2024 Ts2phc poll returns zero no events

Ts2phc poll returns zero no events

Author: cegy

August undefined, 2024

WebRETURN VALUE On success, poll() returns a nonnegative value which is the number of elements in the pollfds whose revents fields have been set to a nonzero value (indicating an event or an error). A return value of zero indicates that the system call timed out before any file descriptors became read.

[Linuxptp-devel] [PATCH v6 07/10] ts2phc: split PPS sink poll from ...

WebA tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. WebUser space PTP stack for the GNU/Linux operating system. - linuxptp/ts2phc_pps_sink.c at master · richardcochran/linuxptp dick mcwilliams

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WebJan 30, 2024 · The ts2phc program works (or should work) all by itself. > Command : > ts2phc -f ts2phc.cfg -m -s generic > ts2phc[503.770]: poll returns zero, no events > … WebSep 21, 2024 · The extts events increment normally. The source timestamp jumps 1.907774278 seconds, then 0.195537082 seconds. That is the problem. The source timestamps are produced by this code: /* * Returns the time on the PPS source device at which the most recent * PPS event was generated. WebOct 30, 2024 · This data structure can be created, modified and deleted by three system calls. 1) epoll_create. The epoll instance is created by means of the epoll_create system call, which returns a file descriptor to the epoll instance. The signature of epoll_create is as follows:. #include int epoll_create(int size); The size argument is an … dick meader maine

ptp4l/ts2phc_slave.c at linuxptp-v3.1.relay · microchip-ung/ptp4l

linuxptp/ts2phc_slave.c at master · kontron/linuxptp · GitHub

WebSome of the events may not be applicable to all file types. For example, the POLLPRI event usually is not generated when polling a non-STREAMS character device.POLLIN, POLLRDNORM, POLLRDBAND, and POLLPRI are set even if the message is of zero length.. poll(2) checks each file descriptor for the requested events and, on return, indicates … WebJan 21, 2024 · [Linuxptp-devel] facing problem in running in ts2phc on ubuntu 18.04 Nikhil Gupta Thu, 21 Jan 2024 23:32:57 -0800 Hello, I am facing problem in running ts2phc on … dick meader obituaryWebNov 10, 2024 · When running ts2phc together with a program that reads the PHC (e.g. phc2ys or chrony with a PHC refclock), ts2phc will log "poll returns zero, no events" … dick mcpherson wiki

"WebOn the contrary, if epoll is used too much, epoll will be more efficient_ CTL, the efficiency is still slightly lower. However, once idle connections is used to simulate WAN environment, epoll is far more efficient than selected / poll. 3. Use MMAP to accelerate the message passing between kernel and user space. " - Ts2phc poll returns zero no events

Ts2phc poll returns zero no events

Linux PTP Using PHC Adjust Phase Quick Start Guide - Renesas …

WebNov 23, 2024 · The ts2phc program will introduce clock synchronization which is orthogonal to the direction in which PPS is emitted (from the master to the slave). To have a more consistent terminology, we can avoid using the ultra-generic term "master" and replace it with "PPS source", which describes the role of the data structure in the new interpretation ... WebAug 20, 2024 · Linux PTP Using PHC Adjust Phase Quick Start Guide R31US0007EU0101 Rev.1.01 Aug 20, 2024 Page 4 2. System Requirements Linux PTP v3.0+ Linux kernel …

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WebRETURN VALUE top On success, poll() returns a nonnegative value which is the number of elements in the pollfds whose revents fields have been set to a nonzero value (indicating an event or an error). A return value of zero indicates that the system call timed out before any file descriptors became read. WebThe semantics of read(2) depend on whether the eventfd counter currently has a nonzero value and whether the EFD_SEMAPHORE flag was specified when creating the eventfd file descriptor: * If EFD_SEMAPHORE was not specified and the eventfd counter has a nonzero value, then a read(2) returns 8 bytes containing that value, and the counter's value is reset …

Web[Linuxptp-devel] [PATCH v3 2/2] ts2phc: Add PTP as a source of ToD PTP IEEE 1588 stack for Linux Brought to you by: rcochran. Summary Files Reviews Support Code Mailing Lists WebThe default is 0 (no correction).-1--ts2phc.extts_polarity. The polarity of the external PPS signal, either "rising" or "falling". Some PHC devices always time stamp both edges. …

WebAug 2, 2014 · 2. My application checks for incoming data in a TCP socket by calling poll () with zero timeout. 99% of the time it works fine, when there are data on the socket it sets the POLLIN flag. Sometimes however there are data on the socket (I see the message on wireshark), but poll () returns 0 (timed out) and does not set the POLLIN flag. WebJan 30, 2024 · The ts2phc program works (or should work) all by itself. > Command : > ts2phc -f ts2phc.cfg -m -s generic > ts2phc[503.770]: poll returns zero, no events > …

WebHi, I'm trying to get GPIO Interrrupt functionality working using sysfs and poll calls. The problem appears to be that the poll call is always returnng immediately and is not triggering on the actualy rising edge. I have configured the kernel for this GPIO to be an input which does work correctly. I've also configured the GPIO (114) correctly ...

WebMay 17, 2015 · The poll() function returns a non-zero positive value with no events from the sockets i have registered for. Ask Question Asked 7 years, 9 months ago. Modified 7 … dick meader obituary maineWebContribute to kontron/linuxptp development by creating an account on GitHub. citroen berlingo multispace tailgate awningsWebDec 26, 2024 · poll函数讲解***events revents. poll提供的功能与select类似，不过在处理流设备时，它能够提供额外的信息。. events和revents是通过对代表各种事件的标志进行逻辑或运算构建而成的。. events包括要监视的事件，poll用已经发生的事件填充revents。. poll函数通过在revents中 ... citroen berlingo multispace tyre sizeWebA tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. dick meadows awardWebJul 8, 2015 · later in code is written: ret = poll (pfd, 5, 0); With this I am able to receive data from all 5 sockets, and it is working. Functions is returning if socket received data. Problem occurs when I try to send data. I try to add in events POLLOUT and wait that poll function give me that socket is ready for sending. dick mcpherson football coachWebRETURN VALUE top On success, poll() returns a nonnegative value which is the number of elements in the pollfds whose revents fields have been set to a nonzero value (indicating … dick meaneyWebA tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. citroen berlingo multispace wheel trims