+++ /dev/null
-/** @file promise.h
- *
- * @brief Promise class --- tracks future obligations for execution
- * related to weakly ordered writes.
- */
-
-#ifndef __PROMISE_H__
-#define __PROMISE_H__
-
-#include <inttypes.h>
-
-#include "modeltypes.h"
-#include "mymemory.h"
-#include "stl-model.h"
-
-class ModelAction;
-class ModelExecution;
-
-struct future_value {
- uint64_t value;
- modelclock_t expiration;
- thread_id_t tid;
-};
-
-class Promise {
- public:
- Promise(const ModelExecution *execution, ModelAction *read, struct future_value fv);
- bool add_reader(ModelAction *reader);
- ModelAction * get_reader(unsigned int i) const;
- unsigned int get_num_readers() const { return readers.size(); }
- bool eliminate_thread(thread_id_t tid);
- void add_thread(thread_id_t tid);
- bool thread_is_available(thread_id_t tid) const;
- bool thread_was_available(thread_id_t tid) const;
- unsigned int max_available_thread_idx() 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; }
- int get_num_was_available_threads() const { return num_was_available_threads; }
- bool is_compatible(const ModelAction *act) const;
- bool is_compatible_exclusive(const ModelAction *act) const;
- bool same_value(const ModelAction *write) const;
- bool same_location(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; }
-
- int get_index() const;
-
- void print() const;
-
- bool equals(const Promise *x) const { return this == x; }
- bool equals(const ModelAction *x) const { return false; }
-
- SNAPSHOTALLOC
- private:
- /** @brief The execution which created this Promise */
- const ModelExecution *execution;
-
- /** @brief Thread ID(s) for thread(s) that potentially can satisfy this
- * promise */
- SnapVector<bool> available_thread;
- SnapVector<bool> was_available_thread;
-
- int num_available_threads;
- int num_was_available_threads;
-
- const future_value fv;
-
- /** @brief The action(s) which read the promised future value */
- SnapVector<ModelAction *> readers;
-
- const ModelAction *write;
-};
-
-#endif