Re: [COMMIT] NEWGC: handle memory shortage

With this patch, the allocator is informed about memory shortage and then allocates only the needed pages and no larger blocks. This may keep XEmacs alive until the garbage collector can free enough memory and recovers from the memory exhaustion. If the recovery is not pssible, XEmacs aborts rather than printing "memory full" in a loop.

+/* malloc calls this if it finds we are near exhausting storage */ +void +malloc_warning (const char *str) +{ + if (ignore_malloc_warnings) + return; + + /* Remove the malloc lock here, because warn_when_safe may allocate + again. It is safe to remove the malloc lock here, because malloc + is already finished (malloc_warning is called via + after_morecore_hook -> check_memory_limits -> save_warn_fun -> + malloc_warning). */ + MALLOC_END ();