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| 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_pth_defs_h_ | |
| 36 #define nspr_pth_defs_h_ | |
| 37 | |
| 38 /* | |
| 39 ** Appropriate definitions of entry points not used in a pthreads world | |
| 40 */ | |
| 41 #define _PR_MD_BLOCK_CLOCK_INTERRUPTS() | |
| 42 #define _PR_MD_UNBLOCK_CLOCK_INTERRUPTS() | |
| 43 #define _PR_MD_DISABLE_CLOCK_INTERRUPTS() | |
| 44 #define _PR_MD_ENABLE_CLOCK_INTERRUPTS() | |
| 45 | |
| 46 /* In good standards fashion, the DCE threads (based on posix-4) are not | |
| 47 * quite the same as newer posix implementations. These are mostly name | |
| 48 * changes and small differences, so macros usually do the trick | |
| 49 */ | |
| 50 #ifdef _PR_DCETHREADS | |
| 51 #define _PT_PTHREAD_MUTEXATTR_INIT pthread_mutexattr_create | |
| 52 #define _PT_PTHREAD_MUTEXATTR_DESTROY pthread_mutexattr_delete | |
| 53 #define _PT_PTHREAD_MUTEX_INIT(m, a) pthread_mutex_init(&(m), a) | |
| 54 #define _PT_PTHREAD_MUTEX_IS_LOCKED(m) (0 == pthread_mutex_trylock(&(m))) | |
| 55 #define _PT_PTHREAD_CONDATTR_INIT pthread_condattr_create | |
| 56 #define _PT_PTHREAD_COND_INIT(m, a) pthread_cond_init(&(m), a) | |
| 57 #define _PT_PTHREAD_CONDATTR_DESTROY pthread_condattr_delete | |
| 58 | |
| 59 /* Notes about differences between DCE threads and pthreads 10: | |
| 60 * 1. pthread_mutex_trylock returns 1 when it locks the mutex | |
| 61 * 0 when it does not. The latest pthreads has a set of errno-like | |
| 62 * return values. | |
| 63 * 2. return values from pthread_cond_timedwait are different. | |
| 64 * | |
| 65 * | |
| 66 * | |
| 67 */ | |
| 68 #elif defined(BSDI) | |
| 69 /* | |
| 70 * Mutex and condition attributes are not supported. The attr | |
| 71 * argument to pthread_mutex_init() and pthread_cond_init() must | |
| 72 * be passed as NULL. | |
| 73 * | |
| 74 * The memset calls in _PT_PTHREAD_MUTEX_INIT and _PT_PTHREAD_COND_INIT | |
| 75 * are to work around BSDI's using a single bit to indicate a mutex | |
| 76 * or condition variable is initialized. This entire BSDI section | |
| 77 * will go away when BSDI releases updated threads libraries for | |
| 78 * BSD/OS 3.1 and 4.0. | |
| 79 */ | |
| 80 #define _PT_PTHREAD_MUTEXATTR_INIT(x) 0 | |
| 81 #define _PT_PTHREAD_MUTEXATTR_DESTROY(x) /* */ | |
| 82 #define _PT_PTHREAD_MUTEX_INIT(m, a) (memset(&(m), 0, sizeof(m)), \ | |
| 83 pthread_mutex_init(&(m), NULL)) | |
| 84 #define _PT_PTHREAD_MUTEX_IS_LOCKED(m) (EBUSY == pthread_mutex_trylock(&(m))) | |
| 85 #define _PT_PTHREAD_CONDATTR_INIT(x) 0 | |
| 86 #define _PT_PTHREAD_CONDATTR_DESTROY(x) /* */ | |
| 87 #define _PT_PTHREAD_COND_INIT(m, a) (memset(&(m), 0, sizeof(m)), \ | |
| 88 pthread_cond_init(&(m), NULL)) | |
| 89 #else | |
| 90 #define _PT_PTHREAD_MUTEXATTR_INIT pthread_mutexattr_init | |
| 91 #define _PT_PTHREAD_MUTEXATTR_DESTROY pthread_mutexattr_destroy | |
| 92 #define _PT_PTHREAD_MUTEX_INIT(m, a) pthread_mutex_init(&(m), &(a)) | |
| 93 #define _PT_PTHREAD_MUTEX_IS_LOCKED(m) (EBUSY == pthread_mutex_trylock(&(m))) | |
| 94 #if defined(DARWIN) | |
