Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "PhaseOffsets.h" |
| 18 | |
| 19 | #include <cutils/properties.h> |
| 20 | |
Dominik Laskowski | eddeda1 | 2019-07-19 11:54:13 -0700 | [diff] [blame] | 21 | #include <optional> |
| 22 | |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 23 | #include "SurfaceFlingerProperties.h" |
| 24 | |
Dominik Laskowski | eddeda1 | 2019-07-19 11:54:13 -0700 | [diff] [blame] | 25 | namespace { |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 26 | |
Dominik Laskowski | f83570c | 2019-08-26 12:04:07 -0700 | [diff] [blame] | 27 | std::optional<nsecs_t> getProperty(const char* name) { |
Dominik Laskowski | eddeda1 | 2019-07-19 11:54:13 -0700 | [diff] [blame] | 28 | char value[PROPERTY_VALUE_MAX]; |
| 29 | property_get(name, value, "-1"); |
| 30 | if (const int i = atoi(value); i != -1) return i; |
| 31 | return std::nullopt; |
| 32 | } |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 33 | |
Dominik Laskowski | eddeda1 | 2019-07-19 11:54:13 -0700 | [diff] [blame] | 34 | } // namespace |
| 35 | |
| 36 | namespace android::scheduler { |
| 37 | |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 38 | PhaseOffsets::~PhaseOffsets() = default; |
| 39 | |
| 40 | namespace impl { |
Dominik Laskowski | eddeda1 | 2019-07-19 11:54:13 -0700 | [diff] [blame] | 41 | |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 42 | PhaseOffsets::PhaseOffsets() { |
Ady Abraham | be0f948 | 2019-04-24 15:41:53 -0700 | [diff] [blame] | 43 | // Below defines the threshold when an offset is considered to be negative, i.e. targeting |
| 44 | // for the N+2 vsync instead of N+1. This means that: |
| 45 | // For offset < threshold, SF wake up (vsync_duration - offset) before HW vsync. |
| 46 | // For offset >= threshold, SF wake up (2 * vsync_duration - offset) before HW vsync. |
Dominik Laskowski | eddeda1 | 2019-07-19 11:54:13 -0700 | [diff] [blame] | 47 | const nsecs_t thresholdForNextVsync = |
| 48 | getProperty("debug.sf.phase_offset_threshold_for_next_vsync_ns") |
| 49 | .value_or(std::numeric_limits<nsecs_t>::max()); |
Ady Abraham | be0f948 | 2019-04-24 15:41:53 -0700 | [diff] [blame] | 50 | |
Dominik Laskowski | eddeda1 | 2019-07-19 11:54:13 -0700 | [diff] [blame] | 51 | const Offsets defaultOffsets = getDefaultOffsets(thresholdForNextVsync); |
| 52 | const Offsets highFpsOffsets = getHighFpsOffsets(thresholdForNextVsync); |
Alec Mouri | d7599d8 | 2019-05-22 19:58:00 -0700 | [diff] [blame] | 53 | |
Alec Mouri | d7599d8 | 2019-05-22 19:58:00 -0700 | [diff] [blame] | 54 | mOffsets.insert({RefreshRateType::DEFAULT, defaultOffsets}); |
| 55 | mOffsets.insert({RefreshRateType::PERFORMANCE, highFpsOffsets}); |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 56 | } |
| 57 | |
Ady Abraham | 796beb0 | 2019-04-11 15:23:07 -0700 | [diff] [blame] | 58 | PhaseOffsets::Offsets PhaseOffsets::getOffsetsForRefreshRate( |
Dominik Laskowski | eddeda1 | 2019-07-19 11:54:13 -0700 | [diff] [blame] | 59 | RefreshRateType refreshRateType) const { |
Alec Mouri | d7599d8 | 2019-05-22 19:58:00 -0700 | [diff] [blame] | 60 | return mOffsets.at(refreshRateType); |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 61 | } |
| 62 | |
| 63 | void PhaseOffsets::dump(std::string& result) const { |
Dominik Laskowski | eddeda1 | 2019-07-19 11:54:13 -0700 | [diff] [blame] | 64 | const auto [early, earlyGl, late, threshold] = getCurrentOffsets(); |
