Questions tagged [fifo]
Any structure in which the First object In is the First object Out. Synonyms include queue, and pipe.
fifo
1,135
questions
1
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0
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29
views
Redirecting python script's stdin to fifo results in RuntimeError: input(): lost sys.stdin
I have this python script that's meant to function as a server which reads commands from stdin which is redirected to a fifo:
test.py:
while True:
try:
line = input()
except EOFError:
...
- 706
-1
votes
1
answer
40
views
How to handle the read latency in Async FIFO?
I am using Xilinx FIFO generator core in my project. I have module, say M1, which assersts fifo_rd_en signal to the fifo that i am using. However, the fifo has a read latency of 2 clock cycles. How ...
- 49
-1
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0
answers
38
views
Tomcat: Too many files open. FIFO pipes
I have this problem for a while now with one of my tomcat server running an java application.
When I start the tomcat it slowly starts opening this kind of pipes
java 10329 tomcat 427u a_inode ...
0
votes
0
answers
18
views
How to make Linux FIFO file with template content within?
I want to make a simple web server by using some linux commands like below. I created a fifo file.
$ mkfifo mkfifohtml.txt
Ncat listens at port 8080 then head and cut extracts simply the demanded file....
- 129
0
votes
0
answers
35
views
Why is nodemon specifically causing this "read error: 0: Resource temporarily unavailable" in my bash script when using netcat?
I have written a network client in bash using netcat which streams the stdout of a nodemon process to a remote server. This is my most complicated bash script I have written to date and the past ...
2
votes
0
answers
91
views
Implementing a FIFO allocation between two lists in Python
I am trying to write an algorithm in Python to link quantities in a FIFO fashion between two different series (of length N). The input is two lists, 'instructions' and 'responses'.
The two lists ...
- 299
0
votes
0
answers
33
views
Data Missing in FIFO stream after DMA transfer
We have a DMA design with FIFO stream input.
We let FIFO accumulate the entirety of data stream i.e., 0x8001 depth and width is 32 bit.
Then we cut off the Input stream to FIFO since it is external.
...
- 21
1
vote
0
answers
45
views
Account Aging Strike Out Amount For Vouchers Using
Assume there are 2 tables, 1 is payment and the other is deduction. Now the following query which I got from somewhere gives me following result
DeductionID
DeductionAmount
PaymentID
PaymentAmount
...
0
votes
0
answers
10
views
Unable to read "wr_en, fifo_in" data using module instantiation
Is there anything wrong with my instantiation.
8 to 32 bit converter is working fine.
input to fifo is read only when wr_en is high.
wr_en is connected to output signal of valid_q (when valid_q=1, ...
- 1
1
vote
1
answer
51
views
Script getting stuck in while trying to continuously read from a pipe in a while loop
I am trying to implement a script in which a pipe is getting created and the default value 0 is stored in the pipe. Simultaneously, a c code file is getting executed which based on a condition updates ...
1
vote
2
answers
30
views
How to advance to next song in playlist using Mplayer controlled by a named pipe in Python
I have a python script that controls (via a named pipe) an instance of mplayer in slave mode that's playing MP3s. Everything works as expected, but I can't for the life of me figure out how to advance ...
- 21
0
votes
0
answers
47
views
Reading the 32 Fifo samples from MAX30102 for a 100 samples buffer
I'm using the max30102 sensor and esp32. I'm programming using arduino firmware.
The sensor has a FIFO with 32 samples and I want to read them for a buffer with size of 100 samples.
So I need to read ...
0
votes
1
answer
71
views
Avoid 100% cpu when I read a FIFO file [closed]
I need to read FIFO file, because it's arriving snmp traps in a FIFO file that I need to read and process them sequentially. So I've created a while (true) loop to begin to read lines of FIFO file and ...
- 132
0
votes
1
answer
30
views
ldap 389ds - logging - cat <> stdout-fifo-pipe-file > /dev/stdout - No AUDIT logs 0 byte file
I have a ldap (helm chart) running 389ds container under the hood.
I noticed that in the chart, there's this folder: docker-entrypoint-init.d/ which contains bunch of numbered shell scripts. Example: ...
- 17k
1
vote
2
answers
284
views
Last In First Out (LIFO) transaction row pairing using SQL
I have a transaction table where I am trying to map Outflows to Inflows based on the LIFO.
Input dataset
Id
Date
Type
Amount
1
26-01-2024
Inflow
519
2
26-01-2024
Outflow
100
3
26-01-2024
Outflow
...
