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author | gVisor bot <gvisor-bot@google.com> | 2019-12-17 23:21:18 +0000 |
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committer | gVisor bot <gvisor-bot@google.com> | 2019-12-17 23:21:18 +0000 |
commit | 7868f5a23b07ec1057e2ef34a7b526708f04bd28 (patch) | |
tree | 99865103d693fcd1ab85ce635b7b9753e9a128b1 /runsc/cgroup | |
parent | 10ff034b94702f317135ce51a52b3d19236f2594 (diff) | |
parent | 725e73eed081a5a063054511da63d0771f6705a1 (diff) |
Merge release-20191210.0-46-g725e73e (automated)
Diffstat (limited to 'runsc/cgroup')
-rw-r--r-- | runsc/cgroup/cgroup.go | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/runsc/cgroup/cgroup.go b/runsc/cgroup/cgroup.go index ab3a25b9b..653ca5f52 100644 --- a/runsc/cgroup/cgroup.go +++ b/runsc/cgroup/cgroup.go @@ -101,6 +101,14 @@ func getValue(path, name string) (string, error) { return string(out), nil } +func getInt(path, name string) (int, error) { + s, err := getValue(path, name) + if err != nil { + return 0, err + } + return strconv.Atoi(strings.TrimSpace(s)) +} + // fillFromAncestor sets the value of a cgroup file from the first ancestor // that has content. It does nothing if the file in 'path' has already been set. func fillFromAncestor(path string) (string, error) { @@ -323,6 +331,22 @@ func (c *Cgroup) Join() (func(), error) { return undo, nil } +func (c *Cgroup) CPUQuota() (float64, error) { + path := c.makePath("cpu") + quota, err := getInt(path, "cpu.cfs_quota_us") + if err != nil { + return -1, err + } + period, err := getInt(path, "cpu.cfs_period_us") + if err != nil { + return -1, err + } + if quota <= 0 || period <= 0 { + return -1, err + } + return float64(quota) / float64(period), nil +} + // NumCPU returns the number of CPUs configured in 'cpuset/cpuset.cpus'. func (c *Cgroup) NumCPU() (int, error) { path := c.makePath("cpuset") |