[PATCH 0/2] libdw: Rewrite the memory handler to be more robust

[Jonathon Anderson <jma14@rice.edu>]

Hello,

This is (revived and rebased) version of the libdw memory manager that 
isn't affected by the PTHREAD_KEYS_MAX limit. There are some downsides, 
in particular if an application spawns many short-lived threads that 
all touch a Dwarf (enough to cause an allocation), there's about ~8N 
bytes of memory overhead.

The first patch is not required and adds some configure-time options 
for Valgrind annotation support (although, I'm not a serious autotools 
user, so it might need some work).

-Jonathon

----------------------------------------------------------------
Jonathon Anderson (2):
      Add configure options for Valgrind annotations.
      libdw: Rewrite the memory handler to be more robust.

 ChangeLog               |  5 +++++
 configure.ac            | 30 ++++++++++++++++++++++++++++++
 lib/atomics.h           |  2 ++
 libdw/ChangeLog         |  9 +++++++++
 libdw/dwarf_begin_elf.c |  7 ++++---
 libdw/dwarf_end.c       | 24 +++++++++++++-----------
 libdw/libdwP.h          | 67 
++++++++++++++++++++++++++++++++-----------------------------------
 libdw/libdw_alloc.c     | 69 
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----
 8 files changed, 160 insertions(+), 53 deletions(-)