[libvirt PATCH v5 2/9] virthread: Introduce virLockGuard

[Daniel P. Berrangé]

On Tue, Feb 01, 2022 at 02:20:10PM +0100, Tim Wiederhake wrote:
> Locks a virMutex on creation and unlocks it in its destructor.
> 
> The VIR_LOCK_GUARD macro is used instead of "g_auto(virLockGuard)" to
> work around a clang issue (see https://bugs.llvm.org/show_bug.cgi?id=3888
> and https://bugs.llvm.org/show_bug.cgi?id=43482).
> 
> Typical usage:
> 
>     void function(virMutex *m)
>     {
>         VIR_LOCK_GUARD lock = virLockGuardLock(m);
>         /* `m` is locked, and released automatically on scope exit */
> 
>         ...
>         while (expression) {
>             VIR_LOCK_GUARD lock2 = virLockGuardLock(...);
>             /* similar */
>         }
>     }
> 
> Signed-off-by: Tim Wiederhake <twiederh at redhat.com>
> ---
>  src/libvirt_private.syms |  2 ++
>  src/util/virthread.c     | 15 +++++++++++++++
>  src/util/virthread.h     | 10 ++++++++++
>  3 files changed, 27 insertions(+)

Reviewed-by: Daniel P. Berrangé <berrange at redhat.com>


Regards,
Daniel
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