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:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by John Birrell.
17 * 4. Neither the name of the author nor the names of any co-contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 *
| 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:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by John Birrell.
17 * 4. Neither the name of the author nor the names of any co-contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 *
|
34 */
35
36/* Allocate space for global thread variables here: */
37#define GLOBAL_PTHREAD_PRIVATE
38
39#include "namespace.h"
40#include <sys/param.h>
41#include <sys/types.h>
42#include <machine/reg.h>
43
44#include <sys/ioctl.h>
45#include <sys/mount.h>
46#include <sys/uio.h>
47#include <sys/socket.h>
48#include <sys/event.h>
49#include <sys/stat.h>
50#include <sys/sysctl.h>
51#include <sys/time.h>
52#include <sys/ttycom.h>
53#include <sys/wait.h>
54#include <sys/mman.h>
55#include <dirent.h>
56#include <errno.h>
57#include <fcntl.h>
58#include <paths.h>
59#include <pthread.h>
60#include <pthread_np.h>
61#include <signal.h>
62#include <stdio.h>
63#include <stdlib.h>
64#include <string.h>
65#include <unistd.h>
66#include "un-namespace.h"
67
68#include "libc_private.h"
69#include "thr_private.h"
70#include "ksd.h"
71
72int __pthread_cond_wait(pthread_cond_t *, pthread_mutex_t *);
73int __pthread_mutex_lock(pthread_mutex_t *);
74int __pthread_mutex_trylock(pthread_mutex_t *);
75
76static void init_private(void);
77static void init_main_thread(struct pthread *thread);
78
79/*
80 * All weak references used within libc should be in this table.
81 * This is so that static libraries will work.
82 */
83static void *references[] = {
84 &_accept,
85 &_bind,
86 &_close,
87 &_connect,
88 &_dup,
89 &_dup2,
90 &_execve,
91 &_fcntl,
92 &_flock,
93 &_flockfile,
94 &_fstat,
95 &_fstatfs,
96 &_fsync,
97 &_funlockfile,
98 &_getdirentries,
99 &_getlogin,
100 &_getpeername,
101 &_getsockname,
102 &_getsockopt,
103 &_ioctl,
104 &_kevent,
105 &_listen,
106 &_nanosleep,
107 &_open,
108 &_pthread_getspecific,
109 &_pthread_key_create,
110 &_pthread_key_delete,
111 &_pthread_mutex_destroy,
112 &_pthread_mutex_init,
113 &_pthread_mutex_lock,
114 &_pthread_mutex_trylock,
115 &_pthread_mutex_unlock,
116 &_pthread_mutexattr_init,
117 &_pthread_mutexattr_destroy,
118 &_pthread_mutexattr_settype,
119 &_pthread_once,
120 &_pthread_setspecific,
121 &_read,
122 &_readv,
123 &_recvfrom,
124 &_recvmsg,
125 &_select,
126 &_sendmsg,
127 &_sendto,
128 &_setsockopt,
129 &_sigaction,
130 &_sigprocmask,
131 &_sigsuspend,
132 &_socket,
133 &_socketpair,
134 &_wait4,
135 &_write,
136 &_writev
137};
138
139/*
140 * These are needed when linking statically. All references within
141 * libgcc (and in the future libc) to these routines are weak, but
142 * if they are not (strongly) referenced by the application or other
143 * libraries, then the actual functions will not be loaded.
144 */
145static void *libgcc_references[] = {
146 &_pthread_once,
147 &_pthread_key_create,
148 &_pthread_key_delete,
149 &_pthread_getspecific,
150 &_pthread_setspecific,
151 &_pthread_mutex_init,
152 &_pthread_mutex_destroy,
153 &_pthread_mutex_lock,
154 &_pthread_mutex_trylock,
155 &_pthread_mutex_unlock
156};
157
158#define DUAL_ENTRY(entry) \
159 (pthread_func_t)entry, (pthread_func_t)entry
160
161static pthread_func_t jmp_table[][2] = {
162 {DUAL_ENTRY(_pthread_cond_broadcast)}, /* PJT_COND_BROADCAST */
163 {DUAL_ENTRY(_pthread_cond_destroy)}, /* PJT_COND_DESTROY */
164 {DUAL_ENTRY(_pthread_cond_init)}, /* PJT_COND_INIT */
165 {DUAL_ENTRY(_pthread_cond_signal)}, /* PJT_COND_SIGNAL */
166 {(pthread_func_t)__pthread_cond_wait,
167 (pthread_func_t)_pthread_cond_wait}, /* PJT_COND_WAIT */
168 {DUAL_ENTRY(_pthread_getspecific)}, /* PJT_GETSPECIFIC */
169 {DUAL_ENTRY(_pthread_key_create)}, /* PJT_KEY_CREATE */
170 {DUAL_ENTRY(_pthread_key_delete)}, /* PJT_KEY_DELETE*/
171 {DUAL_ENTRY(_pthread_main_np)}, /* PJT_MAIN_NP */
