From b77430df7035ed2baba4705ff53861df8a5b3e21 Mon Sep 17 00:00:00 2001 From: Lioncash Date: Thu, 17 Oct 2019 16:10:24 -0400 Subject: apm/controller: Make SetPerformanceConfiguration() use an array of pairs over a map While a map is an OK way to do lookups (and usually recommended in most cases), this is a map that lives for the entire duration of the program and only deallocates its contents when the program terminates. Given the total size of the map is quite small, we can simply use a std::array of pairs and utilize std::find_if to perform the same behavior without loss of performance. This eliminates a static constructor and places the data into the read-only segment. While we're at it, we can also handle malformed inputs instead of directly dereferencing the resulting iterator. --- src/core/hle/service/apm/controller.cpp | 48 +++++++++++++++++++++++---------- 1 file changed, 34 insertions(+), 14 deletions(-) (limited to 'src/core/hle/service') diff --git a/src/core/hle/service/apm/controller.cpp b/src/core/hle/service/apm/controller.cpp index d9e8d247d..25a886238 100644 --- a/src/core/hle/service/apm/controller.cpp +++ b/src/core/hle/service/apm/controller.cpp @@ -2,6 +2,10 @@ // Licensed under GPLv2 or any later version // Refer to the license.txt file included. +#include +#include +#include + #include "common/logging/log.h" #include "core/core_timing.h" #include "core/hle/service/apm/controller.h" @@ -9,8 +13,7 @@ namespace Service::APM { -constexpr PerformanceConfiguration DEFAULT_PERFORMANCE_CONFIGURATION = - PerformanceConfiguration::Config7; +constexpr auto DEFAULT_PERFORMANCE_CONFIGURATION = PerformanceConfiguration::Config7; Controller::Controller(Core::Timing::CoreTiming& core_timing) : core_timing{core_timing}, configs{ @@ -22,18 +25,35 @@ Controller::~Controller() = default; void Controller::SetPerformanceConfiguration(PerformanceMode mode, PerformanceConfiguration config) { - static const std::map PCONFIG_TO_SPEED_MAP{ - {PerformanceConfiguration::Config1, 1020}, {PerformanceConfiguration::Config2, 1020}, - {PerformanceConfiguration::Config3, 1224}, {PerformanceConfiguration::Config4, 1020}, - {PerformanceConfiguration::Config5, 1020}, {PerformanceConfiguration::Config6, 1224}, - {PerformanceConfiguration::Config7, 1020}, {PerformanceConfiguration::Config8, 1020}, - {PerformanceConfiguration::Config9, 1020}, {PerformanceConfiguration::Config10, 1020}, - {PerformanceConfiguration::Config11, 1020}, {PerformanceConfiguration::Config12, 1020}, - {PerformanceConfiguration::Config13, 1785}, {PerformanceConfiguration::Config14, 1785}, - {PerformanceConfiguration::Config15, 1020}, {PerformanceConfiguration::Config16, 1020}, - }; - - SetClockSpeed(PCONFIG_TO_SPEED_MAP.find(config)->second); + static constexpr std::array, 16> config_to_speed{{ + {PerformanceConfiguration::Config1, 1020}, + {PerformanceConfiguration::Config2, 1020}, + {PerformanceConfiguration::Config3, 1224}, + {PerformanceConfiguration::Config4, 1020}, + {PerformanceConfiguration::Config5, 1020}, + {PerformanceConfiguration::Config6, 1224}, + {PerformanceConfiguration::Config7, 1020}, + {PerformanceConfiguration::Config8, 1020}, + {PerformanceConfiguration::Config9, 1020}, + {PerformanceConfiguration::Config10, 1020}, + {PerformanceConfiguration::Config11, 1020}, + {PerformanceConfiguration::Config12, 1020}, + {PerformanceConfiguration::Config13, 1785}, + {PerformanceConfiguration::Config14, 1785}, + {PerformanceConfiguration::Config15, 1020}, + {PerformanceConfiguration::Config16, 1020}, + }}; + + const auto iter = std::find_if(config_to_speed.cbegin(), config_to_speed.cend(), + [config](const auto& entry) { return entry.first == config; }); + + if (iter == config_to_speed.cend()) { + LOG_ERROR(Service_APM, "Invalid performance configuration value provided: {}", + static_cast(config)); + return; + } + + SetClockSpeed(iter->second); configs.insert_or_assign(mode, config); } -- cgit v1.2.3