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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kControl
#include "mongo/platform/basic.h"
#include "mongo/util/processinfo.h"
#include <boost/none.hpp>
#include <boost/optional.hpp>
#include <mach/mach_init.h>
#include <mach/mach_traps.h>
#include <mach/task.h>
#include <mach/task_info.h>
#include <sys/sysctl.h>
#include <sys/types.h>
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/logv2/log.h"
namespace mongo {
ProcessInfo::ProcessInfo(ProcessId pid) : _pid(pid) {}
ProcessInfo::~ProcessInfo() {}
bool ProcessInfo::supported() {
return true;
}
// get the number of CPUs available to the scheduler
boost::optional<unsigned long> ProcessInfo::getNumCoresForProcess() {
long nprocs = sysconf(_SC_NPROCESSORS_ONLN);
if (nprocs)
return nprocs;
return boost::none;
}
int ProcessInfo::getVirtualMemorySize() {
task_t result;
mach_port_t task;
if ((result = task_for_pid(mach_task_self(), _pid.toNative(), &task)) != KERN_SUCCESS) {
LOGV2(677702, "error getting task");
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) {
LOGV2(677703, "error getting task_info", "result"_attr = result);
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) {
LOGV2(577704, "error getting task");
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) {
LOGV2(677705, "error getting task_info", "result"_attr = result);
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)) {
LOGV2(677706, "error getting extra task_info");
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) {
std::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, nullptr, &len, nullptr, 0);
if (status == -1)
break;
value.resize(len);
status = sysctlbyname(sysctlName, &*value.begin(), &len, nullptr, 0);
} while (status == -1 && errno == ENOMEM);
if (status == -1) {
// unrecoverable error from sysctlbyname
LOGV2(23351, "{sysctlName} unavailable", "sysctlName"_attr = sysctlName);
return "";
}
// Drop any trailing NULL bytes by constructing Variant from a C string.
return value.c_str();
}
/**
* 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, nullptr, 0) < 0) {
LOGV2(23352,
"Unable to resolve sysctl {sysctlName} (number) ",
"sysctlName"_attr = sysctlName);
}
if (len > 8) {
LOGV2(23353,
"Unable to resolve sysctl {sysctlName} as integer. System returned {len} bytes.",
"sysctlName"_attr = sysctlName,
"len"_attr = len);
}
return value;
}
void ProcessInfo::SystemInfo::collectSystemInfo() {
osType = "Darwin";
osName = "Mac OS X";
osVersion = getSysctlByName<std::string>("kern.osrelease");
addrSize = (getSysctlByName<NumberVal>("hw.cpu64bit_capable") ? 64 : 32);
memSize = getSysctlByName<NumberVal>("hw.memsize");
memLimit = memSize;
numCores = getSysctlByName<NumberVal>("hw.ncpu"); // includes hyperthreading cores
pageSize = static_cast<unsigned long long>(sysconf(_SC_PAGESIZE));
cpuArch = getSysctlByName<std::string>("hw.machine");
hasNuma = checkNumaEnabled();
BSONObjBuilder bExtra;
bExtra.append("versionString", getSysctlByName<std::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<std::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<std::string>("machdep.cpu.brand_string"));
bExtra.append("cpuFeatures", getSysctlByName<std::string>("machdep.cpu.features"));
bExtra.append("pageSize", static_cast<int>(getSysctlByName<NumberVal>("hw.pagesize")));
bExtra.append("scheduler", getSysctlByName<std::string>("kern.sched"));
_extraStats = bExtra.obj();
}
bool ProcessInfo::checkNumaEnabled() {
return false;
}
} // namespace mongo
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