Messages in this thread | | | Subject | Re: [PATCH] Prevent OOM from killing init | Date | Thu, 22 Mar 2001 23:43:57 +0000 (GMT) | From | Alan Cox <> |
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> >How do you return an out of memory error to a C program that is out of memory > >due to a stack growth fault. There is actually not a language construct for it > SIGSEGV. > Stack overflow for a language like C using standard implementation techniques > is the same as a page fault while accessing a page for which there is no backing > store. SIGSEGV is the logical choice, and the one I'd expect on other Unices.
Guess again. You are expanding the stack because you have no room left on it. You take a fault. You want to report a SIGSEGV. Now where are you going to put the stack frame ?
SIGSEGV in combination with a preallocated alternate stack maybe, but then you still need to recover. C++ you can maybe do it with exception handling but C doesnt really have the structure and longjmp just doesnt cut it.
Alan
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