scratch/ns/refactor 3a26de2: Fix thread memory management under NS

[Alan Third]

branch: scratch/ns/refactor
commit 3a26de2fd3e77e1ba32a0639aa9920247e42eefb
Author: Alan Third <alan@idiocy.org>
Commit: Alan Third <alan@idiocy.org>

    Fix thread memory management under NS
    
    * src/thread.c (run_thread): Allocate an autorelease pool so that any
    autoreleased Objective C objects are correctly released.
---
 src/thread.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/thread.c b/src/thread.c
index f74f611..714b1cd 100644
--- a/src/thread.c
+++ b/src/thread.c
@@ -28,6 +28,10 @@ along with GNU Emacs.  If not, see 
<https://www.gnu.org/licenses/>.  */
 #include "pdumper.h"
 #include "keyboard.h"
 
+#ifdef HAVE_NS
+#include "nsterm.h"
+#endif
+
 #if defined HAVE_GLIB && ! defined (HAVE_NS)
 #include <xgselect.h>
 #else
@@ -735,6 +739,15 @@ run_thread (void *state)
   struct thread_state *self = state;
   struct thread_state **iter;
 
+#ifdef HAVE_NS
+  /* Allocate an autorelease pool in case this thread calls any
+     Objective C code.
+
+     FIXME: In long running threads we may want to drain the pool
+     regularly instead of just at the end.  */
+  void *pool = ns_alloc_autorelease_pool ();
+#endif
+
   self->m_stack_bottom = self->stack_top = &stack_pos.c;
   self->thread_id = sys_thread_self ();
 
@@ -777,6 +790,10 @@ run_thread (void *state)
   current_thread = NULL;
   sys_cond_broadcast (&self->thread_condvar);
 
+#ifdef HAVE_NS
+  ns_release_autorelease_pool (pool);
+#endif
+
   /* Unlink this thread from the list of all threads.  Note that we
      have to do this very late, after broadcasting our death.
      Otherwise the GC may decide to reap the thread_state object,