C++ String8::size方法代码示例

status_t AudioPolicyService::AudioCommandThread::dump(int fd)
{
    const size_t SIZE = 256;
    char buffer[SIZE];
    String8 result;

    snprintf(buffer, SIZE, "AudioCommandThread %p Dump\n", this);
    result.append(buffer);
    write(fd, result.string(), result.size());

    bool locked = tryLock(mLock);
    if (!locked) {
        String8 result2(kCmdDeadlockedString);
        write(fd, result2.string(), result2.size());
    }

    snprintf(buffer, SIZE, "- Commands:\n");
    result = String8(buffer);
    result.append("   Command Time        Wait pParam\n");
    for (int i = 0; i < (int)mAudioCommands.size(); i++) {
        mAudioCommands[i]->dump(buffer, SIZE);
        result.append(buffer);
    }
    result.append("  Last Command\n");
    mLastCommand.dump(buffer, SIZE);
    result.append(buffer);

    write(fd, result.string(), result.size());

    if (locked) mLock.unlock();

    return NO_ERROR;
}

status_t StreamingProcessor::dump(int fd, const Vector<String16>& /*args*/) {
    String8 result;

    result.append("  Current requests:\n");
    if (mPreviewRequest.entryCount() != 0) {
        result.append("    Preview request:\n");
        write(fd, result.string(), result.size());
        mPreviewRequest.dump(fd, 2, 6);
        result.clear();
    } else {
        result.append("    Preview request: undefined\n");
    }

    if (mRecordingRequest.entryCount() != 0) {
        result = "    Recording request:\n";
        write(fd, result.string(), result.size());
        mRecordingRequest.dump(fd, 2, 6);
        result.clear();
    } else {
        result = "    Recording request: undefined\n";
    }

    const char* streamTypeString[] = {
        "none", "preview", "record"
    };
    result.append(String8::format("   Active request: %s (paused: %s)\n",
                                  streamTypeString[mActiveRequest],
                                  mPaused ? "yes" : "no"));

    write(fd, result.string(), result.size());

    return OK;
}

/*
 * Retrieve the native heap information and the info from /proc/self/maps,
 * copy them into a byte[] with a "struct Header" that holds data offsets,
 * and return the array.
 */
static jbyteArray DdmHandleNativeHeap_getLeakInfo(JNIEnv* env, jobject) {
    Header header;
    memset(&header, 0, sizeof(header));

    String8 maps;
    ReadFile("/proc/self/maps", maps);
    header.mapSize = maps.size();

    uint8_t* allocBytes;
    get_malloc_leak_info(&allocBytes, &header.allocSize, &header.allocInfoSize,
                         &header.totalMemory, &header.backtraceSize);

    ALOGD("*** mapSize: %zu allocSize: %zu allocInfoSize: %zu totalMemory: %zu",
          header.mapSize, header.allocSize, header.allocInfoSize, header.totalMemory);

#if defined(__LP64__)
    header.signature = DDMS_HEADER_SIGNATURE;
    header.version = DDMS_VERSION;
    header.pointerSize = sizeof(void*);
#endif

    jbyteArray array = env->NewByteArray(sizeof(Header) + header.mapSize + header.allocSize);
    if (array != NULL) {
        env->SetByteArrayRegion(array, 0,
                                sizeof(header), reinterpret_cast<jbyte*>(&header));
        env->SetByteArrayRegion(array, sizeof(header),
                                maps.size(), reinterpret_cast<const jbyte*>(maps.string()));
        env->SetByteArrayRegion(array, sizeof(header) + maps.size(),
                                header.allocSize, reinterpret_cast<jbyte*>(allocBytes));
    }

    free_malloc_leak_info(allocBytes);
    return array;
}

status_t CameraService::dump(int fd, const Vector<String16>& args) {
    static const char* kDeadlockedString = "CameraService may be deadlocked\n";

    const size_t SIZE = 256;
    char buffer[SIZE];
    String8 result;
    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
        snprintf(buffer, SIZE, "Permission Denial: "
                "can't dump CameraService from pid=%d, uid=%d\n",
                getCallingPid(),
                getCallingUid());
        result.append(buffer);
        write(fd, result.string(), result.size());
    } else {
        bool locked = tryLock(mServiceLock);
        // failed to lock - CameraService is probably deadlocked
        if (!locked) {
            String8 result(kDeadlockedString);
            write(fd, result.string(), result.size());
        }

        bool hasClient = false;
        for (int i = 0; i < mNumberOfCameras; i++) {
            sp<Client> client = mClient[i].promote();
            if (client == 0) continue;
            hasClient = true;
            sprintf(buffer, "Client[%d] (%p) PID: %d\n",
                    i,
                    client->getCameraClient()->asBinder().get(),
                    client->mClientPid);
            result.append(buffer);
            write(fd, result.string(), result.size());
            client->mHardware->dump(fd, args);
        }
        if (!hasClient) {
            result.append("No camera client yet.\n");
            write(fd, result.string(), result.size());
        }

        if (locked) mServiceLock.unlock();

