1 /* 2 * Copyright 2010 The Android Open Source Project 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "config.h" 27 #include "MemoryUsage.h" 28 29 #include <v8.h> 30 31 // Workaround an issue where malloc_footprint is in malloc.h 32 // but is not actually implemented. 33 // See: http://code.google.com/p/android/issues/detail?id=34897 34 extern "C" size_t dlmalloc_footprint(void); 35 36 using namespace WTF; 37 38 int MemoryUsage::memoryUsageMb(bool /* forceFresh */) 39 { 40 size_t footprint = dlmalloc_footprint() >> 20; 41 v8::HeapStatistics stat; 42 v8::V8::GetHeapStatistics(&stat); 43 unsigned v8Usage = stat.total_heap_size() >> 20; 44 return footprint + v8Usage; 45 } 46 47 int MemoryUsage::m_lowMemoryUsageMb = 0; 48 int MemoryUsage::m_highMemoryUsageMb = 0; 49 int MemoryUsage::m_highUsageDeltaMb = 0; 50