172 {DUAL_ENTRY(_pthread_mutex_destroy)}, /* PJT_MUTEX_DESTROY */
173 {DUAL_ENTRY(_pthread_mutex_init)}, /* PJT_MUTEX_INIT */
174 {(pthread_func_t)__pthread_mutex_lock,
175 (pthread_func_t)_pthread_mutex_lock}, /* PJT_MUTEX_LOCK */
176 {(pthread_func_t)__pthread_mutex_trylock,
177 (pthread_func_t)_pthread_mutex_trylock},/* PJT_MUTEX_TRYLOCK */
178 {DUAL_ENTRY(_pthread_mutex_unlock)}, /* PJT_MUTEX_UNLOCK */
179 {DUAL_ENTRY(_pthread_mutexattr_destroy)}, /* PJT_MUTEXATTR_DESTROY */
180 {DUAL_ENTRY(_pthread_mutexattr_init)}, /* PJT_MUTEXATTR_INIT */
181 {DUAL_ENTRY(_pthread_mutexattr_settype)}, /* PJT_MUTEXATTR_SETTYPE */
182 {DUAL_ENTRY(_pthread_once)}, /* PJT_ONCE */
183 {DUAL_ENTRY(_pthread_rwlock_destroy)}, /* PJT_RWLOCK_DESTROY */
184 {DUAL_ENTRY(_pthread_rwlock_init)}, /* PJT_RWLOCK_INIT */
185 {DUAL_ENTRY(_pthread_rwlock_rdlock)}, /* PJT_RWLOCK_RDLOCK */
186 {DUAL_ENTRY(_pthread_rwlock_tryrdlock)},/* PJT_RWLOCK_TRYRDLOCK */
187 {DUAL_ENTRY(_pthread_rwlock_trywrlock)},/* PJT_RWLOCK_TRYWRLOCK */
188 {DUAL_ENTRY(_pthread_rwlock_unlock)}, /* PJT_RWLOCK_UNLOCK */
189 {DUAL_ENTRY(_pthread_rwlock_wrlock)}, /* PJT_RWLOCK_WRLOCK */
190 {DUAL_ENTRY(_pthread_self)}, /* PJT_SELF */
191 {DUAL_ENTRY(_pthread_setspecific)}, /* PJT_SETSPECIFIC */
192 {DUAL_ENTRY(_pthread_sigmask)} /* PJT_SIGMASK */
193};
194
195static int init_once = 0;
196
197/*
198 * Threaded process initialization.
199 *
200 * This is only called under two conditions:
201 *
202 * 1) Some thread routines have detected that the library hasn't yet
203 * been initialized (_thr_initial == NULL && curthread == NULL), or
204 *
205 * 2) An explicit call to reinitialize after a fork (indicated
206 * by curthread != NULL)
207 */
208void
209_libpthread_init(struct pthread *curthread)
210{
211 int fd;
212
213 /* Check if this function has already been called: */
214 if ((_thr_initial != NULL) && (curthread == NULL))
215 /* Only initialize the threaded application once. */
216 return;
217
218 /*
219 * Make gcc quiescent about {,libgcc_}references not being
220 * referenced:
221 */
222 if ((references[0] == NULL) || (libgcc_references[0] == NULL))
223 PANIC("Failed loading mandatory references in _thread_init");
224
225 /*
226 * Check the size of the jump table to make sure it is preset
227 * with the correct number of entries.
228 */
229 if (sizeof(jmp_table) != (sizeof(pthread_func_t) * PJT_MAX * 2))
230 PANIC("Thread jump table not properly initialized");
231 memcpy(__thr_jtable, jmp_table, sizeof(jmp_table));
232
233 /*
234 * Check for the special case of this process running as
235 * or in place of init as pid = 1:
236 */
237 if ((_thr_pid = getpid()) == 1) {
238 /*
239 * Setup a new session for this process which is
240 * assumed to be running as root.
241 */
242 if (setsid() == -1)
243 PANIC("Can't set session ID");
244 if (revoke(_PATH_CONSOLE) != 0)
245 PANIC("Can't revoke console");
246 if ((fd = __sys_open(_PATH_CONSOLE, O_RDWR)) < 0)
247 PANIC("Can't open console");
248 if (setlogin("root") == -1)
249 PANIC("Can't set login to root");
250 if (__sys_ioctl(fd, TIOCSCTTY, (char *) NULL) == -1)
251 PANIC("Can't set controlling terminal");
252 }
253
254 /* Initialize pthread private data. */
255 init_private();
256 _kse_init();
257
258 /* Initialize the initial kse and kseg. */
259 _kse_initial = _kse_alloc(NULL);
260 if (_kse_initial == NULL)
261 PANIC("Can't allocate initial kse.");
262 _kse_initial->k_kseg = _kseg_alloc(NULL);
263 if (_kse_initial->k_kseg == NULL)
264 PANIC("Can't allocate initial kseg.");
265 _kse_initial->k_schedq = &_kse_initial->k_kseg->kg_schedq;
266
267 /* Set the initial thread. */
268 if (curthread == NULL) {
269 /* Create and initialize the initial thread. */
270 curthread = _thr_alloc(NULL);
271 if (curthread == NULL)
272 PANIC("Can't allocate initial thread");
273 _thr_initial = curthread;
274 init_main_thread(curthread);
275 } else {
276 /*
277 * The initial thread is the current thread. It is
278 * assumed that the current thread is already initialized
279 * because it is left over from a fork().
