| thr_create.c (114664) | thr_create.c (115278) |
|---|---|
| 1/* 2 * Copyright (c) 2003 Daniel M. Eischen <deischen@gdeb.com> 3 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 16 unchanged lines hidden (view full) --- 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * | 1/* 2 * Copyright (c) 2003 Daniel M. Eischen <deischen@gdeb.com> 3 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 16 unchanged lines hidden (view full) --- 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * |
| 33 * $FreeBSD: head/lib/libkse/thread/thr_create.c 114664 2003-05-04 16:17:01Z deischen $ | 33 * $FreeBSD: head/lib/libkse/thread/thr_create.c 115278 2003-05-24 02:29:25Z deischen $ |
| 34 */ 35#include <errno.h> 36#include <stdlib.h> 37#include <string.h> 38#include <fcntl.h> 39#include <unistd.h> 40#include <stddef.h> 41#include <sys/time.h> 42#include <machine/reg.h> 43#include <pthread.h> 44#include "thr_private.h" 45#include "libc_private.h" 46 | 34 */ 35#include <errno.h> 36#include <stdlib.h> 37#include <string.h> 38#include <fcntl.h> 39#include <unistd.h> 40#include <stddef.h> 41#include <sys/time.h> 42#include <machine/reg.h> 43#include <pthread.h> 44#include "thr_private.h" 45#include "libc_private.h" 46 |
| 47static u_int64_t next_uniqueid = 1; 48 | |
| 49#define OFF(f) offsetof(struct pthread, f) 50int _thread_next_offset = OFF(tle.tqe_next); 51int _thread_uniqueid_offset = OFF(uniqueid); 52int _thread_state_offset = OFF(state); 53int _thread_name_offset = OFF(name); 54int _thread_ctx_offset = OFF(tmbx.tm_context); 55#undef OFF 56 --- 83 unchanged lines hidden (view full) --- 140 ret = EAGAIN; 141 _thr_free(curthread, new_thread); 142 } 143 else if (((new_thread->attr.flags & PTHREAD_SCOPE_SYSTEM) != 0) && 144 (((kse = _kse_alloc(curthread)) == NULL) 145 || ((kseg = _kseg_alloc(curthread)) == NULL))) { 146 /* Insufficient memory to create a new KSE/KSEG: */ 147 ret = EAGAIN; | 47#define OFF(f) offsetof(struct pthread, f) 48int _thread_next_offset = OFF(tle.tqe_next); 49int _thread_uniqueid_offset = OFF(uniqueid); 50int _thread_state_offset = OFF(state); 51int _thread_name_offset = OFF(name); 52int _thread_ctx_offset = OFF(tmbx.tm_context); 53#undef OFF 54 --- 83 unchanged lines hidden (view full) --- 138 ret = EAGAIN; 139 _thr_free(curthread, new_thread); 140 } 141 else if (((new_thread->attr.flags & PTHREAD_SCOPE_SYSTEM) != 0) && 142 (((kse = _kse_alloc(curthread)) == NULL) 143 || ((kseg = _kseg_alloc(curthread)) == NULL))) { 144 /* Insufficient memory to create a new KSE/KSEG: */ 145 ret = EAGAIN; |
| 148 if (kse != NULL) | 146#ifndef KMF_DONE 147#define KMF_DONE 0x04 148#endif 149 if (kse != NULL) { 150 kse->k_mbx.km_flags |= KMF_DONE; |
| 149 _kse_free(curthread, kse); | 151 _kse_free(curthread, kse); |
| 152 } |
|
| 150 if ((new_thread->attr.flags & THR_STACK_USER) == 0) { 151 crit = _kse_critical_enter(); 152 curkse = _get_curkse(); 153 KSE_LOCK_ACQUIRE(curkse, &_thread_list_lock); 154 /* Stack routines don't use malloc/free. */ 155 _thr_stack_free(&new_thread->attr); 156 KSE_LOCK_RELEASE(curkse, &_thread_list_lock); 157 _kse_critical_leave(crit); 158 } 159 _thr_free(curthread, new_thread); 160 } 161 else { 162 if (kseg != NULL) { 163 /* Add the KSE to the KSEG's list of KSEs. */ | 153 if ((new_thread->attr.flags & THR_STACK_USER) == 0) { 154 crit = _kse_critical_enter(); 155 curkse = _get_curkse(); 156 KSE_LOCK_ACQUIRE(curkse, &_thread_list_lock); 157 /* Stack routines don't use malloc/free. */ 158 _thr_stack_free(&new_thread->attr); 159 KSE_LOCK_RELEASE(curkse, &_thread_list_lock); 160 _kse_critical_leave(crit); 161 } 162 _thr_free(curthread, new_thread); 163 } 164 else { 165 if (kseg != NULL) { 166 /* Add the KSE to the KSEG's list of KSEs. */ |
