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combat memory leaks with smart pointers

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Green Sky 2024-03-06 12:30:07 +01:00
parent 88ea3e177d
commit 7879a0927b
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1 changed files with 10 additions and 13 deletions
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23
src/fragment_store/fragment_store.cpp
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@ -390,9 +390,9 @@ bool FragmentStore::syncToStorage(FragmentID fid, std::function<write_to_storage
std::vector<uint8_t> compressed_buffer(ZSTD_CStreamOutSize()); std::vector<uint8_t> compressed_buffer(ZSTD_CStreamOutSize());
uint64_t buffer_actual_size {0}; uint64_t buffer_actual_size {0};
ZSTD_CCtx* const cctx = ZSTD_createCCtx(); std::unique_ptr<ZSTD_CCtx, decltype(&ZSTD_freeCCtx)> cctx{ZSTD_createCCtx(), &ZSTD_freeCCtx};
ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 0); // default (3) ZSTD_CCtx_setParameter(cctx.get(), ZSTD_c_compressionLevel, 0); // default (3)
ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1); // add extra checksums (to frames?) ZSTD_CCtx_setParameter(cctx.get(), ZSTD_c_checksumFlag, 1); // add extra checksums (to frames?)
do { do {
buffer_actual_size = data_cb(buffer.data(), buffer.size()); buffer_actual_size = data_cb(buffer.data(), buffer.size());
//if (buffer_actual_size == 0) { //if (buffer_actual_size == 0) {
@ -410,7 +410,7 @@ bool FragmentStore::syncToStorage(FragmentID fid, std::function<write_to_storage
while (input.pos < input.size) { while (input.pos < input.size) {
ZSTD_outBuffer output = { compressed_buffer.data(), compressed_buffer.size(), 0 }; ZSTD_outBuffer output = { compressed_buffer.data(), compressed_buffer.size(), 0 };
size_t const remaining = ZSTD_compressStream2(cctx, &output , &input, mode); size_t const remaining = ZSTD_compressStream2(cctx.get(), &output , &input, mode);
if (ZSTD_isError(remaining)) { if (ZSTD_isError(remaining)) {
std::cerr << "FS error: compressing data failed\n"; std::cerr << "FS error: compressing data failed\n";
break; break;
@ -515,7 +515,7 @@ bool FragmentStore::loadFromStorage(FragmentID fid, std::function<read_from_stor
} else if (data_comp == Compression::ZSTD) { } else if (data_comp == Compression::ZSTD) {
std::vector<uint8_t> in_buffer(ZSTD_DStreamInSize()); std::vector<uint8_t> in_buffer(ZSTD_DStreamInSize());
std::vector<uint8_t> out_buffer(ZSTD_DStreamOutSize()); std::vector<uint8_t> out_buffer(ZSTD_DStreamOutSize());
ZSTD_DCtx* const dctx = ZSTD_createDCtx(); std::unique_ptr<ZSTD_DCtx, decltype(&ZSTD_freeDCtx)> dctx{ZSTD_createDCtx(), &ZSTD_freeDCtx};
uint64_t buffer_actual_size {0}; uint64_t buffer_actual_size {0};
do { do {
@ -528,7 +528,7 @@ bool FragmentStore::loadFromStorage(FragmentID fid, std::function<read_from_stor
ZSTD_inBuffer input {in_buffer.data(), buffer_actual_size, 0 }; ZSTD_inBuffer input {in_buffer.data(), buffer_actual_size, 0 };
do { do {
ZSTD_outBuffer output = { out_buffer.data(), out_buffer.size(), 0 }; ZSTD_outBuffer output = { out_buffer.data(), out_buffer.size(), 0 };
size_t const ret = ZSTD_decompressStream(dctx, &output , &input); size_t const ret = ZSTD_decompressStream(dctx.get(), &output , &input);
if (ZSTD_isError(ret)) { if (ZSTD_isError(ret)) {
// error <.< // error <.<
std::cerr << "FS error: decompression error\n"; std::cerr << "FS error: decompression error\n";
@ -538,8 +538,6 @@ bool FragmentStore::loadFromStorage(FragmentID fid, std::function<read_from_stor
data_cb(out_buffer.data(), output.pos); data_cb(out_buffer.data(), output.pos);
} while (input.pos < input.size); } while (input.pos < input.size);
} while (buffer_actual_size == in_buffer.size() && !data_file.eof()); } while (buffer_actual_size == in_buffer.size() && !data_file.eof());
ZSTD_freeDCtx(dctx);
} else { } else {
assert(false && "implement me"); assert(false && "implement me");
} }
@ -747,22 +745,21 @@ size_t FragmentStore::scanStoragePath(std::string_view path) {
// do nothing // do nothing
} else if (meta_comp == Compression::ZSTD) { } else if (meta_comp == Compression::ZSTD) {
meta_data_decomp.resize(ZSTD_DStreamOutSize()); meta_data_decomp.resize(ZSTD_DStreamOutSize());
ZSTD_DCtx* const dctx = ZSTD_createDCtx(); std::unique_ptr<ZSTD_DCtx, decltype(&ZSTD_freeDCtx)> dctx{ZSTD_createDCtx(), &ZSTD_freeDCtx};
ZSTD_inBuffer input {meta_data_ref.data(), meta_data_ref.size(), 0}; ZSTD_inBuffer input {meta_data_ref.data(), meta_data_ref.size(), 0};
ZSTD_outBuffer output = {meta_data_decomp.data(), meta_data_decomp.size(), 0}; ZSTD_outBuffer output = {meta_data_decomp.data(), meta_data_decomp.size(), 0};
do { do {
size_t const ret = ZSTD_decompressStream(dctx, &output , &input); size_t const ret = ZSTD_decompressStream(dctx.get(), &output , &input);
if (ZSTD_isError(ret)) { if (ZSTD_isError(ret)) {
// error <.< // error <.<
std::cerr << "FS error: decompression error\n"; std::cerr << "FS error: decompression error\n";
meta_data_decomp.clear(); //meta_data_decomp.clear();
output.pos = 0; // resize after loop
break; break;
} }
} while (input.pos < input.size); } while (input.pos < input.size);
meta_data_decomp.resize(output.pos); meta_data_decomp.resize(output.pos);
ZSTD_freeDCtx(dctx);
} else { } else {
assert(false && "implement me"); assert(false && "implement me");
} }