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Change ReadAsync callback API to remove const from FSReadRequest (#11649) 

Summary:
Modify ReadAsync callback API to remove const from FSReadRequest as const doesn't let to fs_scratch to move the ownership.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11649

Test Plan: CircleCI jobs

Reviewed By: anand1976

Differential Revision: D53585309

Pulled By: akankshamahajan15

fbshipit-source-id: 3bff9035db0e6fbbe34721a5963443355807420d
This commit is contained in:
Akanksha Mahajan 2024-02-16 09:14:55 -08:00 committed by Facebook GitHub Bot
parent 28c1c15c29
commit 956f1dfde3
15 changed files with 42 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
db/db_basic_test.cc
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@ -4277,7 +4277,7 @@ class DeadlineRandomAccessFile : public FSRandomAccessFileOwnerWrapper {
const IOOptions& options, IODebugContext* dbg) override;
IOStatus ReadAsync(FSReadRequest& req, const IOOptions& opts,
std::function<void(const FSReadRequest&, void*)> cb,
std::function<void(FSReadRequest&, void*)> cb,
void* cb_arg, void** io_handle, IOHandleDeleter* del_fn,
IODebugContext* dbg) override;
@ -4423,7 +4423,7 @@ IOStatus DeadlineRandomAccessFile::Read(uint64_t offset, size_t len,
IOStatus DeadlineRandomAccessFile::ReadAsync(
FSReadRequest& req, const IOOptions& opts,
std::function<void(const FSReadRequest&, void*)> cb, void* cb_arg,
std::function<void(FSReadRequest&, void*)> cb, void* cb_arg,
void** io_handle, IOHandleDeleter* del_fn, IODebugContext* dbg) {
const std::chrono::microseconds deadline = fs_.GetDeadline();
const std::chrono::microseconds io_timeout = fs_.GetIOTimeout();

2
db_stress_tool/db_stress_env_wrapper.h
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@ -60,7 +60,7 @@ class DbStressRandomAccessFileWrapper : public FSRandomAccessFileOwnerWrapper {
}
IOStatus ReadAsync(FSReadRequest& req, const IOOptions& options,
std::function<void(const FSReadRequest&, void*)> cb,
std::function<void(FSReadRequest&, void*)> cb,
void* cb_arg, void** io_handle, IOHandleDeleter* del_fn,
IODebugContext* dbg) override {
#ifndef NDEBUG

10
env/env_test.cc vendored
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@ -3447,7 +3447,7 @@ TEST_F(CreateEnvTest, CreateCompositeEnv) {
class ReadAsyncFS;
struct MockIOHandle {
std::function<void(const FSReadRequest&, void*)> cb;
std::function<void(FSReadRequest&, void*)> cb;
void* cb_arg;
bool create_io_error;
};
@ -3462,7 +3462,7 @@ class ReadAsyncRandomAccessFile : public FSRandomAccessFileOwnerWrapper {
: FSRandomAccessFileOwnerWrapper(std::move(file)), fs_(fs) {}
IOStatus ReadAsync(FSReadRequest& req, const IOOptions& opts,
std::function<void(const FSReadRequest&, void*)> cb,
std::function<void(FSReadRequest&, void*)> cb,
void* cb_arg, void** io_handle, IOHandleDeleter* del_fn,
IODebugContext* dbg) override;
@ -3514,7 +3514,7 @@ class ReadAsyncFS : public FileSystemWrapper {
IOStatus ReadAsyncRandomAccessFile::ReadAsync(
FSReadRequest& req, const IOOptions& opts,
std::function<void(const FSReadRequest&, void*)> cb, void* cb_arg,
std::function<void(FSReadRequest&, void*)> cb, void* cb_arg,
void** io_handle, IOHandleDeleter* del_fn, IODebugContext* dbg) {
IOHandleDeleter deletefn = [](void* args) -> void {
delete (static_cast<MockIOHandle*>(args));
@ -3602,8 +3602,8 @@ TEST_F(TestAsyncRead, ReadAsync) {
}
// callback function passed to async read.
std::function<void(const FSReadRequest&, void*)> callback =
[&](const FSReadRequest& req, void* cb_arg) {
std::function<void(FSReadRequest&, void*)> callback =
[&](FSReadRequest& req, void* cb_arg) {
assert(cb_arg != nullptr);
size_t i = *(reinterpret_cast<size_t*>(cb_arg));
reqs[i].offset = req.offset;

