threads: correct 'swap()' documentation

[model-checker.git] / action.h

diff --git a/action.h b/action.h
index 36c72079b165a6a7462d5a32698e61dbdef12dbd..ffe60dc5e8e9a33e18a59123c77d6a6fa09f505b 100644 (file)
--- a/action.h
+++ b/action.h
@@ -9,9 +9,16 @@
 #include <cstddef>
 
 #include "threads.h"
-#include "libatomic.h"
 #include "mymemory.h"
 #include "clockvector.h"
+#include "memoryorder.h"
+
+using std::memory_order;
+using std::memory_order_relaxed;
+using std::memory_order_acquire;
+using std::memory_order_release;
+using std::memory_order_acq_rel;
+using std::memory_order_seq_cst;
 
 /** Note that this value can be legitimately used by a program, and
                hence by iteself does not indicate no value. */
@@ -27,7 +34,9 @@ typedef enum action_type {
        THREAD_JOIN,          /**< A thread join action */
        ATOMIC_READ,          /**< An atomic read action */
        ATOMIC_WRITE,         /**< An atomic write action */
-       ATOMIC_RMW,           /**< An atomic read-modify-write action */
+       ATOMIC_RMWR,          /**< The read part of an atomic RMW action */
+       ATOMIC_RMW,           /**< The write part of an atomic RMW action */
+       ATOMIC_RMWC,          /**< Convert an atomic RMW action into a READ */
        ATOMIC_INIT           /**< Initialization of an atomic object (e.g.,
                               *   atomic_init()) */
 } action_type_t;
@@ -58,6 +67,8 @@ public:
 
        bool is_read() const;
        bool is_write() const;
+       bool is_rmwr() const;
+       bool is_rmwc() const;
        bool is_rmw() const;
        bool is_initialization() const;
        bool is_acquire() const;
@@ -80,8 +91,12 @@ public:
                return get_seq_number() > act.get_seq_number();
        }
 
+       void process_rmw(ModelAction * act);
+       void copy_typeandorder(ModelAction * act);
+
        MEMALLOC
 private:
+       void synchronize_with(const ModelAction *act);
 
        /** Type of action (read, write, thread create, thread yield, thread join) */
        action_type type;
@@ -95,8 +110,7 @@ private:
        /** The thread id that performed this action. */
        thread_id_t tid;
 
-       /** The value read or written (if RMW, then the value written). This
-        * should probably be something longer. */
+       /** The value written (for write or RMW; undefined for read) */
        uint64_t value;
 
        /** The action that this action reads from. Only valid for reads */