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/*
* Copyright 2024 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "jit_options.h"
#include "runtime_options.h"
namespace art HIDDEN {
namespace jit {
// Maximum permitted threshold value.
static constexpr uint32_t kJitMaxThreshold = std::numeric_limits<uint16_t>::max();
static constexpr uint32_t kJitDefaultOptimizeThreshold = 0xffff;
// Different optimization threshold constants. These default to the equivalent optimization
// thresholds divided by 2, but can be overridden at the command-line.
static constexpr uint32_t kJitStressDefaultOptimizeThreshold = kJitDefaultOptimizeThreshold / 2;
static constexpr uint32_t kJitSlowStressDefaultOptimizeThreshold =
kJitStressDefaultOptimizeThreshold / 2;
static constexpr uint32_t kJitDefaultWarmupThreshold = 0xffff;
// Different warm-up threshold constants. These default to the equivalent warmup thresholds divided
// by 2, but can be overridden at the command-line.
static constexpr uint32_t kJitStressDefaultWarmupThreshold = kJitDefaultWarmupThreshold / 2;
static constexpr uint32_t kJitSlowStressDefaultWarmupThreshold =
kJitStressDefaultWarmupThreshold / 2;
static constexpr size_t kDefaultPriorityThreadWeightRatio = 1000;
static constexpr size_t kDefaultInvokeTransitionWeightRatio = 500;
DEFINE_RUNTIME_DEBUG_FLAG(JitOptions, kSlowMode);
JitOptions* JitOptions::CreateFromRuntimeArguments(const RuntimeArgumentMap& options) {
auto* jit_options = new JitOptions;
jit_options->use_jit_compilation_ = options.GetOrDefault(RuntimeArgumentMap::UseJitCompilation);
jit_options->use_profiled_jit_compilation_ =
options.GetOrDefault(RuntimeArgumentMap::UseProfiledJitCompilation);
jit_options->code_cache_initial_capacity_ =
options.GetOrDefault(RuntimeArgumentMap::JITCodeCacheInitialCapacity);
jit_options->code_cache_max_capacity_ =
options.GetOrDefault(RuntimeArgumentMap::JITCodeCacheMaxCapacity);
jit_options->dump_info_on_shutdown_ =
options.Exists(RuntimeArgumentMap::DumpJITInfoOnShutdown);
jit_options->profile_saver_options_ =
options.GetOrDefault(RuntimeArgumentMap::ProfileSaverOpts);
jit_options->thread_pool_pthread_priority_ =
options.GetOrDefault(RuntimeArgumentMap::JITPoolThreadPthreadPriority);
jit_options->zygote_thread_pool_pthread_priority_ =
options.GetOrDefault(RuntimeArgumentMap::JITZygotePoolThreadPthreadPriority);
// Set default optimize threshold to aid with checking defaults.
jit_options->optimize_threshold_ = kIsDebugBuild
? (kSlowMode ? kJitSlowStressDefaultOptimizeThreshold : kJitStressDefaultOptimizeThreshold)
: kJitDefaultOptimizeThreshold;
// Set default warm-up threshold to aid with checking defaults.
jit_options->warmup_threshold_ = kIsDebugBuild
? (kSlowMode ? kJitSlowStressDefaultWarmupThreshold : kJitStressDefaultWarmupThreshold)
: kJitDefaultWarmupThreshold;
if (options.Exists(RuntimeArgumentMap::JITOptimizeThreshold)) {
jit_options->optimize_threshold_ = *options.Get(RuntimeArgumentMap::JITOptimizeThreshold);
}
DCHECK_LE(jit_options->optimize_threshold_, kJitMaxThreshold);
if (options.Exists(RuntimeArgumentMap::JITWarmupThreshold)) {
jit_options->warmup_threshold_ = *options.Get(RuntimeArgumentMap::JITWarmupThreshold);
}
DCHECK_LE(jit_options->warmup_threshold_, kJitMaxThreshold);
if (options.Exists(RuntimeArgumentMap::JITPriorityThreadWeight)) {
jit_options->priority_thread_weight_ =
*options.Get(RuntimeArgumentMap::JITPriorityThreadWeight);
if (jit_options->priority_thread_weight_ > jit_options->warmup_threshold_) {
LOG(FATAL) << "Priority thread weight is above the warmup threshold.";
} else if (jit_options->priority_thread_weight_ == 0) {
LOG(FATAL) << "Priority thread weight cannot be 0.";
}
} else {
jit_options->priority_thread_weight_ = std::max(
jit_options->warmup_threshold_ / kDefaultPriorityThreadWeightRatio,
static_cast<size_t>(1));
}
if (options.Exists(RuntimeArgumentMap::JITInvokeTransitionWeight)) {
jit_options->invoke_transition_weight_ =
*options.Get(RuntimeArgumentMap::JITInvokeTransitionWeight);
if (jit_options->invoke_transition_weight_ > jit_options->warmup_threshold_) {
LOG(FATAL) << "Invoke transition weight is above the warmup threshold.";
} else if (jit_options->invoke_transition_weight_ == 0) {
LOG(FATAL) << "Invoke transition weight cannot be 0.";
}
} else {
jit_options->invoke_transition_weight_ = std::max(
jit_options->warmup_threshold_ / kDefaultInvokeTransitionWeightRatio,
static_cast<size_t>(1));
}
return jit_options;
}
} // namespace jit
} // namespace art
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