Kandan Venkataraman wrote: > I want to track any pages that have been written to a mmap file using a > segv handler. > > I have given an example program below to illustrate my idea. > > What I want to know is whether the modifications to the mmap file will > be guaranteed to be unaffected by the interruption of the signal > handler, i.e. would the resultant changes in the mmap file be as if the > mmap file had write access set. It seems to work this way on Linux, but that behaviour isn't dictated by any standard. In particular, Unix98 says: The behavior of a process is undefined after it returns normally from a signal-catching function for a SIGBUS, SIGFPE, SIGILL, or SIGSEGV signal that was not generated by kill(), sigqueue(), or raise(). -- Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx> - To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