280 */
281 _thr_initial = curthread;
282 }
| 34 */
35
36/* Allocate space for global thread variables here: */
37#define GLOBAL_PTHREAD_PRIVATE
38
39#include "namespace.h"
40#include <sys/param.h>
41#include <sys/types.h>
42#include <machine/reg.h>
43
44#include <sys/ioctl.h>
45#include <sys/mount.h>
46#include <sys/uio.h>
47#include <sys/socket.h>
48#include <sys/event.h>
49#include <sys/stat.h>
50#include <sys/sysctl.h>
51#include <sys/time.h>
52#include <sys/ttycom.h>
53#include <sys/wait.h>
54#include <sys/mman.h>
55#include <dirent.h>
56#include <errno.h>
57#include <fcntl.h>
58#include <paths.h>
59#include <pthread.h>
60#include <pthread_np.h>
61#include <signal.h>
62#include <stdio.h>
63#include <stdlib.h>
64#include <string.h>
65#include <unistd.h>
66#include "un-namespace.h"
67
68#include "libc_private.h"
69#include "thr_private.h"
70#include "ksd.h"
71
72int __pthread_cond_wait(pthread_cond_t *, pthread_mutex_t *);
73int __pthread_mutex_lock(pthread_mutex_t *);
74int __pthread_mutex_trylock(pthread_mutex_t *);
75
76static void init_private(void);
77static void init_main_thread(struct pthread *thread);
78
79/*
80 * All weak references used within libc should be in this table.
81 * This is so that static libraries will work.
82 */
83static void *references[] = {
84 &_accept,
85 &_bind,
86 &_close,
87 &_connect,
88 &_dup,
89 &_dup2,
90 &_execve,
91 &_fcntl,
92 &_flock,
93 &_flockfile,
94 &_fstat,
95 &_fstatfs,
96 &_fsync,
97 &_funlockfile,
98 &_getdirentries,
99 &_getlogin,
100 &_getpeername,
101 &_getsockname,
102 &_getsockopt,
103 &_ioctl,
104 &_kevent,
105 &_listen,
106 &_nanosleep,
107 &_open,
108 &_pthread_getspecific,
109 &_pthread_key_create,
110 &_pthread_key_delete,
111 &_pthread_mutex_destroy,
112 &_pthread_mutex_init,
113 &_pthread_mutex_lock,
114 &_pthread_mutex_trylock,
115 &_pthread_mutex_unlock,
116 &_pthread_mutexattr_init,
117 &_pthread_mutexattr_destroy,
118 &_pthread_mutexattr_settype,
119 &_pthread_once,
120 &_pthread_setspecific,
121 &_read,
122 &_readv,
123 &_recvfrom,
124 &_recvmsg,
125 &_select,
126 &_sendmsg,
127 &_sendto,
128 &_setsockopt,
129 &_sigaction,
130 &_sigprocmask,
131 &_sigsuspend,
132 &_socket,
133 &_socketpair,
134 &_wait4,
135 &_write,
136 &_writev
137};
138
139/*
140 * These are needed when linking statically. All references within
141 * libgcc (and in the future libc) to these routines are weak, but
142 * if they are not (strongly) referenced by the application or other
143 * libraries, then the actual functions will not be loaded.