6
env/file_system_tracer.cc vendored
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@ -340,7 +340,7 @@ IOStatus FSRandomAccessFileTracingWrapper::InvalidateCache(size_t offset,
IOStatus FSRandomAccessFileTracingWrapper::ReadAsync(
FSReadRequest& req, const IOOptions& opts,
std::function<void(const FSReadRequest&, void*)> cb, void* cb_arg,
std::function<void(FSReadRequest&, void*)> cb, void* cb_arg,
void** io_handle, IOHandleDeleter* del_fn, IODebugContext* dbg) {
// Create a callback and populate info.
auto read_async_callback =
@ -361,8 +361,8 @@ IOStatus FSRandomAccessFileTracingWrapper::ReadAsync(
return s;
}
void FSRandomAccessFileTracingWrapper::ReadAsyncCallback(
const FSReadRequest& req, void* cb_arg) {
void FSRandomAccessFileTracingWrapper::ReadAsyncCallback(FSReadRequest& req,
void* cb_arg) {
ReadAsyncCallbackInfo* read_async_cb_info =
static_cast<ReadAsyncCallbackInfo*>(cb_arg);
assert(read_async_cb_info);

6
env/file_system_tracer.h vendored
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@ -229,11 +229,11 @@ class FSRandomAccessFileTracingWrapper : public FSRandomAccessFileOwnerWrapper {
IOStatus InvalidateCache(size_t offset, size_t length) override;
IOStatus ReadAsync(FSReadRequest& req, const IOOptions& opts,
std::function<void(const FSReadRequest&, void*)> cb,
std::function<void(FSReadRequest&, void*)> cb,
void* cb_arg, void** io_handle, IOHandleDeleter* del_fn,
IODebugContext* dbg) override;
void ReadAsyncCallback(const FSReadRequest& req, void* cb_arg);
void ReadAsyncCallback(FSReadRequest& req, void* cb_arg);
private:
std::shared_ptr<IOTracer> io_tracer_;
@ -243,7 +243,7 @@ class FSRandomAccessFileTracingWrapper : public FSRandomAccessFileOwnerWrapper {
struct ReadAsyncCallbackInfo {
uint64_t start_time_;
std::function<void(const FSReadRequest&, void*)> cb_;
std::function<void(FSReadRequest&, void*)> cb_;
void* cb_arg_;
std::string file_op_;
};

2
env/io_posix.cc vendored
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@ -857,7 +857,7 @@ IOStatus PosixRandomAccessFile::InvalidateCache(size_t offset, size_t length) {
IOStatus PosixRandomAccessFile::ReadAsync(
FSReadRequest& req, const IOOptions& /*opts*/,
std::function<void(const FSReadRequest&, void*)> cb, void* cb_arg,
std::function<void(FSReadRequest&, void*)> cb, void* cb_arg,
void** io_handle, IOHandleDeleter* del_fn, IODebugContext* /*dbg*/) {
if (use_direct_io()) {
assert(IsSectorAligned(req.offset, GetRequiredBufferAlignment()));

