软件开发与网站开发的区别,王烨明,安多网站制作,wordpress加入下载标签iPhone-iOS-从应用程序获取CPU使用率有谁知道如何获取应用程序的CPU使用率#xff1f; 绝对有可能#xff0c;因为应用商店中有一些可以显示它的应用程序(活动监视器触摸)。3个解决方案74 votes更新。 这段代码为我工作#xff1a;更新2。thread_list泄漏#xff0c;因此添…iPhone-iOS-从应用程序获取CPU使用率有谁知道如何获取应用程序的CPU使用率 绝对有可能因为应用商店中有一些可以显示它的应用程序(活动监视器触摸)。3个解决方案74 votes更新。 这段代码为我工作更新2。thread_list泄漏因此添加了vm_deallocate#import #import float cpu_usage(){kern_return_t kr;task_info_data_t tinfo;mach_msg_type_number_t task_info_count;task_info_count TASK_INFO_MAX;kr task_info(mach_task_self(), TASK_BASIC_INFO, (task_info_t)tinfo, task_info_count);if (kr ! KERN_SUCCESS) {return -1;}task_basic_info_t basic_info;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;uint32_t stat_thread 0; // Mach threadsbasic_info (task_basic_info_t)tinfo;// get threads in the taskkr task_threads(mach_task_self(), thread_list, thread_count);if (kr ! KERN_SUCCESS) {return -1;}if (thread_count 0)stat_thread thread_count;long tot_sec 0;long tot_usec 0;float tot_cpu 0;int j;for (j 0; j (int)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_sec tot_sec basic_info_th-user_time.seconds basic_info_th-system_time.seconds;tot_usec tot_usec basic_info_th-user_time.microseconds basic_info_th-system_time.microseconds;tot_cpu tot_cpu basic_info_th-cpu_usage / (float)TH_USAGE_SCALE * 100.0;}} // for each threadkr vm_deallocate(mach_task_self(), (vm_offset_t)thread_list, thread_count * sizeof(thread_t));assert(kr KERN_SUCCESS);return tot_cpu;}ivanzoid answered 2020-07-09T18:06:54Z8 votes对于Swift 3fileprivate func cpuUsage() - Double {var kr: kern_return_tvar task_info_count: mach_msg_type_number_ttask_info_count mach_msg_type_number_t(TASK_INFO_MAX)var tinfo [integer_t](repeating: 0, count: Int(task_info_count))kr task_info(mach_task_self_, task_flavor_t(TASK_BASIC_INFO), tinfo, task_info_count)if kr ! KERN_SUCCESS {return -1}var thread_list: thread_act_array_t? UnsafeMutablePointer(mutating: [thread_act_t]())var thread_count: mach_msg_type_number_t 0defer {if let thread_list thread_list {vm_deallocate(mach_task_self_, vm_address_t(UnsafePointer(thread_list).pointee), vm_size_t(thread_count))}}kr task_threads(mach_task_self_, thread_list, thread_count)if kr ! KERN_SUCCESS {return -1}var tot_cpu: Double 0if let thread_list thread_list {for j in 0 .. Int(thread_count) {var thread_info_count mach_msg_type_number_t(THREAD_INFO_MAX)var thinfo [integer_t](repeating: 0, count: Int(thread_info_count))kr thread_info(thread_list[j], thread_flavor_t(THREAD_BASIC_INFO),thinfo, thread_info_count)if kr ! KERN_SUCCESS {return -1}let threadBasicInfo convertThreadInfoToThreadBasicInfo(thinfo)if threadBasicInfo.flags ! TH_FLAGS_IDLE {tot_cpu (Double(threadBasicInfo.cpu_usage) / Double(TH_USAGE_SCALE)) * 100.0}} // for each thread}return tot_cpu}fileprivate func convertThreadInfoToThreadBasicInfo(_ threadInfo: [integer_t]) - thread_basic_info {var result thread_basic_info()result.user_time time_value_t(seconds: threadInfo[0], microseconds: threadInfo[1])result.system_time time_value_t(seconds: threadInfo[2], microseconds: threadInfo[3])result.cpu_usage threadInfo[4]result.policy threadInfo[5]result.run_state threadInfo[6]result.flags threadInfo[7]result.suspend_count threadInfo[8]result.sleep_time threadInfo[9]return result}Lionking answered 2020-07-09T18:07:14Z0 votes试试这个- (NSString *)cpuUsage{kern_return_t kr;task_info_data_t tinfo;mach_msg_type_number_t task_info_count;task_info_count TASK_INFO_MAX;kr task_info(mach_task_self(), TASK_BASIC_INFO, (task_info_t)tinfo, task_info_count);if (kr ! KERN_SUCCESS){return NA;}task_basic_info_t basic_info;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;uint32_t stat_thread 0; // Mach threadsbasic_info (task_basic_info_t)tinfo;// get threads in the taskkr task_threads(mach_task_self(), thread_list, thread_count);if (kr ! KERN_SUCCESS){return NA;}if (thread_count 0)stat_thread thread_count;long tot_idle 0;long tot_user 0;long tot_kernel 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 nil;}basic_info_th (thread_basic_info_t)thinfo;if (basic_info_th-flags TH_FLAGS_IDLE){//This is idletot_idle tot_idle basic_info_th-user_time.microseconds basic_info_th-system_time.microseconds;} else {//This is usertot_user tot_user basic_info_th-user_time.microseconds;//This is kerneltot_kernel tot_kernel basic_info_th-system_time.microseconds;}} // for each threadkr vm_deallocate(mach_task_self(), (vm_offset_t)thread_list, thread_count * sizeof(thread_t));assert(kr KERN_SUCCESS);long tot_cpu tot_idle tot_user tot_kernelreturn [NSString stringWithFormat:Idle: %.2f, User: %.2f, Kernel: %.2f, tot_idle/tot_cpu, tot_user/tot_cpu, tot_kernel/tot_cpu];}但是该方法会根据每个过程的起点来计算百分比。 如果您正在寻找更传统的方式来计算这些数字请参见Petesh的答案。Coder256 answered 2020-07-09T18:07:39Z