Dominik Laskowski | 9804183 | 2019-08-01 18:35:59 -0700 | [diff] [blame] | 65 | using base::StringAppendF; |
| 66 | StringAppendF(&result, |
| 67 | " app phase: %9" PRId64 " ns\t SF phase: %9" PRId64 " ns\n" |
| 68 | " early app phase: %9" PRId64 " ns\t early SF phase: %9" PRId64 " ns\n" |
| 69 | " GL early app phase: %9" PRId64 " ns\tGL early SF phase: %9" PRId64 " ns\n" |
| 70 | "next VSYNC threshold: %9" PRId64 " ns\n", |
| 71 | late.app, late.sf, early.app, early.sf, earlyGl.app, earlyGl.sf, threshold); |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 72 | } |
| 73 | |
Dominik Laskowski | eddeda1 | 2019-07-19 11:54:13 -0700 | [diff] [blame] | 74 | PhaseOffsets::Offsets PhaseOffsets::getDefaultOffsets(nsecs_t thresholdForNextVsync) { |
| 75 | const int64_t vsyncPhaseOffsetNs = sysprop::vsync_event_phase_offset_ns(1000000); |
| 76 | const int64_t sfVsyncPhaseOffsetNs = sysprop::vsync_sf_event_phase_offset_ns(1000000); |
| 77 | |
| 78 | const auto earlySfOffsetNs = getProperty("debug.sf.early_phase_offset_ns"); |
| 79 | const auto earlyGlSfOffsetNs = getProperty("debug.sf.early_gl_phase_offset_ns"); |
| 80 | const auto earlyAppOffsetNs = getProperty("debug.sf.early_app_phase_offset_ns"); |
| 81 | const auto earlyGlAppOffsetNs = getProperty("debug.sf.early_gl_app_phase_offset_ns"); |
| 82 | |
| 83 | return {{RefreshRateType::DEFAULT, earlySfOffsetNs.value_or(sfVsyncPhaseOffsetNs), |
| 84 | earlyAppOffsetNs.value_or(vsyncPhaseOffsetNs)}, |
| 85 | |
| 86 | {RefreshRateType::DEFAULT, earlyGlSfOffsetNs.value_or(sfVsyncPhaseOffsetNs), |
| 87 | earlyGlAppOffsetNs.value_or(vsyncPhaseOffsetNs)}, |
| 88 | |
| 89 | {RefreshRateType::DEFAULT, sfVsyncPhaseOffsetNs, vsyncPhaseOffsetNs}, |
| 90 | |
| 91 | thresholdForNextVsync}; |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 92 | } |
| 93 | |
Dominik Laskowski | eddeda1 | 2019-07-19 11:54:13 -0700 | [diff] [blame] | 94 | PhaseOffsets::Offsets PhaseOffsets::getHighFpsOffsets(nsecs_t thresholdForNextVsync) { |
| 95 | // TODO(b/122905996): Define these in device.mk. |
| 96 | const int highFpsLateAppOffsetNs = |
| 97 | getProperty("debug.sf.high_fps_late_app_phase_offset_ns").value_or(2000000); |
| 98 | const int highFpsLateSfOffsetNs = |
| 99 | getProperty("debug.sf.high_fps_late_sf_phase_offset_ns").value_or(1000000); |
| 100 | |
| 101 | const auto highFpsEarlySfOffsetNs = getProperty("debug.sf.high_fps_early_phase_offset_ns"); |
| 102 | const auto highFpsEarlyGlSfOffsetNs = getProperty("debug.sf.high_fps_early_gl_phase_offset_ns"); |
| 103 | const auto highFpsEarlyAppOffsetNs = getProperty("debug.sf.high_fps_early_app_phase_offset_ns"); |
| 104 | const auto highFpsEarlyGlAppOffsetNs = |
| 105 | getProperty("debug.sf.high_fps_early_gl_app_phase_offset_ns"); |
| 106 | |
| 107 | return {{RefreshRateType::PERFORMANCE, highFpsEarlySfOffsetNs.value_or(highFpsLateSfOffsetNs), |
| 108 | highFpsEarlyAppOffsetNs.value_or(highFpsLateAppOffsetNs)}, |
| 109 | |
| 110 | {RefreshRateType::PERFORMANCE, highFpsEarlyGlSfOffsetNs.value_or(highFpsLateSfOffsetNs), |
| 111 | highFpsEarlyGlAppOffsetNs.value_or(highFpsLateAppOffsetNs)}, |
| 112 | |
| 113 | {RefreshRateType::PERFORMANCE, highFpsLateSfOffsetNs, highFpsLateAppOffsetNs}, |
| 114 | |
| 115 | thresholdForNextVsync}; |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 116 | } |
| 117 | |
| 118 | } // namespace impl |
Dominik Laskowski | eddeda1 | 2019-07-19 11:54:13 -0700 | [diff] [blame] | 119 | } // namespace android::scheduler |