1 /*
2 * Copyright (C) 2012 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 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "arch/context.h"
18 #include "callee_save_frame.h"
19 #include "instrumentation.h"
20 #include "jit/jit.h"
21 #include "runtime.h"
22 #include "thread-inl.h"
23
24 namespace art HIDDEN {
25
artDeoptimizeIfNeeded(Thread * self,uintptr_t result,bool is_ref)26 extern "C" Context* artDeoptimizeIfNeeded(Thread* self, uintptr_t result, bool is_ref)
27 REQUIRES_SHARED(Locks::mutator_lock_) {
28 ScopedQuickEntrypointChecks sqec(self);
29 instrumentation::Instrumentation* instr = Runtime::Current()->GetInstrumentation();
30 DCHECK(!self->IsExceptionPending());
31
32 ArtMethod** sp = self->GetManagedStack()->GetTopQuickFrame();
33 DCHECK(sp != nullptr && (*sp)->IsRuntimeMethod());
34
35 DeoptimizationMethodType type = instr->GetDeoptimizationMethodType(*sp);
36 JValue jvalue;
37 jvalue.SetJ(result);
38 std::unique_ptr<Context> context = instr->DeoptimizeIfNeeded(self, sp, type, jvalue, is_ref);
39 return context.release();
40 }
41
artTestSuspendFromCode(Thread * self)42 extern "C" Context* artTestSuspendFromCode(Thread* self) REQUIRES_SHARED(Locks::mutator_lock_) {
43 // Called when there is a pending checkpoint or suspend request.
44 ScopedQuickEntrypointChecks sqec(self);
45 self->CheckSuspend();
46
47 // We could have other dex instructions at the same dex pc as suspend and we need to execute
48 // those instructions. So we should start executing from the current dex pc.
49 ArtMethod** sp = self->GetManagedStack()->GetTopQuickFrame();
50 JValue result;
51 result.SetJ(0);
52 std::unique_ptr<Context> context = Runtime::Current()->GetInstrumentation()->DeoptimizeIfNeeded(
53 self, sp, DeoptimizationMethodType::kKeepDexPc, result, /* is_ref= */ false);
54 return context.release();
55 }
56
artImplicitSuspendFromCode(Thread * self)57 extern "C" Context* artImplicitSuspendFromCode(Thread* self) REQUIRES_SHARED(Locks::mutator_lock_) {
58 // Called when there is a pending checkpoint or suspend request.
59 ScopedQuickEntrypointChecks sqec(self);
60 self->CheckSuspend(/*implicit=*/ true);
61
62 // We could have other dex instructions at the same dex pc as suspend and we need to execute
63 // those instructions. So we should start executing from the current dex pc.
64 ArtMethod** sp = self->GetManagedStack()->GetTopQuickFrame();
65 JValue result;
66 result.SetJ(0);
67 std::unique_ptr<Context> context = Runtime::Current()->GetInstrumentation()->DeoptimizeIfNeeded(
68 self, sp, DeoptimizationMethodType::kKeepDexPc, result, /* is_ref= */ false);
69 return context.release();
70 }
71
artCompileOptimized(ArtMethod * method,Thread * self)72 extern "C" void artCompileOptimized(ArtMethod* method, Thread* self)
73 REQUIRES_SHARED(Locks::mutator_lock_) {
74 ScopedQuickEntrypointChecks sqec(self);
75 // It is important this method is not suspended due to:
76 // * It is called on entry, and object parameters are in locations that are
77 // not marked in the stack map.
78 // * Async deoptimization does not expect runtime methods other than the
79 // suspend entrypoint before executing the first instruction of a Java
80 // method.
81 ScopedAssertNoThreadSuspension sants("Enqueuing optimized compilation");
82 Runtime::Current()->GetJit()->EnqueueOptimizedCompilation(method, self);
83 }
84
85 } // namespace art
86