144 */
145static void *libgcc_references[] = {
146 &_pthread_once,
147 &_pthread_key_create,
148 &_pthread_key_delete,
149 &_pthread_getspecific,
150 &_pthread_setspecific,
151 &_pthread_mutex_init,
152 &_pthread_mutex_destroy,
153 &_pthread_mutex_lock,
154 &_pthread_mutex_trylock,
155 &_pthread_mutex_unlock
156};
157
158#define DUAL_ENTRY(entry) \
159 (pthread_func_t)entry, (pthread_func_t)entry
160
161static pthread_func_t jmp_table[][2] = {
162 {DUAL_ENTRY(_pthread_cond_broadcast)}, /* PJT_COND_BROADCAST */
163 {DUAL_ENTRY(_pthread_cond_destroy)}, /* PJT_COND_DESTROY */
164 {DUAL_ENTRY(_pthread_cond_init)}, /* PJT_COND_INIT */
165 {DUAL_ENTRY(_pthread_cond_signal)}, /* PJT_COND_SIGNAL */
166 {(pthread_func_t)__pthread_cond_wait,
167 (pthread_func_t)_pthread_cond_wait}, /* PJT_COND_WAIT */
168 {DUAL_ENTRY(_pthread_getspecific)}, /* PJT_GETSPECIFIC */
169 {DUAL_ENTRY(_pthread_key_create)}, /* PJT_KEY_CREATE */
170 {DUAL_ENTRY(_pthread_key_delete)}, /* PJT_KEY_DELETE*/
171 {DUAL_ENTRY(_pthread_main_np)}, /* PJT_MAIN_NP */
172 {DUAL_ENTRY(_pthread_mutex_destroy)}, /* PJT_MUTEX_DESTROY */
173 {DUAL_ENTRY(_pthread_mutex_init)}, /* PJT_MUTEX_INIT */
174 {(pthread_func_t)__pthread_mutex_lock,
175 (pthread_func_t)_pthread_mutex_lock}, /* PJT_MUTEX_LOCK */
176 {(pthread_func_t)__pthread_mutex_trylock,
177 (pthread_func_t)_pthread_mutex_trylock},/* PJT_MUTEX_TRYLOCK */
178 {DUAL_ENTRY(_pthread_mutex_unlock)}, /* PJT_MUTEX_UNLOCK */
179 {DUAL_ENTRY(_pthread_mutexattr_destroy)}, /* PJT_MUTEXATTR_DESTROY */
180 {DUAL_ENTRY(_pthread_mutexattr_init)}, /* PJT_MUTEXATTR_INIT */
181 {DUAL_ENTRY(_pthread_mutexattr_settype)}, /* PJT_MUTEXATTR_SETTYPE */
182 {DUAL_ENTRY(_pthread_once)}, /* PJT_ONCE */
183 {DUAL_ENTRY(_pthread_rwlock_destroy)}, /* PJT_RWLOCK_DESTROY */
184 {DUAL_ENTRY(_pthread_rwlock_init)}, /* PJT_RWLOCK_INIT */
185 {DUAL_ENTRY(_pthread_rwlock_rdlock)}, /* PJT_RWLOCK_RDLOCK */
186 {DUAL_ENTRY(_pthread_rwlock_tryrdlock)},/* PJT_RWLOCK_TRYRDLOCK */
187 {DUAL_ENTRY(_pthread_rwlock_trywrlock)},/* PJT_RWLOCK_TRYWRLOCK */
188 {DUAL_ENTRY(_pthread_rwlock_unlock)}, /* PJT_RWLOCK_UNLOCK */
189 {DUAL_ENTRY(_pthread_rwlock_wrlock)}, /* PJT_RWLOCK_WRLOCK */
190 {DUAL_ENTRY(_pthread_self)}, /* PJT_SELF */
191 {DUAL_ENTRY(_pthread_setspecific)}, /* PJT_SETSPECIFIC */
192 {DUAL_ENTRY(_pthread_sigmask)} /* PJT_SIGMASK */
193};
194
195static int init_once = 0;
196
197/*
198 * Threaded process initialization.
199 *
200 * This is only called under two conditions:
201 *
202 * 1) Some thread routines have detected that the library hasn't yet
203 * been initialized (_thr_initial == NULL && curthread == NULL), or
204 *
205 * 2) An explicit call to reinitialize after a fork (indicated
206 * by curthread != NULL)
207 */
208void
209_libpthread_init(struct pthread *curthread)
210{
211 int fd;
212
213 /* Check if this function has already been called: */
214 if ((_thr_initial != NULL) && (curthread == NULL))
215 /* Only initialize the threaded application once. */
216 return;
217
218 /*
219 * Make gcc quiescent about {,libgcc_}references not being
220 * referenced:
221 */
222 if ((references[0] == NULL) || (libgcc_references[0] == NULL))
223 PANIC("Failed loading mandatory references in _thread_init");
224
225 /*
226 * Check the size of the jump table to make sure it is preset
227 * with the correct number of entries.
228 */
229 if (sizeof(jmp_table) != (sizeof(pthread_func_t) * PJT_MAX * 2))
230 PANIC("Thread jump table not properly initialized");
231 memcpy(__thr_jtable, jmp_table, sizeof(jmp_table));
232
233 /*
234 * Check for the special case of this process running as
235 * or in place of init as pid = 1:
236 */
237 if ((_thr_pid = getpid()) == 1) {
238 /*
239 * Setup a new session for this process which is
240 * assumed to be running as root.