15
env/io_posix.h vendored
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@ -76,8 +76,8 @@ inline bool IsSectorAligned(const void* ptr, size_t sector_size) {
#if defined(ROCKSDB_IOURING_PRESENT)
struct Posix_IOHandle {
Posix_IOHandle(struct io_uring* _iu,
std::function<void(const FSReadRequest&, void*)> _cb,
void* _cb_arg, uint64_t _offset, size_t _len, char* _scratch,
std::function<void(FSReadRequest&, void*)> _cb, void* _cb_arg,
uint64_t _offset, size_t _len, char* _scratch,
bool _use_direct_io, size_t _alignment)
: iu(_iu),
cb(_cb),
@ -92,7 +92,7 @@ struct Posix_IOHandle {
struct iovec iov;
struct io_uring* iu;
std::function<void(const FSReadRequest&, void*)> cb;
std::function<void(FSReadRequest&, void*)> cb;
void* cb_arg;
uint64_t offset;
size_t len;
@ -317,10 +317,11 @@ class PosixRandomAccessFile : public FSRandomAccessFile {
size_t GetRequiredBufferAlignment() const override {
return logical_sector_size_;
}
// EXPERIMENTAL
IOStatus ReadAsync(FSReadRequest& req, const IOOptions& opts,
std::function<void(const FSReadRequest&, void*)> cb,
void* cb_arg, void** io_handle, IOHandleDeleter* del_fn,
virtual IOStatus ReadAsync(FSReadRequest& req, const IOOptions& opts,
std::function<void(FSReadRequest&, void*)> cb,
void* cb_arg, void** io_handle,
IOHandleDeleter* del_fn,
IODebugContext* dbg) override;
};

2
file/file_prefetch_buffer.cc
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@ -790,7 +790,7 @@ bool FilePrefetchBuffer::TryReadFromCacheUntracked(
return true;
}
void FilePrefetchBuffer::PrefetchAsyncCallback(const FSReadRequest& req,
void FilePrefetchBuffer::PrefetchAsyncCallback(FSReadRequest& req,
void* cb_arg) {
BufferInfo* buf = static_cast<BufferInfo*>(cb_arg);

2
file/file_prefetch_buffer.h
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@ -376,7 +376,7 @@ class FilePrefetchBuffer {
}
// Callback function passed to underlying FS in case of asynchronous reads.
void PrefetchAsyncCallback(const FSReadRequest& req, void* cb_arg);
void PrefetchAsyncCallback(FSReadRequest& req, void* cb_arg);
void TEST_GetBufferOffsetandSize(
std::vector<std::pair<uint64_t, size_t>>& buffer_info) {

4
file/random_access_file_reader.cc
View File

@ -486,7 +486,7 @@ IOStatus RandomAccessFileReader::PrepareIOOptions(const ReadOptions& ro,
IOStatus RandomAccessFileReader::ReadAsync(
FSReadRequest& req, const IOOptions& opts,
std::function<void(const FSReadRequest&, void*)> cb, void* cb_arg,
std::function<void(FSReadRequest&, void*)> cb, void* cb_arg,
void** io_handle, IOHandleDeleter* del_fn, AlignedBuf* aligned_buf) {
IOStatus s;
// Create a callback and populate info.
@ -557,7 +557,7 @@ IOStatus RandomAccessFileReader::ReadAsync(
return s;
}
void RandomAccessFileReader::ReadAsyncCallback(const FSReadRequest& req,
void RandomAccessFileReader::ReadAsyncCallback(FSReadRequest& req,
void* cb_arg) {
ReadAsyncInfo* read_async_info = static_cast<ReadAsyncInfo*>(cb_arg);
assert(read_async_info);

10
file/random_access_file_reader.h
View File

@ -91,8 +91,8 @@ class RandomAccessFileReader {
const bool is_last_level_;
struct ReadAsyncInfo {
ReadAsyncInfo(std::function<void(const FSReadRequest&, void*)> cb,
void* cb_arg, uint64_t start_time)
ReadAsyncInfo(std::function<void(FSReadRequest&, void*)> cb, void* cb_arg,
uint64_t start_time)
: cb_(cb),
cb_arg_(cb_arg),
start_time_(start_time),
@ -102,7 +102,7 @@ class RandomAccessFileReader {
user_len_(0),
is_aligned_(false) {}
std::function<void(const FSReadRequest&, void*)> cb_;
std::function<void(FSReadRequest&, void*)> cb_;
void* cb_arg_;
uint64_t start_time_;
FileOperationInfo::StartTimePoint fs_start_ts_;
@ -188,10 +188,10 @@ class RandomAccessFileReader {
IOStatus PrepareIOOptions(const ReadOptions& ro, IOOptions& opts) const;
IOStatus ReadAsync(FSReadRequest& req, const IOOptions& opts,
std::function<void(const FSReadRequest&, void*)> cb,
std::function<void(FSReadRequest&, void*)> cb,
void* cb_arg, void** io_handle, IOHandleDeleter* del_fn,
AlignedBuf* aligned_buf);
void ReadAsyncCallback(const FSReadRequest& req, void* cb_arg);
void ReadAsyncCallback(FSReadRequest& req, void* cb_arg);
};
} // namespace ROCKSDB_NAMESPACE

