ios获取内存使用, 这个才是准的

最新推荐文章于 2021-12-27 17:28:19 发布

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最新推荐文章于 2021-12-27 17:28:19 发布

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分类专栏： ios 文章标签： ios

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ios获取内存使用, 这个才是准的

- (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): %f M", memoryUsageInByte / 1024.0f / 1024.0f);
    } else {
        NSLog(@"Error with task_info(): %s", mach_error_string(kernelReturn));
    }
    return memoryUsageInByte;
}