241 */
242 if (setsid() == -1)
243 PANIC("Can't set session ID");
244 if (revoke(_PATH_CONSOLE) != 0)
245 PANIC("Can't revoke console");
246 if ((fd = __sys_open(_PATH_CONSOLE, O_RDWR)) < 0)
247 PANIC("Can't open console");
248 if (setlogin("root") == -1)
249 PANIC("Can't set login to root");
250 if (__sys_ioctl(fd, TIOCSCTTY, (char *) NULL) == -1)
251 PANIC("Can't set controlling terminal");
252 }
253
254 /* Initialize pthread private data. */
255 init_private();
256 _kse_init();
257
258 /* Initialize the initial kse and kseg. */
259 _kse_initial = _kse_alloc(NULL);
260 if (_kse_initial == NULL)
261 PANIC("Can't allocate initial kse.");
262 _kse_initial->k_kseg = _kseg_alloc(NULL);
263 if (_kse_initial->k_kseg == NULL)
264 PANIC("Can't allocate initial kseg.");
265 _kse_initial->k_schedq = &_kse_initial->k_kseg->kg_schedq;
266
267 /* Set the initial thread. */
268 if (curthread == NULL) {
269 /* Create and initialize the initial thread. */
270 curthread = _thr_alloc(NULL);
271 if (curthread == NULL)
272 PANIC("Can't allocate initial thread");
273 _thr_initial = curthread;
274 init_main_thread(curthread);
275 } else {
276 /*
277 * The initial thread is the current thread. It is
278 * assumed that the current thread is already initialized
279 * because it is left over from a fork().
280 */
281 _thr_initial = curthread;
282 }
|
294
295 /* Setup the KSE/thread specific data for the current KSE/thread. */
296 if (_ksd_setprivate(&_thr_initial->kse->k_ksd) != 0)
297 PANIC("Can't set initial KSE specific data");
298 _set_curkse(_thr_initial->kse);
299 _thr_initial->kse->k_curthread = _thr_initial;
300 _thr_initial->kse->k_flags |= KF_INITIALIZED;
301 _kse_initial->k_curthread = _thr_initial;
302}
303
304/*
305 * This function and pthread_create() do a lot of the same things.
306 * It'd be nice to consolidate the common stuff in one place.
307 */
308static void
309init_main_thread(struct pthread *thread)
310{
311 int i;
312
313 /* Zero the initial thread structure. */
314 memset(thread, 0, sizeof(struct pthread));
315
316 /* Setup the thread attributes. */
317 thread->attr = _pthread_attr_default;
318
319 /*
320 * Set up the thread stack.
321 *
322 * Create a red zone below the main stack. All other stacks
323 * are constrained to a maximum size by the parameters
324 * passed to mmap(), but this stack is only limited by
325 * resource limits, so this stack needs an explicitly mapped
326 * red zone to protect the thread stack that is just beyond.
327 */
328 if (mmap((void *)_usrstack - THR_STACK_INITIAL -
329 _thr_guard_default, _thr_guard_default, 0, MAP_ANON,
330 -1, 0) == MAP_FAILED)
331 PANIC("Cannot allocate red zone for initial thread");
332
333 /*
334 * Mark the stack as an application supplied stack so that it
335 * isn't deallocated.
336 *
337 * XXX - I'm not sure it would hurt anything to deallocate
338 * the main thread stack because deallocation doesn't
339 * actually free() it; it just puts it in the free
340 * stack queue for later reuse.
341 */
342 thread->attr.stackaddr_attr = (void *)_usrstack - THR_STACK_INITIAL;
343 thread->attr.stacksize_attr = THR_STACK_INITIAL;
344 thread->attr.guardsize_attr = _thr_guard_default;
345 thread->attr.flags |= THR_STACK_USER;
346
347 /*
348 * Write a magic value to the thread structure
349 * to help identify valid ones:
350 */
351 thread->magic = THR_MAGIC;
352
353 thread->slice_usec = -1;
354 thread->cancelflags = PTHREAD_CANCEL_ENABLE | PTHREAD_CANCEL_DEFERRED;
355 thread->name = strdup("initial thread");
356
357 /* Initialize the thread for signals: */
358 sigemptyset(&thread->sigmask);
359
360 /*
361 * Set up the thread mailbox. The threads saved context
362 * is also in the mailbox.
