k3s/vendor/github.com/opencontainers/runc/libcontainer/stacktrace/capture.go
Darren Shepherd fa08d6076c Update vendor
2019-01-11 21:58:27 -07:00

28 lines
612 B
Go

package stacktrace
import "runtime"
// Capture captures a stacktrace for the current calling go program
//
// skip is the number of frames to skip
func Capture(userSkip int) Stacktrace {
var (
skip = userSkip + 1 // add one for our own function
frames []Frame
prevPc uintptr
)
for i := skip; ; i++ {
pc, file, line, ok := runtime.Caller(i)
//detect if caller is repeated to avoid loop, gccgo
//currently runs into a loop without this check
if !ok || pc == prevPc {
break
}
frames = append(frames, NewFrame(pc, file, line))
prevPc = pc
}
return Stacktrace{
Frames: frames,
}
}