Fix snapshot code

[model-checker.git] / promise.h

diff --git a/promise.h b/promise.h
index 35515d24b2da913b387e5ec06b786a83e3d43877..e306e14a261aafe8d38b0753524cd194dfc730f0 100644 (file)
--- a/promise.h
+++ b/promise.h
@@ -8,10 +8,13 @@
 #define __PROMISE_H__
 
 #include <inttypes.h>
-#include "threads-model.h"
 
-#include "model.h"
 #include "modeltypes.h"
+#include "mymemory.h"
+#include "stl-model.h"
+
+class ModelAction;
+class ModelExecution;
 
 struct future_value {
        uint64_t value;
@@ -21,40 +24,54 @@ struct future_value {
 
 class Promise {
  public:
-       Promise(ModelAction *act, struct future_value fv) :
-               num_available_threads(0),
-               value(fv.value),
-               expiration(fv.expiration),
-               read(act),
-               write(NULL)
-       {
-               add_thread(fv.tid);
-               eliminate_thread(act->get_tid());
-       }
-       modelclock_t get_expiration() const { return expiration; }
-       ModelAction * get_action() const { return read; }
+       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;
-       uint64_t get_value() const { return value; }
        void set_write(const ModelAction *act) { write = act; }
-       const ModelAction * get_write() { return write; }
-       int get_num_available_threads() { return num_available_threads; }
+       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 */
-       std::vector< bool, SnapshotAlloc<bool> > available_thread;
+       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 uint64_t value;
-       const modelclock_t expiration;
-       ModelAction * const read;
        const ModelAction *write;
 };