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/**
* XMPP - libpurple transport
*
* Copyright (C) 2009, Jan Kaluza <hanzz@soc.pidgin.im>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#include "transport/MemoryUsage.h"
#include <iostream>
#include <cstring>
#include <sstream>
#include <fstream>
#include <algorithm>
#include <boost/lexical_cast.hpp>
#ifndef WIN32
#include <sys/param.h>
#else
#include <windows.h>
#include <psapi.h>
#endif
#ifdef __MACH__
#include <mach/mach.h>
#elif BSD
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/user.h>
#endif
namespace Transport {
#ifndef WIN32
#ifdef __MACH__
void process_mem_usage(double& vm_usage, double& resident_set, pid_t pid) {
struct task_basic_info t_info;
mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT;
if (KERN_SUCCESS != task_info(mach_task_self(),
TASK_BASIC_INFO, (task_info_t)&t_info,
&t_info_count)) {
vm_usage = 0;
resident_set = 0;
return;
}
vm_usage = t_info.virtual_size;
resident_set = t_info.resident_size;
}
#elif BSD
void process_mem_usage(double& vm_usage, double& resident_set, pid_t pid) {
int mib[4];
size_t size;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PID;
if (pid == 0) {
mib[3] = getpid();
}
else {
mib[3] = pid;
}
struct kinfo_proc proc;
size = sizeof(struct kinfo_proc);
if (sysctl((int*)mib, 4, &proc, &size, NULL, 0) == -1) {
vm_usage = 0;
resident_set = 0;
return;
}
// sysctl stores 0 in the size if we can't find the process information.
// Set errno to ESRCH which will be translated in NoSuchProcess later on.
if (size == 0) {
vm_usage = 0;
resident_set = 0;
return;
}
int pagesize,cnt;
size = sizeof(pagesize);
sysctlbyname("hw.pagesize", &pagesize, &size, NULL, 0);
resident_set = (double) (proc.ki_rssize * pagesize / 1024);
vm_usage = (double) proc.ki_size;
}
#else /* BSD */
void process_mem_usage(double& shared, double& resident_set, pid_t pid) {
using std::ios_base;
using std::ifstream;
using std::string;
shared = 0.0;
resident_set = 0.0;
// 'file' stat seems to give the most reliable results
std::string f = "/proc/self/statm";
if (pid != 0) {
f = "/proc/" + boost::lexical_cast<std::string>(pid) + "/statm";
}
ifstream stat_stream(f.c_str(), ios_base::in);
if (!stat_stream.is_open()) {
shared = 0;
resident_set = 0;
return;
}
// dummy vars for leading entries in stat that we don't care about
//
string pid1, comm, state, ppid, pgrp, session, tty_nr;
string tpgid, flags, minflt, cminflt, majflt, cmajflt;
string utime, stime, cutime, cstime, priority, nice;
string O, itrealvalue, starttime;
// the two fields we want
//
unsigned long shared_;
long rss;
stat_stream >> O >> rss >> shared_; // don't care about the rest
long page_size_kb = sysconf(_SC_PAGE_SIZE) / 1024; // in case x86-64 is configured to use 2MB pages
shared = shared_ * page_size_kb;
resident_set = rss * page_size_kb;
}
#endif /* else BSD */
#else
#define PSAPI_VERSION 1
#define pid_t void*
void process_mem_usage(double& shared, double& resident_set, pid_t pid) {
PROCESS_MEMORY_COUNTERS_EX pmc;
GetProcessMemoryInfo(GetCurrentProcess(), (PROCESS_MEMORY_COUNTERS*)&pmc, sizeof(pmc));
shared = (double)pmc.PrivateUsage;
resident_set = (double)pmc.WorkingSetSize;
}
#endif /* WIN32 */
}
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