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/hash/sha1.h"
9 #include "base/strings/stringprintf.h"
10 
11 namespace base {
12 namespace trace_event {
13 
14 namespace {
15 
HashString(const std::string & str)16 uint64_t HashString(const std::string& str) {
17   uint64_t hash[(kSHA1Length + sizeof(uint64_t) - 1) / sizeof(uint64_t)] = {0};
18   SHA1HashBytes(reinterpret_cast<const unsigned char*>(str.data()), str.size(),
19                 reinterpret_cast<unsigned char*>(hash));
20   return hash[0];
21 }
22 
23 }  // namespace
24 
MemoryAllocatorDumpGuid(uint64_t guid)25 MemoryAllocatorDumpGuid::MemoryAllocatorDumpGuid(uint64_t guid) : guid_(guid) {}
26 
MemoryAllocatorDumpGuid()27 MemoryAllocatorDumpGuid::MemoryAllocatorDumpGuid()
28     : MemoryAllocatorDumpGuid(0u) {
29 }
30 
MemoryAllocatorDumpGuid(const std::string & guid_str)31 MemoryAllocatorDumpGuid::MemoryAllocatorDumpGuid(const std::string& guid_str)
32     : MemoryAllocatorDumpGuid(HashString(guid_str)) {
33 }
34 
ToString() const35 std::string MemoryAllocatorDumpGuid::ToString() const {
36   return StringPrintf("%" PRIx64, guid_);
37 }
38 
39 }  // namespace trace_event
40 }  // namespace base
41