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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package pprof
import (
"bytes"
"internal/profile"
"runtime"
"testing"
)
func TestConvertMemProfile(t *testing.T) {
addr1, addr2, map1, map2 := testPCs(t)
// MemProfileRecord stacks are return PCs, so add one to the
// addresses recorded in the "profile". The proto profile
// locations are call PCs, so conversion will subtract one
// from these and get back to addr1 and addr2.
a1, a2 := uintptr(addr1)+1, uintptr(addr2)+1
rate := int64(512 * 1024)
rec := []runtime.MemProfileRecord{
{AllocBytes: 4096, FreeBytes: 1024, AllocObjects: 4, FreeObjects: 1, Stack0: [32]uintptr{a1, a2}},
{AllocBytes: 512 * 1024, FreeBytes: 0, AllocObjects: 1, FreeObjects: 0, Stack0: [32]uintptr{a2 + 1, a2 + 2}},
{AllocBytes: 512 * 1024, FreeBytes: 512 * 1024, AllocObjects: 1, FreeObjects: 1, Stack0: [32]uintptr{a1 + 1, a1 + 2, a2 + 3}},
}
periodType := &profile.ValueType{Type: "space", Unit: "bytes"}
sampleType := []*profile.ValueType{
{Type: "alloc_objects", Unit: "count"},
{Type: "alloc_space", Unit: "bytes"},
{Type: "inuse_objects", Unit: "count"},
{Type: "inuse_space", Unit: "bytes"},
}
samples := []*profile.Sample{
{
Value: []int64{2050, 2099200, 1537, 1574400},
Location: []*profile.Location{
{ID: 1, Mapping: map1, Address: addr1},
{ID: 2, Mapping: map2, Address: addr2},
},
NumLabel: map[string][]int64{"bytes": {1024}},
},
{
Value: []int64{1, 829411, 1, 829411},
Location: []*profile.Location{
{ID: 3, Mapping: map2, Address: addr2 + 1},
{ID: 4, Mapping: map2, Address: addr2 + 2},
},
NumLabel: map[string][]int64{"bytes": {512 * 1024}},
},
{
Value: []int64{1, 829411, 0, 0},
Location: []*profile.Location{
{ID: 5, Mapping: map1, Address: addr1 + 1},
{ID: 6, Mapping: map1, Address: addr1 + 2},
{ID: 7, Mapping: map2, Address: addr2 + 3},
},
NumLabel: map[string][]int64{"bytes": {512 * 1024}},
},
}
for _, tc := range []struct {
name string
defaultSampleType string
}{
{"heap", ""},
{"allocs", "alloc_space"},
} {
t.Run(tc.name, func(t *testing.T) {
var buf bytes.Buffer
if err := writeHeapProto(&buf, rec, rate, tc.defaultSampleType); err != nil {
t.Fatalf("writing profile: %v", err)
}
p, err := profile.Parse(&buf)
if err != nil {
t.Fatalf("profile.Parse: %v", err)
}
checkProfile(t, p, rate, periodType, sampleType, samples, tc.defaultSampleType)
})
}
}
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