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      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 
     24 struct HeapSource;
     25 
     26 struct 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 cardTableMaxLength;
     52     size_t cardTableOffset;
     53 
     54     /* Is the GC running?  Used to avoid recursive calls to GC.
     55      */
     56     bool gcRunning;
     57 
     58     /*
     59      * Debug control values
     60      */
     61     int ddmHpifWhen;
     62     int ddmHpsgWhen;
     63     int ddmHpsgWhat;
     64     int ddmNhsgWhen;
     65     int ddmNhsgWhat;
     66 };
     67 
     68 bool dvmLockHeap(void);
     69 void dvmUnlockHeap(void);
     70 
     71 /*
     72  * Logging helpers
     73  */
     74 
     75 #define HEAP_LOG_TAG      LOG_TAG "-heap"
     76 
     77 #if LOG_NDEBUG
     78 #define LOGV_HEAP(...)    ((void)0)
     79 #define LOGD_HEAP(...)    ((void)0)
     80 #else
     81 #define LOGV_HEAP(...)    ALOG(LOG_VERBOSE, HEAP_LOG_TAG, __VA_ARGS__)
     82 #define LOGD_HEAP(...)    ALOG(LOG_DEBUG, HEAP_LOG_TAG, __VA_ARGS__)
     83 #endif
     84 #define LOGI_HEAP(...) \
     85     do { \
     86         if (!gDvm.zygote) { ALOG(LOG_INFO, HEAP_LOG_TAG, __VA_ARGS__); } \
     87     } while (0)
     88 
     89 #define LOGW_HEAP(...)    ALOG(LOG_WARN, HEAP_LOG_TAG, __VA_ARGS__)
     90 #define LOGE_HEAP(...)    ALOG(LOG_ERROR, HEAP_LOG_TAG, __VA_ARGS__)
     91 
     92 #define FRACTIONAL_MB(n)    (n) / (1024 * 1024), \
     93                             ((((n) % (1024 * 1024)) / 1024) * 1000) / 1024
     94 #define FRACTIONAL_PCT(n,max)    ((n) * 100) / (max), \
     95                                  (((n) * 1000) / (max)) % 10
     96 
     97 #endif  // DALVIK_ALLOC_HEAP_INTERNAL_H_
     98