thr_create.c (113661) | thr_create.c (113786) |
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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 113661 2003-04-18 07:09:43Z deischen $ | 33 * $FreeBSD: head/lib/libkse/thread/thr_create.c 113786 2003-04-21 04:02:56Z 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> --- 56 unchanged lines hidden (view full) --- 98 struct kse_group *kseg = NULL; 99 kse_critical_t crit; 100 int i; 101 int ret = 0; 102 103 if (_thr_initial == NULL) 104 _libpthread_init(NULL); 105 | 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> --- 56 unchanged lines hidden (view full) --- 98 struct kse_group *kseg = NULL; 99 kse_critical_t crit; 100 int i; 101 int ret = 0; 102 103 if (_thr_initial == NULL) 104 _libpthread_init(NULL); 105 |
106 crit = _kse_critical_enter(); | 106 /* 107 * Turn on threaded mode, if failed, it is unnecessary to 108 * do further work. 109 */ 110 if (_kse_isthreaded() == 0 && _kse_setthreaded(1)) { 111 return (EAGAIN); 112 } |
107 curthread = _get_curthread(); | 113 curthread = _get_curthread(); |
108 curkse = curthread->kse; | |
109 | 114 |
110 /* Allocate memory for the thread structure: */ | 115 /* 116 * Allocate memory for the thread structure. 117 * Some functions use malloc, so don't put it 118 * in a critical region. 119 */ |
111 if ((new_thread = _thr_alloc(curthread)) == NULL) { 112 /* Insufficient memory to create a thread: */ 113 ret = EAGAIN; 114 } else { 115 /* Initialize the thread structure: */ 116 memset(new_thread, 0, sizeof(struct pthread)); 117 118 /* Check if default thread attributes are required: */ --- 11 unchanged lines hidden (view full) --- 130 else if (((new_thread->attr.flags & PTHREAD_SCOPE_SYSTEM) != 0) && 131 (((kse = _kse_alloc(curthread)) == NULL) 132 || ((kseg = _kseg_alloc(curthread)) == NULL))) { 133 /* Insufficient memory to create a new KSE/KSEG: */ 134 ret = EAGAIN; 135 if (kse != NULL) 136 _kse_free(curthread, kse); 137 if ((new_thread->attr.flags & THR_STACK_USER) == 0) { | 120 if ((new_thread = _thr_alloc(curthread)) == NULL) { 121 /* Insufficient memory to create a thread: */ 122 ret = EAGAIN; 123 } else { 124 /* Initialize the thread structure: */ 125 memset(new_thread, 0, sizeof(struct pthread)); 126 127 /* Check if default thread attributes are required: */ --- 11 unchanged lines hidden (view full) --- 139 else if (((new_thread->attr.flags & PTHREAD_SCOPE_SYSTEM) != 0) && 140 (((kse = _kse_alloc(curthread)) == NULL) 141 || ((kseg = _kseg_alloc(curthread)) == NULL))) { 142 /* Insufficient memory to create a new KSE/KSEG: */ 143 ret = EAGAIN; 144 if (kse != NULL) 145 _kse_free(curthread, kse); 146 if ((new_thread->attr.flags & THR_STACK_USER) == 0) { |
147 crit = _kse_critical_enter(); 148 curkse = _get_curkse(); |
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138 KSE_LOCK_ACQUIRE(curkse, &_thread_list_lock); | 149 KSE_LOCK_ACQUIRE(curkse, &_thread_list_lock); |
150 /* Stack routines don't use malloc/free. */ |
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139 _thr_stack_free(&new_thread->attr); 140 KSE_LOCK_RELEASE(curkse, &_thread_list_lock); | 151 _thr_stack_free(&new_thread->attr); 152 KSE_LOCK_RELEASE(curkse, &_thread_list_lock); |
153 _kse_critical_leave(crit); |
