WebApr 13, 2024 · 一、前言. 按键、鼠标、键盘、触摸屏等都属于输入 (input)设备,Linux 内核为此专门做了一个叫做 input子系统的框架来处理输入事件。. 输入设备本质上还是字符设备,只是在此基础上套上了 input 框架,用户只需要负责上报输入事件,比如按键值、坐标等信息 ... WebJul 30, 2024 · 2 Answers Sorted by: 1 When you compile with a 32-bit toolchain, the members of struct timeval are 32 bit, and when you compile with a 64-bit toolchain, they're 64 bit. That means that the values you provided are automatically converted to the appropriate type by the compiler, and the data you passed it is of the right size.
sys/time.h - time types - The Open Group
WebMar 18, 2013 · It runs on systems where the maximum data size is 32 bits and ones where it could be 128 bits or more. For 64-bit systems, you want a 64-bit time_t and related types (so that you don't run out of time in 2038), but the systems that C was originally written for couldn't (easily) address data types that large. – rra Mar 18, 2013 at 6:02 Add a comment WebAug 10, 2024 · StructureFieldBitSize.cpp. // I've needed a constexpr way to get a size of the bit fields in struct (i.e. number of bits). // so constexpr functions could only use a single … chimney sweeps west bend wi
TIMEVAL (winsock.h) - Win32 apps Microsoft Learn
WebThe header defines the itimerval structure that includes at least the following members: struct timeval it_interval timer interval struct timeval it_value current value. … WebIn particular, all interfaces returning a ‘struct timeval’ or ‘struct timespec’ have been replaced because the tv_sec member overflows in year 2038 on 32-bit architectures. These are the recommended replacements: void ktime_get_ts (struct timespec *) ¶ Use ktime_get() or ktime_get_ts64() instead. void do_gettimeofday (struct timeval *) ¶ WebJan 11, 2015 · LKML Archive on lore.kernel.org help / color / mirror / Atom feed * [PATCH v2 0/6] irda: Use ktime_t instead of timeval [not found] @ 2015-01-08 4:01 ` Chunyan Zhang 2015-01-08 4:01 ` [PATCH v2 1/6] irda: Removed all unused timeval variables Chunyan Zhang ` (6 more replies) 0 siblings, 7 replies; 8+ messages in thread … grady evans cleveland