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The signal handler is declared after the fork. This is one of the first things that the child processes do after they are invoked. Should this be done before the fork?

Thanks, Tuvia

This is the signal handler function:

static void handle_sigusr1()
{
if (DebugFile!=NULL) {
fwrite(DebugBuff.buff_ptr, DebugBuff.buff_len, 1, DebugFile);
...

Is it ok to use exit() inside a signal handler?
I catch SIGUSR1 in a signal handler and I try to close a file and then exit. The result is inconsistent. Sometimes the process exit and sometimes it...