Metrics2: Store a registry of Counters

fuzzer/go/generator/afl_generation.go

 package generator
 
 import (
         "fmt"
         "io/ioutil"
         "os"
         "path/filepath"
         "strings"
 
         "github.com/skia-dev/glog"
@@ skipping 48 matching lines @@
 
         fuzzCount := config.Generator.NumBinaryFuzzProcesses
         if strings.HasPrefix(g.Category, "api_") {
                 fuzzCount = config.Generator.NumAPIFuzzProcesses
         }
         if fuzzCount <= 0 {
                 // TODO(kjlubick): Make this actually an intelligent number based on the number of cores.
                 fuzzCount = 4
         }
 
-        g.fuzzProcessCount = metrics2.NewCounter("afl-fuzz-process-count", map[string]string{"category": g.Category})
+        g.fuzzProcessCount = metrics2.GetCounter("afl-fuzz-process-count", map[string]string{"category": g.Category})
         g.fuzzProcessCount.Inc(int64(fuzzCount))
         for i := 1; i < fuzzCount; i++ {
                 fuzzerName := fmt.Sprintf("fuzzer%d", i)
                 slaveCmd := &exec.Command{
                         Name:      "./afl-fuzz",
                         Args:      common.GenerationArgsFor(g.Category, executable, fuzzerName, false),
                         Dir:       config.Generator.AflRoot,
                         LogStdout: true,
                         LogStderr: true,
                         Env:       []string{"AFL_SKIP_CPUFREQ=true"}, // Avoids a warning afl-fuzz spits out about dynamic scaling of cpu frequency
@@ skipping 104 matching lines @@
                         glog.Errorf("[%s] Problem downloading %s from Google Storage, continuing anyway", g.Category, item.Name)
                         return
                 }
                 fileName := filepath.Join(seedPath, strings.SplitAfter(name, gsFolder)[1])
                 if err = ioutil.WriteFile(fileName, content, 0644); err != nil && !os.IsExist(err) {
                         glog.Errorf("[%s] Problem creating binary seed file %s, continuing anyway", g.Category, fileName)
                 }
         })
         return err
 }