Overview
| Comment: | Improve spinlock implementation. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
1edd5313aee03e4be93bb21a44970889 |
| User & Date: | js on 2010-11-06 11:40:24 |
| Other Links: | manifest | tags |
Context
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2010-11-06
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| 11:44 | More reliable cleanup on failure in OFMutex and OFTLSKey. check-in: f1d813ef6a user: js tags: trunk | |
| 11:40 | Improve spinlock implementation. check-in: 1edd5313ae user: js tags: trunk | |
| 11:27 | Add -[OFArray objectsInRange:]. check-in: 009bf787e3 user: js tags: trunk | |
Changes
Modified src/threading.h from [1fc17ada35] to [707f139f43].
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25 26 27 28 29 30 31 | typedef HANDLE of_thread_t; typedef CRITICAL_SECTION of_mutex_t; typedef DWORD of_tlskey_t; #endif #if defined(OF_ATOMIC_OPS) # import "atomic.h" | | > | 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | typedef HANDLE of_thread_t; typedef CRITICAL_SECTION of_mutex_t; typedef DWORD of_tlskey_t; #endif #if defined(OF_ATOMIC_OPS) # import "atomic.h" typedef volatile int of_spinlock_t; # define OF_SPINCOUNT 10 #elif defined(OF_HAVE_PTHREAD_SPINLOCKS) typedef pthread_spinlock_t of_spinlock_t; #else typedef of_mutex_t of_spinlock_t; #endif #if defined(OF_HAVE_PTHREADS) |
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203 204 205 206 207 208 209 |
#endif
}
static OF_INLINE BOOL
of_spinlock_trylock(of_spinlock_t *s)
{
#if defined(OF_ATOMIC_OPS)
| | > > > > | > | > > > < | | 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 |
#endif
}
static OF_INLINE BOOL
of_spinlock_trylock(of_spinlock_t *s)
{
#if defined(OF_ATOMIC_OPS)
return (of_atomic_cmpswap_int(s, 0, 1) ? YES : NO);
#elif defined(OF_HAVE_PTHREAD_SPINLOCKS)
return (pthread_spin_trylock(s) ? NO : YES);
#else
return of_mutex_trylock(s);
#endif
}
static OF_INLINE BOOL
of_spinlock_lock(of_spinlock_t *s)
{
#if defined(OF_ATOMIC_OPS)
# ifdef OF_HAVE_SCHED_YIELD
int i;
for (i = 0; i < OF_SPINCOUNT; i++)
if (of_spinlock_trylock(s))
return YES;
while (!of_spinlock_trylock(s))
sched_yield();
# else
while (!of_spinlock_trylock(s));
# endif
return YES;
#elif defined(OF_HAVE_PTHREAD_SPINLOCKS)
return (pthread_spin_lock(s) ? NO : YES);
#else
return of_mutex_lock(s);
#endif
}
static OF_INLINE BOOL
of_spinlock_unlock(of_spinlock_t *s)
{
#if defined(OF_ATOMIC_OPS)
*s = 0;
return YES;
#elif defined(OF_HAVE_PTHREAD_SPINLOCKS)
return (pthread_spin_unlock(s) ? NO : YES);
#else
return of_mutex_unlock(s);
#endif
}
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