监控iPhone应用程序中的内存使用情况？ [英] Monitor memory usage in an iphone app?

问题描述

是否有可能监控您的应用消耗的内存量？

Is it possible to monitor the amount of memory your app is consuming?

推荐答案

实际上，您知道这可能更重要有多少内存是免费的，而不是你的应用程序使用了多少。以下是一些代码：

Actually, it's probably more important you know how much memory is free, rather than how much your app is using. Here's some code to do that:

#import <mach/mach.h>
#import <mach/mach_host.h>

+(natural_t) get_free_memory {
    mach_port_t host_port;
    mach_msg_type_number_t host_size;
    vm_size_t pagesize;
    host_port = mach_host_self();
    host_size = sizeof(vm_statistics_data_t) / sizeof(integer_t);
    host_page_size(host_port, &pagesize);
    vm_statistics_data_t vm_stat;

    if (host_statistics(host_port, HOST_VM_INFO, (host_info_t)&vm_stat, &host_size) != KERN_SUCCESS) {
        NSLog(@"Failed to fetch vm statistics");
        return 0;
    }

    /* Stats in bytes */
    natural_t mem_free = vm_stat.free_count * pagesize;
    return mem_free;
}

这篇关于监控iPhone应用程序中的内存使用情况？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！