Map std semaphores from probe->addr

Each probe needs to know the associated semaphore address, rather than
the other way around.

* session.h (sdt_semaphore_addr): Reverse the key-value types.
* tapsets.cxx (record_semaphore): Take an index to only record the
  semaphore for newly added results.
  (sdt_query::handle_query_module): Adjust accordingly.
  (uprobe_derived_probe_group::emit_module_decls): Now it's a simple map
  lookup for sdt_sem_address.
* tapset-utrace.cxx (utrace_derived_probe_group::emit_probe_decl): Ditto.

1 files changed, 1 insertions, 1 deletions

diff --git a/session.h b/session.h
index 4f509714..760b610a 100644
--- a/session.h
+++ b/session.h
@@ -223,7 +223,7 @@ struct systemtap_session
 
 
   // Location of semaphores to activate sdt probes
-  std::map<Dwarf_Addr, derived_probe*> sdt_semaphore_addr;
+  std::map<derived_probe*, Dwarf_Addr> sdt_semaphore_addr;
 
   // NB: It is very important for all of the above (and below) fields
   // to be cleared in the systemtap_session ctor (elaborate.cxx)