1 /* Copyright (c) 2006-2021. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "simgrid/forward.h"
7 #include "simgrid/mutex.h"
8 #include "simgrid/s4u/Mutex.hpp"
9 #include "src/kernel/activity/MutexImpl.hpp"
16 if (pimpl_ != nullptr)
20 /** @brief Blocks the calling actor until the mutex can be obtained */
23 simcall_mutex_lock(pimpl_);
26 /** @brief Release the ownership of the mutex, unleashing a blocked actor (if any)
28 * Will fail if the calling actor does not own the mutex.
32 simcall_mutex_unlock(pimpl_);
35 /** @brief Acquire the mutex if it's free, and return false (without blocking) if not */
36 bool Mutex::try_lock()
38 return simcall_mutex_trylock(pimpl_);
41 /** @brief Create a new mutex
45 MutexPtr Mutex::create()
47 kernel::activity::MutexImpl* mutex = kernel::actor::simcall([] { return new kernel::activity::MutexImpl(); });
48 return MutexPtr(&mutex->mutex(), false);
51 /* refcounting of the intrusive_ptr is delegated to the implementation object */
52 void intrusive_ptr_add_ref(const Mutex* mutex)
58 void intrusive_ptr_release(const Mutex* mutex)
62 mutex->pimpl_->unref();
66 } // namespace simgrid
68 /* **************************** Public C interface *************************** */
69 sg_mutex_t sg_mutex_init()
71 simgrid::kernel::activity::MutexImpl* mutex =
72 simgrid::kernel::actor::simcall([] { return new simgrid::kernel::activity::MutexImpl(); });
74 return new simgrid::s4u::Mutex(mutex);
77 void sg_mutex_lock(sg_mutex_t mutex)
82 void sg_mutex_unlock(sg_mutex_t mutex)
87 int sg_mutex_try_lock(sg_mutex_t mutex)
89 return mutex->try_lock();
92 void sg_mutex_destroy(const_sg_mutex_t mutex)