HeapInternal.h revision 1663a6c12fdf4732d7ea0a0406af6085b3c408e4 
1/*
2 * Copyright (C) 2008 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 * Types and macros used internally by the heap.
18 */
19#ifndef DALVIK_ALLOC_HEAP_INTERNAL_H_
20#define DALVIK_ALLOC_HEAP_INTERNAL_H_
21
22#include "MarkSweep.h"
23
24struct HeapSource;
25
26struct GcHeap {
27    HeapSource *heapSource;
28
29    /* Linked lists of subclass instances of java/lang/ref/Reference
30     * that we find while recursing.  The "next" pointers are hidden
31     * in the Reference objects' pendingNext fields.  These lists are
32     * cleared and rebuilt each time the GC runs.
33     */
34    Object *softReferences;
35    Object *weakReferences;
36    Object *finalizerReferences;
37    Object *phantomReferences;
38
39    /* The list of Reference objects that need to be enqueued.
40     */
41    Object *clearedReferences;
42
43    /* The current state of the mark step.
44     * Only valid during a GC.
45     */
46    GcMarkContext markContext;
47
48    /* GC's card table */
49    u1* cardTableBase;
50    size_t cardTableLength;
51    size_t cardTableOffset;
52
53    /* Is the GC running?  Used to avoid recursive calls to GC.
54     */
55    bool gcRunning;
56
57    /*
58     * Debug control values
59     */
60    int ddmHpifWhen;
61    int ddmHpsgWhen;
62    int ddmHpsgWhat;
63    int ddmNhsgWhen;
64    int ddmNhsgWhat;
65};
66
67bool dvmLockHeap(void);
68void dvmUnlockHeap(void);
69
70/*
71 * Logging helpers
72 */
73
74#define HEAP_LOG_TAG      LOG_TAG "-heap"
75
76#if LOG_NDEBUG
77#define LOGV_HEAP(...)    ((void)0)
78#define LOGD_HEAP(...)    ((void)0)
79#else
80#define LOGV_HEAP(...)    ALOG(LOG_VERBOSE, HEAP_LOG_TAG, __VA_ARGS__)
81#define LOGD_HEAP(...)    ALOG(LOG_DEBUG, HEAP_LOG_TAG, __VA_ARGS__)
82#endif
83#define LOGI_HEAP(...) \
84    do { \
85        if (!gDvm.zygote) { ALOG(LOG_INFO, HEAP_LOG_TAG, __VA_ARGS__); } \
86    } while (0)
87
88#define LOGW_HEAP(...)    ALOG(LOG_WARN, HEAP_LOG_TAG, __VA_ARGS__)
89#define LOGE_HEAP(...)    ALOG(LOG_ERROR, HEAP_LOG_TAG, __VA_ARGS__)
90
91#define FRACTIONAL_MB(n)    (n) / (1024 * 1024), \
92                            ((((n) % (1024 * 1024)) / 1024) * 1000) / 1024
93#define FRACTIONAL_PCT(n,max)    ((n) * 100) / (max), \
94                                 (((n) * 1000) / (max)) % 10
95
96#endif  // DALVIK_ALLOC_HEAP_INTERNAL_H_
97