301454f132
According to Posix, a FIFO open for reading is at EOF if it is empty and there are no writers open. The only way to test this is to poll the fifo_client_handlers as in raw_read and select.cc:peek_fifo. The current hit_eof instead relies on the value of nconnected, which can be out of date. On the one hand, it doesn't take into account writers that were connected but have since closed. On the other hand, it doesn't take into account writers that are in the process of opening but haven't yet connected. Fix this by introducing a maybe_eof method that tentatively assumes EOF if there are no connected writers after polling. Then check for writers currently opening (via a new 'writer_opening' event), and wait for the fifo_reader_thread to record any new connection that was made while we were polling. To handle the needs of peek_fifo, replace the get_fc_handle method by a get_fc_handler method, and add a fifo_client_handler::get_state method. Remove the is_connected method, which was used only in peek_fifo and is no longer needed. Remove the nconnected data member, which was used only for the flawed hit_eof. Add some comments about events to fhandler.h. |
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| etc | ||
| include | ||
| libgloss | ||
| newlib | ||
| texinfo | ||
| winsup | ||
| .drone.yml | ||
| .gitattributes | ||
| .gitignore | ||
| COPYING | ||
| COPYING.LIB | ||
| COPYING.LIBGLOSS | ||
| COPYING.NEWLIB | ||
| COPYING3 | ||
| COPYING3.LIB | ||
| ChangeLog | ||
| MAINTAINERS | ||
| Makefile.def | ||
| Makefile.in | ||
| Makefile.tpl | ||
| README | ||
| README-maintainer-mode | ||
| compile | ||
| config-ml.in | ||
| config.guess | ||
| config.rpath | ||
| config.sub | ||
| configure | ||
| configure.ac | ||
| depcomp | ||
| djunpack.bat | ||
| install-sh | ||
| libtool.m4 | ||
| ltgcc.m4 | ||
| ltmain.sh | ||
| ltoptions.m4 | ||
| ltsugar.m4 | ||
| ltversion.m4 | ||
| lt~obsolete.m4 | ||
| makefile.vms | ||
| missing | ||
| mkdep | ||
| mkinstalldirs | ||
| move-if-change | ||
| setup.com | ||
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README
README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.