10
include/rocksdb/file_system.h
View File

@ -962,10 +962,10 @@ class FSRandomAccessFile {
// AbortIO API.
//
// Default implementation is to read the data synchronously.
virtual IOStatus ReadAsync(
FSReadRequest& req, const IOOptions& opts,
std::function<void(const FSReadRequest&, void*)> cb, void* cb_arg,
void** /*io_handle*/, IOHandleDeleter* /*del_fn*/, IODebugContext* dbg) {
virtual IOStatus ReadAsync(FSReadRequest& req, const IOOptions& opts,
std::function<void(FSReadRequest&, void*)> cb,
void* cb_arg, void** /*io_handle*/,
IOHandleDeleter* /*del_fn*/, IODebugContext* dbg) {
req.status =
Read(req.offset, req.len, opts, &(req.result), req.scratch, dbg);
cb(req, cb_arg);
@ -1687,7 +1687,7 @@ class FSRandomAccessFileWrapper : public FSRandomAccessFile {
return target_->InvalidateCache(offset, length);
}
IOStatus ReadAsync(FSReadRequest& req, const IOOptions& opts,
std::function<void(const FSReadRequest&, void*)> cb,
std::function<void(FSReadRequest&, void*)> cb,
void* cb_arg, void** io_handle, IOHandleDeleter* del_fn,
IODebugContext* dbg) override {
return target()->ReadAsync(req, opts, cb, cb_arg, io_handle, del_fn, dbg);

6
util/async_file_reader.cc
View File

@ -22,14 +22,12 @@ bool AsyncFileReader::MultiReadAsyncImpl(ReadAwaiter* awaiter) {
for (size_t i = 0; i < awaiter->num_reqs_; ++i) {
IOStatus s = awaiter->file_->ReadAsync(
awaiter->read_reqs_[i], awaiter->opts_,
[](const FSReadRequest& req, void* cb_arg) {
[](FSReadRequest& req, void* cb_arg) {
FSReadRequest* read_req = static_cast<FSReadRequest*>(cb_arg);
read_req->status = req.status;
read_req->result = req.result;
if (req.fs_scratch != nullptr) {
// TODO akanksha: Revisit to remove the const in the callback.
FSReadRequest& req_tmp = const_cast<FSReadRequest&>(req);
read_req->fs_scratch = std::move(req_tmp.fs_scratch);
read_req->fs_scratch = std::move(req.fs_scratch);
}
},
&awaiter->read_reqs_[i], &awaiter->io_handle_[i], &awaiter->del_fn_[i],

2
utilities/fault_injection_fs.cc
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@ -416,7 +416,7 @@ IOStatus TestFSRandomAccessFile::Read(uint64_t offset, size_t n,
IOStatus TestFSRandomAccessFile::ReadAsync(
FSReadRequest& req, const IOOptions& opts,
std::function<void(const FSReadRequest&, void*)> cb, void* cb_arg,
std::function<void(FSReadRequest&, void*)> cb, void* cb_arg,
void** io_handle, IOHandleDeleter* del_fn, IODebugContext* /*dbg*/) {
IOStatus ret;
IOStatus s;

2
utilities/fault_injection_fs.h
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@ -143,7 +143,7 @@ class TestFSRandomAccessFile : public FSRandomAccessFile {
Slice* result, char* scratch,
IODebugContext* dbg) const override;
IOStatus ReadAsync(FSReadRequest& req, const IOOptions& opts,
std::function<void(const FSReadRequest&, void*)> cb,
std::function<void(FSReadRequest&, void*)> cb,
void* cb_arg, void** io_handle, IOHandleDeleter* del_fn,
IODebugContext* dbg) override;
IOStatus MultiRead(FSReadRequest* reqs, size_t num_reqs,