gjs/gjs-Add-API-to-force-GC-schedule.patch

From 090298512b12e76929bf8bd14dccbfd355f78dce Mon Sep 17 00:00:00 2001
From: Georges Basile Stavracas Neto <georges.stavracas@gmail.com>
Date: Fri, 30 Mar 2018 21:37:37 -0300
Subject: [PATCH] context: Add API to force GC schedule

There are situations where we cannot run the
GC right away, but we also cannot ignore the
need of running it.

For those cases, add a new private function
that forces GC to happen on idle.
---
 gjs/context-private.h |  2 ++
 gjs/context.cpp       | 29 +++++++++++++++++++++++++----
 2 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/gjs/context-private.h b/gjs/context-private.h
index 6dbe669..c45c8d0 100644
--- a/gjs/context-private.h
+++ b/gjs/context-private.h
@@ -36,6 +36,8 @@ bool         _gjs_context_destroying                  (GjsContext *js_context);
 
 void         _gjs_context_schedule_gc_if_needed       (GjsContext *js_context);
 
+void _gjs_context_schedule_gc (GjsContext *js_context);
+
 void _gjs_context_exit(GjsContext *js_context,
                        uint8_t     exit_code);
 
diff --git a/gjs/context.cpp b/gjs/context.cpp
index c509943..77d7eaa 100644
--- a/gjs/context.cpp
+++ b/gjs/context.cpp
@@ -90,6 +90,7 @@ struct _GjsContext {
     uint8_t exit_code;
 
     guint    auto_gc_id;
+    bool     force_gc;
 
     std::array<JS::PersistentRootedId*, GJS_STRING_LAST> const_strings;
 
@@ -592,22 +593,42 @@ trigger_gc_if_needed (gpointer user_data)
 {
     GjsContext *js_context = GJS_CONTEXT(user_data);
     js_context->auto_gc_id = 0;
-    gjs_gc_if_needed(js_context->context);
+
+    if (js_context->force_gc)
+        JS_GC(js_context->context);
+    else
+        gjs_gc_if_needed(js_context->context);
+
     return G_SOURCE_REMOVE;
 }
 
-void
-_gjs_context_schedule_gc_if_needed (GjsContext *js_context)
+
+static void
+_gjs_context_schedule_gc_internal (GjsContext *js_context,
+                                   bool        force_gc)
 {
     if (js_context->auto_gc_id > 0)
-        return;
+        g_source_remove(js_context->auto_gc_id);
 
+    js_context->force_gc = force_gc;
     js_context->auto_gc_id = g_idle_add_full(G_PRIORITY_LOW,
                                              trigger_gc_if_needed,
                                              js_context, NULL);
 }
 
 void
+_gjs_context_schedule_gc (GjsContext *js_context)
+{
+    _gjs_context_schedule_gc_internal(js_context, true);
+}
+
+void
+_gjs_context_schedule_gc_if_needed (GjsContext *js_context)
+{
+    _gjs_context_schedule_gc_internal(js_context, false);
+}
+
+void
 _gjs_context_exit(GjsContext *js_context,
                   uint8_t     exit_code)
 {
--
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