1/* 2 * Copyright 2014 The WebRTC Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11#import "ARDUtilities.h" 12 13#import <mach/mach.h> 14 15#import <WebRTC/RTCLogging.h> 16 17@implementation NSDictionary (ARDUtilites) 18 19+ (NSDictionary *)dictionaryWithJSONString:(NSString *)jsonString { 20 NSParameterAssert(jsonString.length > 0); 21 NSData *data = [jsonString dataUsingEncoding:NSUTF8StringEncoding]; 22 NSError *error = nil; 23 NSDictionary *dict = 24 [NSJSONSerialization JSONObjectWithData:data options:0 error:&error]; 25 if (error) { 26 RTCLogError(@"Error parsing JSON: %@", error.localizedDescription); 27 } 28 return dict; 29} 30 31+ (NSDictionary *)dictionaryWithJSONData:(NSData *)jsonData { 32 NSError *error = nil; 33 NSDictionary *dict = 34 [NSJSONSerialization JSONObjectWithData:jsonData options:0 error:&error]; 35 if (error) { 36 RTCLogError(@"Error parsing JSON: %@", error.localizedDescription); 37 } 38 return dict; 39} 40 41@end 42 43@implementation NSURLConnection (ARDUtilities) 44 45+ (void)sendAsyncRequest:(NSURLRequest *)request 46 completionHandler:(void (^)(NSURLResponse *response, 47 NSData *data, 48 NSError *error))completionHandler { 49 // Kick off an async request which will call back on main thread. 50 NSURLSession *session = [NSURLSession sharedSession]; 51 [[session dataTaskWithRequest:request 52 completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { 53 if (completionHandler) { 54 completionHandler(response, data, error); 55 } 56 }] resume]; 57} 58 59// Posts data to the specified URL. 60+ (void)sendAsyncPostToURL:(NSURL *)url 61 withData:(NSData *)data 62 completionHandler:(void (^)(BOOL succeeded, 63 NSData *data))completionHandler { 64 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; 65 request.HTTPMethod = @"POST"; 66 request.HTTPBody = data; 67 [[self class] sendAsyncRequest:request 68 completionHandler:^(NSURLResponse *response, 69 NSData *data, 70 NSError *error) { 71 if (error) { 72 RTCLogError(@"Error posting data: %@", error.localizedDescription); 73 if (completionHandler) { 74 completionHandler(NO, data); 75 } 76 return; 77 } 78 NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response; 79 if (httpResponse.statusCode != 200) { 80 NSString *serverResponse = data.length > 0 ? 81 [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] : 82 nil; 83 RTCLogError(@"Received bad response: %@", serverResponse); 84 if (completionHandler) { 85 completionHandler(NO, data); 86 } 87 return; 88 } 89 if (completionHandler) { 90 completionHandler(YES, data); 91 } 92 }]; 93} 94 95@end 96 97NSInteger ARDGetCpuUsagePercentage() { 98 // Create an array of thread ports for the current task. 99 const task_t task = mach_task_self(); 100 thread_act_array_t thread_array; 101 mach_msg_type_number_t thread_count; 102 if (task_threads(task, &thread_array, &thread_count) != KERN_SUCCESS) { 103 return -1; 104 } 105 106 // Sum cpu usage from all threads. 107 float cpu_usage_percentage = 0; 108 thread_basic_info_data_t thread_info_data = {}; 109 mach_msg_type_number_t thread_info_count; 110 for (size_t i = 0; i < thread_count; ++i) { 111 thread_info_count = THREAD_BASIC_INFO_COUNT; 112 kern_return_t ret = thread_info(thread_array[i], 113 THREAD_BASIC_INFO, 114 (thread_info_t)&thread_info_data, 115 &thread_info_count); 116 if (ret == KERN_SUCCESS) { 117 cpu_usage_percentage += 118 100.f * (float)thread_info_data.cpu_usage / TH_USAGE_SCALE; 119 } 120 } 121 122 // Dealloc the created array. 123 vm_deallocate(task, (vm_address_t)thread_array, 124 sizeof(thread_act_t) * thread_count); 125 return lroundf(cpu_usage_percentage); 126} 127