blob: d1caf3fc8c51bdb09d3069d592f162d413eeead1 [file] [log] [blame]
/*
* Copyright (C) 2016 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 "art_method-inl.h"
#include "jit/jit.h"
#include "jit/jit_code_cache.h"
#include "jit/profiling_info.h"
#include "nativehelper/ScopedUtfChars.h"
#include "oat_quick_method_header.h"
#include "scoped_thread_state_change-inl.h"
#include "stack.h"
#include "stack_map.h"
#include "thread-current-inl.h"
namespace art {
namespace {
template <typename Handler>
void ProcessMethodWithName(JNIEnv* env, jstring method_name, const Handler& handler) {
ScopedUtfChars chars(env, method_name);
CHECK(chars.c_str() != nullptr);
ScopedObjectAccess soa(Thread::Current());
StackVisitor::WalkStack(
[&](const art::StackVisitor* stack_visitor) REQUIRES_SHARED(Locks::mutator_lock_) {
std::string m_name(stack_visitor->GetMethod()->GetName());
if (m_name.compare(chars.c_str()) == 0) {
handler(stack_visitor);
return false;
}
return true;
},
soa.Self(),
/* context= */ nullptr,
art::StackVisitor::StackWalkKind::kIncludeInlinedFrames);
}
} // namespace
extern "C" JNIEXPORT jboolean JNICALL Java_Main_isInOsrCode(JNIEnv* env,
jclass,
jstring method_name) {
jit::Jit* jit = Runtime::Current()->GetJit();
if (jit == nullptr) {
// Just return true for non-jit configurations to stop the infinite loop.
return JNI_TRUE;
}
bool in_osr_code = false;
ProcessMethodWithName(
env,
method_name,
[&](const art::StackVisitor* stack_visitor) REQUIRES_SHARED(Locks::mutator_lock_) {
ArtMethod* m = stack_visitor->GetMethod();
const OatQuickMethodHeader* header =
Runtime::Current()->GetJit()->GetCodeCache()->LookupOsrMethodHeader(m);
if (header != nullptr && header == stack_visitor->GetCurrentOatQuickMethodHeader()) {
in_osr_code = true;
}
});
return in_osr_code;
}
extern "C" JNIEXPORT jboolean JNICALL Java_Main_isInInterpreter(JNIEnv* env,
jclass,
jstring method_name) {
if (!Runtime::Current()->UseJitCompilation()) {
// The return value is irrelevant if we're not using JIT.
return false;
}
bool in_interpreter = false;
ProcessMethodWithName(
env,
method_name,
[&](const art::StackVisitor* stack_visitor) REQUIRES_SHARED(Locks::mutator_lock_) {
ArtMethod* m = stack_visitor->GetMethod();
const OatQuickMethodHeader* header =
Runtime::Current()->GetJit()->GetCodeCache()->LookupOsrMethodHeader(m);
if ((header == nullptr || header != stack_visitor->GetCurrentOatQuickMethodHeader()) &&
(stack_visitor->IsShadowFrame() ||
stack_visitor->GetCurrentOatQuickMethodHeader()->IsNterpMethodHeader())) {
in_interpreter = true;
}
});
return in_interpreter;
}
extern "C" JNIEXPORT void JNICALL Java_Main_ensureHasProfilingInfo(JNIEnv* env,
jclass,
jstring method_name) {
if (!Runtime::Current()->UseJitCompilation()) {
return;
}
ProcessMethodWithName(
env,
method_name,
[&](const art::StackVisitor* stack_visitor) REQUIRES_SHARED(Locks::mutator_lock_) {
ArtMethod* m = stack_visitor->GetMethod();
ProfilingInfo::Create(Thread::Current(), m);
});
}
extern "C" JNIEXPORT void JNICALL Java_Main_ensureHasOsrCode(JNIEnv* env,
jclass,
jstring method_name) {
if (!Runtime::Current()->UseJitCompilation()) {
return;
}
ProcessMethodWithName(
env,
method_name,
[&](const art::StackVisitor* stack_visitor) REQUIRES_SHARED(Locks::mutator_lock_) {
ArtMethod* m = stack_visitor->GetMethod();
jit::Jit* jit = Runtime::Current()->GetJit();
while (jit->GetCodeCache()->LookupOsrMethodHeader(m) == nullptr) {
// Sleep to yield to the compiler thread.
usleep(1000);
// Will either ensure it's compiled or do the compilation itself.
jit->CompileMethod(
m, Thread::Current(), CompilationKind::kOsr, /*prejit=*/ false);
}
});
}
} // namespace art