| 95 #define _PT_PTHREAD_CONDATTR_INIT(x) 0 | |
| 96 #else | |
| 97 #define _PT_PTHREAD_CONDATTR_INIT pthread_condattr_init | |
| 98 #endif | |
| 99 #define _PT_PTHREAD_CONDATTR_DESTROY pthread_condattr_destroy | |
| 100 #define _PT_PTHREAD_COND_INIT(m, a) pthread_cond_init(&(m), &(a)) | |
| 101 #endif | |
| 102 | |
| 103 /* The pthreads standard does not specify an invalid value for the | |
| 104 * pthread_t handle. (0 is usually an invalid pthread identifier | |
| 105 * but there are exceptions, for example, DG/UX.) These macros | |
| 106 * define a way to set the handle to or compare the handle with an | |
| 107 * invalid identifier. These macros are not portable and may be | |
| 108 * more of a problem as we adapt to more pthreads implementations. | |
| 109 * They are only used in the PRMonitor functions. Do not use them | |
| 110 * in new code. | |
| 111 * | |
| 112 * Unfortunately some of our clients depend on certain properties | |
| 113 * of our PRMonitor implementation, preventing us from replacing | |
| 114 * it by a portable implementation. | |
| 115 * - High-performance servers like the fact that PR_EnterMonitor | |
| 116 * only calls PR_Lock and PR_ExitMonitor only calls PR_Unlock. | |
| 117 * (A portable implementation would use a PRLock and a PRCondVar | |
| 118 * to implement the recursive lock in a monitor and call both | |
| 119 * PR_Lock and PR_Unlock in PR_EnterMonitor and PR_ExitMonitor.) | |
| 120 * Unfortunately this forces us to read the monitor owner field | |
| 121 * without holding a lock. | |
| 122 * - One way to make it safe to read the monitor owner field | |
| 123 * without holding a lock is to make that field a PRThread* | |
| 124 * (one should be able to read a pointer with a single machine | |
| 125 * instruction). However, PR_GetCurrentThread calls calloc if | |
| 126 * it is called by a thread that was not created by NSPR. The | |
| 127 * malloc tracing tools in the Mozilla client use PRMonitor for | |
| 128 * locking in their malloc, calloc, and free functions. If | |
| 129 * PR_EnterMonitor calls any of these functions, infinite | |
| 130 * recursion ensues. | |
| 131 */ | |
| 132 #if defined(_PR_DCETHREADS) | |
| 133 #define _PT_PTHREAD_INVALIDATE_THR_HANDLE(t) \ | |
| 134 memset(&(t), 0, sizeof(pthread_t)) | |
| 135 #define _PT_PTHREAD_THR_HANDLE_IS_INVALID(t) \ | |
| 136 (!memcmp(&(t), &pt_zero_tid, sizeof(pthread_t))) | |
| 137 #define _PT_PTHREAD_COPY_THR_HANDLE(st, dt) (dt) = (st) | |
| 138 #elif defined(IRIX) || defined(OSF1) || defined(AIX) || defined(SOLARIS) \ | |
| 139 || defined(HPUX) || defined(LINUX) || defined(FREEBSD) \ | |
| 140 || defined(NETBSD) || defined(OPENBSD) || defined(BSDI) \ | |
| 141 || defined(VMS) || defined(NTO) || defined(DARWIN) \ | |
| 142 || defined(UNIXWARE) | |
| 143 #define _PT_PTHREAD_INVALIDATE_THR_HANDLE(t) (t) = 0 | |
| 144 #define _PT_PTHREAD_THR_HANDLE_IS_INVALID(t) (t) == 0 | |
| 145 #define _PT_PTHREAD_COPY_THR_HANDLE(st, dt) (dt) = (st) | |
| 146 #else | |
| 147 #error "pthreads is not supported for this architecture" | |
| 148 #endif | |
| 149 | |
