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// processinfo_darwin.cpp
/* Copyright 2009 10gen Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "mongo/pch.h"
#include "processinfo.h"
#include "log.h"
#include <db/jsobj.h>
#include <mach/vm_statistics.h>
#include <mach/task_info.h>
#include <mach/mach_init.h>
#include <mach/mach_host.h>
#include <mach/mach_traps.h>
#include <mach/task.h>
#include <mach/vm_map.h>
#include <mach/shared_region.h>
#include <iostream>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/sysctl.h>
using namespace std;
namespace mongo {
ProcessInfo::ProcessInfo( ProcessId pid ) : _pid( pid ) {
}
ProcessInfo::~ProcessInfo() {
}
bool ProcessInfo::supported() {
return true;
}
int ProcessInfo::getVirtualMemorySize() {
task_t result;
mach_port_t task;
if ((result = task_for_pid(mach_task_self(), _pid.toNative(), &task)) != KERN_SUCCESS) {
cout << "error getting task\n";
return 0;
}
#if !defined(__LP64__)
task_basic_info_32 ti;
#else
task_basic_info_64 ti;
#endif
mach_msg_type_number_t count = TASK_BASIC_INFO_COUNT;
if ( ( result = task_info( task , TASK_BASIC_INFO , (task_info_t)&ti, &count ) ) != KERN_SUCCESS ) {
cout << "error getting task_info: " << result << endl;
return 0;
}
return (int)((double)ti.virtual_size / (1024.0 * 1024 ) );
}
int ProcessInfo::getResidentSize() {
task_t result;
mach_port_t task;
if ((result = task_for_pid(mach_task_self(), _pid.toNative(), &task)) != KERN_SUCCESS) {
cout << "error getting task\n";
return 0;
}
#if !defined(__LP64__)
task_basic_info_32 ti;
#else
task_basic_info_64 ti;
#endif
mach_msg_type_number_t count = TASK_BASIC_INFO_COUNT;
if ( ( result = task_info( task , TASK_BASIC_INFO , (task_info_t)&ti, &count ) ) != KERN_SUCCESS ) {
cout << "error getting task_info: " << result << endl;
return 0;
}
return (int)( ti.resident_size / (1024 * 1024 ) );
}
void ProcessInfo::getExtraInfo(BSONObjBuilder& info) {
struct task_events_info taskInfo;
mach_msg_type_number_t taskInfoCount = TASK_EVENTS_INFO_COUNT;
if ( KERN_SUCCESS != task_info(mach_task_self(), TASK_EVENTS_INFO,
(integer_t*)&taskInfo, &taskInfoCount) ) {
cout << "error getting extra task_info" << endl;
return;
}
info.append("page_faults", taskInfo.pageins);
}
/**
* Get a sysctl string value by name. Use string specialization by default.
*/
typedef long long NumberVal;
template <typename Variant>
Variant getSysctlByName( const char * sysctlName ) {
string value;
size_t len;
int status;
// NB: sysctlbyname is called once to determine the buffer length, and once to copy
// the sysctl value. Retry if the buffer length grows between calls.
do {
status = sysctlbyname(sysctlName, NULL, &len, NULL, 0);
if (status == -1)
break;
value.resize(len);
status = sysctlbyname(sysctlName, &*value.begin(), &len, NULL, 0);
} while (status == -1 && errno == ENOMEM);
if (status == -1) {
// unrecoverable error from sysctlbyname
log() << sysctlName << " unavailable" << endl;
return "";
}
value.resize(len);
return value;
}
/**
* Get a sysctl integer value by name (specialization)
*/
template <>
long long getSysctlByName< NumberVal > ( const char * sysctlName ) {
long long value = 0;
size_t len = sizeof(value);
if ( sysctlbyname(sysctlName, &value, &len, NULL, 0) < 0 ) {
log() << "Unable to resolve sysctl " << sysctlName << " (number) " << endl;
}
if (len > 8) {
log() << "Unable to resolve sysctl " << sysctlName << " as integer. System returned " << len << " bytes." << endl;
}
return value;
}
void ProcessInfo::SystemInfo::collectSystemInfo() {
osType = "Darwin";
osName = "Mac OS X";
osVersion = getSysctlByName< string >( "kern.osrelease");
addrSize = (getSysctlByName< NumberVal >( "hw.cpu64bit_capable" ) ? 64 : 32);
memSize = getSysctlByName< NumberVal >( "hw.memsize" );
numCores = getSysctlByName< NumberVal >( "hw.ncpu" ); // includes hyperthreading cores
pageSize = static_cast<unsigned long long>(sysconf( _SC_PAGESIZE ));
cpuArch = getSysctlByName< string >( "hw.machine" );
hasNuma = checkNumaEnabled();
BSONObjBuilder bExtra;
bExtra.append( "versionString", getSysctlByName< string >( "kern.version" ) );
bExtra.append( "alwaysFullSync", static_cast< int >( getSysctlByName< NumberVal >( "vfs.generic.always_do_fullfsync" ) ) );
bExtra.append( "nfsAsync", static_cast< int >( getSysctlByName< NumberVal >( "vfs.generic.nfs.client.allow_async" ) ) );
bExtra.append( "model", getSysctlByName< string >( "hw.model" ) );
bExtra.append( "physicalCores", static_cast< int >( getSysctlByName< NumberVal >( "machdep.cpu.core_count" ) ) );
bExtra.append( "cpuFrequencyMHz", static_cast< int >( (getSysctlByName< NumberVal >( "hw.cpufrequency" ) / (1000 * 1000)) ) );
bExtra.append( "cpuString", getSysctlByName< string >( "machdep.cpu.brand_string" ) );
bExtra.append( "cpuFeatures", getSysctlByName< string >( "machdep.cpu.features" ) + string(" ") +
getSysctlByName< string >( "machdep.cpu.extfeatures" ) );
bExtra.append( "pageSize", static_cast< int >( getSysctlByName< NumberVal >( "hw.pagesize" ) ) );
bExtra.append( "scheduler", getSysctlByName< string >( "kern.sched" ) );
_extraStats = bExtra.obj();
}
bool ProcessInfo::checkNumaEnabled() {
return false;
}
bool ProcessInfo::blockCheckSupported() {
return true;
}
bool ProcessInfo::blockInMemory(const void* start) {
char x = 0;
if (mincore(alignToStartOfPage(start), getPageSize(), &x)) {
log() << "mincore failed: " << errnoWithDescription() << endl;
return 1;
}
return x & 0x1;
}
bool ProcessInfo::pagesInMemory(const void* start, size_t numPages, vector<char>* out) {
out->resize(numPages);
if (mincore(alignToStartOfPage(start), numPages * getPageSize(), &out->front())) {
log() << "mincore failed: " << errnoWithDescription() << endl;
return false;
}
for (size_t i = 0; i < numPages; ++i) {
(*out)[i] &= 0x1;
}
return true;
}
}
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