Name worker threads using pthread_setname_np

This helps identify threads in gdb particularly in processes with a
lot of threads.

1 files changed, 9 insertions, 8 deletions

diff --git a/rts/sm/GC.c b/rts/sm/GC.c
index dabcd722d7..19d9ab23bc 100644
--- a/rts/sm/GC.c
+++ b/rts/sm/GC.c
@@ -670,6 +670,15 @@ GarbageCollect (nat collect_gen,
   if (major_gc) { gcCAFs(); }
 #endif
 
+  // Update the stable pointer hash table.
+  updateStableTables(major_gc);
+
+  // unlock the StablePtr table.  Must be before scheduleFinalizers(),
+  // because a finalizer may call hs_free_fun_ptr() or
+  // hs_free_stable_ptr(), both of which access the StablePtr table.
+  stableUnlock();
+
+  // Must be after stableUnlock(), because it might free stable ptrs.
   if (major_gc) {
       checkUnload (gct->scavenged_static_objects);
   }
@@ -696,14 +705,6 @@ GarbageCollect (nat collect_gen,
       }
   }
 
-  // Update the stable pointer hash table.
-  updateStableTables(major_gc);
-
-  // unlock the StablePtr table.  Must be before scheduleFinalizers(),
-  // because a finalizer may call hs_free_fun_ptr() or
-  // hs_free_stable_ptr(), both of which access the StablePtr table.
-  stableUnlock();
-
   // Start any pending finalizers.  Must be after
   // updateStableTables() and stableUnlock() (see #4221).
   RELEASE_SM_LOCK;