diff options
| author | Gyu-Ho Lee <gyuhox@gmail.com> | 2016-06-04 23:20:45 -0700 |
|---|---|---|
| committer | Brad Fitzpatrick <bradfitz@golang.org> | 2016-10-12 06:33:34 +0000 |
| commit | 456b7f5a974f229e0ef7ad5a1925fa72fc4182e2 (patch) | |
| tree | 8da10d84f3379265d44842b9bae27bd909049c15 /src/runtime/pprof | |
| parent | 81b9af7cccce8234319551330cb6406469f32bab (diff) | |
| download | go-456b7f5a974f229e0ef7ad5a1925fa72fc4182e2.tar.xz | |
runtime/pprof: preallocate slice in pprof.go
To prevent slice growth when appending.
Change-Id: I2cdb9b09bc33f63188b19573c8b9a77601e63801
Reviewed-on: https://go-review.googlesource.com/23783
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Diffstat (limited to 'src/runtime/pprof')
| -rw-r--r-- | src/runtime/pprof/pprof.go | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/runtime/pprof/pprof.go b/src/runtime/pprof/pprof.go index b4dd1c4173..9fd477908c 100644 --- a/src/runtime/pprof/pprof.go +++ b/src/runtime/pprof/pprof.go @@ -202,7 +202,7 @@ func Profiles() []*Profile { lockProfiles() defer unlockProfiles() - var all []*Profile + all := make([]*Profile, 0, len(profiles.m)) for _, p := range profiles.m { all = append(all, p) } @@ -293,7 +293,7 @@ func (p *Profile) WriteTo(w io.Writer, debug int) error { } // Obtain consistent snapshot under lock; then process without lock. - var all [][]uintptr + all := make([][]uintptr, 0, len(p.m)) p.mu.Lock() for _, stk := range p.m { all = append(all, stk) |