On 08/06/2014 11:30 AM, Dr. David Alan Gilbert (git) wrote: > From: "Dr. David Alan Gilbert" <dgilb...@redhat.com> > > This is based on Stefan and Joel's patch that creates a QEMUFile that goes > to a memory buffer; from: > > http://lists.gnu.org/archive/html/qemu-devel/2013-03/msg05036.html > > Using the QEMUFile interface, this patch adds support functions for > operating on in-memory sized buffers that can be written to or read from. > > Signed-off-by: Stefan Berger <stef...@linux.vnet.ibm.com> > Signed-off-by: Joel Schopp <jsch...@linux.vnet.ibm.com> > > For minor tweeks/rebase I've done to it: > Signed-off-by: Dr. David Alan Gilbert <dgilb...@redhat.com> > --- > include/migration/qemu-file.h | 28 +++ > include/qemu/typedefs.h | 1 + > qemu-file.c | 410 > ++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 439 insertions(+)
> +/** > + * Set the length of the buffer; the primary usage of this > + * function is to truncate the number of used bytes in the buffer. > + * The size will not be extended beyond the current number of > + * allocated bytes in the QEMUSizedBuffer. > + * > + * @qsb: A QEMUSizedBuffer > + * @new_len : The new length of bytes in the buffer No space before : > +/* > + * Convert the QEMUSizedBuffer into a flat buffer. > + * > + * Note: If at all possible, try to avoid this function since it > + * may unnecessarily copy memory around. > + * > + * @qsb: pointer to QEMUSizedBuffer > + * @start : offset to start at and again > + * @count: number of bytes to copy > + * @buf: a pointer to an optional buffer to write into; the pointer may > + * point to NULL in which case the buffer will be allocated; > + * if buffer is provided, it must be large enough to hold @count bytes > + * > + * Returns the number of bytes copied into the output buffer spurious double space -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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