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6dd726a2bf
qemu/util
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Markus Armbruster 6dd726a2bf range: Replace internal representation of Range 
Range represents a range as follows.  Member @start is the inclusive
lower bound, member @end is the exclusive upper bound.  Zero @end is
special: if @start is also zero, the range is empty, else @end is to
be interpreted as 2^64.  No other empty ranges may occur.

The range [0,2^64-1] cannot be represented.  If you try to create it
with range_set_bounds1(), you get the empty range instead.  If you try
to create it with range_set_bounds() or range_extend(), assertions
fail.  Before range_set_bounds() existed, the open-coded creation
usually got you the empty range instead.  Open deathtrap.

Moreover, the code dealing with the janus-faced @end is too clever by
half.

Dumb this down to a more pedestrian representation: members @lob and
@upb are inclusive lower and upper bounds.  The empty range is encoded
as @lob = 1, @upb = 0.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-07-04 16:49:33 +03:00
..
acl.c util: Clean up includes 2016-02-04 17:01:04 +00:00
base64.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
bitmap.c util: Clean up includes 2016-02-04 17:01:04 +00:00
bitops.c util: Clean up includes 2016-02-04 17:01:04 +00:00
buffer.c qemu-common: stop including qemu/host-utils.h from qemu-common.h 2016-05-19 16:42:28 +02:00
compatfd.c util: Clean up includes 2016-02-04 17:01:04 +00:00
coroutine-gthread.c all: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
coroutine-sigaltstack.c Remove unneeded include statements for setjmp.h 2016-03-22 19:11:15 +01:00
coroutine-ucontext.c Remove unneeded include statements for setjmp.h 2016-03-22 19:11:15 +01:00
coroutine-win32.c util: Clean up includes 2016-02-04 17:01:04 +00:00
crc32c.c util: Clean up includes 2016-02-04 17:01:04 +00:00
cutils.c avx2 configure: Use primitives in test 2016-06-16 18:39:04 +02:00
envlist.c util: Clean up includes 2016-02-04 17:01:04 +00:00
error.c migration: add reporting of errors for outgoing migration 2016-05-26 11:31:30 +05:30
event_notifier-posix.c event-notifier: Add "is_external" parameter 2016-04-22 16:43:56 +02:00
event_notifier-win32.c event-notifier: Add "is_external" parameter 2016-04-22 16:43:56 +02:00
fifo8.c util: Clean up includes 2016-02-04 17:01:04 +00:00
getauxval.c util: Clean up includes 2016-02-04 17:01:04 +00:00
hbitmap.c hbitmap: add 'pos < size' asserts 2016-06-16 15:20:37 +02:00
hexdump.c util: Improved qemu_hexmap() to include an ascii dump of the buffer 2016-04-06 09:52:07 +08:00
host-utils.c util: Clean up includes 2016-02-04 17:01:04 +00:00
id.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
iov.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
log.c range: Eliminate direct Range member access 2016-07-04 16:49:33 +03:00
Makefile.objs range: Create range.c for code that should not be inline 2016-06-30 15:28:40 +02:00
memfd.c os-posix: include sys/mman.h 2016-06-16 18:39:03 +02:00
mmap-alloc.c os-posix: include sys/mman.h 2016-06-16 18:39:03 +02:00
module.c coccinelle: Remove unnecessary variables for function return value 2016-06-20 16:38:13 +02:00
notify.c util: Clean up includes 2016-02-04 17:01:04 +00:00
osdep.c os-posix: include sys/mman.h 2016-06-16 18:39:03 +02:00
oslib-posix.c os-posix: include sys/mman.h 2016-06-16 18:39:03 +02:00
oslib-win32.c all: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
path.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
qdist.c clean-includes: run it once more 2016-06-16 18:39:03 +02:00
qemu-config.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qemu-coroutine-io.c osdep: remove use of socket_error() from all code 2016-03-10 17:19:34 +00:00
qemu-coroutine-lock.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qemu-coroutine-sleep.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qemu-coroutine.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qemu-error.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qemu-openpty.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qemu-option.c QemuOpts: Fix qemu_opts_foreach() dangling location regression 2016-04-28 08:18:56 +02:00
qemu-progress.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qemu-sockets.c * serial port fixes (Paolo) 2016-06-29 19:14:48 +01:00
qemu-thread-posix.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qemu-thread-win32.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qemu-timer-common.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qht.c clean-includes: run it once more 2016-06-16 18:39:03 +02:00
range.c range: Replace internal representation of Range 2016-07-04 16:49:33 +03:00
rcu.c util: Clean up includes 2016-02-04 17:01:04 +00:00
readline.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
rfifolock.c rfifolock: no need to get thread identifier when nesting 2016-05-16 15:29:44 -07:00
throttle.c throttle: refuse iops-size without iops-total/read/write 2016-06-07 14:40:51 +01:00
timed-average.c Fix some typos found by codespell 2016-05-18 15:04:27 +03:00
trace-events trace: split out trace events for util/ directory 2016-06-20 17:22:14 +01:00
unicode.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
uri.c all: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00