        // change logging level
        int n = args.size();
        for (int i = 0; i + 1 < n; i++) {
            if (args[i] == String16("-v")) {
                String8 levelStr(args[i+1]);
                int level = atoi(levelStr.string());
                sprintf(buffer, "Set Log Level to %d", level);
                result.append(buffer);
                setLogLevel(level);
            }
        }
    }
    return NO_ERROR;
}

void Camera3ZslStream::dump(int fd, const Vector<String16> &args) const {
    (void) args;

    String8 lines;
    lines.appendFormat("    Stream[%d]: ZSL\n", mId);
    write(fd, lines.string(), lines.size());

    Camera3IOStreamBase::dump(fd, args);

    lines = String8();
    lines.appendFormat("      Input buffers pending: %zu, in flight %zu\n",
            mInputBufferQueue.size(), mBuffersInFlight.size());
    write(fd, lines.string(), lines.size());
}

status_t AudioHardware::AudioStreamOutMSM72xx::dump(int fd, const Vector<String16>& args)
{
    const size_t SIZE = 256;
    char buffer[SIZE];
    String8 result;
    result.append("AudioStreamOutMSM72xx::dump\n");
    snprintf(buffer, SIZE, "\tsample rate: %d\n", sampleRate());
    result.append(buffer);
    snprintf(buffer, SIZE, "\tbuffer size: %d\n", bufferSize());
    result.append(buffer);
    snprintf(buffer, SIZE, "\tchannels: %d\n", channels());
    result.append(buffer);
    snprintf(buffer, SIZE, "\tformat: %d\n", format());
    result.append(buffer);
    snprintf(buffer, SIZE, "\tmHardware: %p\n", mHardware);
    result.append(buffer);
    snprintf(buffer, SIZE, "\tmFd: %d\n", mFd);
    result.append(buffer);
    snprintf(buffer, SIZE, "\tmStartCount: %d\n", mStartCount);
    result.append(buffer);
    snprintf(buffer, SIZE, "\tmRetryCount: %d\n", mRetryCount);
    result.append(buffer);
    snprintf(buffer, SIZE, "\tmStandby: %s\n", mStandby? "true": "false");
    result.append(buffer);
    ::write(fd, result.string(), result.size());
    return NO_ERROR;
}

void AudioGain::dump(int fd, int spaces, int index) const
{
    const size_t SIZE = 256;
    char buffer[SIZE];
    String8 result;

    snprintf(buffer, SIZE, "%*sGain %d:\n", spaces, "", index+1);
    result.append(buffer);
    snprintf(buffer, SIZE, "%*s- mode: %08x\n", spaces, "", mGain.mode);
    result.append(buffer);
    snprintf(buffer, SIZE, "%*s- channel_mask: %08x\n", spaces, "", mGain.channel_mask);
    result.append(buffer);
    snprintf(buffer, SIZE, "%*s- min_value: %d mB\n", spaces, "", mGain.min_value);
    result.append(buffer);
    snprintf(buffer, SIZE, "%*s- max_value: %d mB\n", spaces, "", mGain.max_value);
    result.append(buffer);
    snprintf(buffer, SIZE, "%*s- default_value: %d mB\n", spaces, "", mGain.default_value);
    result.append(buffer);
    snprintf(buffer, SIZE, "%*s- step_value: %d mB\n", spaces, "", mGain.step_value);
    result.append(buffer);
    snprintf(buffer, SIZE, "%*s- min_ramp_ms: %d ms\n", spaces, "", mGain.min_ramp_ms);
    result.append(buffer);
    snprintf(buffer, SIZE, "%*s- max_ramp_ms: %d ms\n", spaces, "", mGain.max_ramp_ms);
    result.append(buffer);

    write(fd, result.string(), result.size());
}

status_t MemPool::dump(int fd, const Vector<String16>& args) const
{
    const size_t SIZE = 256;
    char buffer[SIZE];
    String8 result;
    CAMERA_HAL_UNUSED(args);
    snprintf(buffer, 255, "QualcommCameraHardware::AshmemPool::dump\n");
    result.append(buffer);
    if (mName) {
        snprintf(buffer, 255, "mem pool name (%s)\n", mName);
        result.append(buffer);
    }
    if (mHeap != 0) {
        snprintf(buffer, 255, "heap base(%p), size(%d), flags(%d), device(%s)\n",
                 mHeap->getBase(), mHeap->getSize(),
                 mHeap->getFlags(), mHeap->getDevice());
        result.append(buffer);
    }
    snprintf(buffer, 255,
             "buffer size (%d), number of buffers (%d), frame size(%d)",
             mBufferSize, mNumBuffers, mFrameSize);
    result.append(buffer);
    write(fd, result.string(), result.size());
    return NO_ERROR;
}

