mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-19 14:11:58 +00:00
d36f52502e
It's still hackish and dirty, but server and client compies. Server starts, but throwes meaningless exception on any query. Client seems to be working fine. Linux compilation might (but shouldn't) be broken (not tested).
83 lines
1.6 KiB
C++
83 lines
1.6 KiB
C++
#include <fcntl.h>
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#include <DB/IO/ReadBufferFromFile.h>
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#include <DB/IO/WriteHelpers.h>
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#include <DB/Common/ProfileEvents.h>
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namespace ProfileEvents
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{
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extern const Event FileOpen;
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}
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int FILE_DOESNT_EXIST;
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extern const int CANNOT_OPEN_FILE;
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extern const int CANNOT_CLOSE_FILE;
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}
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ReadBufferFromFile::ReadBufferFromFile(
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const std::string & file_name_,
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size_t buf_size,
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int flags,
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char * existing_memory,
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size_t alignment)
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: ReadBufferFromFileDescriptor(-1, buf_size, existing_memory, alignment), file_name(file_name_)
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{
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ProfileEvents::increment(ProfileEvents::FileOpen);
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#ifdef __APPLE__
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bool o_direct = (flags != -1) && (flags & O_DIRECT);
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if (o_direct) {
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flags = flags & ~O_DIRECT;
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}
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#endif
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fd = open(file_name.c_str(), flags == -1 ? O_RDONLY : flags);
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if (-1 == fd)
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throwFromErrno("Cannot open file " + file_name, errno == ENOENT ? ErrorCodes::FILE_DOESNT_EXIST : ErrorCodes::CANNOT_OPEN_FILE);
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#ifdef __APPLE__
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if (o_direct)
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if (fcntl(fd, F_NOCACHE, 1) == -1)
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throwFromErrno("Cannot set F_NOCACHE on file " + file_name, ErrorCodes::CANNOT_OPEN_FILE);
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#endif
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}
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ReadBufferFromFile::ReadBufferFromFile(
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int fd,
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size_t buf_size,
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int flags,
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char * existing_memory,
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size_t alignment)
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: ReadBufferFromFileDescriptor(fd, buf_size, existing_memory, alignment), file_name("(fd = " + toString(fd) + ")")
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{
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}
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ReadBufferFromFile::~ReadBufferFromFile()
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{
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if (fd < 0)
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return;
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::close(fd);
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}
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void ReadBufferFromFile::close()
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{
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if (0 != ::close(fd))
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throw Exception("Cannot close file", ErrorCodes::CANNOT_CLOSE_FILE);
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fd = -1;
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metric_increment.destroy();
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}
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}
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