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      1 /*
      2  * Copyright (C) 2009 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 "rsObjectBase.h"
     18 #include "rsContext.h"
     19 
     20 using namespace android;
     21 using namespace android::renderscript;
     22 
     23 ObjectBase::ObjectBase(Context *rsc)
     24 {
     25     mUserRefCount = 0;
     26     mSysRefCount = 0;
     27     mName = NULL;
     28     mRSC = NULL;
     29     mNext = NULL;
     30     mPrev = NULL;
     31     mAllocFile = __FILE__;
     32     mAllocLine = __LINE__;
     33     setContext(rsc);
     34 }
     35 
     36 ObjectBase::~ObjectBase()
     37 {
     38     //LOGV("~ObjectBase %p  ref %i,%i", this, mUserRefCount, mSysRefCount);
     39     rsAssert(!mUserRefCount);
     40     rsAssert(!mSysRefCount);
     41     remove();
     42     delete[] mName;
     43 }
     44 
     45 void ObjectBase::dumpLOGV(const char *op) const
     46 {
     47     if (mName) {
     48         LOGV("%s RSobj %p, name %s, refs %i,%i  from %s,%i links %p,%p,%p",
     49              op, this, mName, mUserRefCount, mSysRefCount, mAllocFile, mAllocLine, mNext, mPrev, mRSC);
     50     } else {
     51         LOGV("%s RSobj %p, no-name, refs %i,%i  from %s,%i links %p,%p,%p",
     52              op, this, mUserRefCount, mSysRefCount, mAllocFile, mAllocLine, mNext, mPrev, mRSC);
     53     }
     54 }
     55 
     56 void ObjectBase::setContext(Context *rsc)
     57 {
     58     if (mRSC) {
     59         remove();
     60     }
     61     mRSC = rsc;
     62     if (rsc) {
     63         add();
     64     }
     65 }
     66 
     67 void ObjectBase::incUserRef() const
     68 {
     69     mUserRefCount ++;
     70     //LOGV("ObjectBase %p inc ref %i", this, mRefCount);
     71 }
     72 
     73 void ObjectBase::incSysRef() const
     74 {
     75     mSysRefCount ++;
     76     //LOGV("ObjectBase %p inc ref %i", this, mRefCount);
     77 }
     78 
     79 bool ObjectBase::checkDelete() const
     80 {
     81     if (!(mSysRefCount | mUserRefCount)) {
     82         if (mRSC && mRSC->props.mLogObjects) {
     83             dumpLOGV("checkDelete");
     84         }
     85         delete this;
     86         return true;
     87     }
     88     return false;
     89 }
     90 
     91 bool ObjectBase::decUserRef() const
     92 {
     93     rsAssert(mUserRefCount > 0);
     94     mUserRefCount --;
     95     //dumpObj("decUserRef");
     96     return checkDelete();
     97 }
     98 
     99 bool ObjectBase::zeroUserRef() const
    100 {
    101     mUserRefCount = 0;
    102     //dumpObj("zeroUserRef");
    103     return checkDelete();
    104 }
    105 
    106 bool ObjectBase::decSysRef() const
    107 {
    108     rsAssert(mSysRefCount > 0);
    109     mSysRefCount --;
    110     //dumpObj("decSysRef");
    111     return checkDelete();
    112 }
    113 
    114 void ObjectBase::setName(const char *name)
    115 {
    116     setName(name, strlen(name));
    117 }
    118 
    119 void ObjectBase::setName(const char *name, uint32_t len)
    120 {
    121     delete mName;
    122     mName = NULL;
    123     if (name) {
    124         mName = new char[len + 1];
    125         memcpy(mName, name, len);
    126         mName[len] = 0;
    127     }
    128 }
    129 
    130 void ObjectBase::add() const
    131 {
    132     rsAssert(!mNext);
    133     rsAssert(!mPrev);
    134     //LOGV("calling add  rsc %p", mRSC);
    135     mNext = mRSC->mObjHead;
    136     if (mRSC->mObjHead) {
    137         mRSC->mObjHead->mPrev = this;
    138     }
    139     mRSC->mObjHead = this;
    140 }
    141 
    142 void ObjectBase::remove() const
    143 {
    144     //LOGV("calling remove  rsc %p", mRSC);
    145     if (!mRSC) {
    146         rsAssert(!mPrev);
    147         rsAssert(!mNext);
    148         return;
    149     }
    150     if (mRSC->mObjHead == this) {
    151         mRSC->mObjHead = mNext;
    152     }
    153     if (mPrev) {
    154         mPrev->mNext = mNext;
    155     }
    156     if (mNext) {
    157         mNext->mPrev = mPrev;
    158     }
    159     mPrev = NULL;
    160     mNext = NULL;
    161 }
    162 
    163 void ObjectBase::zeroAllUserRef(Context *rsc)
    164 {
    165     if (rsc->props.mLogObjects) {
    166         LOGV("Forcing release of all outstanding user refs.");
    167     }
    168 
    169     // This operation can be slow, only to be called during context cleanup.
    170     const ObjectBase * o = rsc->mObjHead;
    171     while (o) {
    172         //LOGE("o %p", o);
    173         if (o->zeroUserRef()) {
    174             // deleted the object and possibly others, restart from head.
    175             o = rsc->mObjHead;
    176             //LOGE("o head %p", o);
    177         } else {
    178             o = o->mNext;
    179             //LOGE("o next %p", o);
    180         }
    181     }
    182 
    183     if (rsc->props.mLogObjects) {
    184         LOGV("Objects remaining.");
    185         dumpAll(rsc);
    186     }
    187 }
    188 
    189 void ObjectBase::dumpAll(Context *rsc)
    190 {
    191     LOGV("Dumping all objects");
    192     const ObjectBase * o = rsc->mObjHead;
    193     while (o) {
    194         LOGV(" Object %p", o);
    195         o->dumpLOGV("  ");
    196         o = o->mNext;
    197     }
    198 }
    199 
    200