75 lines
2.1 KiB
Go
75 lines
2.1 KiB
Go
|
// +build matprofile
|
||
|
|
|
||
|
|
package gocv
|
||
|
|
|
||
|
|
/*
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include "core.h"
|
||
|
|
*/
|
||
|
|
import (
|
||
|
|
"C"
|
||
|
|
)
|
||
|
|
|
||
|
|
import (
|
||
|
|
"runtime/pprof"
|
||
|
|
)
|
||
|
|
|
||
|
|
// MatProfile a pprof.Profile that contains stack traces that led to (currently)
|
||
|
|
// unclosed Mat's creations. Every time a Mat is created, the stack trace is
|
||
|
|
// added to this profile and every time the Mat is closed the trace is removed.
|
||
|
|
// In a program that is not leaking, this profile's count should not
|
||
|
|
// continuously increase and ideally when a program is terminated the count
|
||
|
|
// should be zero. You can get the count at any time with:
|
||
|
|
//
|
||
|
|
// gocv.MatProfile.Count()
|
||
|
|
//
|
||
|
|
// and you can display the current entries with:
|
||
|
|
//
|
||
|
|
// var b bytes.Buffer
|
||
|
|
// gocv.MatProfile.WriteTo(&b, 1)
|
||
|
|
// fmt.Print(b.String())
|
||
|
|
//
|
||
|
|
// This will display stack traces of where the unclosed Mats were instantiated.
|
||
|
|
// For example, the results could look something like this:
|
||
|
|
//
|
||
|
|
// 1 @ 0x4146a0c 0x4146a57 0x4119666 0x40bb18f 0x405a841
|
||
|
|
// # 0x4146a0b gocv.io/x/gocv.newMat+0x4b /go/src/gocv.io/x/gocv/core.go:120
|
||
|
|
// # 0x4146a56 gocv.io/x/gocv.NewMat+0x26 /go/src/gocv.io/x/gocv/core.go:126
|
||
|
|
// # 0x4119665 gocv.io/x/gocv.TestMat+0x25 /go/src/gocv.io/x/gocv/core_test.go:29
|
||
|
|
// # 0x40bb18e testing.tRunner+0xbe /usr/local/Cellar/go/1.11/libexec/src/testing/testing.go:827
|
||
|
|
//
|
||
|
|
// Furthermore, if the program is a long running process or if gocv is being used on a
|
||
|
|
// web server, it may be helpful to install the HTTP interface using:
|
||
|
|
//
|
||
|
|
// import _ "net/http/pprof"
|
||
|
|
//
|
||
|
|
// In order to include the MatProfile custom profiler, you MUST build or run your application
|
||
|
|
// or tests using the following build tag:
|
||
|
|
// -tags matprofile
|
||
|
|
//
|
||
|
|
// For more information, see the runtime/pprof package documentation.
|
||
|
|
var MatProfile *pprof.Profile
|
||
|
|
|
||
|
|
func init() {
|
||
|
|
profName := "gocv.io/x/gocv.Mat"
|
||
|
|
MatProfile = pprof.Lookup(profName)
|
||
|
|
if MatProfile == nil {
|
||
|
|
MatProfile = pprof.NewProfile(profName)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// newMat returns a new Mat from a C Mat and records it to the MatProfile.
|
||
|
|
func newMat(p C.Mat) Mat {
|
||
|
|
m := Mat{p: p}
|
||
|
|
MatProfile.Add(p, 1)
|
||
|
|
return m
|
||
|
|
}
|
||
|
|
|
||
|
|
// Close the Mat object.
|
||
|
|
func (m *Mat) Close() error {
|
||
|
|
C.Mat_Close(m.p)
|
||
|
|
MatProfile.Remove(m.p)
|
||
|
|
m.p = nil
|
||
|
|
return nil
|
||
|
|
}
|