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141 } 142 _thr_free(curthread, new_thread); 143 } 144 else { 145 if (kseg != NULL) { 146 /* Add the KSE to the KSEG's list of KSEs. */ 147 TAILQ_INSERT_HEAD(&kseg->kg_kseq, kse, k_qe); 148 kse->k_kseg = kseg; --- 15 unchanged lines hidden (view full) --- 164 new_thread->sigmask = curthread->sigmask; 165 166 /* No thread is wanting to join to this one: */ 167 new_thread->joiner = NULL; 168 169 /* Initialize the signal frame: */ 170 new_thread->curframe = NULL; 171 | 154 } 155 _thr_free(curthread, new_thread); 156 } 157 else { 158 if (kseg != NULL) { 159 /* Add the KSE to the KSEG's list of KSEs. */ 160 TAILQ_INSERT_HEAD(&kseg->kg_kseq, kse, k_qe); 161 kse->k_kseg = kseg; --- 15 unchanged lines hidden (view full) --- 177 new_thread->sigmask = curthread->sigmask; 178 179 /* No thread is wanting to join to this one: */ 180 new_thread->joiner = NULL; 181 182 /* Initialize the signal frame: */ 183 new_thread->curframe = NULL; 184 |
172 /* Initialize the machine context: */ | 185 /* 186 * Initialize the machine context. 187 * Enter a critical region to get consistent context. 188 */ 189 crit = _kse_critical_enter(); |
173 THR_GETCONTEXT(&new_thread->tmbx.tm_context); | 190 THR_GETCONTEXT(&new_thread->tmbx.tm_context); |
191 _kse_critical_leave(crit); |
|
174 new_thread->tmbx.tm_udata = new_thread; 175 new_thread->tmbx.tm_context.uc_sigmask = 176 new_thread->sigmask; 177 new_thread->tmbx.tm_context.uc_stack.ss_size = 178 new_thread->attr.stacksize_attr; 179 new_thread->tmbx.tm_context.uc_stack.ss_sp = 180 new_thread->attr.stackaddr_attr; | 192 new_thread->tmbx.tm_udata = new_thread; 193 new_thread->tmbx.tm_context.uc_sigmask = 194 new_thread->sigmask; 195 new_thread->tmbx.tm_context.uc_stack.ss_size = 196 new_thread->attr.stacksize_attr; 197 new_thread->tmbx.tm_context.uc_stack.ss_sp = 198 new_thread->attr.stackaddr_attr; |
181 | |
182 makecontext(&new_thread->tmbx.tm_context, 183 (void (*)(void))thread_start, 4, new_thread, 184 start_routine, arg); | 199 makecontext(&new_thread->tmbx.tm_context, 200 (void (*)(void))thread_start, 4, new_thread, 201 start_routine, arg); |
185 | |
186 /* 187 * Check if this thread is to inherit the scheduling 188 * attributes from its parent: 189 */ 190 if ((new_thread->attr.flags & PTHREAD_INHERIT_SCHED) != 0) { | 202 /* 203 * Check if this thread is to inherit the scheduling 204 * attributes from its parent: 205 */ 206 if ((new_thread->attr.flags & PTHREAD_INHERIT_SCHED) != 0) { |
191 /* Copy the scheduling attributes: */ | 207 /* 208 * Copy the scheduling attributes. 209 * Lock the scheduling lock to get consistent 210 * scheduling parameters. 211 */ 212 THR_SCHED_LOCK(curthread, curthread); |
192 new_thread->base_priority = 193 curthread->base_priority & 194 ~THR_SIGNAL_PRIORITY; 195 new_thread->attr.prio = 196 curthread->base_priority & 197 ~THR_SIGNAL_PRIORITY; 198 new_thread->attr.sched_policy = 199 curthread->attr.sched_policy; | 213 new_thread->base_priority = 214 curthread->base_priority & 215 ~THR_SIGNAL_PRIORITY; 216 new_thread->attr.prio = 217 curthread->base_priority & 218 ~THR_SIGNAL_PRIORITY; 219 new_thread->attr.sched_policy = 220 curthread->attr.sched_policy; |
221 THR_SCHED_UNLOCK(curthread, curthread); |
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200 } else { 201 /* 202 * Use just the thread priority, leaving the 203 * other scheduling attributes as their 204 * default values: 205 */ 206 new_thread->base_priority = 207 new_thread->attr.prio; 208 } 209 new_thread->active_priority = new_thread->base_priority; 210 new_thread->inherited_priority = 0; 211 212 /* Initialize the mutex queue: */ 213 TAILQ_INIT(&new_thread->mutexq); 214 | 222 } else { 223 /* 224 * Use just the thread priority, leaving the 225 * other scheduling attributes as their 226 * default values: 227 */ 228 new_thread->base_priority = 229 new_thread->attr.prio; 230 } 231 new_thread->active_priority = new_thread->base_priority; 232 new_thread->inherited_priority = 0; 233 234 /* Initialize the mutex queue: */ 235 TAILQ_INIT(&new_thread->mutexq); 236 |
