-/* Copyright (c) 2019. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2019-2021. 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. */
#include "src/kernel/activity/SemaphoreImpl.hpp"
+#include "src/kernel/activity/SynchroRaw.hpp"
+#include "src/kernel/actor/SimcallObserver.hpp"
+#include <cmath> // std::isfinite
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_semaphore, simix_synchro, "Semaphore kernel-space implementation");
namespace kernel {
namespace activity {
+void SemaphoreImpl::acquire(actor::ActorImpl* issuer, double timeout)
+{
+ XBT_DEBUG("Wait semaphore %p (timeout:%f)", this, timeout);
+ xbt_assert(std::isfinite(timeout), "timeout is not finite!");
+
+ if (value_ <= 0) {
+ RawImplPtr synchro(new RawImpl([this, issuer]() {
+ this->remove_sleeping_actor(*issuer);
+ auto* observer = dynamic_cast<kernel::actor::SemAcquireSimcall*>(issuer->simcall_.observer_);
+ xbt_assert(observer != nullptr);
+ observer->set_result(true);
+ }));
+ synchro->set_host(issuer->get_host()).set_timeout(timeout).start();
+ synchro->register_simcall(&issuer->simcall_);
+ sleeping_.push_back(*issuer);
+ } else {
+ value_--;
+ issuer->simcall_answer();
+ }
+}
void SemaphoreImpl::release()
{
XBT_DEBUG("Sem release semaphore %p", this);
if (not sleeping_.empty()) {
auto& actor = sleeping_.front();
sleeping_.pop_front();
- actor.waiting_synchro = nullptr;
- SIMIX_simcall_answer(&actor.simcall);
+ actor.waiting_synchro_ = nullptr;
+ actor.simcall_answer();
} else {
value_++;
}
}
+/** Increase the refcount for this semaphore */
+SemaphoreImpl* SemaphoreImpl::ref()
+{
+ intrusive_ptr_add_ref(this);
+ return this;
+}
+
+/** Decrease the refcount for this mutex */
+void SemaphoreImpl::unref()
+{
+ intrusive_ptr_release(this);
+}
+
} // namespace activity
} // namespace kernel
} // namespace simgrid