| /* |
| * Copyright 2018 Google, Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer; |
| * redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution; |
| * neither the name of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * Authors: Gabe Black |
| */ |
| |
| #ifndef __SYSTEMC_CORE_SCHED_EVENT_HH__ |
| #define __SYSTEMC_CORE_SCHED_EVENT_HH__ |
| |
| #include <functional> |
| #include <list> |
| |
| #include "base/types.hh" |
| |
| namespace sc_gem5 |
| { |
| |
| class ScEvent; |
| |
| typedef std::list<ScEvent *> ScEvents; |
| |
| class ScEvent |
| { |
| private: |
| std::function<void()> work; |
| Tick _when; |
| ScEvents *_events; |
| ScEvents::iterator _it; |
| |
| friend class Scheduler; |
| |
| void |
| schedule(ScEvents &events, Tick w) |
| { |
| when(w); |
| assert(!scheduled()); |
| _events = &events; |
| _events->push_back(this); |
| _it = _events->end(); |
| _it--; |
| } |
| |
| void |
| deschedule() |
| { |
| assert(scheduled()); |
| _events->erase(_it); |
| _events = nullptr; |
| } |
| public: |
| ScEvent(std::function<void()> work) : |
| work(work), _when(MaxTick), _events(nullptr) |
| {} |
| |
| ~ScEvent(); |
| |
| bool scheduled() { return _events != nullptr; } |
| ScEvents *scheduledOn() { return _events; } |
| |
| void when(Tick w) { _when = w; } |
| Tick when() { return _when; } |
| |
| void run() { deschedule(); work(); } |
| }; |
| |
| } // namespace sc_gem5 |
| |
| #endif // __SYSTEMC_CORE_SCHED_EVENT_HH__ |