All Questions
24,245
questions
1
vote
0
answers
40
views
TOMS 748 - "the bounds given must bracket a single root"?
I have a cubic equation f(x)=0 which I need to solve numerically to within some tolerance.
I already have values a and b such that f(a) and f(b) have opposite signs; i.e. the interval [a,b] is known ...
- 71k
0
votes
0
answers
16
views
[boost::ext]sml understanding how the transition table syntax works
I play around a bit with [boost::ext]sml
The question is not how I can create and run state machines, it looks easy. But I want to know HOW this machinery is implemented and how it can work with the ...
- 25.3k
-1
votes
0
answers
43
views
How to debug hanging notify_all() call in linux [closed]
I have an incidence where notify_all() does not seem to exit properly. Based on this answer notify_all() should return in any case.
I have producer code in the following form:
void producer() {
...
1
vote
1
answer
31
views
HippoMocks: mocking boost::chrono::steady_clock::now
I have some code:
boost::system::error_code clock_error;
const boost::chrono::steady_clock::time_point START =
boost::chrono::steady_clock::now(clock_error);
and I want to mock the now() function so ...
- 21
0
votes
0
answers
36
views
Correct use of boost notify_all in interprocess communication on linux kernels [duplicate]
tl;dr should boost notify_all() be used before or after releasing the lock?
Wikipedia has this comment on signal (in my view similar to broadcast):
it is often also acceptable to release the lock ...
1
vote
1
answer
20
views
boost::mysql error on destroying the connection object
I'm using Boost.MySQL library from the boost packages for c++. I have encountered an error when creating and destroying a database connection using local io_context and ssl_contexts.
Please see the ...
- 1,033
1
vote
1
answer
46
views
How to match strings having optional group and not containing specific group?
How to match the following cases with regex:
XYZABC
ABC
but not these:
XYZ*ABC
*ABC
in order to capture the ABC part, which can be anything, including a (second) *?
I've tried the following, but it ...
- 448
1
vote
1
answer
50
views
C++ incomplete type used in nested name specifier when using boost::multi_index
I have the following files:
"declaration.hpp"
namespace ns {
class Derived;
using DerivedPtr = std::unique_ptr<Derived>;
}
"Base.hpp"
namespace ns {
class User;
...
- 289
1
vote
1
answer
90
views
How can decrease time of creating and insert in boost::interprocess::map?
In the below code I unpack a msgpack file to std::map. The duration of this process is almost 85 seconds.
#include <map>
#include <vector>
#include <string>
#include <iostream>
...
- 190
-3
votes
0
answers
37
views
Memory Leaks found in boost logger C++ [duplicate]
I have a client/server app, I'm using Dr.Memory to debug and find mem leaks. The issue is that there are too many from the logger i've created for my application. Find the minimum reproducible example ...
- 1,033
-1
votes
0
answers
62
views
Segmentation fault in Debug mode with boost::system::error_code
I had a task to investigate bug (segmentation fault) in our component that happened when it was compiled in Debug mode (component worked when compiled in Release mode). I found the problem in ...
- 57
0
votes
0
answers
61
views
Invalid Heap Arguments errors when using components from Boost Libraries in C++?
I'm using many boost libraries in my software application and After running a test case with Dr. Memory here there are 81 Invalid Heap argument errors mostly emitted from boost::log library and its ...
- 1,033
1
vote
1
answer
29
views
Boost trivial log - custom severity name
I am using the boost trivial log with the default severity levels and I would like to map custom text for those default severity levels (e.g. instead of warning use warn).
In my formatter I use <&...
- 1,145
1
vote
1
answer
45
views
boost::process::async_pipe or pipe for inter process communication
I need to do inter process messaging with named pipes.
I know async_pipe can be used for named pipe's.
But when i try to use async_pipe my program just stuck in io_context::run() on read
Why is ...
- 529
1
vote
0
answers
69
views
Boost.Cobalt: how to use channels from a C API callback?
I want to use a C API in a pipeline of coroutines communicating through channels.
This is my first try with coroutines and my knowledge of them is limited.
The shape of the pipeline is:
-------- 1 ...
- 11