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https://github.com/Cockatrice/Cockatrice.git
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113 lines
2.5 KiB
C++
113 lines
2.5 KiB
C++
#include "system_memory_querier.h"
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#ifdef Q_OS_WIN
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#include <windows.h>
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#endif
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#ifdef Q_OS_LINUX
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#include <QFile>
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#include <QRegularExpression>
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#include <QTextStream>
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#endif
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#ifdef Q_OS_MACOS
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#include <mach/mach.h>
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#include <sys/sysctl.h>
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#include <sys/types.h>
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#include <unistd.h>
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#endif
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qulonglong SystemMemoryQuerier::totalMemoryBytes()
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{
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#if defined(Q_OS_WIN)
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MEMORYSTATUSEX statex;
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statex.dwLength = sizeof(statex);
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if (GlobalMemoryStatusEx(&statex))
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return statex.ullTotalPhys;
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return 0;
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#elif defined(Q_OS_LINUX)
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QFile file("/proc/meminfo");
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if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
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return 0;
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QTextStream in(&file);
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while (!in.atEnd()) {
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QString line = in.readLine();
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if (line.startsWith("MemTotal:")) {
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#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
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QStringList parts = line.split(QRegExp("\\s+"), QString::SkipEmptyParts);
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#else
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QStringList parts = line.split(QRegularExpression("\\s+"), Qt::SkipEmptyParts);
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#endif
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if (parts.size() >= 2)
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return parts[1].toULongLong() * 1024; // kB → bytes
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}
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}
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return 0;
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#elif defined(Q_OS_MACOS)
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int mib[2] = {CTL_HW, HW_MEMSIZE};
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qulonglong memsize = 0;
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size_t len = sizeof(memsize);
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if (sysctl(mib, 2, &memsize, &len, nullptr, 0) == 0)
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return memsize;
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return 0;
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#else
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return 0;
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#endif
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}
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qulonglong SystemMemoryQuerier::availableMemoryBytes()
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{
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#if defined(Q_OS_WIN)
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MEMORYSTATUSEX statex;
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statex.dwLength = sizeof(statex);
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if (GlobalMemoryStatusEx(&statex))
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return statex.ullAvailPhys;
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return 0;
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#elif defined(Q_OS_LINUX)
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QFile file("/proc/meminfo");
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if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
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return 0;
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QTextStream in(&file);
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while (!in.atEnd()) {
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QString line = in.readLine();
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if (line.startsWith("MemAvailable:")) {
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QStringList parts = line.split(QRegExp("\\s+"), Qt::SkipEmptyParts);
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if (parts.size() >= 2)
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return parts[1].toULongLong() * 1024;
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}
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}
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return 0;
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#elif defined(Q_OS_MACOS)
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vm_size_t pageSize;
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host_page_size(mach_host_self(), &pageSize);
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mach_msg_type_number_t count = HOST_VM_INFO_COUNT;
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vm_statistics64_data_t vmstat;
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if (host_statistics64(mach_host_self(), HOST_VM_INFO, (host_info64_t)&vmstat, &count) != KERN_SUCCESS)
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return 0;
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qulonglong freeBytes = (qulonglong)vmstat.free_count * (qulonglong)pageSize;
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return freeBytes;
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#else
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return 0;
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#endif
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}
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