-/* 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. */
-#ifndef SIMGRID_KERNEL_ACTIVITY_SEMAPHOREIMPL_HPP_
-#define SIMGRID_KERNEL_ACTIVITY_SEMAPHOREIMPL_HPP_
+#ifndef SIMGRID_KERNEL_ACTIVITY_SEMAPHOREIMPL_HPP
+#define SIMGRID_KERNEL_ACTIVITY_SEMAPHOREIMPL_HPP
#include <atomic>
#include <boost/intrusive/list.hpp>
class XBT_PUBLIC SemaphoreImpl {
std::atomic_int_fast32_t refcount_{1};
unsigned int value_;
-
-public:
actor::SynchroList sleeping_; /* list of sleeping actors*/
+public:
explicit SemaphoreImpl(unsigned int value) : value_(value){};
~SemaphoreImpl() = default;
void acquire(actor::ActorImpl* issuer, double timeout);
void release();
- bool would_block() { return (value_ == 0); }
+ bool would_block() const { return (value_ == 0); }
+ void remove_sleeping_actor(actor::ActorImpl& actor) { xbt::intrusive_erase(sleeping_, actor); }
- unsigned int get_capacity() { return value_; }
+ unsigned int get_capacity() const { return value_; }
+ bool is_used() const { return not sleeping_.empty(); }
friend void intrusive_ptr_add_ref(SemaphoreImpl* sem)
{
} // namespace kernel
} // namespace simgrid
-#endif /* SIMGRID_KERNEL_ACTIVITY_SEMAPHOREIMPL_HPP_ */
+#endif /* SIMGRID_KERNEL_ACTIVITY_SEMAPHOREIMPL_HPP */