diff options
Diffstat (limited to 'libgo/go/runtime/debug.go')
| -rw-r--r-- | libgo/go/runtime/debug.go | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/libgo/go/runtime/debug.go b/libgo/go/runtime/debug.go index b802fc63f71d..e9d7601710c1 100644 --- a/libgo/go/runtime/debug.go +++ b/libgo/go/runtime/debug.go @@ -138,6 +138,31 @@ func CPUProfile() []byte // SetCPUProfileRate directly. func SetCPUProfileRate(hz int) +// SetBlockProfileRate controls the fraction of goroutine blocking events +// that are reported in the blocking profile. The profiler aims to sample +// an average of one blocking event per rate nanoseconds spent blocked. +// +// To include every blocking event in the profile, pass rate = 1. +// To turn off profiling entirely, pass rate <= 0. +func SetBlockProfileRate(rate int) + +// BlockProfileRecord describes blocking events originated +// at a particular call sequence (stack trace). +type BlockProfileRecord struct { + Count int64 + Cycles int64 + StackRecord +} + +// BlockProfile returns n, the number of records in the current blocking profile. +// If len(p) >= n, BlockProfile copies the profile into p and returns n, true. +// If len(p) < n, BlockProfile does not change p and returns n, false. +// +// Most clients should use the runtime/pprof package or +// the testing package's -test.blockprofile flag instead +// of calling BlockProfile directly. +func BlockProfile(p []BlockProfileRecord) (n int, ok bool) + // Stack formats a stack trace of the calling goroutine into buf // and returns the number of bytes written to buf. // If all is true, Stack formats stack traces of all other goroutines |