Ts2phc poll returns zero no events

Author: faso

August undefined, 2024

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. 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. …

poll () ingores incoming data when called with 0 timeout

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 … 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 ... dwayne copenhaver

openil_linuxptp/ts2phc_slave.c at master - Github

WebContribute to kontron/linuxptp development by creating an account on GitHub. 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" … crystal engraved heart

c - What does poll() do with a timeout of 0? - Stack Overflow

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 ... 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. crystal engraved photoWebIf 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. crystal engraved ornament

"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 … " - Ts2phc poll returns zero no events

Ts2phc poll returns zero no events

c - What does poll() do with a timeout of 0? - Stack Overflow

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 … WebThe default is 0.0. ts2phc.nmea_remote_host, ts2phc.nmea_remote_port. Specifies the serial port character device providing ToD information when using the "nmea" PPS signal …

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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 ... WebIf 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.

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 … 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, …

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 ... 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.

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 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 > … crystal engraved clocksWebRETURN 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. crystal engraving dubaiWebA 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. crystal english to spanishWebRETURN 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 … dwayne collins texasWebNov 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 ... dwayne comic-conWebJan 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 > … crystal engraved wine glassesWebDec 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 ... crystal enloe facebook