CPU
// CPU总数目
- (NSUInteger)getCPUCount {
return [NSProcessInfo processInfo].activeProcessorCount;
}
// 已使用的CPU比例
- (float)getCPUUsage {
float cpu = 0;
NSArray *cpus = [self getPerCPUUsage];
if (cpus.count == 0) return -1;
for (NSNumber *n in cpus) {
cpu += n.floatValue;
}
return cpu;
}
// 获取每个cpu的使用比例
- (NSArray *)getPerCPUUsage {
processor_info_array_t _cpuInfo, _prevCPUInfo = nil;
mach_msg_type_number_t _numCPUInfo, _numPrevCPUInfo = 0;
unsigned _numCPUs;
NSLock *_cpuUsageLock;
int _mib[2U] = { CTL_HW, HW_NCPU };
size_t _sizeOfNumCPUs = sizeof(_numCPUs);
int _status = sysctl(_mib, 2U, &_numCPUs, &_sizeOfNumCPUs, NULL, 0U);
if (_status)
_numCPUs = 1;
_cpuUsageLock = [[NSLock alloc] init];
natural_t _numCPUsU = 0U;
kern_return_t err = host_processor_info(mach_host_self(), PROCESSOR_CPU_LOAD_INFO, &_numCPUsU, &_cpuInfo, &_numCPUInfo);
if (err == KERN_SUCCESS) {
[_cpuUsageLock lock];
NSMutableArray *cpus = [NSMutableArray new];
for (unsigned i = 0U; i < _numCPUs; ++i) {
Float32 _inUse, _total;
if (_prevCPUInfo) {
_inUse = (
(_cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_USER] - _prevCPUInfo[(CPU_STATE_MAX * i) + CPU_STATE_USER])
+ (_cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_SYSTEM] - _prevCPUInfo[(CPU_STATE_MAX * i) + CPU_STATE_SYSTEM])
+ (_cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_NICE] - _prevCPUInfo[(CPU_STATE_MAX * i) + CPU_STATE_NICE])
);
_total = _inUse + (_cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_IDLE] - _prevCPUInfo[(CPU_STATE_MAX * i) + CPU_STATE_IDLE]);
} else {
_inUse = _cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_USER] + _cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_SYSTEM] + _cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_NICE];
_total = _inUse + _cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_IDLE];
}
[cpus addObject:@(_inUse / _total)];
}
[_cpuUsageLock unlock];
if (_prevCPUInfo) {
size_t prevCpuInfoSize = sizeof(integer_t) * _numPrevCPUInfo;
vm_deallocate(mach_task_self(), (vm_address_t)_prevCPUInfo, prevCpuInfoSize);
}
return cpus;
} else {
return nil;
}
}
Disk磁盘空间
// 获取磁盘总空间
- (int64_t)getTotalDiskSpace {
NSError *error = nil;
NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfFileSystemForPath:NSHomeDirectory() error:&error];
if (error) return -1;
int64_t space = [[attrs objectForKey:NSFileSystemSize] longLongValue];
if (space < 0) space = -1;
return space;
}
// 获取未使用的磁盘空间
- (int64_t)getFreeDiskSpace {
NSError *error = nil;
NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfFileSystemForPath:NSHomeDirectory() error:&error];
if (error) return -1;
int64_t space = [[attrs objectForKey:NSFileSystemFreeSize] longLongValue];
if (space < 0) space = -1;
return space;
}
// 获取已使用的磁盘空间
- (int64_t)getUsedDiskSpace {
int64_t totalDisk = [self getTotalDiskSpace];
int64_t freeDisk = [self getFreeDiskSpace];
if (totalDisk < 0 || freeDisk < 0) return -1;
int64_t usedDisk = totalDisk - freeDisk;
if (usedDisk < 0) usedDisk = -1;
return usedDisk;
}
