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mkazhdan
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/*
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Copyright (c) 2006, Michael Kazhdan and Matthew Bolitho
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright notice, this list of
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conditions and the following disclaimer. Redistributions in binary form must reproduce
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the above copyright notice, this list of conditions and the following disclaimer
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in the documentation and/or other materials provided with the distribution.
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Neither the name of the Johns Hopkins University nor the names of its contributors
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may be used to endorse or promote products derived from this software without specific
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prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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DAMAGE.
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*/
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#ifndef MEMORY_USAGE_INCLUDED
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#define MEMORY_USAGE_INCLUDED
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#ifdef WIN32
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#include <Windows.h>
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class MemoryInfo
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{
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public:
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size_t TotalPhysicalMemory;
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size_t FreePhysicalMemory;
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size_t TotalSwapSpace;
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size_t FreeSwapSpace;
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size_t TotalVirtualAddressSpace;
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size_t FreeVirtualAddressSpace;
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size_t PageSize;
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void set(void){
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MEMORYSTATUSEX Mem;
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SYSTEM_INFO Info;
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ZeroMemory( &Mem, sizeof(Mem));
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ZeroMemory( &Info, sizeof(Info));
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Mem.dwLength = sizeof(Mem);
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::GlobalMemoryStatusEx( &Mem );
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::GetSystemInfo( &Info );
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TotalPhysicalMemory = (size_t)Mem.ullTotalPhys;
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FreePhysicalMemory = (size_t)Mem.ullAvailPhys;
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TotalSwapSpace = (size_t)Mem.ullTotalPageFile;
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FreeSwapSpace = (size_t)Mem.ullAvailPageFile;
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TotalVirtualAddressSpace = (size_t)Mem.ullTotalVirtual;
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FreeVirtualAddressSpace = (size_t)Mem.ullAvailVirtual;
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PageSize = (size_t)Info.dwPageSize;
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}
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size_t usage(void) const {return TotalVirtualAddressSpace-FreeVirtualAddressSpace;}
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static size_t Usage(void){
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MEMORY_BASIC_INFORMATION mbi;
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size_t dwMemUsed = 0;
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PVOID pvAddress = 0;
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memset(&mbi, 0, sizeof(MEMORY_BASIC_INFORMATION));
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while(VirtualQuery(pvAddress, &mbi, sizeof(MEMORY_BASIC_INFORMATION)) == sizeof(MEMORY_BASIC_INFORMATION)){
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if(mbi.State == MEM_COMMIT && mbi.Type == MEM_PRIVATE){dwMemUsed += mbi.RegionSize;}
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pvAddress = ((BYTE*)mbi.BaseAddress) + mbi.RegionSize;
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}
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return dwMemUsed;
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}
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};
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#else // !WIN32
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#ifndef __APPLE__ // Linux variants
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#include <sys/time.h>
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#include <sys/resource.h>
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class MemoryInfo
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{
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public:
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static size_t Usage(void)
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{
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FILE* f = fopen("/proc/self/stat","rb");
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int d;
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long ld;
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unsigned long lu;
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unsigned long long llu;
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char s[1024];
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char c;
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int pid;
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unsigned long vm;
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int n = fscanf(f, "%d %s %c %d %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %ld %ld %ld %ld %d %ld %llu %lu %ld %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu"
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,&pid ,s ,&c ,&d ,&d ,&d ,&d ,&d ,&lu ,&lu ,&lu ,&lu ,&lu ,&lu ,&lu ,&ld ,&ld ,&ld ,&ld ,&d ,&ld ,&llu ,&vm ,&ld ,&lu ,&lu ,&lu ,&lu ,&lu ,&lu ,&lu ,&lu ,&lu ,&lu ,&lu ,&lu ,&lu ,&d ,&d ,&lu ,&lu );
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fclose(f);
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/*
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pid %d
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comm %s
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state %c
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ppid %d
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pgrp %d
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session %d
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tty_nr %d
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tpgid %d
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flags %lu
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minflt %lu
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cminflt %lu
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majflt %lu
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cmajflt %lu
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utime %lu
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stime %lu
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cutime %ld
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cstime %ld
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priority %ld
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nice %ld
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0 %ld
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itrealvalue %ld
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starttime %lu
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vsize %lu
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rss %ld
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rlim %lu
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startcode %lu
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endcode %lu
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startstack %lu
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kstkesp %lu
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kstkeip %lu
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signal %lu
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blocked %lu
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sigignore %lu
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sigcatch %lu
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wchan %lu
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nswap %lu
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cnswap %lu
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exit_signal %d
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processor %d
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rt_priority %lu (since kernel 2.5.19)
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policy %lu (since kernel 2.5.19)
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*/
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return vm;
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}
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};
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#else // __APPLE__: has no "/proc" pseudo-file system
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// Thanks to David O'Gwynn for providing this fix.
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// This comes from a post by Michael Knight:
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//
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// http://miknight.blogspot.com/2005/11/resident-set-size-in-mac-os-x.html
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <mach/task.h>
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#include <mach/mach_init.h>
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void getres(task_t task, unsigned long *rss, unsigned long *vs)
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{
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struct task_basic_info t_info;
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mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT;
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task_info(task, TASK_BASIC_INFO, (task_info_t)&t_info, &t_info_count);
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*rss = t_info.resident_size;
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*vs = t_info.virtual_size;
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}
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class MemoryInfo
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{
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public:
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static size_t Usage(void)
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{
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unsigned long rss, vs, psize;
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task_t task = MACH_PORT_NULL;
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if (task_for_pid(current_task(), getpid(), &task) != KERN_SUCCESS)
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abort();
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getres(task, &rss, &vs);
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return rss;
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}
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};
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#endif // !__APPLE__
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#endif // WIN32
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#endif // MEMORY_USAGE_INCLUDE
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