mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-02-21 00:07:36 +08:00
d9918451e2
This is in a new shared memory section. We will use it for temporary storage of the owner's fc_handler list when we need to change owner. The new owner can then duplicate the pipe handles from that list before taking ownership. Add several shared data members and methods that are needed for the duplication process Add methods update_my_handlers and update_shared_handlers that carry out the duplication. Allow the shared list to grow dynamically, up to a point. Do this by initially reserving a block of memory (currently 100 pages) and only committing pages as needed. Add methods create_shared_fc_handler, reopen_shared_fc_handler, and remap_shared_fc_handler to create the new shared memory section, reopen it, and commit new pages. The first is called in open, the second is called in dup/fork/exec, and the third is called in update_shared_handlers if more shared memory is needed. Modify the fifo_reader_thread function to call update_my_handlers when it finds that there is no owner. Also make it call update_shared_handlers when the owner's thread terminates, so that the new owner will have an accurate shared fc_handler list from which to duplicate. For convenience, add new methods cleanup_handlers and close_all_handlers. And add an optional arg to add_client_handler that allows it to create a new fifo_client_handler without creating a new pipe instance.
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.