You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
3.1 KiB
81 lines
3.1 KiB
/*
|
|
* Copyright (C) 2012 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 "base/logging.h" // For VLOG_IS_ON.
|
|
#include "base/mutex.h"
|
|
#include "callee_save_frame.h"
|
|
#include "interpreter/interpreter.h"
|
|
#include "obj_ptr-inl.h" // TODO: Find the other include that isn't complete, and clean this up.
|
|
#include "quick_exception_handler.h"
|
|
#include "runtime.h"
|
|
#include "thread.h"
|
|
|
|
namespace art {
|
|
|
|
NO_RETURN static void artDeoptimizeImpl(Thread* self, DeoptimizationKind kind, bool single_frame)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
Runtime::Current()->IncrementDeoptimizationCount(kind);
|
|
if (VLOG_IS_ON(deopt)) {
|
|
if (single_frame) {
|
|
// Deopt logging will be in DeoptimizeSingleFrame. It is there to take advantage of the
|
|
// specialized visitor that will show whether a method is Quick or Shadow.
|
|
} else {
|
|
LOG(INFO) << "Deopting:";
|
|
self->Dump(LOG_STREAM(INFO));
|
|
}
|
|
}
|
|
|
|
self->AssertHasDeoptimizationContext();
|
|
QuickExceptionHandler exception_handler(self, true);
|
|
if (single_frame) {
|
|
exception_handler.DeoptimizeSingleFrame(kind);
|
|
} else {
|
|
exception_handler.DeoptimizeStack();
|
|
}
|
|
uintptr_t return_pc = exception_handler.UpdateInstrumentationStack();
|
|
if (exception_handler.IsFullFragmentDone()) {
|
|
exception_handler.DoLongJump(true);
|
|
} else {
|
|
exception_handler.DeoptimizePartialFragmentFixup(return_pc);
|
|
// We cannot smash the caller-saves, as we need the ArtMethod in a parameter register that would
|
|
// be caller-saved. This has the downside that we cannot track incorrect register usage down the
|
|
// line.
|
|
exception_handler.DoLongJump(false);
|
|
}
|
|
}
|
|
|
|
extern "C" NO_RETURN void artDeoptimize(Thread* self) REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
ScopedQuickEntrypointChecks sqec(self);
|
|
artDeoptimizeImpl(self, DeoptimizationKind::kFullFrame, false);
|
|
}
|
|
|
|
// This is called directly from compiled code by an HDeoptimize.
|
|
extern "C" NO_RETURN void artDeoptimizeFromCompiledCode(DeoptimizationKind kind, Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
ScopedQuickEntrypointChecks sqec(self);
|
|
// Before deoptimizing to interpreter, we must push the deoptimization context.
|
|
JValue return_value;
|
|
return_value.SetJ(0); // we never deoptimize from compiled code with an invoke result.
|
|
self->PushDeoptimizationContext(return_value,
|
|
/* is_reference= */ false,
|
|
self->GetException(),
|
|
/* from_code= */ true,
|
|
DeoptimizationMethodType::kDefault);
|
|
artDeoptimizeImpl(self, kind, true);
|
|
}
|
|
|
|
} // namespace art
|