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 "callee_save_frame.h"
18 #include "jit/jit.h"
19 #include "runtime.h"
20 #include "thread-inl.h"
21
22 namespace art {
23
artDeoptimizeIfNeeded(Thread * self,uintptr_t result,bool is_ref)24 extern "C" void artDeoptimizeIfNeeded(Thread* self, uintptr_t result, bool is_ref)
25 REQUIRES_SHARED(Locks::mutator_lock_) {
26 instrumentation::Instrumentation* instr = Runtime::Current()->GetInstrumentation();
27 DCHECK(!self->IsExceptionPending());
28
29 ArtMethod** sp = self->GetManagedStack()->GetTopQuickFrame();
30 DCHECK(sp != nullptr && (*sp)->IsRuntimeMethod());
31
32 DeoptimizationMethodType type = instr->GetDeoptimizationMethodType(*sp);
33 JValue jvalue;
34 jvalue.SetJ(result);
35 instr->DeoptimizeIfNeeded(self, sp, type, jvalue, is_ref);
36 }
37
artTestSuspendFromCode(Thread * self)38 extern "C" void artTestSuspendFromCode(Thread* self) REQUIRES_SHARED(Locks::mutator_lock_) {
39 // Called when there is a pending checkpoint or suspend request.
40 ScopedQuickEntrypointChecks sqec(self);
41 self->CheckSuspend();
42
43 // We could have other dex instructions at the same dex pc as suspend and we need to execute
44 // those instructions. So we should start executing from the current dex pc.
45 ArtMethod** sp = self->GetManagedStack()->GetTopQuickFrame();
46 JValue result;
47 result.SetJ(0);
48 Runtime::Current()->GetInstrumentation()->DeoptimizeIfNeeded(
49 self, sp, DeoptimizationMethodType::kKeepDexPc, result, /* is_ref= */ false);
50 }
51
artImplicitSuspendFromCode(Thread * self)52 extern "C" void artImplicitSuspendFromCode(Thread* self) REQUIRES_SHARED(Locks::mutator_lock_) {
53 // Called when there is a pending checkpoint or suspend request.
54 ScopedQuickEntrypointChecks sqec(self);
55 self->CheckSuspend(/*implicit=*/ true);
56
57 // We could have other dex instructions at the same dex pc as suspend and we need to execute
58 // those instructions. So we should start executing from the current dex pc.
59 ArtMethod** sp = self->GetManagedStack()->GetTopQuickFrame();
60 JValue result;
61 result.SetJ(0);
62 Runtime::Current()->GetInstrumentation()->DeoptimizeIfNeeded(
63 self, sp, DeoptimizationMethodType::kKeepDexPc, result, /* is_ref= */ false);
64 }
65
artCompileOptimized(ArtMethod * method,Thread * self)66 extern "C" void artCompileOptimized(ArtMethod* method, Thread* self)
67 REQUIRES_SHARED(Locks::mutator_lock_) {
68 ScopedQuickEntrypointChecks sqec(self);
69 // It is important this method is not suspended due to:
70 // * It is called on entry, and object parameters are in locations that are
71 // not marked in the stack map.
72 // * Async deoptimization does not expect runtime methods other than the
73 // suspend entrypoint before executing the first instruction of a Java
74 // method.
75 ScopedAssertNoThreadSuspension sants("Enqueuing optimized compilation");
76 Runtime::Current()->GetJit()->EnqueueOptimizedCompilation(method, self);
77 }
78
79 } // namespace art
80