ulog | lightweight logging for embedded microcontrollers
kandi X-RAY | ulog Summary
kandi X-RAY | ulog Summary
uLog provides a structured logging mechanism for embedded microcontrollers or any system with limited resources. It inherits the some concepts behind the popular Log4c and Log4j platforms, but with lower overhead.
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QUESTION
I'd like to use the built-in compiler checks to verify format strings of a custom logging framework to catch the odd runtime crash due to mismatching format string <-> parameters in advance.
Arguments of the custom C++ logging methods are identical to the printf() family so I was attempting to replace all calls to
ANSWER
Answered 2021-Oct-21 at 16:39What if you modify MyLogger::Error to
QUESTION
I am using fseek and fread on a FILE * like this:
...ANSWER
Answered 2021-Aug-20 at 15:09If the question is on C++ as one of the tags imply,
There's typically no way to tell if the pointer dangles, i.e., points to memory that no longer holds the object the pointer is supposed to point to.
from Effective Modern C++, in the introduction to Chapter 4 - Smart Pointers, page 117.
If it's on C, then from the comments we know the same point holds for C.
As regards _Placeholder=0x00000000 when it doesn't work vs _Placeholder=0x1bc715bf when it works, I'm not sure why the numbers (which are memory addresses, I believe) are those that you see; maybe _Placeholder=0x00000000 means that something in the program has set the pointer to nullptr, but the point is that once that (or something else which invalidates the pointer) has happened, you can't do anything to query it.
The only way to go about this is to surrender to the evidence that the program has a bug that results in undefined behavior and try to debug it.
QUESTION
I'm trying to use the pytest -k option to filter out specific tests. The filter does not work and returns an error when it contains a forward slash "/". I tried backslash escaping it with one and two backslashes but still the same error. Any idea how to do this?
...ANSWER
Answered 2021-Jul-23 at 15:50-k is (somewhat intentionally) inflexible -- it is not meant to allow all inputs for matching.
that said, there are two ways to do what you want:
- adjust your
-kexpression slightly:pytest -k 'test_pinger and ping_topoA_ADI_US_PLEAFS_L0_ipv4' - use the test id directly (this appears to be what you're attempting anyway):
pytest 'tools/test_pinger.py::test_pinger[pingtrace/ADI/ping_topoA_ADI_US_PLEAFS_L0_ipv4.yml]'
disclaimer: I'm a pytest core dev
QUESTION
As in title. Var channel keeps being null even if channel's id is correct.
...ANSWER
Answered 2021-Mar-15 at 13:09I have no clue why, but skipping SocketChannel and IMessageChannel declarations worked:
QUESTION
My JavaScript code below appears to be working but it is just that the returned API response output is appearing twice. I'd like it to appear only one time.
My guess is that perhaps it is my incorrect use of the success_callback, but I'm not sure how to modify that to get it to work properly. I'm also not sure if I'm making two requests to the API or if it's just a case where the returned response is getting output twice.
Here's my code. What's causing this and how do I correct it?
...ANSWER
Answered 2021-Jan-26 at 16:05The readystatechange event occurs multiple times during the lifetime of an AJAX request. You need to check httpRequest.readyState to tell if you're at the final response stage. Otherwise you'll call success_callback() multiple times.
QUESTION
I am working on indexing a database on SQL SERVER 2016 with Solr Data Import Handler. I am currently working on solr-8.6.3.
I was initially working on windows 10, in standalone mode, I had configured a schema, solrconfig, and core-data-config (for the dih). I uploaded the *jar file that were necessary to make work the dih.
On windows 10, in localhost there was no problem, the connection to the database was established, the data was collected correctly.
But then I wanted to take solr to production and run solr instance on a Linux host (Debian) using putty from my windows computer. I am beginer in linux but I managed to make my server solr work. I put my *jar file (mssql-jdbc-8.4.1.jre14) in the lib folder in order to make work my DIH.
I create my core with this command :
sudo -u solr /opt/solr-8.6.3/bin/solr create -c name_core -d core-data-configs
But when I try to do the full import nothing happen Request:0 Fetched:0 Skipped:0 Processed:0. But I have no error in my log, no "could not load jdbc driver". My log in solr are empty, nothing suspicious or unusual. But clearly solr doesn't reach my sql server.
Here are the schema:
...ANSWER
Answered 2020-Nov-04 at 13:29In case someone encounter the same probleme I solve it by using the debug mode in Solr. To do so, I added to the solr.in.sh file located in /etc/default :
QUESTION
Transfering code on Postgres to Clickhouse. Need to updating 1 table every week. At Postgres looks like (ON CONFLICT Clause):
...ANSWER
Answered 2020-Sep-14 at 18:43CH does not support ON CONFLICT and will never support. It's against CH (OLAP) db nature. CH just append rows (writes a new part) and could not check rows by key (it will slow down insert to 100000 times).
QUESTION
I am having an issue getting Solr Search setup. I am new to Solr, but I believe the issue is with the solrconfig.xml file. But please tell me if I'm wrong!
The issue is that if I type a search in the q field on the Solr admin page, I get 0 results. However, if I type a wildcard query like *"query"* I'm returning all documents in the database. Here is the solrconfig.xml file I have:
ANSWER
Answered 2020-Mar-02 at 20:16For this to work, Solr provides you with some inbuilt token filters. For your case, i think EdgeNGramFilterFactory and NGramFilterFactory will work, as you need partial tokens to be matched without passing a Regex expression. You can find more about this at this link : https://hostedapachesolr.com/support/partial-word-match-solr-edgengramfilterfactory . You can always configure this filter as per your needs . If you are new to filters in Solr, this part of the documentation may help you https://lucene.apache.org/solr/guide/6_6/understanding-analyzers-tokenizers-and-filters.html .
QUESTION
I wanted to execute who command and cut out the needed info like who | cut -d " " -f 1,21,23 but by using the system() function in c.
I tried doing system("who | cut -d " " -f 1,21,23") which did not work.
The code:
...ANSWER
Answered 2020-Feb-21 at 09:26With "who | cut -d " " -f 1,21,23" you have two strings: "who | cut -d " and " -f 1,21,23". They are concatenated to "who | cut -d -f 1,21,23".
To include double-quotes inside C strings you need to escape them with the backslash: "who | cut -d \" \" -f 1,21,23".
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