363 */
364 thread->tmbx.tm_udata = thread;
365 thread->tmbx.tm_context.uc_sigmask = thread->sigmask;
366 thread->tmbx.tm_context.uc_stack.ss_size = thread->attr.stacksize_attr;
367 thread->tmbx.tm_context.uc_stack.ss_sp = thread->attr.stackaddr_attr;
368
369 /* Default the priority of the initial thread: */
370 thread->base_priority = THR_DEFAULT_PRIORITY;
371 thread->active_priority = THR_DEFAULT_PRIORITY;
372 thread->inherited_priority = 0;
373
374 /* Initialize the mutex queue: */
375 TAILQ_INIT(&thread->mutexq);
376
377 /* Initialize thread locking. */
378 if (_lock_init(&thread->lock, LCK_ADAPTIVE,
379 _thr_lock_wait, _thr_lock_wakeup) != 0)
380 PANIC("Cannot initialize initial thread lock");
381 for (i = 0; i < MAX_THR_LOCKLEVEL; i++) {
382 _lockuser_init(&thread->lockusers[i], (void *)thread);
383 _LCK_SET_PRIVATE2(&thread->lockusers[i], (void *)thread);
384 }
385
386 /* Initialize hooks in the thread structure: */
387 thread->specific = NULL;
388 thread->cleanup = NULL;
389 thread->flags = 0;
390 thread->continuation = NULL;
391
392 thread->state = PS_RUNNING;
393 thread->uniqueid = 0;
394}
395
396static void
397init_private(void)
398{
399 struct clockinfo clockinfo;
400 struct sigaction act;
401 size_t len;
402 int mib[2];
403 int i;
404
405 /*
406 * Avoid reinitializing some things if they don't need to be,
407 * e.g. after a fork().
408 */
409 if (init_once == 0) {
410 /* Find the stack top */
411 mib[0] = CTL_KERN;
412 mib[1] = KERN_USRSTACK;
413 len = sizeof (_usrstack);
414 if (sysctl(mib, 2, &_usrstack, &len, NULL, 0) == -1)
415 PANIC("Cannot get kern.usrstack from sysctl");
416
417 /*
418 * Create a red zone below the main stack. All other
419 * stacks are constrained to a maximum size by the
420 * parameters passed to mmap(), but this stack is only
421 * limited by resource limits, so this stack needs an
422 * explicitly mapped red zone to protect the thread stack
423 * that is just beyond.
424 */
425 if (mmap((void *)_usrstack - THR_STACK_INITIAL -
426 _thr_guard_default, _thr_guard_default,
427 0, MAP_ANON, -1, 0) == MAP_FAILED)
428 PANIC("Cannot allocate red zone for initial thread");
429
430 /* Get the kernel clockrate: */
431 mib[0] = CTL_KERN;
432 mib[1] = KERN_CLOCKRATE;
433 len = sizeof (struct clockinfo);
434 if (sysctl(mib, 2, &clockinfo, &len, NULL, 0) == 0)
435 _clock_res_usec = clockinfo.tick;
436 else
437 _clock_res_usec = CLOCK_RES_USEC;
438
439 _thr_page_size = getpagesize();
440 _thr_guard_default = _thr_page_size;
441
442 init_once = 1; /* Don't do this again. */
443 } else {
444 /*
445 * Destroy the locks before creating them. We don't
446 * know what state they are in so it is better to just
447 * recreate them.
448 */
449 _lock_destroy(&_thread_signal_lock);
450 _lock_destroy(&_mutex_static_lock);
451 _lock_destroy(&_rwlock_static_lock);
452 _lock_destroy(&_keytable_lock);
453 }
454
455
456 /* Initialize everything else. */
457 TAILQ_INIT(&_thread_list);
458 TAILQ_INIT(&_thread_gc_list);
459
460 /* Enter a loop to get the existing signal status: */
461 for (i = 1; i < NSIG; i++) {
462 /* Check for signals which cannot be trapped: */
463 if (i == SIGKILL || i == SIGSTOP) {
464 }
465
466 /* Get the signal handler details: */
467 else if (__sys_sigaction(i, NULL,
468 &_thread_sigact[i - 1]) != 0) {
469 /*
470 * Abort this process if signal
471 * initialisation fails:
472 */
473 PANIC("Cannot read signal handler info");
474 }
475
476 /* Initialize the SIG_DFL dummy handler count. */
477 _thread_dfl_count[i] = 0;
478 }
479
480 /*
481 * Install the signal handler for SIGINFO. It isn't
482 * really needed, but it is nice to have for debugging
483 * purposes.
484 */
485 if (__sys_sigaction(SIGINFO, &act, NULL) != 0) {
486 /*
487 * Abort this process if signal initialisation fails:
488 */
489 PANIC("Cannot initialize signal handler");
490 }
491 _thread_sigact[SIGINFO - 1].sa_flags = SA_SIGINFO | SA_RESTART;
492
493 /*
494 * Initialize the lock for temporary installation of signal
495 * handlers (to support sigwait() semantics) and for the
496 * process signal mask and pending signal sets.
