Overview
| Comment: | Add of_atomic_cmpswap32 and spinlocks to atomic.h. |
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| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
212482d8c68cdca3d2cf64dbff7f1496 |
| User & Date: | js on 2010-01-25 22:39:46 |
| Other Links: | manifest | tags |
Context
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2010-01-25
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| 22:40 | Use spinlocks in objc_properties.m. check-in: 2be191ec57 user: js tags: trunk | |
| 22:39 | Add of_atomic_cmpswap32 and spinlocks to atomic.h. check-in: 212482d8c6 user: js tags: trunk | |
| 22:34 | clang does not reuse constant strings, thus fix test to use the same. check-in: 612a252fdf user: js tags: trunk | |
Changes
Modified src/atomic.h from [10a1c95236] to [ac71df6e7f].
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10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | */ #import "objfw-defs.h" #if !defined(OF_THREADS) # define of_atomic_inc32(p) ++(*p) # define of_atomic_dec32(p) --(*p) #elif defined(OF_HAVE_GCC_ATOMIC_OPS) # define of_atomic_inc32(p) __sync_add_and_fetch(p, 1) # define of_atomic_dec32(p) __sync_sub_and_fetch(p, 1) #elif defined(OF_HAVE_LIBKERN_OSATOMIC_H) # include <libkern/OSAtomic.h> # define of_atomic_inc32(p) OSAtomicIncrement32Barrier((int32_t*)(p)) # define of_atomic_dec32(p) OSAtomicDecrement32Barrier((int32_t*)(p)) #else # error No atomic operations available! #endif | > > > > > > > > > > > > > | 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | */ #import "objfw-defs.h" #if !defined(OF_THREADS) # define of_atomic_inc32(p) ++(*p) # define of_atomic_dec32(p) --(*p) # define of_atomic_cmpswap32(p, o, n) (*p == o ? ((*p = n) ? 1 : 1) : 0) #elif defined(OF_HAVE_GCC_ATOMIC_OPS) # define of_atomic_inc32(p) __sync_add_and_fetch(p, 1) # define of_atomic_dec32(p) __sync_sub_and_fetch(p, 1) # define of_atomic_cmpswap32(p, o, n) __sync_bool_compare_and_swap(p, o, n) #elif defined(OF_HAVE_LIBKERN_OSATOMIC_H) # include <libkern/OSAtomic.h> # define of_atomic_inc32(p) OSAtomicIncrement32Barrier((int32_t*)(p)) # define of_atomic_dec32(p) OSAtomicDecrement32Barrier((int32_t*)(p)) # define of_atomic_cmpswap32(p, o, n) \ OSAtomicCompareAndSwap32Barrier(o, n, (int32_t*)p) #else # error No atomic operations available! #endif typedef int32_t of_spinlock_t; #ifdef OF_THREADS # define of_spinlock_lock(s) while (!of_atomic_cmpswap32(&s, 0, 1)); # define of_spinlock_unlock(s) s = 0 #else # define of_spinlock_lock(s) # define of_spinlock_unlock(s) #endif |