| 150 #if defined(_PR_DCETHREADS) | |
| 151 #define _PT_PTHREAD_ATTR_INIT pthread_attr_create | |
| 152 #define _PT_PTHREAD_ATTR_DESTROY pthread_attr_delete | |
| 153 #define _PT_PTHREAD_CREATE(t, a, f, r) pthread_create(t, a, f, r) | |
| 154 #define _PT_PTHREAD_KEY_CREATE pthread_keycreate | |
| 155 #define _PT_PTHREAD_ATTR_SETSCHEDPOLICY pthread_attr_setsched | |
| 156 #define _PT_PTHREAD_ATTR_GETSTACKSIZE(a, s) \ | |
| 157 (*(s) = pthread_attr_getstacksize(*(a)), 0) | |
| 158 #define _PT_PTHREAD_GETSPECIFIC(k, r) \ | |
| 159 pthread_getspecific((k), (pthread_addr_t *) &(r)) | |
| 160 #elif defined(_PR_PTHREADS) | |
| 161 #define _PT_PTHREAD_ATTR_INIT pthread_attr_init | |
| 162 #define _PT_PTHREAD_ATTR_DESTROY pthread_attr_destroy | |
| 163 #define _PT_PTHREAD_CREATE(t, a, f, r) pthread_create(t, &a, f, r) | |
| 164 #define _PT_PTHREAD_KEY_CREATE pthread_key_create | |
| 165 #define _PT_PTHREAD_ATTR_SETSCHEDPOLICY pthread_attr_setschedpolicy | |
| 166 #define _PT_PTHREAD_ATTR_GETSTACKSIZE(a, s) pthread_attr_getstacksize(a, s) | |
| 167 #define _PT_PTHREAD_GETSPECIFIC(k, r) (r) = pthread_getspecific(k) | |
| 168 #else | |
| 169 #error "Cannot determine pthread strategy" | |
| 170 #endif | |
| 171 | |
| 172 #if defined(_PR_DCETHREADS) | |
| 173 #define _PT_PTHREAD_EXPLICIT_SCHED _PT_PTHREAD_DEFAULT_SCHED | |
| 174 #endif | |
| 175 | |
| 176 /* | |
| 177 * pthread_mutex_trylock returns different values in DCE threads and | |
| 178 * pthreads. | |
| 179 */ | |
| 180 #if defined(_PR_DCETHREADS) | |
| 181 #define PT_TRYLOCK_SUCCESS 1 | |
| 182 #define PT_TRYLOCK_BUSY 0 | |
| 183 #else | |
| 184 #define PT_TRYLOCK_SUCCESS 0 | |
| 185 #define PT_TRYLOCK_BUSY EBUSY | |
| 186 #endif | |
| 187 | |
| 188 /* | |
| 189 * These platforms don't have sigtimedwait() | |
| 190 */ | |
| 191 #if (defined(AIX) && !defined(AIX4_3_PLUS)) || defined(LINUX) \ | |
| 192 || defined(FREEBSD) || defined(NETBSD) || defined(OPENBSD) \ | |
| 193 || defined(BSDI) || defined(VMS) || defined(UNIXWARE) \ | |
| 194 || defined(DARWIN) | |
| 195 #define PT_NO_SIGTIMEDWAIT | |
| 196 #endif | |
| 197 | |
| 198 /* | |
| 199 * These platforms don't have pthread_kill() | |
| 200 */ | |
| 201 #if defined(DARWIN) | |
| 202 #define pthread_kill(thread, sig) ENOSYS | |
| 203 #endif | |
| 204 | |
| 205 #if defined(OSF1) || defined(VMS) | |
| 206 #define PT_PRIO_MIN PRI_OTHER_MIN | |
| 207 #define PT_PRIO_MAX PRI_OTHER_MAX | |
| 208 #elif defined(IRIX) | |
| 209 #include <sys/sched.h> | |
| 210 #define PT_PRIO_MIN PX_PRIO_MIN | |
| 211 #define PT_PRIO_MAX PX_PRIO_MAX | |
| 212 #elif defined(AIX) | |
| 213 #include <sys/priv.h> | |
| 214 #include <sys/sched.h> | |
| 215 #ifndef PTHREAD_CREATE_JOINABLE | |
| 216 #define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED | |
| 217 #endif | |
| 218 #define PT_PRIO_MIN DEFAULT_PRIO | |
| 219 #define PT_PRIO_MAX DEFAULT_PRIO | |
| 220 #elif defined(HPUX) | |
| 221 | |
| 222 #if defined(_PR_DCETHREADS) | |
| 223 #define PT_PRIO_MIN PRI_OTHER_MIN | |
| 224 #define PT_PRIO_MAX PRI_OTHER_MAX | |
| 225 #else /* defined(_PR_DCETHREADS) */ | |
