Ts2phc poll returns zero no events

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August undefined, 2024

WebNov 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" … 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.

eventfd(2) - Linux manual page - Michael Kerrisk

WebJul 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. WebDec 23, 2024 · If timeout is greater than zero, it specifies a maximum interval (in milliseconds) to wait for any file descriptor to become ready. If timeout is zero, then poll () will return without blocking. If the value of timeout is -1, the poll blocks indefinitely. Maximum interval to wait for the poll to complete, in milliseconds. If this value is 0 ... how good is skipping for weight loss

ts2phc(8): Synchronizes one or more PTP Hardware Clocks using exter…

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 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 … WebDec 20, 2024 · If none of the defined events occurs on any selected file descriptor, poll() waits at least timeout milliseconds for an event to occur on any of the selected file descriptors. If the value of timeout is 0, poll() returns immediately. If the value of timeout is -1, poll() blocks until a requested event occurs or until the call is interrupted. highest paid athlete 2016

poll(2) - Linux manual page - Michael Kerrisk

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WebSymmetrically no operation is really necessary for POLLOUT, but you usually want to call the next write () as soon as possible. So as a rule of thumb POLLIN -> read, POLLOUT -> write. You should also reset you pollfd struct before calling poll again. fds [0].fd = sck; fds [0].events = POLLIN; fds [0].revents = 0; ret = poll ( fds, 1, 2000); //2 ... WebIf the value of fd/msgid is less than 0, events is ignored and revents is set to 0 in that entry on return from poll(). In each pollfd structure, poll() clears the revents member except that where the application requested a report on a condition by setting one of the bits of events listed above, poll() sets the corresponding bit in revents if the requested condition is true. how good is sky glass tvWebUser space PTP stack for the GNU/Linux operating system. - linuxptp/ts2phc_pps_sink.c at master · richardcochran/linuxptp how good is simparica trio for dogs

"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. " - Ts2phc poll returns zero no events

Ts2phc poll returns zero no events

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

WebAug 30, 2024 · Previous changes/clarifications to ts2phc have established that: - a PPS sink deals with extts events - a clock deals with synchronization via a servo loop. Therefore, … 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 ...

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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 … WebJul 26, 2024 · I'm using a framework which I give a socket to and it will call my callback if there is data to be read (or if timeout). However it keeps calling me as fast as my cpu can handle although there is no data to be read from the socket. [pid 16586] poll ( [ {fd=16, events=POLLIN}, {fd=17, events=POLLIN}], 2, 1000) = 2 ( [ {fd=16, revents=POLLIN ...

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 ... WebJul 16, 2014 · For pipes and sockets, it depends on the operating system. Linux sets POLLHUP when the program on the writing end of a pipe closes the pipe, and sets POLLIN POLLHUP when the other end of a socket closed the socket, but POLLIN only for a socket shutdown. Recent *BSD set POLLIN POLLUP when the writing end of a pipe closes …

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

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. highest paid athlete 2022WebContribute to kontron/linuxptp development by creating an account on GitHub. how good is smartsaverWebIf it returns 0, then the event will be dropped from the queue, but the internal state will still be updated. This allows selective filtering of dynamically arriving events. ... (e.g. pressing Ctrl-C), it will be delivered to the application at the next event poll. There is one caveat when dealing with the SDL_QuitEvent event type. highest paid athleteWebThe 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 … highest paid athlete 2020WebRETURN 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. how good is smartyWebAug 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 … how good is spiderheadWebA 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. how good is smallcase