1 // Copyright 2015 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 #include "base/trace_event/memory_allocator_dump_guid.h"
6 
7 #include "base/format_macros.h"
8 #include "base/sha1.h"
9 #include "base/strings/stringprintf.h"
10 
11 namespace base {
12 namespace trace_event {
13 
14 namespace {
HashString(const std::string & str)15 uint64_t HashString(const std::string& str) {
16   uint64_t hash[(kSHA1Length + sizeof(uint64_t) - 1) / sizeof(uint64_t)] = {0};
17   SHA1HashBytes(reinterpret_cast<const unsigned char*>(str.data()), str.size(),
18                 reinterpret_cast<unsigned char*>(hash));
19   return hash[0];
20 }
21 }  // namespace
22 
MemoryAllocatorDumpGuid(uint64_t guid)23 MemoryAllocatorDumpGuid::MemoryAllocatorDumpGuid(uint64_t guid) : guid_(guid) {}
24 
MemoryAllocatorDumpGuid()25 MemoryAllocatorDumpGuid::MemoryAllocatorDumpGuid()
26     : MemoryAllocatorDumpGuid(0u) {
27 }
28 
MemoryAllocatorDumpGuid(const std::string & guid_str)29 MemoryAllocatorDumpGuid::MemoryAllocatorDumpGuid(const std::string& guid_str)
30     : MemoryAllocatorDumpGuid(HashString(guid_str)) {
31 }
32 
ToString() const33 std::string MemoryAllocatorDumpGuid::ToString() const {
34   return StringPrintf("%" PRIx64, guid_);
35 }
36 
37 }  // namespace trace_event
38 }  // namespace base
39