xemu/util
Paolo Bonzini a7b91d35ba coroutine-lock: make CoRwlock thread-safe and fair
This adds a CoMutex around the existing CoQueue.  Because the write-side
can just take CoMutex, the old "writer" field is not necessary anymore.
Instead of removing it altogether, count the number of pending writers
during a read-side critical section and forbid further readers from
entering.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 20170213181244.16297-7-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-02-21 11:39:40 +00:00
..
acl.c Drop Emacs local variables lists redundant with .dir-locals.el 2016-07-12 16:19:16 +02:00
aio-posix.c async: remove unnecessary inc/dec pairs 2017-02-21 11:39:40 +00:00
aio-win32.c async: remove unnecessary inc/dec pairs 2017-02-21 11:39:40 +00:00
aiocb.c block: move AioContext, QEMUTimer, main-loop to libqemuutil 2017-02-21 11:14:07 +00:00
async.c async: remove unnecessary inc/dec pairs 2017-02-21 11:39:40 +00:00
base64.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
bitmap.c bitmap: assert that start and nr are non negative 2017-01-20 13:22:17 +01:00
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
bufferiszero.c cutils: Rewrite x86 buffer zero checking 2016-09-14 12:25:14 +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 coroutine-sigaltstack: use helper for allocating stack memory 2016-09-29 14:13:39 +02:00
coroutine-ucontext.c coroutine-ucontext: use helper for allocating stack memory 2016-09-29 14:13:39 +02:00
coroutine-win32.c coroutine: add a macro for the coroutine stack size 2016-09-29 14:13:39 +02:00
crc32c.c util: Clean up includes 2016-02-04 17:01:04 +00:00
cutils.c cutils: Move buffer_is_zero and subroutines to a new file 2016-09-13 19:09:45 +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: cleanups around event_notifier_set_handler 2017-01-16 17:52:35 +01:00
event_notifier-win32.c event_notifier: cleanups around event_notifier_set_handler 2017-01-16 17:52:35 +01:00
fifo8.c migration: consolidate VMStateField.start 2017-02-13 17:27:13 +00:00
getauxval.c util: Clean up includes 2016-02-04 17:01:04 +00:00
hbitmap.c hbitmap: Add hbitmap_is_serializable() 2017-01-26 10:25:01 +08:00
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 host-utils: Implement unsigned quadword left/right shift and unit tests 2017-01-31 10:10:14 +11:00
id.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
iohandler.c block: move AioContext, QEMUTimer, main-loop to libqemuutil 2017-02-21 11:14:07 +00:00
iov.c util: Fix assertion in iov_copy() upon zero 'bytes' and non-zero 'offset' 2016-08-03 18:44:57 +02:00
lockcnt.c qemu-thread: optimize QemuLockCnt with futexes on Linux 2017-01-16 13:25:18 +00:00
log.c log: fix parsing of multiple trace:PATTERN log args 2016-09-14 22:52:44 +02:00
main-loop.c block: move AioContext, QEMUTimer, main-loop to libqemuutil 2017-02-21 11:14:07 +00:00
Makefile.objs block: move AioContext, QEMUTimer, main-loop to libqemuutil 2017-02-21 11:14:07 +00:00
memfd.c os-posix: include sys/mman.h 2016-06-16 18:39:03 +02:00
mmap-alloc.c util/mmap-alloc: refactor a little bit for readability 2017-01-24 23:26:53 +03:00
module.c module: Don't load the same module if requested multiple times 2016-10-07 14:14:06 +02:00
notify.c util: Clean up includes 2016-02-04 17:01:04 +00:00
osdep.c osdep: Introduce qemu_dup 2016-07-13 13:26:02 +02:00
oslib-posix.c Fix FreeBSD (10.x) build after 7dc9ae43 2016-11-22 10:56:01 +00:00
oslib-win32.c win32: use glib gpoll if glib >= 2.50 2017-01-24 23:26:53 +03:00
path.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
qdist.c qdist: return "(empty)" instead of NULL when printing an empty dist 2016-08-03 18:44:56 +02:00
qemu-config.c block: Add bdrv_runtime_opts to query-command-line-options 2016-10-07 13:34:07 +02:00
qemu-coroutine-io.c coroutine: move entry argument to qemu_coroutine_create 2016-07-13 13:26:02 +02:00
qemu-coroutine-lock.c coroutine-lock: make CoRwlock thread-safe and fair 2017-02-21 11:39:40 +00:00
qemu-coroutine-sleep.c block: explicitly acquire aiocontext in timers that need it 2017-02-21 11:14:08 +00:00
qemu-coroutine.c coroutine-lock: add limited spinning to CoMutex 2017-02-21 11:39:40 +00:00
qemu-error.c qemu-error: remove dependency of stubs on monitor 2016-11-01 16:06:57 +01:00
qemu-openpty.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qemu-option.c util: add iterators for QemuOpts values 2017-02-09 17:28:49 +01:00
qemu-progress.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qemu-sockets.c io: introduce a DNS resolver API 2017-01-23 15:32:46 +00:00
qemu-thread-posix.c * QOM interface fix (Eduardo) 2017-01-20 16:42:07 +00:00
qemu-thread-win32.c * QOM interface fix (Eduardo) 2017-01-20 16:42:07 +00:00
qemu-timer-common.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qemu-timer.c block: move AioContext, QEMUTimer, main-loop to libqemuutil 2017-02-21 11:14:07 +00:00
qht.c qht: fix unlock-after-free segfault upon resizing 2016-10-06 18:04:13 +02:00
range.c range: Replace internal representation of Range 2016-07-04 16:49:33 +03:00
rcu.c rcu: simplify memory barriers 2016-10-24 11:30:56 +02:00
readline.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
thread-pool.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
throttle.c throttle: Don't allow burst limits to be lower than the normal limits 2016-08-05 09:59:06 +01:00
timed-average.c Fix some typos found by codespell 2016-05-18 15:04:27 +03:00
trace-events coroutine-lock: make CoMutex thread-safe 2017-02-21 11:39:40 +00:00
unicode.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
uri.c Fix documentation and some comments (article, grammar) 2017-01-24 23:26:52 +03:00
uuid.c uuid: Tighten uuid parse 2016-09-23 11:42:52 +08:00