Izumi Tsutsui d55fc47517 semaphore: fix a hangup problem under load on NetBSD hosts. ...

Fix following bugs in "fallback implementation of counting semaphores
with mutex+condvar" added in c166cb72f1:
 - 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>
(cherry picked from commit 79761c6681)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

2013-08-13 09:30:50 -05:00

..

acl.c

acl: acl_add can't insert before last list element, fix

2013-08-12 15:14:38 -05:00

aes.c

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

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

bitmap.c

…

bitops.c

bitops: unroll while loop in find_next_bit()

2013-03-26 13:32:32 +01:00

cache-utils.c

…

compatfd.c

…

crc32c.c

qemu: add castagnoli crc32c checksum algorithm

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

cutils.c

ccid-card-passthru, dev-smartcard-reader: add debug environment variables

2013-04-24 11:47:57 +03:00

envlist.c

util: Fix compilation of envlist.c for MinGW

2013-02-02 20:13:19 +00:00

error.c

…

event_notifier-posix.c

sysemu: avoid proliferation of include/ subdirectories

2013-04-15 18:19:25 +02:00

event_notifier-win32.c

…

fifo8.c

hw: move fifo.[ch] to libqemuutil

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

hbitmap.c

hbitmap: Use non-bitops ctzl

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

hexdump.c

Rename hexdump to avoid FreeBSD libutil conflict

2013-05-20 08:20:08 -05:00

host-utils.c

host-utils: Improve mulu64 and muls64

2013-02-17 14:28:58 +00:00

iov.c

iov: handle EOF in iov_send_recv

2013-08-13 09:30:50 -05:00

Makefile.objs

create qemu_openpty_raw() helper function and move it to a separate file

2013-06-14 18:58:27 -05:00

module.c

…

notify.c

…

osdep.c

win32: add readv/writev emulation

2013-04-29 10:52:36 +02:00

oslib-posix.c

osdep: introduce qemu_anon_ram_free to free qemu_anon_ram_alloc-ed memory

2013-05-14 08:53:31 -05:00

oslib-win32.c

osdep: introduce qemu_anon_ram_free to free qemu_anon_ram_alloc-ed memory

2013-05-14 08:53:31 -05:00

path.c

Replace non-portable asprintf by g_strdup_printf

2013-01-19 10:24:43 +00:00

qemu-config.c

monitor: introduce query-command-line-options

2013-04-25 10:07:06 -04:00

qemu-error.c

…

qemu-openpty.c

create qemu_openpty_raw() helper function and move it to a separate file

2013-06-14 18:58:27 -05:00

qemu-option.c

qemu-option: Add qemu_opts_absorb_qdict()

2013-03-15 16:07:49 +01:00

qemu-progress.c

…

qemu-sockets.c

qemu-socket: allow hostnames starting with a digit

2013-06-18 12:51:46 -05:00

qemu-thread-posix.c

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

2013-08-13 09:30:50 -05:00

qemu-thread-win32.c

…

qemu-timer-common.c

Allow clock_gettime() monotonic clock to be utilized on more OS's

2013-04-04 20:22:45 -05:00

unicode.c

unicode: New mod_utf8_codepoint()

2013-04-13 19:39:59 +00:00

uri.c

clean unnecessary code: don't check g_strdup arg for NULL

2013-05-12 13:25:55 +04:00