-/* Copyright (c) 2019-2021. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2019-2022. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
namespace kernel {
namespace actor {
-std::string SimcallObserver::to_string(int /*time_considered*/) const
+bool SimcallObserver::depends(SimcallObserver* other)
+{
+ THROW_UNIMPLEMENTED;
+}
+/* Random is only dependent when issued by the same actor (ie, always independent) */
+bool RandomSimcall::depends(SimcallObserver* other)
+{
+ return get_issuer() == other->get_issuer();
+}
+bool MutexSimcall::depends(SimcallObserver* other)
+{
+ if (dynamic_cast<RandomSimcall*>(other) != nullptr)
+ return other->depends(this); /* Other is random, that is very permissive. Use that relation instead. */
+
+#if 0 /* This code is currently broken and shouldn't be used. We must implement asynchronous locks before */
+ MutexSimcall* that = dynamic_cast<MutexSimcall*>(other);
+ if (that == nullptr)
+ return true; // Depends on anything we don't know
+
+ /* Theorem 4.4.7: Any pair of synchronization actions of distinct actors concerning distinct mutexes are independent */
+ if (this->get_issuer() != that->get_issuer() && this->get_mutex() != that->get_mutex())
+ return false;
+
+ /* Theorem 4.4.8 An AsyncMutexLock is independent with a MutexUnlock of another actor */
+ if (((dynamic_cast<MutexLockSimcall*>(this) != nullptr && dynamic_cast<MutexUnlockSimcall*>(that)) ||
+ (dynamic_cast<MutexLockSimcall*>(that) != nullptr && dynamic_cast<MutexUnlockSimcall*>(this))) &&
+ get_issuer() != other->get_issuer())
+ return false;
+#endif
+ return true; // Depend on things we don't know for sure that they are independent
+}
+
+std::string SimcallObserver::to_string(int /*times_considered*/) const
{
return simgrid::xbt::string_printf("[(%ld)%s (%s)] ", issuer_->get_pid(), issuer_->get_host()->get_cname(),
issuer_->get_cname());
return xbt::string_printf("[(%ld)] ", issuer_->get_pid());
}
-std::string RandomSimcall::to_string(int time_considered) const
+std::string RandomSimcall::to_string(int times_considered) const
{
- return SimcallObserver::to_string(time_considered) + "MC_RANDOM(" + std::to_string(time_considered) + ")";
+ return SimcallObserver::to_string(times_considered) + "MC_RANDOM(" + std::to_string(times_considered) + ")";
}
std::string RandomSimcall::dot_label() const
return max_ - min_ + 1;
}
-std::string MutexUnlockSimcall::to_string(int time_considered) const
+std::string MutexUnlockSimcall::to_string(int times_considered) const
{
- return SimcallObserver::to_string(time_considered) + "Mutex UNLOCK";
+ return SimcallObserver::to_string(times_considered) + "Mutex UNLOCK";
}
std::string MutexUnlockSimcall::dot_label() const
return SimcallObserver::dot_label() + "Mutex UNLOCK";
}
-std::string MutexLockSimcall::to_string(int time_considered) const
+std::string MutexLockSimcall::to_string(int times_considered) const
{
- std::string res = SimcallObserver::to_string(time_considered) + (blocking_ ? "Mutex LOCK" : "Mutex TRYLOCK");
- res += "(locked = " + std::to_string(mutex_->is_locked());
- res += ", owner = " + std::to_string(mutex_->get_owner() ? mutex_->get_owner()->get_pid() : -1);
+ auto mutex = get_mutex();
+ std::string res = SimcallObserver::to_string(times_considered) + (blocking_ ? "Mutex LOCK" : "Mutex TRYLOCK");
+ res += "(locked = " + std::to_string(mutex->is_locked());
+ res += ", owner = " + std::to_string(mutex->get_owner() ? mutex->get_owner()->get_pid() : -1);
res += ", sleeping = n/a)";
return res;
}
bool MutexLockSimcall::is_enabled() const
{
- return not blocking_ || mutex_->get_owner() == nullptr || mutex_->get_owner() == get_issuer();
+ return not blocking_ || get_mutex()->get_owner() == nullptr || get_mutex()->get_owner() == get_issuer();
}
-std::string ConditionWaitSimcall::to_string(int time_considered) const
+std::string ConditionWaitSimcall::to_string(int times_considered) const
{
- std::string res = SimcallObserver::to_string(time_considered) + "Condition WAIT";
+ std::string res = SimcallObserver::to_string(times_considered) + "Condition WAIT";
res += "(" + (timeout_ == -1.0 ? "" : std::to_string(timeout_)) + ")";
return res;
}
return true;
}
-std::string SemAcquireSimcall::to_string(int time_considered) const
+std::string SemAcquireSimcall::to_string(int times_considered) const
{
- std::string res = SimcallObserver::to_string(time_considered) + "Sem ACQUIRE";
+ std::string res = SimcallObserver::to_string(times_considered) + "Sem ACQUIRE";
res += "(" + (timeout_ == -1.0 ? "" : std::to_string(timeout_)) + ")";
return res;
}
return true;
}
-std::string ExecutionWaitanySimcall::to_string(int time_considered) const
+std::string ExecutionWaitanySimcall::to_string(int times_considered) const
{
- std::string res = SimcallObserver::to_string(time_considered) + "Execution WAITANY";
+ std::string res = SimcallObserver::to_string(times_considered) + "Execution WAITANY";
res += "(" + (timeout_ == -1.0 ? "" : std::to_string(timeout_)) + ")";
return res;
}
{
return SimcallObserver::dot_label() + "Execution WAITANY";
}
+
+std::string IoWaitanySimcall::to_string(int times_considered) const
+{
+ std::string res = SimcallObserver::to_string(times_considered) + "I/O WAITANY";
+ res += "(" + (timeout_ == -1.0 ? "" : std::to_string(timeout_)) + ")";
+ return res;
+}
+
+std::string IoWaitanySimcall::dot_label() const
+{
+ return SimcallObserver::dot_label() + "I/O WAITANY";
+}
+
} // namespace actor
} // namespace kernel
} // namespace simgrid
