmd, pid_t pid, pthread_t tid); |
---|
| 329 | int pthread_attr_setflags_np(pthread_attr_t *attr, unsigned int flags, unsigned int *old); |
---|
| 330 | int pthread_attr_setcpuid_np(pthread_attr_t *attr, int cpu_id, int *old_cpu_id); |
---|
| 331 | int pthread_attr_getcpuid_np(int *cpu_id); |
---|
| 332 | int pthread_attr_setforkinfo_np(int flags); |
---|
| 333 | int pthread_attr_setforkcpuid_np(int cpu_id); |
---|
| 334 | int pthread_attr_getforkcpuid_np(int *cpu_id); |
---|
| 335 | |
---|
| 336 | |
---|
| 337 | extern pthread_mutex_t __printf_lock; |
---|
| 338 | extern uint_t ___dmsg_lock; |
---|
| 339 | extern uint_t ___dmsg_ok; |
---|
| 340 | |
---|
| 341 | #define printf_r(...) \ |
---|
| 342 | do{ \ |
---|
| 343 | pthread_mutex_lock(&__printf_lock); \ |
---|
| 344 | printf(__VA_ARGS__); \ |
---|
| 345 | pthread_mutex_unlock(&__printf_lock); \ |
---|
| 346 | }while(0) |
---|
| 347 | |
---|
| 348 | #define fprintf_r(x,...) \ |
---|
| 349 | do{ \ |
---|
| 350 | pthread_mutex_lock(&__printf_lock); \ |
---|
| 351 | fprintf((x), __VA_ARGS__); \ |
---|
| 352 | pthread_mutex_unlock(&__printf_lock); \ |
---|
| 353 | }while(0) |
---|
| 354 | |
---|
| 355 | #define dmsg_r(x,...) \ |
---|
| 356 | do{ \ |
---|
| 357 | if(___dmsg_ok){ \ |
---|
| 358 | cpu_spinlock_lock(&___dmsg_lock); \ |
---|
| 359 | fprintf((x), __VA_ARGS__); \ |
---|
| 360 | cpu_spinlock_unlock(&___dmsg_lock); \ |
---|
| 361 | } \ |
---|
| 362 | }while(0) |
---|
| 363 | |
---|
| 364 | #define dmsg(x,...) \ |
---|
| 365 | do{ \ |
---|
| 366 | if(___dmsg_ok){ \ |
---|
| 367 | fprintf((x), __VA_ARGS__); \ |
---|
| 368 | } \ |
---|
| 369 | }while(0) |
---|
| 370 | |
---|
| 371 | |
---|
| 372 | //////////////////////////////////////////////////////////////////// |
---|
| 373 | // Private Section // |
---|
| 374 | //////////////////////////////////////////////////////////////////// |
---|
| 375 | #undef __pthread_tls_set |
---|
| 376 | #define __pthread_tls_set(_tls,_indx,_val) do{(_tls)->tls_tbl[(_indx)] = (uint_t)(_val);}while(0) |
---|
| 377 | |
---|
| 378 | #undef __pthread_tls_get |
---|
| 379 | #define __pthread_tls_get(_tls,_indx) ((_tls)->tls_tbl[(_indx)]) |
---|
| 380 | |
---|
| 381 | #undef __pthread_tls_getlocation |
---|
| 382 | #define __pthread_tls_getlocation(_tls,_indx) (&(_tls)->tls_tbl[(_indx)]) |
---|
| 383 | |
---|
| 384 | #endif /* _PTHREAD_H_ */ |
---|