* Added a new type of Exception
for better recognition of connection failures
* Added more logging for mysql communication
* Retries on connection loss during query.
Make MySQL dictionary source resilient to unexpected loss of connection
during querying MySQL. This behavior is controlled with
".fail_on_connection_loss" config parameter, which defaults to false.
* Stripped some debugging leftover garbage
* Minor followup corrections
* Corrections after PR comments
* Yet more fixes
If the order of <common/defines.h> and c++ header will be wrong the
compilation will be broken.
v2: rename __ch_has_feature to ch_has_feature to fix -Wreserved-id-macro
v3: do not fallback to 0
__has_feature supported only by clang.
But libcxx/libcxxabi overrides it to 0:
$ fgrep -r 'define __has_feature' contrib/libcxx*
contrib/libcxx/include/__config:#define __has_feature(__x) 0
contrib/libcxxabi/src/demangle/DemangleConfig.h:#define __has_feature(x) 0
Thus the checks for __has_feature will be wrong, undefine it again to
avoid such issues.
This will also fix building with sanitizers under gcc (before this patch
BOOST_USE_UCONTEXT wasn't set for sanitizers).
Use PIPE_BUF over some magic number 1024 in terminate_handler, since
according to pipe(7):
PIPE_BUF
POSIX.1 says that write(2)s of less than PIPE_BUF bytes must be atomic
Also note that 1024, is too small, especially for C++ stacktraces (and
especially for debug builds, that contains lots of non-inlined helpers
for various ptrs).
* Refactoring: part 1
* Refactoring: part 2
* Handle request using ReadBuffer interface
* Struggles with ReadBuffer's
* Fix URI parsing
* Implement parsing of multipart/form-data
* Check HTTP_LENGTH_REQUIRED before eof() or will hang
* Fix HTTPChunkedReadBuffer
* Fix build and style
* Fix test
* Resist double-eof
* Fix arcadian build
