action: rework/rename 'synchronized()' to 'synchronize_with()'

[model-checker.git] / action.cc

diff --git a/action.cc b/action.cc
index 33c69656d7702d757cd90d44a5884fdef99e2864..131cb74d7e821ba8c473499f0eed3e7eaf504191 100644 (file)
--- a/action.cc
+++ b/action.cc
@@ -152,7 +152,8 @@ bool ModelAction::is_synchronizing(const ModelAction *act) const
 
 void ModelAction::create_cv(const ModelAction *parent)
 {
-       ASSERT(cv == NULL);
+       if (cv)
+               delete cv;
 
        if (parent)
                cv = new ClockVector(parent->cv, this);
@@ -160,16 +161,27 @@ void ModelAction::create_cv(const ModelAction *parent)
                cv = new ClockVector(NULL, this);
 }
 
-
 /** Update the model action's read_from action */
 void ModelAction::read_from(const ModelAction *act)
 {
        ASSERT(cv);
-       if (act->is_release() && this->is_acquire())
+       if (act!=NULL && act->is_release() && this->is_acquire()) {
+               synchronize_with(act);
                cv->merge(act->cv);
+       }
        reads_from = act;
 }
 
+/**
+ * Synchronize the current thread with the thread corresponding to the
+ * ModelAction parameter.
+ * @param act The ModelAction to synchronize with
+ */
+void ModelAction::synchronize_with(const ModelAction *act) {
+       model->check_promises(cv, act->cv);
+       cv->merge(act->cv);
+}
+
 /**
  * Check whether 'this' happens before act, according to the memory-model's
  * happens before relation. This is checked via the ClockVector constructs.
@@ -183,7 +195,7 @@ bool ModelAction::happens_before(const ModelAction *act) const
 
 void ModelAction::print(void) const
 {
-       const char *type_str;
+       const char *type_str, *mo_str;
        switch (this->type) {
        case THREAD_CREATE:
                type_str = "thread create";
@@ -221,8 +233,29 @@ void ModelAction::print(void) const
 
        uint64_t valuetoprint=type==ATOMIC_READ?(reads_from!=NULL?reads_from->value:VALUE_NONE):value;
 
-       printf("(%3d) Thread: %-2d    Action: %-13s    MO: %d    Loc: %14p    Value: %-12" PRIu64,
-                       seq_number, id_to_int(tid), type_str, order, location, valuetoprint);
+       switch (this->order) {
+       case std::memory_order_relaxed:
+               mo_str = "relaxed";
+               break;
+       case std::memory_order_acquire:
+               mo_str = "acquire";
+               break;
+       case std::memory_order_release:
+               mo_str = "release";
+               break;
+       case std::memory_order_acq_rel:
+               mo_str = "acq_rel";
+               break;
+       case std::memory_order_seq_cst:
+               mo_str = "seq_cst";
+               break;
+       default:
+               mo_str = "unknown";
+               break;
+       }
+
+       printf("(%3d) Thread: %-2d   Action: %-13s   MO: %7s  Loc: %14p  Value: %-12" PRIu64,
+                       seq_number, id_to_int(tid), type_str, mo_str, location, valuetoprint);
        if (reads_from)
                printf(" Rf: %d", reads_from->get_seq_number());
        if (cv) {