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Ian Rogers306057f2012-11-26 12:45:53 -08001/*
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
Brian Carlstromfc0e3212013-07-17 14:40:12 -070017#ifndef ART_RUNTIME_JVALUE_H_
18#define ART_RUNTIME_JVALUE_H_
Ian Rogers306057f2012-11-26 12:45:53 -080019
20#include "base/macros.h"
Mathieu Chartier28bd2e42016-10-04 13:54:57 -070021#include "base/mutex.h"
Ian Rogers306057f2012-11-26 12:45:53 -080022
Ian Rogers62d6c772013-02-27 08:32:07 -080023#include <stdint.h>
24
Mathieu Chartier28bd2e42016-10-04 13:54:57 -070025#include "obj_ptr.h"
26
Ian Rogers306057f2012-11-26 12:45:53 -080027namespace art {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080028namespace mirror {
Ian Rogers306057f2012-11-26 12:45:53 -080029class Object;
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080030} // namespace mirror
Ian Rogers306057f2012-11-26 12:45:53 -080031
Mathieu Chartierb12be8c2016-12-01 14:54:38 -080032union PACKED(alignof(mirror::Object*)) JValue {
Ian Rogers306057f2012-11-26 12:45:53 -080033 // We default initialize JValue instances to all-zeros.
34 JValue() : j(0) {}
35
Alex Lighte00ec302017-06-16 08:56:43 -070036 template<typename T> static JValue FromPrimitive(T v);
37
Ian Rogers306057f2012-11-26 12:45:53 -080038 int8_t GetB() const { return b; }
39 void SetB(int8_t new_b) {
Douglas Leung44f10192015-09-23 16:42:08 -070040 j = ((static_cast<int64_t>(new_b) << 56) >> 56); // Sign-extend to 64 bits.
Ian Rogers306057f2012-11-26 12:45:53 -080041 }
42
43 uint16_t GetC() const { return c; }
buzbeee667a3c2017-03-09 13:51:23 -080044 void SetC(uint16_t new_c) {
45 j = static_cast<int64_t>(new_c); // Zero-extend to 64 bits.
46 }
Ian Rogers306057f2012-11-26 12:45:53 -080047
48 double GetD() const { return d; }
49 void SetD(double new_d) { d = new_d; }
50
51 float GetF() const { return f; }
52 void SetF(float new_f) { f = new_f; }
53
54 int32_t GetI() const { return i; }
Douglas Leung44f10192015-09-23 16:42:08 -070055 void SetI(int32_t new_i) {
56 j = ((static_cast<int64_t>(new_i) << 32) >> 32); // Sign-extend to 64 bits.
57 }
Ian Rogers306057f2012-11-26 12:45:53 -080058
59 int64_t GetJ() const { return j; }
60 void SetJ(int64_t new_j) { j = new_j; }
61
Mathieu Chartier28bd2e42016-10-04 13:54:57 -070062 mirror::Object* GetL() const REQUIRES_SHARED(Locks::mutator_lock_) {
63 return l;
64 }
65 void SetL(ObjPtr<mirror::Object> new_l) REQUIRES_SHARED(Locks::mutator_lock_);
Ian Rogers306057f2012-11-26 12:45:53 -080066
67 int16_t GetS() const { return s; }
68 void SetS(int16_t new_s) {
Douglas Leung44f10192015-09-23 16:42:08 -070069 j = ((static_cast<int64_t>(new_s) << 48) >> 48); // Sign-extend to 64 bits.
Ian Rogers306057f2012-11-26 12:45:53 -080070 }
71
72 uint8_t GetZ() const { return z; }
buzbeee667a3c2017-03-09 13:51:23 -080073 void SetZ(uint8_t new_z) {
74 j = static_cast<int64_t>(new_z); // Zero-extend to 64 bits.
75 }
Ian Rogers306057f2012-11-26 12:45:53 -080076
Mingyao Yang1f2d3ba2015-05-18 12:12:50 -070077 mirror::Object** GetGCRoot() { return &l; }
78
Ian Rogers306057f2012-11-26 12:45:53 -080079 private:
80 uint8_t z;
81 int8_t b;
82 uint16_t c;
83 int16_t s;
84 int32_t i;
85 int64_t j;
86 float f;
87 double d;
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080088 mirror::Object* l;
Ian Rogers306057f2012-11-26 12:45:53 -080089};
90
91} // namespace art
92
Brian Carlstromfc0e3212013-07-17 14:40:12 -070093#endif // ART_RUNTIME_JVALUE_H_