| 164 TAILQ_INSERT_HEAD(&kseg->kg_kseq, kse, k_qe); | 167 TAILQ_INSERT_HEAD(&kseg->kg_kseq, kse, k_kgqe); 168 kseg->kg_ksecount = 1; |
| 165 kse->k_kseg = kseg; 166 kse->k_schedq = &kseg->kg_schedq; 167 } 168 /* 169 * Write a magic value to the thread structure 170 * to help identify valid ones: 171 */ 172 new_thread->magic = THR_MAGIC; --- 108 unchanged lines hidden (view full) --- 281 kse->k_kseg->kg_flags |= KGF_SINGLE_THREAD; 282#endif 283 new_thread->kse = kse; 284 new_thread->kseg = kse->k_kseg; 285 kse->k_mbx.km_udata = kse; 286 kse->k_mbx.km_curthread = NULL; 287 } 288 | 169 kse->k_kseg = kseg; 170 kse->k_schedq = &kseg->kg_schedq; 171 } 172 /* 173 * Write a magic value to the thread structure 174 * to help identify valid ones: 175 */ 176 new_thread->magic = THR_MAGIC; --- 108 unchanged lines hidden (view full) --- 285 kse->k_kseg->kg_flags |= KGF_SINGLE_THREAD; 286#endif 287 new_thread->kse = kse; 288 new_thread->kseg = kse->k_kseg; 289 kse->k_mbx.km_udata = kse; 290 kse->k_mbx.km_curthread = NULL; 291 } 292 |
| 289 crit = _kse_critical_enter(); 290 KSE_LOCK_ACQUIRE(curthread->kse, &_thread_list_lock); | |
| 291 /* | 293 /* |
| 292 * Initialise the unique id which GDB uses to 293 * track threads. 294 */ 295 new_thread->uniqueid = next_uniqueid++; 296 /* Add the thread to the linked list of all threads: */ 297 THR_LIST_ADD(new_thread); 298 KSE_LOCK_RELEASE(curthread->kse, &_thread_list_lock); 299 300 /* | |
| 301 * Schedule the new thread starting a new KSEG/KSE 302 * pair if necessary. 303 */ 304 ret = _thr_schedule_add(curthread, new_thread); | 294 * Schedule the new thread starting a new KSEG/KSE 295 * pair if necessary. 296 */ 297 ret = _thr_schedule_add(curthread, new_thread); |
| 305 if (ret != 0) { 306 KSE_LOCK_ACQUIRE(curthread->kse, 307 &_thread_list_lock); 308 THR_LIST_REMOVE(new_thread); 309 KSE_LOCK_RELEASE(curthread->kse, 310 &_thread_list_lock); 311 } 312 _kse_critical_leave(crit); | |
| 313 if (ret != 0) 314 free_thread(curthread, new_thread); 315 316 /* Return a pointer to the thread structure: */ 317 (*thread) = new_thread; 318 } 319 } 320 --- 15 unchanged lines hidden (view full) --- 336static int 337create_stack(struct pthread_attr *pattr) 338{ 339 int ret; 340 341 /* Check if a stack was specified in the thread attributes: */ 342 if ((pattr->stackaddr_attr) != NULL) { 343 pattr->guardsize_attr = 0; | 298 if (ret != 0) 299 free_thread(curthread, new_thread); 300 301 /* Return a pointer to the thread structure: */ 302 (*thread) = new_thread; 303 } 304 } 305 --- 15 unchanged lines hidden (view full) --- 321static int 322create_stack(struct pthread_attr *pattr) 323{ 324 int ret; 325 326 /* Check if a stack was specified in the thread attributes: */ 327 if ((pattr->stackaddr_attr) != NULL) { 328 pattr->guardsize_attr = 0; |
| 344 pattr->flags = THR_STACK_USER; | 329 pattr->flags |= THR_STACK_USER; |
| 345 ret = 0; 346 } 347 else 348 ret = _thr_stack_alloc(pattr); 349 return (ret); 350} 351 352 353static void 354thread_start(struct pthread *curthread, void *(*start_routine) (void *), 355 void *arg) 356{ 357 /* Run the current thread's start routine with argument: */ 358 pthread_exit(start_routine(arg)); 359 360 /* This point should never be reached. */ 361 PANIC("Thread has resumed after exit"); 362} | 330 ret = 0; 331 } 332 else 333 ret = _thr_stack_alloc(pattr); 334 return (ret); 335} 336 337 338static void 339thread_start(struct pthread *curthread, void *(*start_routine) (void *), 340 void *arg) 341{ 342 /* Run the current thread's start routine with argument: */ 343 pthread_exit(start_routine(arg)); 344 345 /* This point should never be reached. */ 346 PANIC("Thread has resumed after exit"); 347} |