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Commit 7da4b72c authored by Daniel Zheng's avatar Daniel Zheng Committed by Automerger Merge Worker
Browse files

Merge "Adding struct to hold compresion parameters" into main am: 5061a1ce... 

Merge "Adding struct to hold compresion parameters" into main am: 5061a1ce am: 1f0b04a3 am: 0dd8b96f am: 5f5e67f1

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2697599



Change-Id: I4d864b73baa96bb567fca44373d91217a56a636d
Signed-off-by: default avatarAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
parents fc7bd8e8 5f5e67f1

fs_mgr/libsnapshot/include/libsnapshot/cow_format.h

+4 −0
Original line number Diff line number Diff line
@@ -161,6 +161,10 @@ enum CowCompressionAlgorithm : uint8_t { 
    kCowCompressLz4 = 3,

    kCowCompressZstd = 4,

};

struct CowCompression {

    CowCompressionAlgorithm algorithm = kCowCompressNone;

    uint32_t compression_level = 0;

};



static constexpr uint8_t kCowReadAheadNotStarted = 0;

static constexpr uint8_t kCowReadAheadInProgress = 1;

fs_mgr/libsnapshot/libsnapshot_cow/test_v2.cpp

+2 −1
Original line number Diff line number Diff line
@@ -472,9 +472,10 @@ TEST_P(CompressionTest, HorribleStream) { 
    if (strcmp(GetParam(), "none") == 0) {

        GTEST_SKIP();

    }



    CowCompression compression;

    auto algorithm = CompressionAlgorithmFromString(GetParam());

    ASSERT_TRUE(algorithm.has_value());

    compression.algorithm = algorithm.value();



    std::string expected = "The quick brown fox jumps over the lazy dog.";

    expected.resize(4096, '\0');

fs_mgr/libsnapshot/libsnapshot_cow/writer_v2.cpp

+9 −9
Original line number Diff line number Diff line
@@ -124,7 +124,7 @@ bool CowWriterV2::ParseOptions() { 
        LOG(ERROR) << "unrecognized compression: " << options_.compression;

        return false;

    }

    compression_ = *algorithm;

    compression_.algorithm = *algorithm;



    if (options_.cluster_ops == 1) {

        LOG(ERROR) << "Clusters must contain at least two operations to function.";
@@ -165,7 +165,7 @@ void CowWriterV2::InitWorkers() { 
        return;

    }

    for (int i = 0; i < num_compress_threads_; i++) {

        auto wt = std::make_unique<CompressWorker>(compression_, header_.block_size);

        auto wt = std::make_unique<CompressWorker>(compression_.algorithm, header_.block_size);

        threads_.emplace_back(std::async(std::launch::async, &CompressWorker::RunThread, wt.get()));

        compress_threads_.push_back(std::move(wt));

    }
@@ -320,8 +320,8 @@ bool CowWriterV2::CompressBlocks(size_t num_blocks, const void* data) { 
    const uint8_t* iter = reinterpret_cast<const uint8_t*>(data);

    compressed_buf_.clear();

    if (num_threads <= 1) {

        return CompressWorker::CompressBlocks(compression_, options_.block_size, data, num_blocks,

                                              &compressed_buf_);

        return CompressWorker::CompressBlocks(compression_.algorithm, options_.block_size, data,

                                              num_blocks, &compressed_buf_);

    }



    // Submit the blocks per thread. The retrieval of
@@ -366,7 +366,7 @@ bool CowWriterV2::EmitBlocks(uint64_t new_block_start, const void* data, size_t 
    while (num_blocks) {

        size_t pending_blocks = (std::min(kProcessingBlocks, num_blocks));



        if (compression_ && num_compress_threads_ > 1) {

        if (compression_.algorithm && num_compress_threads_ > 1) {

            if (!CompressBlocks(pending_blocks, iter)) {

                return false;

            }
@@ -386,19 +386,19 @@ bool CowWriterV2::EmitBlocks(uint64_t new_block_start, const void* data, size_t 
                op.source = next_data_pos_;

            }



            if (compression_) {

            if (compression_.algorithm) {

                auto data = [&, this]() {

                    if (num_compress_threads_ > 1) {

                        auto data = std::move(*buf_iter_);

                        buf_iter_++;

                        return data;

                    } else {

                        auto data =

                                CompressWorker::Compress(compression_, iter, header_.block_size);

                        auto data = CompressWorker::Compress(compression_.algorithm, iter,

                                                             header_.block_size);

                        return data;

                    }

                }();

                op.compression = compression_;

                op.compression = compression_.algorithm;

                op.data_length = static_cast<uint16_t>(data.size());



                if (!WriteOperation(op, data.data(), data.size())) {

fs_mgr/libsnapshot/libsnapshot_cow/writer_v2.h

+1 −1
Original line number Diff line number Diff line
@@ -63,7 +63,7 @@ class CowWriterV2 : public CowWriterBase { 


  private:

    CowFooter footer_{};

    CowCompressionAlgorithm compression_ = kCowCompressNone;

    CowCompression compression_;

    uint64_t current_op_pos_ = 0;

    uint64_t next_op_pos_ = 0;

    uint64_t next_data_pos_ = 0;