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osdep: add getloadavg

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getloadavg is supported on Linux, BSDs, Solaris.

Following man page:
RETURN VALUE
       If the load average was unobtainable, -1 is returned; otherwise,
       the number of samples actually retrieved is returned.

accordingly, make stub for systems which don't support this function return -1
for consistency.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2023-11-07 04:20:55 -05:00
parent abf635ddfe
commit dc864d3a37
2 changed files with 11 additions and 0 deletions
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10
include/qemu/osdep.h
View file

@ -779,6 +779,16 @@ static inline int platform_does_not_support_system(const char *command)
}
#endif /* !HAVE_SYSTEM_FUNCTION */
/**
* If the load average was unobtainable, -1 is returned
*/
#ifndef HAVE_GETLOADAVG_FUNCTION
static inline int getloadavg(double loadavg[], int nelem)
{
return -1;
}
#endif /* !HAVE_GETLOADAVG_FUNCTION */
#ifdef __cplusplus
}
#endif