_nspr_pthread.h (8257B)
1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* This Source Code Form is subject to the terms of the Mozilla Public 3 * License, v. 2.0. If a copy of the MPL was not distributed with this 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 5 6 #ifndef nspr_pthread_defs_h___ 7 #define nspr_pthread_defs_h___ 8 9 #include <pthread.h> 10 #include "prthread.h" 11 12 #if defined(PTHREADS_USER) 13 /* 14 ** Thread Local Storage 15 */ 16 extern pthread_key_t current_thread_key; 17 extern pthread_key_t current_cpu_key; 18 extern pthread_key_t last_thread_key; 19 extern pthread_key_t intsoff_key; 20 21 #define _MD_CURRENT_THREAD() \ 22 ((struct PRThread *) pthread_getspecific(current_thread_key)) 23 #define _MD_CURRENT_CPU() \ 24 ((struct _PRCPU *) pthread_getspecific(current_cpu_key)) 25 #define _MD_LAST_THREAD() \ 26 ((struct PRThread *) pthread_getspecific(last_thread_key)) 27 28 #define _MD_SET_CURRENT_THREAD(newval) \ 29 pthread_setspecific(current_thread_key, (void *)newval) 30 31 #define _MD_SET_CURRENT_CPU(newval) \ 32 pthread_setspecific(current_cpu_key, (void *)newval) 33 34 #define _MD_SET_LAST_THREAD(newval) \ 35 pthread_setspecific(last_thread_key, (void *)newval) 36 37 #define _MD_SET_INTSOFF(_val) 38 #define _MD_GET_INTSOFF() 1 39 40 /* 41 ** Initialize the thread context preparing it to execute _main. 42 */ 43 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ 44 PR_BEGIN_MACRO \ 45 *status = PR_TRUE; \ 46 if (SAVE_CONTEXT(_thread)) { \ 47 (*_main)(); \ 48 } \ 49 _MD_SET_THR_SP(_thread, _sp); \ 50 _thread->no_sched = 0; \ 51 PR_END_MACRO 52 53 #define _MD_SWITCH_CONTEXT(_thread) \ 54 PR_BEGIN_MACRO \ 55 PR_ASSERT(_thread->no_sched); \ 56 if (!SAVE_CONTEXT(_thread)) { \ 57 (_thread)->md.errcode = errno; \ 58 _MD_SET_LAST_THREAD(_thread); \ 59 _PR_Schedule(); \ 60 } else { \ 61 (_MD_LAST_THREAD())->no_sched = 0; \ 62 } \ 63 PR_END_MACRO 64 65 /* 66 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT 67 */ 68 #define _MD_RESTORE_CONTEXT(_thread) \ 69 PR_BEGIN_MACRO \ 70 errno = (_thread)->md.errcode; \ 71 _MD_SET_CURRENT_THREAD(_thread); \ 72 _thread->no_sched = 1; \ 73 GOTO_CONTEXT(_thread); \ 74 PR_END_MACRO 75 76 77 /* Machine-dependent (MD) data structures */ 78 79 struct _MDThread { 80 jmp_buf jb; 81 int id; 82 int errcode; 83 pthread_t pthread; 84 pthread_mutex_t pthread_mutex; 85 pthread_cond_t pthread_cond; 86 int wait; 87 }; 88 89 struct _MDThreadStack { 90 PRInt8 notused; 91 }; 92 93 struct _MDLock { 94 pthread_mutex_t mutex; 95 }; 96 97 struct _MDSemaphore { 98 PRInt8 notused; 99 }; 100 101 struct _MDCVar { 102 pthread_mutex_t mutex; 103 }; 104 105 struct _MDSegment { 106 PRInt8 notused; 107 }; 108 109 /* 110 * md-specific cpu structure field 111 */ 112 #define _PR_MD_MAX_OSFD FD_SETSIZE 113 114 struct _MDCPU_Unix { 115 PRCList ioQ; 116 PRUint32 ioq_timeout; 117 PRInt32 ioq_max_osfd; 118 PRInt32 ioq_osfd_cnt; 119 #ifndef _PR_USE_POLL 120 fd_set fd_read_set, fd_write_set, fd_exception_set; 121 PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD], 122 fd_exception_cnt[_PR_MD_MAX_OSFD]; 123 #else 124 struct pollfd *ioq_pollfds; 125 int ioq_pollfds_size; 126 #endif /* _PR_USE_POLL */ 127 }; 128 129 #define _PR_IOQ(_cpu) ((_cpu)->md.md_unix.ioQ) 130 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu)) 131 #define _PR_FD_READ_SET(_cpu) ((_cpu)->md.md_unix.fd_read_set) 132 #define _PR_FD_READ_CNT(_cpu) ((_cpu)->md.md_unix.fd_read_cnt) 133 #define _PR_FD_WRITE_SET(_cpu) ((_cpu)->md.md_unix.fd_write_set) 134 #define _PR_FD_WRITE_CNT(_cpu) ((_cpu)->md.md_unix.fd_write_cnt) 135 #define _PR_FD_EXCEPTION_SET(_cpu) ((_cpu)->md.md_unix.fd_exception_set) 136 #define _PR_FD_EXCEPTION_CNT(_cpu) ((_cpu)->md.md_unix.fd_exception_cnt) 137 #define _PR_IOQ_TIMEOUT(_cpu) ((_cpu)->md.md_unix.ioq_timeout) 138 #define _PR_IOQ_MAX_OSFD(_cpu) ((_cpu)->md.md_unix.ioq_max_osfd) 139 #define _PR_IOQ_OSFD_CNT(_cpu) ((_cpu)->md.md_unix.ioq_osfd_cnt) 140 #define _PR_IOQ_POLLFDS(_cpu) ((_cpu)->md.md_unix.ioq_pollfds) 141 #define _PR_IOQ_POLLFDS_SIZE(_cpu) ((_cpu)->md.md_unix.ioq_pollfds_size) 142 143 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu) 32 144 145 struct _MDCPU { 146 jmp_buf jb; 147 pthread_t pthread; 148 struct _MDCPU_Unix md_unix; 149 }; 150 151 /* 152 #define _MD_NEW_LOCK(lock) PR_SUCCESS 153 #define _MD_FREE_LOCK(lock) 154 #define _MD_LOCK(lock) 155 #define _MD_UNLOCK(lock) 156 */ 157 158 extern pthread_mutex_t _pr_heapLock; 159 160 #define _PR_LOCK(lock) pthread_mutex_lock(lock) 161 162 #define _PR_UNLOCK(lock) pthread_mutex_unlock(lock) 163 164 165 #define _PR_LOCK_HEAP() { \ 166 if (_pr_primordialCPU) { \ 167 _PR_LOCK(_pr_heapLock); \ 168 } 169 170 #define _PR_UNLOCK_HEAP() if (_pr_primordialCPU) { \ 171 _PR_UNLOCK(_pr_heapLock); \ 172 } \ 173 } 174 175 NSPR_API(PRStatus) _MD_NEW_LOCK(struct _MDLock *md); 176 NSPR_API(void) _MD_FREE_LOCK(struct _MDLock *lockp); 177 178 #define _MD_LOCK(_lockp) _PR_LOCK(&(_lockp)->mutex) 179 #define _MD_UNLOCK(_lockp) _PR_UNLOCK(&(_lockp)->mutex) 180 181 #define _MD_INIT_IO() 182 #define _MD_IOQ_LOCK() 183 #define _MD_IOQ_UNLOCK() 184 #define _MD_CHECK_FOR_EXIT() 185 186 NSPR_API(PRStatus) _MD_InitThread(struct PRThread *thread); 187 #define _MD_INIT_THREAD _MD_InitThread 188 #define _MD_INIT_ATTACHED_THREAD _MD_InitThread 189 190 NSPR_API(void) _MD_ExitThread(struct PRThread *thread); 191 #define _MD_EXIT_THREAD _MD_ExitThread 192 193 NSPR_API(void) _MD_SuspendThread(struct PRThread *thread); 194 #define _MD_SUSPEND_THREAD _MD_SuspendThread 195 196 NSPR_API(void) _MD_ResumeThread(struct PRThread *thread); 197 #define _MD_RESUME_THREAD _MD_ResumeThread 198 199 NSPR_API(void) _MD_SuspendCPU(struct _PRCPU *thread); 200 #define _MD_SUSPEND_CPU _MD_SuspendCPU 201 202 NSPR_API(void) _MD_ResumeCPU(struct _PRCPU *thread); 203 #define _MD_RESUME_CPU _MD_ResumeCPU 204 205 #define _MD_BEGIN_SUSPEND_ALL() 206 #define _MD_END_SUSPEND_ALL() 207 #define _MD_BEGIN_RESUME_ALL() 208 #define _MD_END_RESUME_ALL() 209 210 NSPR_API(void) _MD_EarlyInit(void); 211 #define _MD_EARLY_INIT _MD_EarlyInit 212 213 #define _MD_FINAL_INIT _PR_UnixInit 214 215 NSPR_API(void) _MD_InitLocks(void); 216 #define _MD_INIT_LOCKS _MD_InitLocks 217 218 NSPR_API(void) _MD_CleanThread(struct PRThread *thread); 219 #define _MD_CLEAN_THREAD _MD_CleanThread 220 221 NSPR_API(PRStatus) _MD_CreateThread( 222 struct PRThread *thread, 223 void (*start) (void *), 224 PRThreadPriority priority, 225 PRThreadScope scope, 226 PRThreadState state, 227 PRUint32 stackSize); 228 #define _MD_CREATE_THREAD _MD_CreateThread 229 230 extern void _MD_CleanupBeforeExit(void); 231 #define _MD_CLEANUP_BEFORE_EXIT _MD_CleanupBeforeExit 232 233 NSPR_API(void) _MD_InitRunningCPU(struct _PRCPU *cpu); 234 #define _MD_INIT_RUNNING_CPU _MD_InitRunningCPU 235 236 /* The _PR_MD_WAIT_LOCK and _PR_MD_WAKEUP_WAITER functions put to sleep and 237 * awaken a thread which is waiting on a lock or cvar. 238 */ 239 NSPR_API(PRStatus) _MD_wait(struct PRThread *, PRIntervalTime timeout); 240 #define _MD_WAIT _MD_wait 241 242 NSPR_API(PRStatus) _MD_WakeupWaiter(struct PRThread *); 243 #define _MD_WAKEUP_WAITER _MD_WakeupWaiter 244 245 NSPR_API(void) _MD_SetPriority(struct _MDThread *thread, 246 PRThreadPriority newPri); 247 #define _MD_SET_PRIORITY _MD_SetPriority 248 249 #endif /* PTHREADS_USER */ 250 251 #endif /* nspr_pthread_defs_h___ */