mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-18 20:32:43 +00:00
113 lines
2.7 KiB
C++
113 lines
2.7 KiB
C++
#include <fcntl.h>
|
|
|
|
#include <IO/AsynchronousReadBufferFromFile.h>
|
|
#include <IO/WriteHelpers.h>
|
|
#include <Common/ProfileEvents.h>
|
|
#include <base/defines.h>
|
|
#include <cerrno>
|
|
|
|
|
|
namespace ProfileEvents
|
|
{
|
|
extern const Event FileOpen;
|
|
}
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
namespace ErrorCodes
|
|
{
|
|
extern const int FILE_DOESNT_EXIST;
|
|
extern const int CANNOT_OPEN_FILE;
|
|
extern const int CANNOT_CLOSE_FILE;
|
|
}
|
|
|
|
|
|
AsynchronousReadBufferFromFile::AsynchronousReadBufferFromFile(
|
|
IAsynchronousReader & reader_,
|
|
Priority priority_,
|
|
const std::string & file_name_,
|
|
size_t buf_size,
|
|
int flags,
|
|
char * existing_memory,
|
|
size_t alignment,
|
|
std::optional<size_t> file_size_)
|
|
: AsynchronousReadBufferFromFileDescriptor(reader_, priority_, -1, buf_size, existing_memory, alignment, file_size_)
|
|
, file_name(file_name_)
|
|
{
|
|
ProfileEvents::increment(ProfileEvents::FileOpen);
|
|
|
|
#ifdef OS_DARWIN
|
|
bool o_direct = (flags != -1) && (flags & O_DIRECT);
|
|
if (o_direct)
|
|
flags = flags & ~O_DIRECT;
|
|
#endif
|
|
fd = ::open(file_name.c_str(), flags == -1 ? O_RDONLY | O_CLOEXEC : flags | O_CLOEXEC);
|
|
|
|
if (-1 == fd)
|
|
ErrnoException::throwFromPath(
|
|
errno == ENOENT ? ErrorCodes::FILE_DOESNT_EXIST : ErrorCodes::CANNOT_OPEN_FILE, file_name, "Cannot open file {}", file_name);
|
|
#ifdef OS_DARWIN
|
|
if (o_direct)
|
|
{
|
|
if (fcntl(fd, F_NOCACHE, 1) == -1)
|
|
ErrnoException::throwFromPath(ErrorCodes::CANNOT_OPEN_FILE, file_name, "Cannot set F_NOCACHE on file {}", file_name);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
AsynchronousReadBufferFromFile::AsynchronousReadBufferFromFile(
|
|
IAsynchronousReader & reader_,
|
|
Priority priority_,
|
|
int & fd_,
|
|
const std::string & original_file_name,
|
|
size_t buf_size,
|
|
char * existing_memory,
|
|
size_t alignment,
|
|
std::optional<size_t> file_size_)
|
|
: AsynchronousReadBufferFromFileDescriptor(reader_, priority_, fd_, buf_size, existing_memory, alignment, file_size_)
|
|
, file_name(original_file_name.empty() ? "(fd = " + toString(fd_) + ")" : original_file_name)
|
|
{
|
|
fd_ = -1;
|
|
}
|
|
|
|
|
|
AsynchronousReadBufferFromFile::~AsynchronousReadBufferFromFile()
|
|
{
|
|
/// Must wait for events in flight before closing the file.
|
|
finalize();
|
|
|
|
if (fd < 0)
|
|
return;
|
|
|
|
[[maybe_unused]] int err = ::close(fd);
|
|
chassert(!err || errno == EINTR);
|
|
}
|
|
|
|
|
|
void AsynchronousReadBufferFromFile::close()
|
|
{
|
|
if (fd < 0)
|
|
return;
|
|
|
|
if (0 != ::close(fd))
|
|
{
|
|
fd = -1;
|
|
throw Exception(ErrorCodes::CANNOT_CLOSE_FILE, "Cannot close file");
|
|
}
|
|
|
|
fd = -1;
|
|
}
|
|
|
|
|
|
AsynchronousReadBufferFromFileWithDescriptorsCache::~AsynchronousReadBufferFromFileWithDescriptorsCache()
|
|
{
|
|
/// Must wait for events in flight before potentially closing the file by destroying OpenedFilePtr.
|
|
finalize();
|
|
}
|
|
|
|
|
|
}
|