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/process_memory_maps.h"
6
7 #include "base/format_macros.h"
8 #include "base/strings/stringprintf.h"
9 #include "base/trace_event/trace_event_argument.h"
10
11 namespace base {
12 namespace trace_event {
13
14 // static
15 const uint32_t ProcessMemoryMaps::VMRegion::kProtectionFlagsRead = 4;
16 const uint32_t ProcessMemoryMaps::VMRegion::kProtectionFlagsWrite = 2;
17 const uint32_t ProcessMemoryMaps::VMRegion::kProtectionFlagsExec = 1;
18 const uint32_t ProcessMemoryMaps::VMRegion::kProtectionFlagsMayshare = 128;
19
VMRegion()20 ProcessMemoryMaps::VMRegion::VMRegion()
21 : start_address(0),
22 size_in_bytes(0),
23 protection_flags(0),
24 byte_stats_private_dirty_resident(0),
25 byte_stats_private_clean_resident(0),
26 byte_stats_shared_dirty_resident(0),
27 byte_stats_shared_clean_resident(0),
28 byte_stats_swapped(0),
29 byte_stats_proportional_resident(0) {
30 }
31
32 ProcessMemoryMaps::VMRegion::VMRegion(const VMRegion& other) = default;
33
ProcessMemoryMaps()34 ProcessMemoryMaps::ProcessMemoryMaps() {
35 }
36
~ProcessMemoryMaps()37 ProcessMemoryMaps::~ProcessMemoryMaps() {
38 }
39
AsValueInto(TracedValue * value) const40 void ProcessMemoryMaps::AsValueInto(TracedValue* value) const {
41 static const char kHexFmt[] = "%" PRIx64;
42
43 // Refer to the design doc goo.gl/sxfFY8 for the semantic of these fields.
44 value->BeginArray("vm_regions");
45 for (const auto& region : vm_regions_) {
46 value->BeginDictionary();
47
48 value->SetString("sa", StringPrintf(kHexFmt, region.start_address));
49 value->SetString("sz", StringPrintf(kHexFmt, region.size_in_bytes));
50 value->SetInteger("pf", region.protection_flags);
51 value->SetString("mf", region.mapped_file);
52
53 value->BeginDictionary("bs"); // byte stats
54 value->SetString(
55 "pss", StringPrintf(kHexFmt, region.byte_stats_proportional_resident));
56 value->SetString(
57 "pd", StringPrintf(kHexFmt, region.byte_stats_private_dirty_resident));
58 value->SetString(
59 "pc", StringPrintf(kHexFmt, region.byte_stats_private_clean_resident));
60 value->SetString(
61 "sd", StringPrintf(kHexFmt, region.byte_stats_shared_dirty_resident));
62 value->SetString(
63 "sc", StringPrintf(kHexFmt, region.byte_stats_shared_clean_resident));
64 value->SetString("sw", StringPrintf(kHexFmt, region.byte_stats_swapped));
65 value->EndDictionary();
66
67 value->EndDictionary();
68 }
69 value->EndArray();
70 }
71
Clear()72 void ProcessMemoryMaps::Clear() {
73 vm_regions_.clear();
74 }
75
76 } // namespace trace_event
77 } // namespace base
78