atomic/unix/mutex.c

25 #   define DECLARE_MUTEX_LOCKED(name, mem)  \
26         apr_thread_mutex_t *name = mutex_hash(mem)
33 #   define DECLARE_MUTEX_LOCKED(name, mem)
77 static APR_INLINE apr_thread_mutex_t *mutex_hash(volatile apr_uint32_t *mem)
79     apr_thread_mutex_t *mutex = hash_mutex[ATOMIC_HASH(mem)];
97 APR_DECLARE(apr_uint32_t) apr_atomic_read32(volatile apr_uint32_t *mem)
99     return *mem;
102 APR_DECLARE(void) apr_atomic_set32(volatile apr_uint32_t *mem, apr_uint32_t val)
104     DECLARE_MUTEX_LOCKED(mutex, mem);
106     *mem = val;
111 APR_DECLARE(apr_uint32_t) apr_atomic_add32(volatile apr_uint32_t *mem, apr_uint32_t val)
114     DECLARE_MUTEX_LOCKED(mutex, mem);
116     old_value = *mem;
117     *mem += val;
124 APR_DECLARE(void) apr_atomic_sub32(volatile apr_uint32_t *mem, apr_uint32_t val)
126     DECLARE_MUTEX_LOCKED(mutex, mem);
127     *mem -= val;
131 APR_DECLARE(apr_uint32_t) apr_atomic_inc32(volatile apr_uint32_t *mem)
133     return apr_atomic_add32(mem, 1);
136 APR_DECLARE(int) apr_atomic_dec32(volatile apr_uint32_t *mem)
139     DECLARE_MUTEX_LOCKED(mutex, mem);
141     (*mem)--;
142     new = *mem;
149 APR_DECLARE(apr_uint32_t) apr_atomic_cas32(volatile apr_uint32_t *mem, apr_uint32_t with,
153     DECLARE_MUTEX_LOCKED(mutex, mem);
155     prev = *mem;
157         *mem = with;
165 APR_DECLARE(apr_uint32_t) apr_atomic_xchg32(volatile apr_uint32_t *mem, apr_uint32_t val)
168     DECLARE_MUTEX_LOCKED(mutex, mem);
170     prev = *mem;
171     *mem = val;
178 APR_DECLARE(void*) apr_atomic_casptr(volatile void **mem, void *with, const void *cmp)
181     DECLARE_MUTEX_LOCKED(mutex, *mem);
183     prev = *(void **)mem;
185         *mem = with;
193 APR_DECLARE(void*) apr_atomic_xchgptr(volatile void **mem, void *with)
196     DECLARE_MUTEX_LOCKED(mutex, *mem);
198     prev = *(void **)mem;
199     *mem = with;