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Diffstat (limited to 'services/medialog/MediaLogService.cpp')
-rw-r--r-- | services/medialog/MediaLogService.cpp | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/services/medialog/MediaLogService.cpp b/services/medialog/MediaLogService.cpp new file mode 100644 index 0000000..2332b3e --- /dev/null +++ b/services/medialog/MediaLogService.cpp @@ -0,0 +1,81 @@ +/* + * Copyright (C) 2013 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define LOG_TAG "MediaLog" +//#define LOG_NDEBUG 0 + +#include <sys/mman.h> +#include <utils/Log.h> +#include <media/nbaio/NBLog.h> +#include <private/android_filesystem_config.h> +#include "MediaLogService.h" + +namespace android { + +void MediaLogService::registerWriter(const sp<IMemory>& shared, size_t size, const char *name) +{ + if (IPCThreadState::self()->getCallingUid() != AID_MEDIA || shared == 0 || + size < kMinSize || size > kMaxSize || name == NULL || + shared->size() < NBLog::Timeline::sharedSize(size)) { + return; + } + sp<NBLog::Reader> reader(new NBLog::Reader(size, shared)); + NamedReader namedReader(reader, name); + Mutex::Autolock _l(mLock); + mNamedReaders.add(namedReader); +} + +void MediaLogService::unregisterWriter(const sp<IMemory>& shared) +{ + if (IPCThreadState::self()->getCallingUid() != AID_MEDIA || shared == 0) { + return; + } + Mutex::Autolock _l(mLock); + for (size_t i = 0; i < mNamedReaders.size(); ) { + if (mNamedReaders[i].reader()->isIMemory(shared)) { + mNamedReaders.removeAt(i); + } else { + i++; + } + } +} + +status_t MediaLogService::dump(int fd, const Vector<String16>& args) +{ + Vector<NamedReader> namedReaders; + { + Mutex::Autolock _l(mLock); + namedReaders = mNamedReaders; + } + for (size_t i = 0; i < namedReaders.size(); i++) { + const NamedReader& namedReader = namedReaders[i]; + if (fd >= 0) { + fdprintf(fd, "\n%s:\n", namedReader.name()); + } else { + ALOGI("%s:", namedReader.name()); + } + namedReader.reader()->dump(fd, 0 /*indent*/); + } + return NO_ERROR; +} + +status_t MediaLogService::onTransact(uint32_t code, const Parcel& data, Parcel* reply, + uint32_t flags) +{ + return BnMediaLogService::onTransact(code, data, reply, flags); +} + +} // namespace android |