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Questions tagged [libevent]

libevent is an API for writing event driven systems. libevent is written in C and should compile on Linux, *BSD, Mac OS X, Solaris and Windows.

From the Homepage: Libevent

libevent is meant to replace the event loop found in event driven network servers. An application just needs to call event_dispatch() and then add or remove events dynamically without having to change the event loop.

Currently, libevent supports /dev/poll, kqueue(2), event ports, select(2), poll(2) and epoll(4). The internal event mechanism is completely independent of the exposed event API, and a simple update of libevent can provide new functionality without having to redesign the applications. As a result, Libevent allows for portable application development and provides the most scalable event notification mechanism available on an operating system. Libevent can also be used for multi-threaded applications; see Steven Grimm's explanation. Libevent should compile on Linux, *BSD, Mac OS X, Solaris and Windows.

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How do I write unit tests for an event driven application managed by libevent?

I'm writing an event driven application using the libevent library for asynchronous I/O. Essentially, the application has an evconnlistener listening for data on a port. On receiving data, the data is forwarded to a corresponding http REST end point…
sanjivr
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Callback to member function using libevent

I am trying to pass a member function to libevent which should be treated as a callback. #include class A { public: void eventcb(evutil_socket_t fd, short events, void *ctx) { } }; static void global_eventcb(evutil_socket_t…
Alexander Olsson
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can anyone explain to me how bufferevent ( in libevent) works for non-blocking sockets?

The documentation for libevent 2.0 isn't easy to understand. Can anyone point me to a tutorial?
BeeBand
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comparing livuv, libevent or other implementations

We are currently using epoll based implementation on Linux. We plan to port our software to mac and hence looking for platform independent approach. I looked at libevent2 and libuv, both seem to be fitting our requirement. However, I would like to…
Rahul
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MPI and libevent mixed code causes Segmentation fault on Ubuntu

I have a simple C program reproduces a recent problem I encountered. /* filename: a.c */ #include #include int main(int argc, char *argv[]) { MPI_Init(&argc, &argv); event_init(); MPI_Finalize(); } The…
Wei Zhong
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How to use libusb with libevent?

I'm writing an event-driven application using libevent, and I need to do a USB transfer using libusb-1.0. I wanted to use libusb_get_pollfds to get a list of files descriptors (in fds) and add them to libevent like this: const struct libusb_pollfd…
Pawel Zubrycki
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Error while loading shared libraries: libevent-2.0.so.5

After upgrade ubuntu 16 to 18. I got this error when execute tmux tmux: error while loading shared libraries: libevent-2.0.so.5: cannot open shared object file: No such file or directory and here's result when I execute ldd $(which…
Sastra Nababan
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how can I reduce cpu usage in a golang tcp server?

I try to implement a golang tcp server, and I found the concurrency is satisfied for me, but the CPU usage is too high(concurrency is 15W+/s, but the CPU usage is about 800% in a 24 cores linux machine). At the same time, a C++ tcp server is only…
E.SHEN
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How to install PgBouncer on Windows 7 (x64)

I am attempting to install PgBouncer on my computer with no success. In the installation page, im told that PgBouncer has two dependencies GNU Make 3.81+ and libevent 2.0. Never having used or heard of these two software before, Im completely…
Hozeis
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how to install c++ library libuv on OS X?

i want to install libuv on OS X,but when i brew install libuv then i write a simple demo : #include #include int main() { uv_loop_t *loop = uv_loop_new(); printf(“Now quitting.\n”); uv_run(loop, UV_RUN_DEFAULT); …
Leviathan
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Memcached: error while loading shared libraries: libevent-2.0.so.5: cannot open shared object file

Situation: I installed memcached on a CenTOS 5 (64 bit). I also ended up installing some PHP plugins using PECL, though they're unnecessary now. Problem:When I execute /etc/init.d/memcached start I get the following error: Starting memcached:…
Abhishek
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CMake 'no rule to make target' with external library

I am trying link one of my programs to libevent. I am using CMake as build system. My project structure is as follows: my_project ├── CMakeLists.txt ├── README.md ├── build │  └── Build stuff └── software ├── README.md ├── CMakeLists.txt …
Faas
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How to install libevent on Windows?

I'm using Ratchet on Windows Server 2012. I'd like to have Ratchet use libevent. I have completed the following two things: Using MinGW, I built libevent from source and got three DLLs:…
Boyan Georgiev
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OpenSSL SSL_shutdown received signal SIGPIPE, Broken pipe

I'm writing a http/https client using openssl-0.9.8e I get error when I call SSL_read() then, I call SSL_get_error get SSL_ERROR_SYSCALL and errno ECONNRESET 104 /* Connection reset by peer */ accoring to SSL documetation that's what it…
user3282867
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Libevent: multithreading to handle HTTP keep-alive connections

I am writing an HTTP reverse-proxy in C using Libevent and I would like to implement multithreading to make use of all available CPU cores. I had a look at this example:…
SlappyTheFish
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