497 */
498 if (_lock_init(&_thread_signal_lock, LCK_ADAPTIVE,
499 _thr_lock_wait, _thr_lock_wakeup) != 0)
500 PANIC("Cannot initialize _thread_signal_lock");
501 if (_lock_init(&_mutex_static_lock, LCK_ADAPTIVE,
502 _thr_lock_wait, _thr_lock_wakeup) != 0)
503 PANIC("Cannot initialize mutex static init lock");
504 if (_lock_init(&_rwlock_static_lock, LCK_ADAPTIVE,
505 _thr_lock_wait, _thr_lock_wakeup) != 0)
506 PANIC("Cannot initialize rwlock static init lock");
507 if (_lock_init(&_keytable_lock, LCK_ADAPTIVE,
508 _thr_lock_wait, _thr_lock_wakeup) != 0)
509 PANIC("Cannot initialize thread specific keytable lock");
510
511 /* Clear pending signals and get the process signal mask. */
512 sigemptyset(&_thr_proc_sigpending);
513 __sys_sigprocmask(SIG_SETMASK, NULL, &_thr_proc_sigmask);
514
515 /*
516 * _thread_list_lock and _kse_count are initialized
517 * by _kse_init()
518 */
519}
| 294
295 /* Setup the KSE/thread specific data for the current KSE/thread. */
296 if (_ksd_setprivate(&_thr_initial->kse->k_ksd) != 0)
297 PANIC("Can't set initial KSE specific data");
298 _set_curkse(_thr_initial->kse);
299 _thr_initial->kse->k_curthread = _thr_initial;
300 _thr_initial->kse->k_flags |= KF_INITIALIZED;
301 _kse_initial->k_curthread = _thr_initial;
302}
303
304/*
305 * This function and pthread_create() do a lot of the same things.
306 * It'd be nice to consolidate the common stuff in one place.
307 */
308static void
309init_main_thread(struct pthread *thread)
310{
311 int i;
312
313 /* Zero the initial thread structure. */
314 memset(thread, 0, sizeof(struct pthread));
315
316 /* Setup the thread attributes. */
317 thread->attr = _pthread_attr_default;
318
319 /*
320 * Set up the thread stack.
321 *
322 * Create a red zone below the main stack. All other stacks
323 * are constrained to a maximum size by the parameters
324 * passed to mmap(), but this stack is only limited by
325 * resource limits, so this stack needs an explicitly mapped
326 * red zone to protect the thread stack that is just beyond.
327 */
328 if (mmap((void *)_usrstack - THR_STACK_INITIAL -
329 _thr_guard_default, _thr_guard_default, 0, MAP_ANON,
330 -1, 0) == MAP_FAILED)
331 PANIC("Cannot allocate red zone for initial thread");
332
333 /*
334 * Mark the stack as an application supplied stack so that it
335 * isn't deallocated.
336 *
337 * XXX - I'm not sure it would hurt anything to deallocate
338 * the main thread stack because deallocation doesn't
339 * actually free() it; it just puts it in the free
340 * stack queue for later reuse.
341 */
342 thread->attr.stackaddr_attr = (void *)_usrstack - THR_STACK_INITIAL;
343 thread->attr.stacksize_attr = THR_STACK_INITIAL;
344 thread->attr.guardsize_attr = _thr_guard_default;
345 thread->attr.flags |= THR_STACK_USER;
346
347 /*
348 * Write a magic value to the thread structure
349 * to help identify valid ones:
350 */
351 thread->magic = THR_MAGIC;
352
353 thread->slice_usec = -1;
354 thread->cancelflags = PTHREAD_CANCEL_ENABLE | PTHREAD_CANCEL_DEFERRED;
355 thread->name = strdup("initial thread");
356
357 /* Initialize the thread for signals: */
358 sigemptyset(&thread->sigmask);
359
360 /*
361 * Set up the thread mailbox. The threads saved context
362 * is also in the mailbox.
363 */
364 thread->tmbx.tm_udata = thread;
365 thread->tmbx.tm_context.uc_sigmask = thread->sigmask;
366 thread->tmbx.tm_context.uc_stack.ss_size = thread->attr.stacksize_attr;
367 thread->tmbx.tm_context.uc_stack.ss_sp = thread->attr.stackaddr_attr;
368
369 /* Default the priority of the initial thread: */
370 thread->base_priority = THR_DEFAULT_PRIORITY;
371 thread->active_priority = THR_DEFAULT_PRIORITY;
372 thread->inherited_priority = 0;
373
374 /* Initialize the mutex queue: */
375 TAILQ_INIT(&thread->mutexq);
376
377 /* Initialize thread locking. */
378 if (_lock_init(&thread->lock, LCK_ADAPTIVE,
379 _thr_lock_wait, _thr_lock_wakeup) != 0)
380 PANIC("Cannot initialize initial thread lock");
381 for (i = 0; i < MAX_THR_LOCKLEVEL; i++) {
382 _lockuser_init(&thread->lockusers[i], (void *)thread);
383 _LCK_SET_PRIVATE2(&thread->lockusers[i], (void *)thread);
384 }
385
386 /* Initialize hooks in the thread structure: */
387 thread->specific = NULL;
388 thread->cleanup = NULL;
389 thread->flags = 0;
390 thread->continuation = NULL;
391
392 thread->state = PS_RUNNING;
393 thread->uniqueid = 0;
394}
395
396static void
397init_private(void)
398{
399 struct clockinfo clockinfo;
400 struct sigaction act;
401 size_t len;
402 int mib[2];
403 int i;
404
405 /*
406 * Avoid reinitializing some things if they don't need to be,
407 * e.g. after a fork().
