1/* 2 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved. 3 * Copyright (C) 2012 Samsung Electronics 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 21 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 23 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "WebMemorySampler.h" 28 29#if ENABLE(MEMORY_SAMPLER) 30 31#include "NotImplemented.h" 32#include <JavaScriptCore/MemoryStatistics.h> 33#include <runtime/JSCInlines.h> 34#include <WebCore/JSDOMWindow.h> 35#include <runtime/JSLock.h> 36#include <string.h> 37#include <sys/sysinfo.h> 38#include <wtf/CurrentTime.h> 39#include <wtf/text/WTFString.h> 40 41using namespace WebCore; 42using namespace JSC; 43using namespace WTF; 44 45namespace WebKit { 46 47struct ApplicationMemoryStats { 48 size_t totalProgramSize; 49 size_t residentSetSize; 50 size_t sharedSize; 51 size_t textSize; 52 size_t librarySize; 53 size_t dataStackSize; 54 size_t dirtyPageSize; 55}; 56 57static const unsigned int maxBuffer = 128; 58static const unsigned int maxProcessPath = 35; 59 60static inline String nextToken(FILE* file) 61{ 62 ASSERT(file); 63 if (!file) 64 return String(); 65 66 char buffer[maxBuffer] = {0, }; 67 unsigned int index = 0; 68 while (index < maxBuffer) { 69 char ch = fgetc(file); 70 if (ch == EOF || (isASCIISpace(ch) && index)) // Break on non-initial ASCII space. 71 break; 72 if (!isASCIISpace(ch)) { 73 buffer[index] = ch; 74 index++; 75 } 76 } 77 78 return String(buffer); 79} 80 81static inline void appendKeyValuePair(WebMemoryStatistics& stats, const String& key, size_t value) 82{ 83 stats.keys.append(key); 84 stats.values.append(value); 85} 86 87static ApplicationMemoryStats sampleMemoryAllocatedForApplication() 88{ 89 ApplicationMemoryStats applicationStats; 90 char processPath[maxProcessPath]; 91 snprintf(processPath, maxProcessPath, "/proc/self/statm"); 92 FILE* statmFileDescriptor = fopen(processPath, "r"); 93 if (!statmFileDescriptor) 94 return applicationStats; 95 96 applicationStats.totalProgramSize = nextToken(statmFileDescriptor).toInt(); 97 applicationStats.residentSetSize = nextToken(statmFileDescriptor).toInt(); 98 applicationStats.sharedSize = nextToken(statmFileDescriptor).toInt(); 99 applicationStats.textSize = nextToken(statmFileDescriptor).toInt(); 100 applicationStats.librarySize = nextToken(statmFileDescriptor).toInt(); 101 applicationStats.dataStackSize = nextToken(statmFileDescriptor).toInt(); 102 applicationStats.dirtyPageSize = nextToken(statmFileDescriptor).toInt(); 103 104 fclose(statmFileDescriptor); 105 106 return applicationStats; 107} 108 109String WebMemorySampler::processName() const 110{ 111 char processPath[maxProcessPath]; 112 snprintf(processPath, maxProcessPath, "/proc/self/status"); 113 FILE* statusFileDescriptor = fopen(processPath, "r"); 114 if (!statusFileDescriptor) 115 return String(); 116 117 nextToken(statusFileDescriptor); 118 String processName = nextToken(statusFileDescriptor); 119 120 fclose(statusFileDescriptor); 121 122 return processName; 123} 124 125WebMemoryStatistics WebMemorySampler::sampleWebKit() const 126{ 127 WebMemoryStatistics webKitMemoryStats; 128 129 double now = currentTime(); 130 131 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Timestamp"), now); 132 133 ApplicationMemoryStats applicationStats = sampleMemoryAllocatedForApplication(); 134 135 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Total Program Size"), applicationStats.totalProgramSize); 136 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("RSS"), applicationStats.residentSetSize); 137 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Shared"), applicationStats.sharedSize); 138 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Text"), applicationStats.textSize); 139 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Library"), applicationStats.librarySize); 140 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Data/Stack"), applicationStats.dataStackSize); 141 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Dirty"), applicationStats.dirtyPageSize); 142 143 size_t totalBytesInUse = 0; 144 size_t totalBytesCommitted = 0; 145 146#if ENABLE(GLOBAL_FASTMALLOC_NEW) 147 FastMallocStatistics fastMallocStatistics = WTF::fastMallocStatistics(); 148 size_t fastMallocBytesInUse = fastMallocStatistics.committedVMBytes - fastMallocStatistics.freeListBytes; 149 size_t fastMallocBytesCommitted = fastMallocStatistics.committedVMBytes; 150 totalBytesInUse += fastMallocBytesInUse; 151 totalBytesCommitted += fastMallocBytesCommitted; 152 153 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Fast Malloc In Use"), fastMallocBytesInUse); 154 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Fast Malloc Committed Memory"), fastMallocBytesCommitted); 155#endif 156 157 size_t jscHeapBytesInUse = JSDOMWindow::commonVM().heap.size(); 158 size_t jscHeapBytesCommitted = JSDOMWindow::commonVM().heap.capacity(); 159 totalBytesInUse += jscHeapBytesInUse; 160 totalBytesCommitted += jscHeapBytesCommitted; 161 162 GlobalMemoryStatistics globalMemoryStats = globalMemoryStatistics(); 163 totalBytesInUse += globalMemoryStats.stackBytes + globalMemoryStats.JITBytes; 164 totalBytesCommitted += globalMemoryStats.stackBytes + globalMemoryStats.JITBytes; 165 166 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("JavaScript Heap In Use"), jscHeapBytesInUse); 167 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("JavaScript Heap Commited Memory"), jscHeapBytesCommitted); 168 169 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("JavaScript Stack Bytes"), globalMemoryStats.stackBytes); 170 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("JavaScript JIT Bytes"), globalMemoryStats.JITBytes); 171 172 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Total Memory In Use"), totalBytesInUse); 173 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Total Committed Memory"), totalBytesCommitted); 174 175 struct sysinfo systemInfo; 176 if (!sysinfo(&systemInfo)) { 177 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("System Total Bytes"), systemInfo.totalram); 178 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Available Bytes"), systemInfo.freeram); 179 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Shared Bytes"), systemInfo.sharedram); 180 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Buffer Bytes"), systemInfo.bufferram); 181 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Total Swap Bytes"), systemInfo.totalswap); 182 appendKeyValuePair(webKitMemoryStats, ASCIILiteral("Available Swap Bytes"), systemInfo.freeswap); 183 } 184 185 return webKitMemoryStats; 186} 187 188void WebMemorySampler::sendMemoryPressureEvent() 189{ 190 notImplemented(); 191} 192 193} 194#endif 195