| 226 #include <sys/sched.h> | |
| 227 #define PT_PRIO_MIN sched_get_priority_min(SCHED_OTHER) | |
| 228 #define PT_PRIO_MAX sched_get_priority_max(SCHED_OTHER) | |
| 229 #endif /* defined(_PR_DCETHREADS) */ | |
| 230 | |
| 231 #elif defined(LINUX) || defined(FREEBSD) | |
| 232 #define PT_PRIO_MIN sched_get_priority_min(SCHED_OTHER) | |
| 233 #define PT_PRIO_MAX sched_get_priority_max(SCHED_OTHER) | |
| 234 #elif defined(NTO) | |
| 235 /* | |
| 236 * Neutrino has functions that return the priority range but | |
| 237 * they return invalid numbers, so I just hard coded these here | |
| 238 * for now. Jerry.Kirk@Nexarecorp.com | |
| 239 */ | |
| 240 #define PT_PRIO_MIN 0 | |
| 241 #define PT_PRIO_MAX 30 | |
| 242 #elif defined(SOLARIS) | |
| 243 /* | |
| 244 * Solaris doesn't seem to have macros for the min/max priorities. | |
| 245 * The range of 0-127 is mentioned in the pthread_setschedparam(3T) | |
| 246 * man pages, and pthread_setschedparam indeed allows 0-127. However, | |
| 247 * pthread_attr_setschedparam does not allow 0; it allows 1-127. | |
| 248 */ | |
| 249 #define PT_PRIO_MIN 1 | |
| 250 #define PT_PRIO_MAX 127 | |
| 251 #elif defined(OPENBSD) | |
| 252 #define PT_PRIO_MIN 0 | |
| 253 #define PT_PRIO_MAX 31 | |
| 254 #elif defined(NETBSD) \ | |
| 255 || defined(BSDI) || defined(DARWIN) || defined(UNIXWARE) /* XXX */ | |
| 256 #define PT_PRIO_MIN 0 | |
| 257 #define PT_PRIO_MAX 126 | |
| 258 #else | |
| 259 #error "pthreads is not supported for this architecture" | |
| 260 #endif | |
| 261 | |
| 262 /* | |
| 263 * The _PT_PTHREAD_YIELD function is called from a signal handler. | |
| 264 * Needed for garbage collection -- Look at PR_Suspend/PR_Resume | |
| 265 * implementation. | |
| 266 */ | |
| 267 #if defined(_PR_DCETHREADS) | |
| 268 #define _PT_PTHREAD_YIELD() pthread_yield() | |
| 269 #elif defined(OSF1) || defined(VMS) | |
| 270 /* | |
| 271 * sched_yield can't be called from a signal handler. Must use | |
| 272 * the _np version. | |
| 273 */ | |
| 274 #define _PT_PTHREAD_YIELD() pthread_yield_np() | |
| 275 #elif defined(AIX) | |
| 276 extern int (*_PT_aix_yield_fcn)(); | |
| 277 #define _PT_PTHREAD_YIELD() (*_PT_aix_yield_fcn)() | |
| 278 #elif defined(IRIX) | |
| 279 #include <time.h> | |
| 280 #define _PT_PTHREAD_YIELD() \ | |
| 281 PR_BEGIN_MACRO \ | |
| 282 struct timespec onemillisec = {0}; \ | |
| 283 onemillisec.tv_nsec = 1000000L; \ | |
| 284 nanosleep(&onemillisec,NULL); \ | |
| 285 PR_END_MACRO | |
| 286 #elif defined(HPUX) || defined(LINUX) || defined(SOLARIS) \ | |
| 287 || defined(FREEBSD) || defined(NETBSD) || defined(OPENBSD) \ | |
| 288 || defined(BSDI) || defined(NTO) || defined(DARWIN) \ | |
| 289 || defined(UNIXWARE) | |
| 290 #define _PT_PTHREAD_YIELD() sched_yield() | |
| 291 #else | |
| 292 #error "Need to define _PT_PTHREAD_YIELD for this platform" | |
| 293 #endif | |
| 294 | |
| 295 #endif /* nspr_pth_defs_h_ */ | |
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Chromium Code Reviews
Issue 665543002:
Remove third_party/npapi/npspy. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master