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Daniel P. Berrange
34d22c1ed5
Avoid polling on FDs with no events enabled
If a file descriptor with events=0 was added to the libvirtd event loop, it would still be added to the poll() fds' array. While it wouldn't see any POLLIN/OUT events, it'd still get triggered for HANGUP/ERROR events which was not in compliance with the libvirt events API contract. * qemud/event.c: Don't poll on FDs with events=0 * tests/eventtest.c: Add test case to validate fix to event.c
LibVirt : simple API for virtualization Libvirt is a C toolkit to interact with the virtualization capabilities of recent versions of Linux (and other OSes). It is free software available under the GNU Lesser General Public License. Virtualization of the Linux Operating System means the ability to run multiple instances of Operating Systems concurrently on a single hardware system where the basic resources are driven by a Linux instance. The library aim at providing long term stable C API initially for the Xen paravirtualization but should be able to integrate other virtualization mechanisms if needed. Daniel Veillard <veillard@redhat.com>
Description
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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