4fc922b2c8
So far, the mqd_t type returned a pointer to an allocated area under the hood. The mutex and event objects attached to the message queue were implemented as inheritable types. As unfortunate side effect the HANDLEs to these objects were inherited by exec'd child processes, even though all other message queue properties are not inherted, per POSIX. Fix this by converting an mqd_t to a descriptor, and create a matching fhandler_mqueue object to handle various aspects of the message queues inside the fhandler. Especially, create the IPC objects as non-inheritable and duplicate the HANDLEs as part of the fixup_after_fork mechanism. Drop using mmap and create the memory map with NT functions. This allows to control duplication of handle and mapping in the forked child process, without the requirement to regenerate the map in the same spot. It also allows to dup() the descriptor, as on Linux, albeit this isn't implemented yet. This patch is the first cut. There's a bit more to do, like moving more functionality from the POSIX functions into the fhandler and making sure the mqd_t type can't be used in other descriptor-related functions willy-nilly. Signed-off-by: Corinna Vinschen <corinna@vinschen.de> |
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config | ||
etc | ||
include | ||
libgloss | ||
newlib | ||
texinfo | ||
winsup | ||
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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 | ||
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ltsugar.m4 | ||
ltversion.m4 | ||
lt~obsolete.m4 | ||
makefile.vms | ||
missing | ||
mkdep | ||
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move-if-change | ||
setup.com | ||
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ylwrap |
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.