Changes in libcfa/src/bits/locks.hfa [e0f93e0:6ec07e5]

File:

• libcfa/src/bits/locks.hfa (modified) (1 diff)

libcfa/src/bits/locks.hfa

@@ -164 +164 @@
 
         #undef CHECKED
-
-        struct $thread;
-        extern void park( __cfaabi_dbg_ctx_param );
-        extern void unpark( struct $thread * this __cfaabi_dbg_ctx_param2 );
-        static inline struct $thread * active_thread ();
-
-        // Semaphore which only supports a single thread
-        struct single_sem {
-                struct $thread * volatile ptr;
-        };
-
-        static inline {
-                void  ?{}(single_sem & this) {
-                        this.ptr = 0p;
-                }
-
-                void ^?{}(single_sem & this) {}
-
-                bool wait(single_sem & this) {
-                        for() {
-                                struct $thread * expected = this.ptr;
-                                if(expected == 1p) {
-                                        if(__atomic_compare_exchange_n(&this.ptr, &expected, 0p, false, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)) {
-                                                return false;
-                                        }
-                                }
-                                else {
-                                        /* paranoid */ verify( expected == 0p );
-                                        if(__atomic_compare_exchange_n(&this.ptr, &expected, active_thread(), false, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)) {
-                                                park( __cfaabi_dbg_ctx );
-                                                return true;
-                                        }
-                                }
-
-                        }
-                }
-
-                bool post(single_sem & this) {
-                        for() {
-                                struct $thread * expected = this.ptr;
-                                if(expected == 1p) return false;
-                                if(expected == 0p) {
-                                        if(__atomic_compare_exchange_n(&this.ptr, &expected, 1p, false, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)) {
-                                                return false;
-                                        }
-                                }
-                                else {
-                                        if(__atomic_compare_exchange_n(&this.ptr, &expected, 0p, false, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)) {
-                                                unpark( expected __cfaabi_dbg_ctx2 );
-                                                return true;
-                                        }
-                                }
-                        }
-                }
-        }
 #endif