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* buffer: allow a buffer to shrink gracefullyPeter Lieven2015-11-051-8/+33
| | | | | | | | | | | the idea behind this patch is to allow the buffer to shrink, but make this a seldom operation. The buffers average size is measured exponentionally smoothed with am alpha of 1/128. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1446203414-4013-20-git-send-email-kraxel@redhat.com
* buffer: factor out buffer_adj_sizePeter Lieven2015-11-051-15/+10
| | | | | | | Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1446203414-4013-19-git-send-email-kraxel@redhat.com
* buffer: factor out buffer_req_sizePeter Lieven2015-11-051-2/+8
| | | | | | | Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1446203414-4013-18-git-send-email-kraxel@redhat.com
* buffer: add tracingGerd Hoffmann2015-11-051-0/+18
| | | | | | | Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Peter Lieven <pl@kamp.de> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1446203414-4013-7-git-send-email-kraxel@redhat.com
* buffer: add buffer_shrinkGerd Hoffmann2015-11-051-1/+19
| | | | | | | Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Peter Lieven <pl@kamp.de> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1446203414-4013-6-git-send-email-kraxel@redhat.com
* buffer: add buffer_moveGerd Hoffmann2015-11-051-0/+16
| | | | | | | Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Peter Lieven <pl@kamp.de> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1446203414-4013-5-git-send-email-kraxel@redhat.com
* buffer: add buffer_move_emptyGerd Hoffmann2015-11-051-0/+14
| | | | | | | Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Peter Lieven <pl@kamp.de> Reviewed-by: Daniel Berrange <berrange@redhat.com> Message-id: 1446203414-4013-4-git-send-email-kraxel@redhat.com
* buffer: add buffer_initGerd Hoffmann2015-11-051-0/+11
| | | | | | | Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Peter Lieven <pl@kamp.de> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1446203414-4013-3-git-send-email-kraxel@redhat.com
* buffer: make the Buffer capacity increase in powers of twoPeter Lieven2015-11-051-1/+4
| | | | | | | | | | | | | This makes sure the number of reallocs is in O(log N). Signed-off-by: Peter Lieven <pl@kamp.de> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 1446203414-4013-2-git-send-email-kraxel@redhat.com [ rebased to util/buffer.c ] Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* util: pull Buffer code out of VNC moduleDaniel P. Berrange2015-10-201-0/+65
The Buffer code in the VNC server is useful for the IO channel code, so pull it out into a shared module, QIOBuffer. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
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