1 /* 2 * Copyright (C) 2016 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 * * See the License for the specific language governing permissions and 10 * limitations under the License. 11 */ 12 13 #ifndef ART_RUNTIME_JIT_PROFILE_SAVER_OPTIONS_H_ 14 #define ART_RUNTIME_JIT_PROFILE_SAVER_OPTIONS_H_ 15 16 #include <string> 17 #include <ostream> 18 19 namespace art { 20 21 struct ProfileSaverOptions { 22 public: 23 static constexpr uint32_t kMinSavePeriodMs = 40 * 1000; // 40 seconds 24 static constexpr uint32_t kSaveResolvedClassesDelayMs = 5 * 1000; // 5 seconds 25 // Minimum number of JIT samples during launch to mark a method as hot in the profile. 26 static constexpr uint32_t kHotStartupMethodSamples = 1; 27 static constexpr uint32_t kHotStartupMethodSamplesLowRam = 256; 28 static constexpr uint32_t kMinMethodsToSave = 10; 29 static constexpr uint32_t kMinClassesToSave = 10; 30 static constexpr uint32_t kMinNotificationBeforeWake = 10; 31 static constexpr uint32_t kMaxNotificationBeforeWake = 50; 32 static constexpr uint32_t kHotStartupMethodSamplesNotSet = std::numeric_limits<uint32_t>::max(); 33 34 ProfileSaverOptions() : 35 enabled_(false), 36 min_save_period_ms_(kMinSavePeriodMs), 37 save_resolved_classes_delay_ms_(kSaveResolvedClassesDelayMs), 38 hot_startup_method_samples_(kHotStartupMethodSamplesNotSet), 39 min_methods_to_save_(kMinMethodsToSave), 40 min_classes_to_save_(kMinClassesToSave), 41 min_notification_before_wake_(kMinNotificationBeforeWake), 42 max_notification_before_wake_(kMaxNotificationBeforeWake), 43 profile_path_(""), 44 profile_boot_class_path_(false) {} 45 46 ProfileSaverOptions( 47 bool enabled, 48 uint32_t min_save_period_ms, 49 uint32_t save_resolved_classes_delay_ms, 50 uint32_t hot_startup_method_samples, 51 uint32_t min_methods_to_save, 52 uint32_t min_classes_to_save, 53 uint32_t min_notification_before_wake, 54 uint32_t max_notification_before_wake, 55 const std::string& profile_path, 56 bool profile_boot_class_path) 57 : enabled_(enabled), 58 min_save_period_ms_(min_save_period_ms), 59 save_resolved_classes_delay_ms_(save_resolved_classes_delay_ms), 60 hot_startup_method_samples_(hot_startup_method_samples), 61 min_methods_to_save_(min_methods_to_save), 62 min_classes_to_save_(min_classes_to_save), 63 min_notification_before_wake_(min_notification_before_wake), 64 max_notification_before_wake_(max_notification_before_wake), 65 profile_path_(profile_path), 66 profile_boot_class_path_(profile_boot_class_path) {} 67 68 bool IsEnabled() const { 69 return enabled_; 70 } 71 void SetEnabled(bool enabled) { 72 enabled_ = enabled; 73 } 74 75 uint32_t GetMinSavePeriodMs() const { 76 return min_save_period_ms_; 77 } 78 uint32_t GetSaveResolvedClassesDelayMs() const { 79 return save_resolved_classes_delay_ms_; 80 } 81 uint32_t GetHotStartupMethodSamples(bool is_low_ram) const { 82 uint32_t ret = hot_startup_method_samples_; 83 if (ret == kHotStartupMethodSamplesNotSet) { 84 ret = is_low_ram ? kHotStartupMethodSamplesLowRam : kHotStartupMethodSamples; 85 } 86 return ret; 87 } 88 uint32_t GetMinMethodsToSave() const { 89 return min_methods_to_save_; 90 } 91 uint32_t GetMinClassesToSave() const { 92 return min_classes_to_save_; 93 } 94 uint32_t GetMinNotificationBeforeWake() const { 95 return min_notification_before_wake_; 96 } 97 uint32_t GetMaxNotificationBeforeWake() const { 98 return max_notification_before_wake_; 99 } 100 std::string GetProfilePath() const { 101 return profile_path_; 102 } 103 bool GetProfileBootClassPath() const { 104 return profile_boot_class_path_; 105 } 106 107 friend std::ostream & operator<<(std::ostream &os, const ProfileSaverOptions& pso) { 108 os << "enabled_" << pso.enabled_ 109 << ", min_save_period_ms_" << pso.min_save_period_ms_ 110 << ", save_resolved_classes_delay_ms_" << pso.save_resolved_classes_delay_ms_ 111 << ", hot_startup_method_samples_" << pso.hot_startup_method_samples_ 112 << ", min_methods_to_save_" << pso.min_methods_to_save_ 113 << ", min_classes_to_save_" << pso.min_classes_to_save_ 114 << ", min_notification_before_wake_" << pso.min_notification_before_wake_ 115 << ", max_notification_before_wake_" << pso.max_notification_before_wake_ 116 << ", profile_boot_class_path_" << pso.profile_boot_class_path_; 117 return os; 118 } 119 120 bool enabled_; 121 uint32_t min_save_period_ms_; 122 uint32_t save_resolved_classes_delay_ms_; 123 // Do not access hot_startup_method_samples_ directly for reading since it may be set to the 124 // placeholder default. 125 uint32_t hot_startup_method_samples_; 126 uint32_t min_methods_to_save_; 127 uint32_t min_classes_to_save_; 128 uint32_t min_notification_before_wake_; 129 uint32_t max_notification_before_wake_; 130 std::string profile_path_; 131 bool profile_boot_class_path_; 132 }; 133 134 } // namespace art 135 136 #endif // ART_RUNTIME_JIT_PROFILE_SAVER_OPTIONS_H_ 137
