“GLib-ERROR **: Cannot create pipe main loop wake-up: Too many open files” on Qt

问题

I am working on Ubuntu. When I run my program about after 1 hour I received this error :

GLib-ERROR **: Cannot create pipe main loop wake-up: Too many open files The program has unexpectedly finished.

When I run with gdb it does not crash.

I Don't understand why? and What is the reason for this error ?

Thank you very much..

回答1:

Too many open files

Is pretty obvious. Probalby you have a leak with file descriptors, so you should check if your code opens lots of files/filedescriptors but doesn't close them properly. If you fork a process, you should also consider to close them, before you start the actual process, as this might also be a common mistake.

The operating system has a limited table of how many filedescreptors it can maintain, and apparently you exceeded this limit.

来源：https://stackoverflow.com/questions/17969804/glib-error-cannot-create-pipe-main-loop-wake-up-too-many-open-files-on-qt