Early aborts (Was: qq failure on HP-UX)
+ Uwe Ohse <[EMAIL PROTECTED]>: | On Wed, Mar 08, 2000 at 05:06:20PM +0100, Harald Hanche-Olsen wrote: | | > <[EMAIL PROTECTED]>: | > crt0: ERROR: mmap failed for dld (data) errno:00012 | > Unable to forward message: qq permanent problem (#5.3.0). | | this can only happen "if ((exitcode >= 11) && (exitcode <= 40))", | which qmail-queue doesn't return in case of "out of memory". I assume this happened before the program entered main(). Which brings up a natural question: What, in general, is supposed to happen if a program is unable to proceed before it enters main(), e.g., because the dynamic loader could not get the memory it needs? Clearly, it is too late for the original process to return from exec(), yet the programmer has no influence over what will happen. For packages like qmail, it is important to recognize the situation so it can be dealt with properly, yet this is clearly impossible unless there is a documented behaviour one can rely on. (My guess would have been that the process should commit suicide rather than just exiting, perhaps by sending itself a SIGSEGV or SIGABRT.) - Harald
Re: Early aborts (Was: qq failure on HP-UX)
On Thu, 9 Mar 2000, Harald Hanche-Olsen wrote: > Which brings up a natural question: What, in general, is supposed to > happen if a program is unable to proceed before it enters main(), > e.g., because the dynamic loader could not get the memory it needs? ... > (My guess would have been that the process should commit suicide > rather than just exiting, perhaps by sending itself a SIGSEGV or > SIGABRT.) Every dynamic linker I know (and I have seen having fatal problems during startup) commits suicide with SIGKILL. This is probably the best thing you can do. --Pavel Kankovsky aka Peak [ Boycott Microsoft--http://www.vcnet.com/bms ] "Resistance is futile. Open your source code and prepare for assimilation."
Re: Early aborts (Was: qq failure on HP-UX)
On Thu, Mar 09, 2000 at 05:57:23PM +0100, Harald Hanche-Olsen wrote: > I assume this happened before the program entered main(). me too. > Which brings up a natural question: What, in general, is supposed to > happen if a program is unable to proceed before it enters main(), 1003.1, 3.2 "Process Termination" There are two kinds of process termination: (1) Normal termination occurs by a return from main() or when requested with the exit() or _exit() functions. (2) Abnormal termination occurs when requested by the abort() function or when some signals are received (see 3.3.1.1). [...] the status made available to wait() or waitpid() by abort() shall be that of a process terminated by the SIGABRT signal. Regards, Uwe
