C++ KeyedVector::valueAt方法代码示例

static AString codecResultsToXml(const KeyedVector<AString, CodecSettings> &results) {
    AString ret;
    for (size_t i = 0; i < results.size(); ++i) {
        AString name;
        AString mime;
        if (!splitString(results.keyAt(i), " ", &name, &mime)) {
            continue;
        }
        AString codec =
                AStringPrintf("        <MediaCodec name=\"%s\" type=\"%s\" update=\"true\" >\n",
                              name.c_str(),
                              mime.c_str());
        ret.append(codec);
        const CodecSettings &settings = results.valueAt(i);
        for (size_t i = 0; i < settings.size(); ++i) {
            // WARNING: we assume all the settings are "Limit". Currently we have only one type
            // of setting in this case, which is "max-supported-instances".
            AString setting = AStringPrintf(
                    "            <Limit name=\"%s\" value=\"%s\" />\n",
                    settings.keyAt(i).c_str(),
                    settings.valueAt(i).c_str());
            ret.append(setting);
        }
        ret.append("        </MediaCodec>\n");
    }
    return ret;
}

sp<IMemoryHeap> HeapCache::get_heap(const sp<IBinder>& binder)
{
    sp<IMemoryHeap> realHeap;
    Mutex::Autolock _l(mHeapCacheLock);
    ssize_t i = mHeapCache.indexOfKey(binder);
    if (i>=0)   realHeap = mHeapCache.valueAt(i).heap;
    else        realHeap = interface_cast<IMemoryHeap>(binder);
    return realHeap;
}

status_t NativeInputEventSender::receiveFinishedSignals(JNIEnv* env) {
    if (kDebugDispatchCycle) {
        ALOGD("channel '%s' ~ Receiving finished signals.", getInputChannelName());
    }

    ScopedLocalRef<jobject> senderObj(env, NULL);
    bool skipCallbacks = false;
    for (;;) {
        uint32_t publishedSeq;
        bool handled;
        status_t status = mInputPublisher.receiveFinishedSignal(&publishedSeq, &handled);
        if (status) {
            if (status == WOULD_BLOCK) {
                return OK;
            }
            ALOGE("channel '%s' ~ Failed to consume finished signals.  status=%d",
                    getInputChannelName(), status);
            return status;
        }

        ssize_t index = mPublishedSeqMap.indexOfKey(publishedSeq);
        if (index >= 0) {
            uint32_t seq = mPublishedSeqMap.valueAt(index);
            mPublishedSeqMap.removeItemsAt(index);

            if (kDebugDispatchCycle) {
                ALOGD("channel '%s' ~ Received finished signal, seq=%u, handled=%s, "
                        "pendingEvents=%zu.",
                        getInputChannelName(), seq, handled ? "true" : "false",
                        mPublishedSeqMap.size());
            }

            if (!skipCallbacks) {
                if (!senderObj.get()) {
                    senderObj.reset(jniGetReferent(env, mSenderWeakGlobal));
                    if (!senderObj.get()) {
                        ALOGW("channel '%s' ~ Sender object was finalized "
                                "without being disposed.", getInputChannelName());
                        return DEAD_OBJECT;
                    }
                }

                env->CallVoidMethod(senderObj.get(),
                        gInputEventSenderClassInfo.dispatchInputEventFinished,
                        jint(seq), jboolean(handled));
                if (env->ExceptionCheck()) {
                    ALOGE("Exception dispatching finished signal.");
                    skipCallbacks = true;
                }
            }
        }
    }
}

static jobject KeyedVectorToHashMap (JNIEnv *env, KeyedVector<String8, String8> const &map) {
    jclass clazz = gFields.hashmapClassId;
    jobject hashMap = env->NewObject(clazz, gFields.hashmap.init);
    for (size_t i = 0; i < map.size(); ++i) {
        jstring jkey = env->NewStringUTF(map.keyAt(i).string());
        jstring jvalue = env->NewStringUTF(map.valueAt(i).string());
        env->CallObjectMethod(hashMap, gFields.hashmap.put, jkey, jvalue);
        env->DeleteLocalRef(jkey);
        env->DeleteLocalRef(jvalue);
    }
    return hashMap;
}

void HeapCache::dump_heaps()
{
    Mutex::Autolock _l(mHeapCacheLock);
    int c = mHeapCache.size();
    for (int i=0 ; i<c ; i++) {
        const heap_info_t& info = mHeapCache.valueAt(i);
        BpMemoryHeap const* h(static_cast<BpMemoryHeap const *>(info.heap.get()));
        ALOGD("hey=%p, heap=%p, count=%d, (fd=%d, base=%p, size=%d)",
                mHeapCache.keyAt(i).unsafe_get(),
                info.heap.get(), info.count,
                h->mHeapId, h->mBase, h->mSize);
    }
}

void HeapCache::free_heap(const wp<IBinder>& binder)
{
    sp<IMemoryHeap> rel;
    {
        Mutex::Autolock _l(mHeapCacheLock);
        ssize_t i = mHeapCache.indexOfKey(binder);
        if (i>=0) {
            heap_info_t& info(mHeapCache.editValueAt(i));
            int32_t c = android_atomic_dec(&info.count);
            if (c == 1) {
                ALOGD_IF(VERBOSE,
                        "removing binder=%p, heap=%p, size=%d, fd=%d, count=%d",
                        binder.unsafe_get(), info.heap.get(),
                        static_cast<BpMemoryHeap*>(info.heap.get())->mSize,
                        static_cast<BpMemoryHeap*>(info.heap.get())->mHeapId,
                        info.count);
                rel = mHeapCache.valueAt(i).heap;
                mHeapCache.removeItemsAt(i);
            }
        } else {
            ALOGE("free_heap binder=%p not found!!!", binder.unsafe_get());
        }
    }
}