获取APP应用内存
//HPMemoryAnalyzer.m
#import <mach/mach.h>
- (int64_t)memoryUsage {
int64_t memoryUsageInByte = 0;
task_vm_info_data_t vmInfo;
mach_msg_type_number_t count = TASK_VM_INFO_COUNT;
kern_return_t kernelReturn = task_info(mach_task_self(), TASK_VM_INFO, (task_info_t) &vmInfo, &count);
if(kernelReturn == KERN_SUCCESS) {
memoryUsageInByte = (int64_t) vmInfo.phys_footprint;
NSLog(@"Memory in use (in bytes): %lld", memoryUsageInByte);
} else {
NSLog(@"Error with task_info(): %s", mach_error_string(kernelReturn));
}
return memoryUsageInByte;
}
vm_size_t getUsedMemory() {
task_basic_info_data_t info;
mach_msg_type_number_t size = sizeof(info);
kern_return_t kerr = task_info(mach_task_self(), TASK_BASIC_INFO, (task_info_t) &info, &size);
if(kerr == KERN_SUCCESS) {
return info.resident_size;
} else {
return 0;
}
}
vm_size_t getFreeMemory() {
mach_port_t host = mach_host_self();
mach_msg_type_number_t size = sizeof(vm_statistics_data_t) / sizeof(integer_t);
vm_size_t pagesize;
vm_statistics_data_t vmstat;
host_page_size(host, &pagesize);
host_statistics(host, HOST_VM_INFO, (host_info_t) &vmstat, &size);
return vmstat.free_count * pagesize;
}
获取CPU占用率
- (float)appCPUUsage {
kern_return_t kr;
task_info_data_t info;
mach_msg_type_number_t infoCount = TASK_INFO_MAX;
kr = task_info(mach_task_self(), TASK_BASIC_INFO, (task_info_t)info, &infoCount);
if (kr != KERN_SUCCESS) {
return -1;
}
thread_array_t thread_list;
mach_msg_type_number_t thread_count;
thread_info_data_t thinfo;
mach_msg_type_number_t thread_info_count;
thread_basic_info_t basic_info_th;
kr = task_threads(mach_task_self(), &thread_list, &thread_count);
if (kr != KERN_SUCCESS) {
return -1;
}
float tot_cpu = 0;
int j;
for (j = 0; j < thread_count; j++) {
thread_info_count = THREAD_INFO_MAX;
kr = thread_info(thread_list[j], THREAD_BASIC_INFO,(thread_info_t)thinfo, &thread_info_count);
if (kr != KERN_SUCCESS) {
return -1;
}
basic_info_th = (thread_basic_info_t)thinfo;
if (!(basic_info_th->flags & TH_FLAGS_IDLE)) {
tot_cpu += basic_info_th->cpu_usage / (float)TH_USAGE_SCALE * 100.0;
}
}
vm_deallocate(mach_task_self(), (vm_offset_t)thread_list,thread_count * sizeof(thread_t));
return tot_cpu;
}