1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_GUID_H_ 6 #define BASE_GUID_H_ 7 8 #include <stdint.h> 9 10 #include <string> 11 12 #include "base/base_export.h" 13 #include "build/build_config.h" 14 15 namespace base { 16 17 // Generate a 128-bit random GUID of the form: "%08X-%04X-%04X-%04X-%012llX". 18 // If GUID generation fails an empty string is returned. 19 // The POSIX implementation uses pseudo random number generation to create 20 // the GUID. The Windows implementation uses system services. 21 std::string GenerateGUID(); 22 23 #if defined(OS_POSIX) 24 // For unit testing purposes only. Do not use outside of tests. 25 std::string RandomDataToGUIDString(const uint64_t bytes[2]); 26 #endif 27 28 } // namespace base 29 30 #endif // BASE_GUID_H_ 31