atomic/unix/mutex.c

24 #   define DECLARE_MUTEX_LOCKED(name, mem)  \
25         apr_thread_mutex_t *name = mutex_hash(mem)
32 #   define DECLARE_MUTEX_LOCKED(name, mem)
76 static APR_INLINE apr_thread_mutex_t *mutex_hash(volatile apr_uint32_t *mem)
78     apr_thread_mutex_t *mutex = hash_mutex[ATOMIC_HASH(mem)];
96 APR_DECLARE(apr_uint32_t) apr_atomic_read32(volatile apr_uint32_t *mem)
98     return *mem;
101 APR_DECLARE(void) apr_atomic_set32(volatile apr_uint32_t *mem, apr_uint32_t val)
103     DECLARE_MUTEX_LOCKED(mutex, mem);
105     *mem = val;
110 APR_DECLARE(apr_uint32_t) apr_atomic_add32(volatile apr_uint32_t *mem, apr_uint32_t val)
113     DECLARE_MUTEX_LOCKED(mutex, mem);
115     old_value = *mem;
116     *mem += val;
123 APR_DECLARE(void) apr_atomic_sub32(volatile apr_uint32_t *mem, apr_uint32_t val)
125     DECLARE_MUTEX_LOCKED(mutex, mem);
126     *mem -= val;
130 APR_DECLARE(apr_uint32_t) apr_atomic_inc32(volatile apr_uint32_t *mem)
132     return apr_atomic_add32(mem, 1);
135 APR_DECLARE(int) apr_atomic_dec32(volatile apr_uint32_t *mem)
138     DECLARE_MUTEX_LOCKED(mutex, mem);
140     (*mem)--;
141     new = *mem;
148 APR_DECLARE(apr_uint32_t) apr_atomic_cas32(volatile apr_uint32_t *mem, apr_uint32_t with,
152     DECLARE_MUTEX_LOCKED(mutex, mem);
154     prev = *mem;
156         *mem = with;
164 APR_DECLARE(apr_uint32_t) apr_atomic_xchg32(volatile apr_uint32_t *mem, apr_uint32_t val)
167     DECLARE_MUTEX_LOCKED(mutex, mem);
169     prev = *mem;
170     *mem = val;
177 APR_DECLARE(void*) apr_atomic_casptr(volatile void **mem, void *with, const void *cmp)
180     DECLARE_MUTEX_LOCKED(mutex, *mem);
182     prev = *(void **)mem;
184         *mem = with;
192 APR_DECLARE(void*) apr_atomic_xchgptr(volatile void **mem, void *with)
195     DECLARE_MUTEX_LOCKED(mutex, *mem);
197     prev = *(void **)mem;
198     *mem = with;