| // Copyright Istio Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package profile |
| |
| import ( |
| "flag" |
| "os" |
| ) |
| |
| import ( |
| "github.com/felixge/fgprof" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pkg/test" |
| ) |
| |
| var fprof string |
| |
| // init initializes additional profiling flags |
| // Go comes with some, like -cpuprofile and -memprofile by default, so those are elided. |
| func init() { |
| flag.StringVar(&fprof, "fullprofile", "", "enable full profile. Path will be relative to test directory") |
| } |
| |
| // FullProfile runs a "Full" profile (https://github.com/felixge/fgprof). This differs from standard |
| // CPU profile, as it includes both IO blocking and CPU usage in one profile, giving a full view of |
| // the application. |
| func FullProfile(t test.Failer) { |
| if fprof == "" { |
| return |
| } |
| f, err := os.Create(fprof) |
| if err != nil { |
| t.Fatalf("%v", err) |
| } |
| stop := fgprof.Start(f, fgprof.FormatPprof) |
| |
| t.Cleanup(func() { |
| if err := stop(); err != nil { |
| t.Fatal(err) |
| } |
| if err := f.Close(); err != nil { |
| t.Fatal(err) |
| } |
| }) |
| } |