Index: content/browser/bluetooth/tools/bluetooth_metrics_hash.cc |
diff --git a/content/browser/bluetooth/tools/bluetooth_metrics_hash.cc b/content/browser/bluetooth/tools/bluetooth_metrics_hash.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..1b502830d11944f20c909ffc1b1b6c50dbc498c7 |
--- /dev/null |
+++ b/content/browser/bluetooth/tools/bluetooth_metrics_hash.cc |
@@ -0,0 +1,47 @@ |
+// Copyright 2016 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 <iostream> |
+ |
+#include "base/hash.h" |
+#include "base/logging.h" |
+#include "device/bluetooth/bluetooth_uuid.h" |
+ |
+int main(int argc, char** argv) { |
+ if (argc <= 1) { |
+ std::cout << "Generates hash values given UUIDs using the same method\n" |
+ << "as in bluetooth_metrics.cc.\n" |
+ << "\n" |
+ << "Output is formatted for including into histograms.xml.\n" |
+ << "Note that tools/metrics/histograms/pretty_print.py will\n" |
+ << "sort enum entries for you.\n" |
+ << "\n" |
+ << "Usage: " << argv[0] << " <uuid> [uuid2 ...]\n" |
+ << " The UUIDs may be short UUIDs, and will be made\n" |
+ << " canonical before being hashed.\n" |
+ << "\n" |
+ << "Example: " << argv[0] << " FEFF FEFE\n" |
+ << " <int value=\"62669585\" " |
+ "label=\"0000feff-0000-1000-8000-00805f9b34fb\"/>\n" |
+ << " <int value=\"643543662\" " |
+ "label=\"0000fefe-0000-1000-8000-00805f9b34fb\"/>\n"; |
+ return 1; |
+ } |
+ |
+ for (int i = 1; i < argc; i++) { |
+ std::string input_string(argv[i]); |
+ device::BluetoothUUID uuid(input_string); |
+ std::string uuid_canonical_string = uuid.canonical_value(); |
+ uint32_t hash = base::SuperFastHash(uuid_canonical_string.data(), |
+ uuid_canonical_string.size()); |
+ |
+ // Strip off the sign bit because UMA doesn't support negative values, |
+ // but takes a signed int as input. |
+ hash &= 0x7fffffff; |
+ |
+ std::cout << " <int value=\"" << hash << "\" label=\"" |
+ << uuid_canonical_string << "\"/>\n"; |
+ } |
+ return 0; |
+} |