Add Usage controls

Add Usage controls and implement "usage/usagefd" commands.

PiperOrigin-RevId: 390507423

1 files changed, 18 insertions, 0 deletions

diff --git a/runsc/container/container.go b/runsc/container/container.go
index d1f979eb2..381f57574 100644
--- a/runsc/container/container.go
+++ b/runsc/container/container.go
@@ -652,6 +652,24 @@ func (c *Container) Cat(files []string, out *os.File) error {
 	return c.Sandbox.Cat(c.ID, files, out)
 }
 
+// Usage displays memory used by the application.
+func (c *Container) Usage(full bool) (control.MemoryUsage, error) {
+	log.Debugf("Usage in container, cid: %s, full: %v", c.ID, full)
+	return c.Sandbox.Usage(c.ID, full)
+}
+
+// UsageFD shows application memory usage using two donated FDs.
+func (c *Container) UsageFD() (*control.MemoryUsageRecord, error) {
+	log.Debugf("UsageFD in container, cid: %s", c.ID)
+	return c.Sandbox.UsageFD(c.ID)
+}
+
+// Reduce requests that the sentry attempt to reduce its memory usage.
+func (c *Container) Reduce(wait bool) error {
+	log.Debugf("Reduce in container, cid: %s", c.ID)
+	return c.Sandbox.Reduce(c.ID, wait)
+}
+
 // State returns the metadata of the container.
 func (c *Container) State() specs.State {
 	return specs.State{