[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-0.9.9-123-g857bdfd

[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-0.9.9-123-g857bdfd

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- Log -----------------------------------------------------------------
commit 857bdfd1bec07003d3d92aaacf6ba578057324ef
Author: Josh Stone <jistone@redhat.com>
Date:   Tue Aug 11 17:01:35 2009 -0700

    PR10461: Probe identical functions only once
    
    In C++ especially, a function definition in a header may be compiled
    into multiple CUs, but the linker will merge those into a single output
    function.  We don't want to place multiple probes on the same function.
    
    The dupe-detection from the alias code (commit 1c6b77e5) already tracks
    identical functions within a CU, so I've just lifted this to instead
    track function entrypcs at the module level.
    
    * dwflpp.cxx (dwflpp::iterate_over_functions): Remove dupe checks.
    * tapsets.cxx (dwarf_query): Add alias_dupes set to the query.
      (dwarf_query::handle_query_module): Reset the dupes for each module.
      (query_dwarf_func): Check that we only probe each entrypc once.

commit 9922bd3d9ce58712cf570abefbafebaf3f407ffe
Author: Josh Stone <jistone@redhat.com>
Date:   Tue Aug 11 14:59:41 2009 -0700

    Don't call dwarf_lowpc after dwarf_entrypc fails
    
    The implementation of dwarf_entrypc already checks for _lowpc, so it's
    redundant for us to attempt a _lowpc call too.
    
    * dwflpp.cxx (dwflpp::function_entrypc): Remove XXX comment.
      (dwflpp::die_entrypc): Don't bother with _lowpc if _entrypc fails

-----------------------------------------------------------------------

Summary of changes:
 dwflpp.cxx  |   17 -----------------
 tapsets.cxx |   14 ++++++++++++++
 2 files changed, 14 insertions(+), 17 deletions(-)


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