Changes in src/libcfa/concurrency/kernel [9e45e46:e15df4c]

File:

• src/libcfa/concurrency/kernel (modified) (4 diffs)

src/libcfa/concurrency/kernel

@@ -30 +30 @@
 struct cluster {
         simple_thread_list ready_queue;
-        // pthread_spinlock_t lock;
+        pthread_spinlock_t lock;
 };
 
@@ -38 +38 @@
 //-----------------------------------------------------------------------------
 // Processor
-enum ProcessorAction { 
-        Reschedule,
-        NoAction
-};
-
 struct processor {
-        struct processorCtx_t * runner;
+        struct processorCtx_t * ctx;
         cluster * cltr;
         coroutine * current_coroutine;
@@ -51 +46 @@
         simple_lock lock;
         volatile bool terminated;
-        ProcessorAction thread_action;
 };
 
@@ -68 +62 @@
 void unlock( simple_lock * );
 
+struct pthread_spinlock_guard {
+        pthread_spinlock_t * lock;
+};
+
+static inline void ?{}( pthread_spinlock_guard * this, pthread_spinlock_t * lock ) {
+        this->lock = lock;
+        pthread_spin_lock( this->lock );
+}
+
+static inline void ^?{}( pthread_spinlock_guard * this ) {
+        pthread_spin_unlock( this->lock );
+}
+
+// //Simple spinlock implementation from 
+// //http://stackoverflow.com/questions/1383363/is-my-spin-lock-implementation-correct-and-optimal
+// //Not optimal but correct
+// #define VOL 
+
+// struct simple_spinlock {
+//      VOL int lock;
+// };
+
+// extern VOL int __sync_lock_test_and_set( VOL int *, VOL int);
+// extern void __sync_synchronize();
+
+// static inline void lock( simple_spinlock * this ) {
+//     while (__sync_lock_test_and_set(&this->lock, 1)) {
+//         // Do nothing. This GCC builtin instruction
+//         // ensures memory barrier.
+//     }
+// }
+
+// static inline void unlock( simple_spinlock * this ) {
+//     __sync_synchronize(); // Memory barrier.
+//     this->lock = 0;
+// }
+
 #endif //KERNEL_H