1/* |
2 * Copyright (c) 2014-2017 Advanced Micro Devices, Inc. |
3 * All rights reserved. 4 * 5 * For use for simulation and test purposes only 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright notice, 11 * this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright notice, 14 * this list of conditions and the following disclaimer in the documentation 15 * and/or other materials provided with the distribution. 16 * |
17 * 3. Neither the name of the copyright holder nor the names of its 18 * contributors may be used to endorse or promote products derived from this 19 * software without specific prior written permission. |
20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 * |
33 * Authors: Sooraj Puthoor, 34 * Anthony Gutierrez |
35 */ 36 |
37#ifndef __GPU_COMPUTE_RR_SCHEDULING_POLICY_HH__ 38#define __GPU_COMPUTE_RR_SCHEDULING_POLICY_HH__ |
39 |
40#include <vector> 41 |
42#include "gpu-compute/scheduling_policy.hh" 43#include "gpu-compute/wavefront.hh" |
44 |
45// round-robin pick among the list of ready waves 46class RRSchedulingPolicy final : public __SchedulingPolicy<RRSchedulingPolicy> |
47{ 48 public: |
49 RRSchedulingPolicy() 50 { 51 } |
52 |
53 static Wavefront* 54 __chooseWave(std::vector<Wavefront*> *sched_list) 55 { 56 panic_if(!sched_list->size(), "RR scheduling policy sched list is " 57 "empty.\n"); 58 Wavefront *selected_wave(nullptr); |
59 |
60 /** 61 * For RR policy, select the wave that is at the front of 62 * the list. The selected wave is popped out from the schedule 63 * list immediately after selection to avoid starvation. It 64 * is the responsibility of the module invoking the RR scheduler 65 * to make sure it is scheduling eligible waves are added to the 66 * back of the schedule list. 67 */ 68 selected_wave = sched_list->front(); 69 panic_if(!selected_wave, "No wave found by RR scheduling policy.\n"); 70 sched_list->erase(sched_list->begin()); 71 72 return selected_wave; 73 } |
74}; 75 |
76#endif // __GPU_COMPUTE_RR_SCHEDULING_POLICY_HH__ |