Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
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Daniel P. Berrangé e6afacb0fe qemu: start/stop an event loop thread for domains
The event loop thread will be responsible for handling
any per-domain I/O operations, most notably the QEMU
monitor and agent sockets.

We start this event loop when launching QEMU, but stopping
the event loop is a little more complicated. The obvious
idea is to stop it in qemuProcessStop(), but if we do that
we risk loosing the final events from the QEMU monitor, as
they might not have been read by the event thread at the
time we tell the thread to stop.

The solution is to delay shutdown of the event thread until
we have seen EOF from the QEMU monitor, and thus we know
there are no further events to process.

Note that this assumes that we don't have events to process
from the QEMU agent.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-03-11 14:44:44 +00:00
.ctags.d maint: Add support for .ctags.d 2019-05-31 17:54:28 +02:00
build-aux virclosecallbacks: move to src/hypervisor 2020-02-24 16:47:21 +01:00
ci ci: Drop handling of $PKG_CONFIG_LIBDIR 2020-03-04 11:24:10 +01:00
docs docs: add page describing the libvirt daemons 2020-03-05 15:40:01 +00:00
examples qemu: support Panic Crashloaded event handling 2020-02-07 14:05:25 +00:00
include/libvirt qemu: support Panic Crashloaded event handling 2020-02-07 14:05:25 +00:00
m4 m4: libxl: properly fail when libxl is required 2020-02-20 22:30:45 +01:00
po src: introduce an abstraction for running event loops 2020-03-11 14:44:04 +00:00
scripts virerror: Make it easier to add new error number 2020-01-10 13:53:32 +01:00
src qemu: start/stop an event loop thread for domains 2020-03-11 14:44:44 +00:00
tests cputest: Add data for Intel(R) Core(TM) i7-8550U CPU without TSX 2020-03-09 16:17:34 +01:00
tools cmdDomHostname: Fix uninitialized use of 'hostname' by refactoring cleanup 2020-03-05 16:21:47 +01:00
.color_coded.in gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
.ctags ctags: Generate tags for headers, i.e. function prototypes 2018-09-18 14:21:33 +02:00
.dir-locals.el build: avoid tabs that failed syntax-check 2012-09-06 09:43:46 -06:00
.editorconfig Add .editorconfig 2019-09-06 12:47:46 +02:00
.gitignore gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
.gitlab-ci.yml gitlab: Move mips job to Debian 9 2019-12-13 13:12:13 +01:00
.gitmodules gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
.gitpublish gitpublish: add a subject prefix 2020-01-16 13:04:11 +00:00
.mailmap mailmap: Remove some duplicates 2019-06-07 13:18:08 +02:00
.travis.yml travis: Use dedicated images for MinGW builds 2020-02-24 13:41:58 +01:00
.ycm_extra_conf.py.in gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
ABOUT-NLS po: provide custom make rules for po file management 2018-04-19 10:35:58 +01:00
AUTHORS.in AUTHORS: Add Fabiano Fidêncio 2019-12-19 16:42:06 +01:00
autogen.sh build: stop running aclocal manually 2020-02-25 09:22:56 +00:00
ChangeLog maint: Stop generating ChangeLog from git 2019-04-03 09:45:25 +02:00
config-post.h gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
configure.ac maint: Post-release version bump to 6.2.0 2020-03-04 10:32:58 +01:00
COPYING maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
COPYING.LESSER maint: Remove control characters from LGPL license file 2015-09-25 09:16:24 +02:00
gitdm.config gitdm: add 'ibm' file 2019-10-18 17:32:52 +02:00
GNUmakefile build: merge all syntax-check logic into one file 2019-10-09 13:36:54 +01:00
libvirt-admin.pc.in Add libvirt-admin library 2015-06-16 13:46:20 +02:00
libvirt-lxc.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt-qemu.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt.spec.in gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
Makefile.am gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
Makefile.nonreentrant Remove backslash alignment attempts 2017-11-03 13:24:12 +01:00
mingw-libvirt.spec.in Remove phyp driver 2019-12-20 12:25:42 -05:00
README Provide a useful README file 2017-05-22 17:01:37 +01:00
README-hacking gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
README.md build: mandate use of a build dir != src dir 2019-11-08 17:07:35 +01:00
run.in run.in: Include tools directory on $PATH. 2020-01-21 13:04:57 +01:00

Build Status CII Best Practices

Libvirt API for virtualization

Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.

For some of these hypervisors, it provides a stateful management daemon which runs on the virtualization host allowing access to the API both by non-privileged local users and remote users.

Layered packages provide bindings of the libvirt C API into other languages including Python, Perl, PHP, Go, Java, OCaml, as well as mappings into object systems such as GObject, CIM and SNMP.

Further information about the libvirt project can be found on the website:

https://libvirt.org

License

The libvirt C API is distributed under the terms of GNU Lesser General Public License, version 2.1 (or later). Some parts of the code that are not part of the C library may have the more restrictive GNU General Public License, version 2.0 (or later). See the files COPYING.LESSER and COPYING for full license terms & conditions.

Installation

Libvirt uses the GNU Autotools build system, so in general can be built and installed with the usual commands, however, we mandate to have the build directory different than the source directory. For example, to build in a manner that is suitable for installing as root, use:

$ mkdir build && cd build
$ ../configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var
$ make
$ sudo make install

While to build & install as an unprivileged user

$ mkdir build && cd build
$ ../configure --prefix=$HOME/usr
$ make
$ make install

The libvirt code relies on a large number of 3rd party libraries. These will be detected during execution of the configure script and a summary printed which lists any missing (optional) dependencies.

Contributing

The libvirt project welcomes contributions in many ways. For most components the best way to contribute is to send patches to the primary development mailing list. Further guidance on this can be found on the website:

https://libvirt.org/contribute.html

Contact

The libvirt project has two primary mailing lists:

Further details on contacting the project are available on the website:

https://libvirt.org/contact.html