Hi Pijush,
[Note: your question is off-topic for the GCC-help forum. Questions for this forum are regarding GCC in particular, not general C++ questions, not PThread questions, not Linux questions, not Solaris questions, not other library questions (except where those things are interacting with GCC in particular). Having said that...]
Don't do any I/O inside a signal handler.
Don't call any OS API routines inside a signal handler.
Don't call any non-re-entrant routines inside a signal handler.
If you access any global variables inside a signal handler, makes sure those variables are marked "volatile".
Don't do "too much work" inside a signal handler.
There's probably a few more caveats using signal handlers. That's just off the top of my head.
HTH, --Eljay
