Commits on Jul 8, 2023

1. libdrgn: improve C string reading efficiency …

   The current C string reading implementation is inefficient, especially for
   low bandwidth remote targets, as it needs to do a separate segment read
   (including a fresh page table lookup) for each character read. A more
   efficient approach is to retain the page table between character reads,
   only discarding it when we hit the null terminator.
   
   Implement this approach by allowing segments to also specify a C string
   reading callback. The callback for page tables will preserve the page
   table iterator while reading characters.
   
   Signed-off-by: Peter Collingbourne <pcc@google.com>

   

   pcc committed Jul 8, 2023
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