From dc864d3a3777424187280e50c9bfb84dced54f12 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Tue, 7 Nov 2023 04:20:55 -0500 Subject: [PATCH] osdep: add getloadavg 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 --- include/qemu/osdep.h | 10 ++++++++++ meson.build | 1 + 2 files changed, 11 insertions(+) diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h index 475a1c62ff..d30ba73eda 100644 --- a/include/qemu/osdep.h +++ b/include/qemu/osdep.h @@ -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 diff --git a/meson.build b/meson.build index ec01f8b138..d2c4c2adb3 100644 --- a/meson.build +++ b/meson.build @@ -2293,6 +2293,7 @@ config_host_data.set('HAVE_GLIB_WITH_SLICE_ALLOCATOR', glib_has_gslice) config_host_data.set('HAVE_OPENPTY', cc.has_function('openpty', dependencies: util)) config_host_data.set('HAVE_STRCHRNUL', cc.has_function('strchrnul')) config_host_data.set('HAVE_SYSTEM_FUNCTION', cc.has_function('system', prefix: '#include ')) +config_host_data.set('HAVE_GETLOADAVG_FUNCTION', cc.has_function('getloadavg', prefix: '#include ')) if rbd.found() config_host_data.set('HAVE_RBD_NAMESPACE_EXISTS', cc.has_function('rbd_namespace_exists', -- 2.30.2