1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* 3 * The contents of this file are subject to the Mozilla Public 4 * License Version 1.1 (the "License"); you may not use this file 5 * except in compliance with the License. You may obtain a copy of 6 * the License at http://www.mozilla.org/MPL/ 7 * 8 * Software distributed under the License is distributed on an "AS 9 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or 10 * implied. See the License for the specific language governing 11 * rights and limitations under the License. 12 * 13 * The Original Code is the Netscape Portable Runtime (NSPR). 14 * 15 * The Initial Developer of the Original Code is Netscape 16 * Communications Corporation. Portions created by Netscape are 17 * Copyright (C) 1998-2000 Netscape Communications Corporation. All 18 * Rights Reserved. 19 * 20 * Contributor(s): 21 * 22 * Alternatively, the contents of this file may be used under the 23 * terms of the GNU General Public License Version 2 or later (the 24 * "GPL"), in which case the provisions of the GPL are applicable 25 * instead of those above. If you wish to allow use of your 26 * version of this file only under the terms of the GPL and not to 27 * allow others to use your version of this file under the MPL, 28 * indicate your decision by deleting the provisions above and 29 * replace them with the notice and other provisions required by 30 * the GPL. If you do not delete the provisions above, a recipient 31 * may use your version of this file under either the MPL or the 32 * GPL. 33 */ 34 35 #ifndef nspr_pthread_defs_h___ 36 #define nspr_pthread_defs_h___ 37 38 #include <pthread.h> 39 #include "prthread.h" 40 41 #if defined(PTHREADS_USER) 42 /* 43 ** Thread Local Storage 44 */ 45 extern pthread_key_t current_thread_key; 46 extern pthread_key_t current_cpu_key; 47 extern pthread_key_t last_thread_key; 48 extern pthread_key_t intsoff_key; 49 50 #define _MD_CURRENT_THREAD() \ 51 ((struct PRThread *) pthread_getspecific(current_thread_key)) 52 #define _MD_CURRENT_CPU() \ 53 ((struct _PRCPU *) pthread_getspecific(current_cpu_key)) 54 #define _MD_LAST_THREAD() \ 55 ((struct PRThread *) pthread_getspecific(last_thread_key)) 56 57 #define _MD_SET_CURRENT_THREAD(newval) \ 58 pthread_setspecific(current_thread_key, (void *)newval) 59 60 #define _MD_SET_CURRENT_CPU(newval) \ 61 pthread_setspecific(current_cpu_key, (void *)newval) 62 63 #define _MD_SET_LAST_THREAD(newval) \ 64 pthread_setspecific(last_thread_key, (void *)newval) 65 66 #define _MD_SET_INTSOFF(_val) 67 #define _MD_GET_INTSOFF() 1 68 69 /* 70 ** Initialize the thread context preparing it to execute _main. 71 */ 72 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ 73 PR_BEGIN_MACRO \ 74 *status = PR_TRUE; \ 75 if (SAVE_CONTEXT(_thread)) { \ 76 (*_main)(); \ 77 } \ 78 _MD_SET_THR_SP(_thread, _sp); \ 79 _thread->no_sched = 0; \ 80 PR_END_MACRO 81 82 #define _MD_SWITCH_CONTEXT(_thread) \ 83 PR_BEGIN_MACRO \ 84 PR_ASSERT(_thread->no_sched); \ 85 if (!SAVE_CONTEXT(_thread)) { \ 86 (_thread)->md.errcode = errno; \ 87 _MD_SET_LAST_THREAD(_thread); \ 88 _PR_Schedule(); \ 89 } else { \ 90 (_MD_LAST_THREAD())->no_sched = 0; \ 91 } \ 92 PR_END_MACRO 93 94 /* 95 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT 96 */ 97 #define _MD_RESTORE_CONTEXT(_thread) \ 98 PR_BEGIN_MACRO \ 99 errno = (_thread)->md.errcode; \ 100 _MD_SET_CURRENT_THREAD(_thread); \ 101 _thread->no_sched = 1; \ 102 GOTO_CONTEXT(_thread); \ 103 PR_END_MACRO 104 105 106 /* Machine-dependent (MD) data structures */ 107 108 struct _MDThread { 109 jmp_buf jb; 110 int id; 111 int errcode; 112 pthread_t pthread; 113 pthread_mutex_t pthread_mutex; 114 pthread_cond_t pthread_cond; 115 int wait; 116 }; 117 118 struct _MDThreadStack { 119 PRInt8 notused; 120 }; 121 122 struct _MDLock { 123 pthread_mutex_t mutex; 124 }; 125 126 struct _MDSemaphore { 127 PRInt8 notused; 128 }; 129 130 struct _MDCVar { 131 pthread_mutex_t mutex; 132 }; 133 134 struct _MDSegment { 135 PRInt8 notused; 136 }; 137 138 /* 139 * md-specific cpu structure field 140 */ 141 #define _PR_MD_MAX_OSFD FD_SETSIZE 142 143 struct _MDCPU_Unix { 144 PRCList ioQ; 145 PRUint32 ioq_timeout; 146 PRInt32 ioq_max_osfd; 147 PRInt32 ioq_osfd_cnt; 148 #ifndef _PR_USE_POLL 149 fd_set fd_read_set, fd_write_set, fd_exception_set; 150 PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD], 151 fd_exception_cnt[_PR_MD_MAX_OSFD]; 152 #else 153 struct pollfd *ioq_pollfds; 154 int ioq_pollfds_size; 155 #endif /* _PR_USE_POLL */ 156 }; 157 158 #define _PR_IOQ(_cpu) ((_cpu)->md.md_unix.ioQ) 159 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu)) 160 #define _PR_FD_READ_SET(_cpu) ((_cpu)->md.md_unix.fd_read_set) 161 #define _PR_FD_READ_CNT(_cpu) ((_cpu)->md.md_unix.fd_read_cnt) 162 #define _PR_FD_WRITE_SET(_cpu) ((_cpu)->md.md_unix.fd_write_set) 163 #define _PR_FD_WRITE_CNT(_cpu) ((_cpu)->md.md_unix.fd_write_cnt) 164 #define _PR_FD_EXCEPTION_SET(_cpu) ((_cpu)->md.md_unix.fd_exception_set) 165 #define _PR_FD_EXCEPTION_CNT(_cpu) ((_cpu)->md.md_unix.fd_exception_cnt) 166 #define _PR_IOQ_TIMEOUT(_cpu) ((_cpu)->md.md_unix.ioq_timeout) 167 #define _PR_IOQ_MAX_OSFD(_cpu) ((_cpu)->md.md_unix.ioq_max_osfd) 168 #define _PR_IOQ_OSFD_CNT(_cpu) ((_cpu)->md.md_unix.ioq_osfd_cnt) 169 #define _PR_IOQ_POLLFDS(_cpu) ((_cpu)->md.md_unix.ioq_pollfds) 170 #define _PR_IOQ_POLLFDS_SIZE(_cpu) ((_cpu)->md.md_unix.ioq_pollfds_size) 171 172 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu) 32 173 174 struct _MDCPU { 175 jmp_buf jb; 176 pthread_t pthread; 177 struct _MDCPU_Unix md_unix; 178 }; 179 180 /* 181 #define _MD_NEW_LOCK(lock) PR_SUCCESS 182 #define _MD_FREE_LOCK(lock) 183 #define _MD_LOCK(lock) 184 #define _MD_UNLOCK(lock) 185 */ 186 187 extern pthread_mutex_t _pr_heapLock; 188 189 #define _PR_LOCK(lock) pthread_mutex_lock(lock) 190 191 #define _PR_UNLOCK(lock) pthread_mutex_unlock(lock) 192 193 194 #define _PR_LOCK_HEAP() { \ 195 if (_pr_primordialCPU) { \ 196 _PR_LOCK(_pr_heapLock); \ 197 } 198 199 #define _PR_UNLOCK_HEAP() if (_pr_primordialCPU) { \ 200 _PR_UNLOCK(_pr_heapLock); \ 201 } \ 202 } 203 204 NSPR_API(PRStatus) _MD_NEW_LOCK(struct _MDLock *md); 205 NSPR_API(void) _MD_FREE_LOCK(struct _MDLock *lockp); 206 207 #define _MD_LOCK(_lockp) _PR_LOCK(&(_lockp)->mutex) 208 #define _MD_UNLOCK(_lockp) _PR_UNLOCK(&(_lockp)->mutex) 209 210 #define _MD_INIT_IO() 211 #define _MD_IOQ_LOCK() 212 #define _MD_IOQ_UNLOCK() 213 #define _MD_CHECK_FOR_EXIT() 214 215 NSPR_API(PRStatus) _MD_InitThread(struct PRThread *thread); 216 #define _MD_INIT_THREAD _MD_InitThread 217 #define _MD_INIT_ATTACHED_THREAD _MD_InitThread 218 219 NSPR_API(void) _MD_ExitThread(struct PRThread *thread); 220 #define _MD_EXIT_THREAD _MD_ExitThread 221 222 NSPR_API(void) _MD_SuspendThread(struct PRThread *thread); 223 #define _MD_SUSPEND_THREAD _MD_SuspendThread 224 225 NSPR_API(void) _MD_ResumeThread(struct PRThread *thread); 226 #define _MD_RESUME_THREAD _MD_ResumeThread 227 228 NSPR_API(void) _MD_SuspendCPU(struct _PRCPU *thread); 229 #define _MD_SUSPEND_CPU _MD_SuspendCPU 230 231 NSPR_API(void) _MD_ResumeCPU(struct _PRCPU *thread); 232 #define _MD_RESUME_CPU _MD_ResumeCPU 233 234 #define _MD_BEGIN_SUSPEND_ALL() 235 #define _MD_END_SUSPEND_ALL() 236 #define _MD_BEGIN_RESUME_ALL() 237 #define _MD_END_RESUME_ALL() 238 239 NSPR_API(void) _MD_EarlyInit(void); 240 #define _MD_EARLY_INIT _MD_EarlyInit 241 242 #define _MD_FINAL_INIT _PR_UnixInit 243 244 NSPR_API(void) _MD_InitLocks(void); 245 #define _MD_INIT_LOCKS _MD_InitLocks 246 247 NSPR_API(void) _MD_CleanThread(struct PRThread *thread); 248 #define _MD_CLEAN_THREAD _MD_CleanThread 249 250 NSPR_API(PRStatus) _MD_CreateThread( 251 struct PRThread *thread, 252 void (*start) (void *), 253 PRThreadPriority priority, 254 PRThreadScope scope, 255 PRThreadState state, 256 PRUint32 stackSize); 257 #define _MD_CREATE_THREAD _MD_CreateThread 258 259 extern void _MD_CleanupBeforeExit(void); 260 #define _MD_CLEANUP_BEFORE_EXIT _MD_CleanupBeforeExit 261 262 NSPR_API(void) _MD_InitRunningCPU(struct _PRCPU *cpu); 263 #define _MD_INIT_RUNNING_CPU _MD_InitRunningCPU 264 265 /* The _PR_MD_WAIT_LOCK and _PR_MD_WAKEUP_WAITER functions put to sleep and 266 * awaken a thread which is waiting on a lock or cvar. 267 */ 268 NSPR_API(PRStatus) _MD_wait(struct PRThread *, PRIntervalTime timeout); 269 #define _MD_WAIT _MD_wait 270 271 NSPR_API(PRStatus) _MD_WakeupWaiter(struct PRThread *); 272 #define _MD_WAKEUP_WAITER _MD_WakeupWaiter 273 274 NSPR_API(void) _MD_SetPriority(struct _MDThread *thread, 275 PRThreadPriority newPri); 276 #define _MD_SET_PRIORITY _MD_SetPriority 277 278 #endif /* PTHREADS_USER */ 279 280 #endif /* nspr_pthread_defs_h___ */ 281
