From bb91f035a17e258490a75e47997fa98527394ba4 Mon Sep 17 00:00:00 2001
From: Jonas Echterhoff <jonas@unity3d.com>
Date: Fri, 27 Jul 2018 18:11:03 +0300
Subject: [PATCH] New API to stop and start the GC world externally (part of
 commits 39e14be, 05e3377 from Unity-Technologies/bdwgc)

Issue #173 (bdwgc).

* include/gc.h (GC_stop_world_external, GC_start_world_external):
Declare new API function.
* misc.c (GC_stop_world_external, GC_start_world_external): Implement.
---
 include/gc.h |  3 +++
 misc.c       | 12 ++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/include/gc.h b/include/gc.h
index 1c5308e..0a4ee50 100644
--- a/include/gc.h
+++ b/include/gc.h
@@ -2042,6 +2042,9 @@ GC_API void GC_CALL GC_win32_free_heap(void);
         (*GC_amiga_allocwrapper_do)(a,GC_malloc_atomic_ignore_off_page)
 #endif /* _AMIGA && !GC_AMIGA_MAKINGLIB */
 
+GC_API void GC_CALL GC_stop_world_external(void);
+GC_API void GC_CALL GC_start_world_external(void);
+
 #ifdef __cplusplus
   } /* extern "C" */
 #endif
diff --git a/misc.c b/misc.c
index 2ae2606..a597a0a 100644
--- a/misc.c
+++ b/misc.c
@@ -2528,3 +2528,15 @@ GC_API void GC_CALL GC_abort_on_oom(void)
     GC_err_printf("Insufficient memory for the allocation\n");
     EXIT();
 }
+
+GC_API void GC_CALL GC_stop_world_external(void)
+{
+    LOCK();
+    STOP_WORLD();
+}
+
+GC_API void GC_CALL GC_start_world_external(void)
+{
+    START_WORLD();
+    UNLOCK();
+}
-- 
2.7.4