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| author | Cornelia Huck | 2018-08-30 16:59:01 +0200 |
|---|---|---|
| committer | Markus Armbruster | 2018-09-24 17:13:07 +0200 |
| commit | c55510b72218a2d0b263eda006fd7aac1496b694 (patch) | |
| tree | d62c582b3d29c693f68ec6f55accc828bb98b228 /hw | |
| parent | Merge remote-tracking branch 'remotes/xanclic/tags/pull-block-2018-08-31-v2' ... (diff) | |
| download | qemu-c55510b72218a2d0b263eda006fd7aac1496b694.tar.gz qemu-c55510b72218a2d0b263eda006fd7aac1496b694.tar.xz qemu-c55510b72218a2d0b263eda006fd7aac1496b694.zip | |
qemu-error: add {error, warn}_report_once_cond
Add two functions to print an error/warning report once depending
on a passed-in condition variable and flip it if printed. This is
useful if you want to print a message not once-globally, but e.g.
once-per-device.
Inspired by warn_once() in hw/vfio/ccw.c, which has been replaced
with warn_report_once_cond().
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20180830145902.27376-2-cohuck@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Function comments reworded]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/vfio/ccw.c | 18 |
1 files changed, 3 insertions, 15 deletions
diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c index e96bbdc78b..9246729a75 100644 --- a/hw/vfio/ccw.c +++ b/hw/vfio/ccw.c @@ -37,24 +37,12 @@ typedef struct VFIOCCWDevice { bool warned_orb_pfch; } VFIOCCWDevice; -static inline void warn_once(bool *warned, const char *fmt, ...) -{ - va_list ap; - - if (!warned || *warned) { - return; - } - *warned = true; - va_start(ap, fmt); - warn_vreport(fmt, ap); - va_end(ap); -} - static inline void warn_once_pfch(VFIOCCWDevice *vcdev, SubchDev *sch, const char *msg) { - warn_once(&vcdev->warned_orb_pfch, "vfio-ccw (devno %x.%x.%04x): %s", - sch->cssid, sch->ssid, sch->devno, msg); + warn_report_once_cond(&vcdev->warned_orb_pfch, + "vfio-ccw (devno %x.%x.%04x): %s", + sch->cssid, sch->ssid, sch->devno, msg); } static void vfio_ccw_compute_needs_reset(VFIODevice *vdev) |