215 /* Initialize thread locking. */ | 237 /* 238 * Initialize thread locking. 239 * Lock initializing needs malloc, so don't 240 * enter critical region before doing this! 241 */ |
216 if (_lock_init(&new_thread->lock, LCK_ADAPTIVE, 217 _thr_lock_wait, _thr_lock_wakeup) != 0) 218 PANIC("Cannot initialize thread lock"); 219 for (i = 0; i < MAX_THR_LOCKLEVEL; i++) { 220 _lockuser_init(&new_thread->lockusers[i], 221 (void *)new_thread); 222 _LCK_SET_PRIVATE2(&new_thread->lockusers[i], 223 (void *)new_thread); --- 16 unchanged lines hidden (view full) --- 240 * off the main process kseg. 241 */ 242 if ((new_thread->attr.flags & PTHREAD_SCOPE_SYSTEM) == 0) { 243 new_thread->kseg = _kse_initial->k_kseg; 244 new_thread->kse = _kse_initial; 245 } 246 else { 247 kse->k_curthread = NULL; | 242 if (_lock_init(&new_thread->lock, LCK_ADAPTIVE, 243 _thr_lock_wait, _thr_lock_wakeup) != 0) 244 PANIC("Cannot initialize thread lock"); 245 for (i = 0; i < MAX_THR_LOCKLEVEL; i++) { 246 _lockuser_init(&new_thread->lockusers[i], 247 (void *)new_thread); 248 _LCK_SET_PRIVATE2(&new_thread->lockusers[i], 249 (void *)new_thread); --- 16 unchanged lines hidden (view full) --- 266 * off the main process kseg. 267 */ 268 if ((new_thread->attr.flags & PTHREAD_SCOPE_SYSTEM) == 0) { 269 new_thread->kseg = _kse_initial->k_kseg; 270 new_thread->kse = _kse_initial; 271 } 272 else { 273 kse->k_curthread = NULL; |
274#ifdef NOT_YET |
|
248 kse->k_kseg->kg_flags |= KGF_SINGLE_THREAD; | 275 kse->k_kseg->kg_flags |= KGF_SINGLE_THREAD; |
276#endif |
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249 new_thread->kse = kse; 250 new_thread->kseg = kse->k_kseg; 251 kse->k_mbx.km_udata = kse; 252 kse->k_mbx.km_curthread = NULL; 253 } | 277 new_thread->kse = kse; 278 new_thread->kseg = kse->k_kseg; 279 kse->k_mbx.km_udata = kse; 280 kse->k_mbx.km_curthread = NULL; 281 } |
254 KSE_LOCK_ACQUIRE(curthread->kse, &_thread_list_lock); | |
255 | 282 |
283 crit = _kse_critical_enter(); 284 KSE_LOCK_ACQUIRE(curthread->kse, &_thread_list_lock); |
|
256 /* 257 * Initialise the unique id which GDB uses to 258 * track threads. 259 */ 260 new_thread->uniqueid = next_uniqueid++; | 285 /* 286 * Initialise the unique id which GDB uses to 287 * track threads. 288 */ 289 new_thread->uniqueid = next_uniqueid++; |
261 | |
262 /* Add the thread to the linked list of all threads: */ 263 THR_LIST_ADD(new_thread); | 290 /* Add the thread to the linked list of all threads: */ 291 THR_LIST_ADD(new_thread); |
264 | |
265 KSE_LOCK_RELEASE(curthread->kse, &_thread_list_lock); 266 267 /* 268 * Schedule the new thread starting a new KSEG/KSE 269 * pair if necessary. 270 */ 271 _thr_schedule_add(curthread, new_thread); | 292 KSE_LOCK_RELEASE(curthread->kse, &_thread_list_lock); 293 294 /* 295 * Schedule the new thread starting a new KSEG/KSE 296 * pair if necessary. 297 */ 298 _thr_schedule_add(curthread, new_thread); |
299 _kse_critical_leave(crit); |
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272 273 /* Return a pointer to the thread structure: */ 274 (*thread) = new_thread; 275 } 276 } | 300 301 /* Return a pointer to the thread structure: */ 302 (*thread) = new_thread; 303 } 304 } |
277 _kse_critical_leave(crit); | |
278 | 305 |
279 if ((ret == 0) && (_kse_isthreaded() == 0)) 280 _kse_setthreaded(1); 281 | |
282 /* Return the status: */ 283 return (ret); 284} 285 286static int 287create_stack(struct pthread_attr *pattr) 288{ 289 int ret; --- 23 unchanged lines hidden --- | 306 /* Return the status: */ 307 return (ret); 308} 309 310static int 311create_stack(struct pthread_attr *pattr) 312{ 313 int ret; --- 23 unchanged lines hidden --- |