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| author | Peter Maydell <peter.maydell@linaro.org> | 2017-09-05 13:19:32 +0100 |
|---|---|---|
| committer | Michael Tokarev <mjt@tls.msk.ru> | 2017-09-26 09:06:02 +0300 |
| commit | 401bc051d7706e33046d79539465b8326383a1b2 (patch) | |
| tree | 74976781032c432aeb650335be8377f8be465c63 /include/qemu | |
| parent | 5746c1cd152033c3f9ccdb1476dbb0f092659983 (diff) | |
| download | qemu-401bc051d7706e33046d79539465b8326383a1b2.tar.gz | |
util/qemu-thread-posix.c: Replace OS ifdefs with CONFIG_HAVE_SEM_TIMEDWAIT
In qemu-thread-posix.c we have two implementations of the
various qemu_sem_* functions, one of which uses native POSIX
sem_* and the other of which emulates them with pthread conditions.
This is necessary because not all our host OSes support
sem_timedwait().
Instead of a hard-coded list of OSes which don't implement
sem_timedwait(), which gets out of date, make configure
test for the presence of the function and set a new
CONFIG_HAVE_SEM_TIMEDWAIT appropriately.
In particular, newer NetBSDs have sem_timedwait(), so this
commit will switch them over to using it. OSX still does
not have an implementation.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Kamil Rytarowski <n54@gmx.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Diffstat (limited to 'include/qemu')
| -rw-r--r-- | include/qemu/thread-posix.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/qemu/thread-posix.h b/include/qemu/thread-posix.h index e5e3a0ff97..f4296d31c4 100644 --- a/include/qemu/thread-posix.h +++ b/include/qemu/thread-posix.h @@ -21,7 +21,7 @@ struct QemuCond { }; struct QemuSemaphore { -#if defined(__APPLE__) || defined(__NetBSD__) +#ifndef CONFIG_SEM_TIMEDWAIT pthread_mutex_t lock; pthread_cond_t cond; unsigned int count; |