Izumi Tsutsui 79761c6681 semaphore: fix a hangup problem under load on NetBSD hosts. ...

Fix following bugs in "fallback implementation of counting semaphores
with mutex+condvar" added in c166cb72f1676855816340666c3b618beef4b976:
 - waiting threads are not restarted properly if more than one threads
   are waiting unblock signals in qemu_sem_timedwait()
 - possible missing pthread_cond_signal(3) calls when waiting threads
   are returned by ETIMEDOUT
 - fix an uninitialized variable
The problem is analyzed by and fix is provided by Noriyuki Soda.

Also put additional cleanup suggested by Laszlo Ersek:
 - make QemuSemaphore.count unsigned (it won't be negative)
 - check a return value of in pthread_cond_wait() in qemu_sem_wait()

Signed-off-by: Izumi Tsutsui <tsutsui@ceres.dti.ne.jp>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-id: 1372841894-10634-1-git-send-email-tsutsui@ceres.dti.ne.jp
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

2013-08-05 11:48:00 -05:00

..

acl.h

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

aes.h

aes: make Td[0-5] and Te[0-5] tables non static

2013-04-13 13:51:57 +02:00

atomic.h

add a header file for atomic operations

2013-07-04 17:42:49 +02:00

bitmap.h

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

bitops.h

bitops: Provide sextract32() and sextract64()

2013-07-22 15:41:11 -05:00

bswap.h

bswap: fix compiler warning

2013-04-19 11:28:22 +02:00

cache-utils.h

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

compatfd.h

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

compiler.h

audio: Replace static functions in header file by macros, remove GCC_ATTR

2013-06-21 22:52:50 +04:00

config-file.h

remove some double-includes

2013-05-18 16:35:12 +04:00

crc32c.h

qemu: add castagnoli crc32c checksum algorithm

2013-05-03 10:31:58 +02:00

envlist.h

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

error-report.h

add timestamp to error_report()

2013-07-10 13:42:09 -04:00

event_notifier.h

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

fifo8.h

hw: move fifo.[ch] to libqemuutil

2013-03-01 13:53:10 +01:00

hbitmap.h

hbitmap: Use non-bitops ctzl

2013-02-16 11:11:34 +00:00

host-utils.h

host-utils: Use __int128_t for mul[us]64

2013-02-17 14:28:57 +00:00

int128.h

int128: optimize and add test cases

2013-07-02 08:17:01 +02:00

iov.h

iov: add iov_discard_front/back() to remove data

2013-01-02 15:58:05 +01:00

log.h

log: Change log_cpu_state[_mask]() argument to CPUState

2013-07-09 21:33:04 +02:00

main-loop.h

main-loop: add qemu_get_aio_context()

2013-03-15 16:07:50 +01:00

module.h

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

notify.h

notify: add NotiferWithReturn so notifier list can abort

2013-06-28 09:20:26 +02:00

option_int.h

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

option.h

qdev: Add SIZE type to qdev properties

2013-07-29 19:33:33 -05:00

osdep.h

osdep: add qemu_get_local_state_pathname()

2013-05-30 11:37:37 -05:00

queue.h

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

range.h

range: add Range structure

2013-07-04 10:40:56 +03:00

ratelimit.h

stream: fix ratelimit_set_speed

2012-11-30 11:33:24 +01:00

sockets.h

oslib-posix: rename socket_set_nonblock() to qemu_set_nonblock()

2013-04-02 11:47:37 -04:00

thread-posix.h

semaphore: fix a hangup problem under load on NetBSD hosts.

2013-08-05 11:48:00 -05:00

thread-win32.h

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

thread.h

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

timer.h

Remove unnecessary FreeBSD #include

2013-04-25 14:45:46 -05:00

tls.h

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

typedefs.h

pci: store PCI hole ranges in guestinfo structure

2013-07-04 10:40:56 +03:00

uri.h

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

xattr.h

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00