UMA metrics for cloud policies.

chrome/browser/policy/enterprise_metrics.cc

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/metrics/histogram.h"
+#include "chrome/browser/policy/enterprise_metrics.h"
+#include "content/browser/browser_thread.h"
+
+namespace enterprise_management {
+
+void LogTokenOperation(TokenOperationResult result) {
+  DCHECK(result >= 0);
+  DCHECK(result < kTokenOperationsSize);
+
+  if (!BrowserThread::CurrentlyOn(BrowserThread::UI)) {

[gfeher, 2011/06/28 09:58:58]

Are you sure this is necessary? I haven't seen this pattern elsewhere in the
code for UMA. (Although I may have missed it.) histogram.h talks something about
thread safety, so you may want to check it more carefully or ask its authors.

[Joao da Silva, 2011/06/30 12:57:00]

After checking histogram.h it seems to me that initialization of the counter is
thread safe, but adding samples is not.

Meanwhile this has been removed, and the call sites use
UMA_HISTOGRAM_ENUMERATION directly now, except the few that log from the FILE
thread.

+    BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
+                            NewRunnableFunction(&LogTokenOperation, result));
+    return;
+  }
+
+  UMA_HISTOGRAM_ENUMERATION("Enterprise.DMToken", result, kTokenOperationsSize);
+}
+
+void LogPolicyOperation(PolicyOperationResult result) {
+  DCHECK(result >= 0);
+  DCHECK(result < kPolicyOperationsSize);
+
+  if (!BrowserThread::CurrentlyOn(BrowserThread::UI)) {
+    BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
+                            NewRunnableFunction(&LogPolicyOperation, result));
+    return;
+  }
+
+  UMA_HISTOGRAM_ENUMERATION("Enterprise.Policy", result, kPolicyOperationsSize);
+}
+
+void LogEnrollmentOperation(EnrollmentResult result) {
+  DCHECK(result >= 0);
+  DCHECK(result < kEnrollmentOperationsSize);
+
+  if (!BrowserThread::CurrentlyOn(BrowserThread::UI)) {
+    BrowserThread::PostTask(
+        BrowserThread::UI, FROM_HERE,
+        NewRunnableFunction(&LogEnrollmentOperation, result));
+    return;
+  }
+
+  UMA_HISTOGRAM_ENUMERATION("Enterprise.Enrollment", result,
+                            kEnrollmentOperationsSize);
+}
+
+}  // namespace enterprise_management