void ZslProcessor3::dumpZslQueue(int fd) const {
    String8 header("ZSL queue contents:");
    String8 indent("    ");
    ALOGV("%s", header.string());
    if (fd != -1) {
        header = indent + header + "\n";
        write(fd, header.string(), header.size());
    }
    for (size_t i = 0; i < mZslQueue.size(); i++) {
        const ZslPair &queueEntry = mZslQueue[i];
        nsecs_t bufferTimestamp = queueEntry.buffer.mTimestamp;
        camera_metadata_ro_entry_t entry;
        nsecs_t frameTimestamp = 0;
        int frameAeState = -1;
        if (!queueEntry.frame.isEmpty()) {
            entry = queueEntry.frame.find(ANDROID_SENSOR_TIMESTAMP);
            if (entry.count > 0) frameTimestamp = entry.data.i64[0];
            entry = queueEntry.frame.find(ANDROID_CONTROL_AE_STATE);
            if (entry.count > 0) frameAeState = entry.data.u8[0];
        }
        String8 result =
                String8::format("   %d: b: %lld\tf: %lld, AE state: %d", i,
                        bufferTimestamp, frameTimestamp, frameAeState);
        ALOGV("%s", result.string());
        if (fd != -1) {
            result = indent + result + "\n";
            write(fd, result.string(), result.size());
        }

    }
}

android::status_t InitDataParser::parse(const Vector<uint8_t>& initData,
        const String8& type,
        Vector<uint8_t>* licenseRequest) {
    // Build a list of the key IDs
    Vector<const uint8_t*> keyIds;
    if (type == kIsoBmffVideoMimeType ||
        type == kIsoBmffAudioMimeType ||
        type == kCencInitDataFormat) {
        android::status_t res = parsePssh(initData, &keyIds);
        if (res != android::OK) {
            return res;
        }
    } else if (type == kWebmVideoMimeType ||
        type == kWebmAudioMimeType ||
        type == kWebmInitDataFormat) {
        // WebM "init data" is just a single key ID
        if (initData.size() != kKeyIdSize) {
            return android::ERROR_DRM_CANNOT_HANDLE;
        }
        keyIds.push(initData.array());
    } else {
        return android::ERROR_DRM_CANNOT_HANDLE;
    }

    // Build the request
    String8 requestJson = generateRequest(keyIds);
    licenseRequest->clear();
    licenseRequest->appendArray(
            reinterpret_cast<const uint8_t*>(requestJson.string()),
            requestJson.size());
    return android::OK;
}

status_t CameraDeviceClient::dumpClient(int fd, const Vector<String16>& args) {
    String8 result;
    result.appendFormat("CameraDeviceClient[%d] (%p) dump:\n",
            mCameraId,
            (getRemoteCallback() != NULL ?
                    IInterface::asBinder(getRemoteCallback()).get() : NULL) );
    result.appendFormat("  Current client UID %u\n", mClientUid);

    result.append("  State:\n");
    result.appendFormat("    Request ID counter: %d\n", mRequestIdCounter);
    if (mInputStream.configured) {
        result.appendFormat("    Current input stream ID: %d\n",
                    mInputStream.id);
    } else {
        result.append("    No input stream configured.\n");
    }
    if (!mStreamMap.isEmpty()) {
        result.append("    Current output stream IDs:\n");
        for (size_t i = 0; i < mStreamMap.size(); i++) {
            result.appendFormat("      Stream %d\n", mStreamMap.valueAt(i));
        }
    } else {
        result.append("    No output streams configured.\n");
    }
    write(fd, result.string(), result.size());
    // TODO: print dynamic/request section from most recent requests
    mFrameProcessor->dump(fd, args);

    return dumpDevice(fd, args);
}

status_t DrmManagerService::dump(int fd, const Vector<String16>& args)
{
    const size_t SIZE = 256;
    char buffer[SIZE];
    String8 result;
    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
        snprintf(buffer, SIZE, "Permission Denial: "
                "can't dump DrmManagerService from pid=%d, uid=%d\n",
                IPCThreadState::self()->getCallingPid(),
                IPCThreadState::self()->getCallingUid());
        result.append(buffer);
    } else {
#if DRM_MEMORY_LEAK_TRACK
        bool dumpMem = false;
        for (size_t i = 0; i < args.size(); i++) {
            if (args[i] == String16("-m")) {
                dumpMem = true;
            }
        }
        if (dumpMem) {
            dumpMemoryAddresses(fd);
        }
#endif
    }
    write(fd, result.string(), result.size());
    return NO_ERROR;
}

void Camera3InputStream::dump(int fd, const Vector<String16> &args) const {
    (void) args;
    String8 lines;
    lines.appendFormat("    Stream[%d]: Input\n", mId);
    write(fd, lines.string(), lines.size());

    Camera3IOStreamBase::dump(fd, args);
}

status_t TinyAudioHardware::dumpInternals(int fd, const Vector<String16>& args)
{
    const size_t SIZE = 256;
    char buffer[SIZE];
    String8 result;
    ::write(fd, result.string(), result.size());
    return NO_ERROR;
}

status_t CameraMetadata::update(uint32_t tag,
        const String8 &string) {
    status_t res;
    if ( (res = checkType(tag, TYPE_BYTE)) != OK) {
        return res;
    }
    return update(tag, (const void*)string.string(), string.size());
}