#ifndef __PROMISE_H__
#define __PROMISE_H__
+
#include <inttypes.h>
+#include <vector>
+#include "modeltypes.h"
+#include "mymemory.h"
class ModelAction;
+struct future_value {
+ uint64_t value;
+ modelclock_t expiration;
+ thread_id_t tid;
+};
+
class Promise {
public:
- Promise(ModelAction * act, uint64_t value);
- ModelAction * get_action() { return read; }
- int increment_threads() { return ++numthreads; }
- uint64_t get_value() { return value; }
+ Promise(ModelAction *read, struct future_value fv);
+ ModelAction * get_action() const { return read; }
+ bool eliminate_thread(thread_id_t tid);
+ void add_thread(thread_id_t tid);
+ bool thread_is_available(thread_id_t tid) const;
+ bool has_failed() const;
+ void set_write(const ModelAction *act) { write = act; }
+ const ModelAction * get_write() const { return write; }
+ int get_num_available_threads() const { return num_available_threads; }
+ bool is_compatible(const ModelAction *act) const;
+ bool is_compatible_exclusive(const ModelAction *act) const;
+
+ modelclock_t get_expiration() const { return fv.expiration; }
+ uint64_t get_value() const { return fv.value; }
+ struct future_value get_fv() const { return fv; }
+
+ void print() const;
+ SNAPSHOTALLOC
private:
- uint64_t value;
- ModelAction *read;
- unsigned int numthreads;
+ /** @brief Thread ID(s) for thread(s) that potentially can satisfy this
+ * promise */
+ std::vector< bool, SnapshotAlloc<bool> > available_thread;
+
+ int num_available_threads;
+
+ const future_value fv;
+
+ /** @brief The action which reads a promised value */
+ ModelAction * const read;
+
+ const ModelAction *write;
};
#endif