408 */
409 if (init_once == 0) {
410 /* Find the stack top */
411 mib[0] = CTL_KERN;
412 mib[1] = KERN_USRSTACK;
413 len = sizeof (_usrstack);
414 if (sysctl(mib, 2, &_usrstack, &len, NULL, 0) == -1)
415 PANIC("Cannot get kern.usrstack from sysctl");
416
417 /*
418 * Create a red zone below the main stack. All other
419 * stacks are constrained to a maximum size by the
420 * parameters passed to mmap(), but this stack is only
421 * limited by resource limits, so this stack needs an
422 * explicitly mapped red zone to protect the thread stack
423 * that is just beyond.
424 */
425 if (mmap((void *)_usrstack - THR_STACK_INITIAL -
426 _thr_guard_default, _thr_guard_default,
427 0, MAP_ANON, -1, 0) == MAP_FAILED)
428 PANIC("Cannot allocate red zone for initial thread");
429
430 /* Get the kernel clockrate: */
431 mib[0] = CTL_KERN;
432 mib[1] = KERN_CLOCKRATE;
433 len = sizeof (struct clockinfo);
434 if (sysctl(mib, 2, &clockinfo, &len, NULL, 0) == 0)
435 _clock_res_usec = clockinfo.tick;
436 else
437 _clock_res_usec = CLOCK_RES_USEC;
438
439 _thr_page_size = getpagesize();
440 _thr_guard_default = _thr_page_size;
441
442 init_once = 1; /* Don't do this again. */
443 } else {
444 /*
445 * Destroy the locks before creating them. We don't
446 * know what state they are in so it is better to just
447 * recreate them.
448 */
449 _lock_destroy(&_thread_signal_lock);
450 _lock_destroy(&_mutex_static_lock);
451 _lock_destroy(&_rwlock_static_lock);
452 _lock_destroy(&_keytable_lock);
453 }
454
455
456 /* Initialize everything else. */
457 TAILQ_INIT(&_thread_list);
458 TAILQ_INIT(&_thread_gc_list);
459
460 /* Enter a loop to get the existing signal status: */
461 for (i = 1; i < NSIG; i++) {
462 /* Check for signals which cannot be trapped: */
463 if (i == SIGKILL || i == SIGSTOP) {
464 }
465
466 /* Get the signal handler details: */
467 else if (__sys_sigaction(i, NULL,
468 &_thread_sigact[i - 1]) != 0) {
469 /*
470 * Abort this process if signal
471 * initialisation fails:
472 */
473 PANIC("Cannot read signal handler info");
474 }
475
476 /* Initialize the SIG_DFL dummy handler count. */
477 _thread_dfl_count[i] = 0;
478 }
479
480 /*
481 * Install the signal handler for SIGINFO. It isn't
482 * really needed, but it is nice to have for debugging
483 * purposes.
484 */
485 if (__sys_sigaction(SIGINFO, &act, NULL) != 0) {
486 /*
487 * Abort this process if signal initialisation fails:
488 */
489 PANIC("Cannot initialize signal handler");
490 }
491 _thread_sigact[SIGINFO - 1].sa_flags = SA_SIGINFO | SA_RESTART;
492
493 /*
494 * Initialize the lock for temporary installation of signal
495 * handlers (to support sigwait() semantics) and for the
496 * process signal mask and pending signal sets.
497 */
498 if (_lock_init(&_thread_signal_lock, LCK_ADAPTIVE,
499 _thr_lock_wait, _thr_lock_wakeup) != 0)
500 PANIC("Cannot initialize _thread_signal_lock");
501 if (_lock_init(&_mutex_static_lock, LCK_ADAPTIVE,
502 _thr_lock_wait, _thr_lock_wakeup) != 0)
503 PANIC("Cannot initialize mutex static init lock");
504 if (_lock_init(&_rwlock_static_lock, LCK_ADAPTIVE,
505 _thr_lock_wait, _thr_lock_wakeup) != 0)
506 PANIC("Cannot initialize rwlock static init lock");
507 if (_lock_init(&_keytable_lock, LCK_ADAPTIVE,
508 _thr_lock_wait, _thr_lock_wakeup) != 0)
509 PANIC("Cannot initialize thread specific keytable lock");
510
511 /* Clear pending signals and get the process signal mask. */
512 sigemptyset(&_thr_proc_sigpending);
513 __sys_sigprocmask(SIG_SETMASK, NULL, &_thr_proc_sigmask);
514
515 /*
516 * _thread_list_lock and _kse_count are initialized
517 * by _kse_init()
518 */
519}
|