[gjs] runtime: sync default GC parameters with Firefox defaults

[Philip Chimento <pchimento src gnome org>]

commit 867c1bbc7db64f96910365f61ad2b21e029e40a1
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Tue Feb 18 17:54:57 2014 +0100

    runtime: sync default GC parameters with Firefox defaults
    
    Defaults taken from Firefox 27, but they are probably good
    for Firefox 24 too.
    gnome-shell might want to have different defaults, because
    10ms of incremental GC slice is not good for a compositor,
    while 100MB of JS heap to trigger high-frequency GC is not
    ok for a background service.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=724797

 gjs/runtime.cpp |   15 ++++++++++++++-
 1 files changed, 14 insertions(+), 1 deletions(-)
---
diff --git a/gjs/runtime.cpp b/gjs/runtime.cpp
index e69d679..c98b0b6 100644
--- a/gjs/runtime.cpp
+++ b/gjs/runtime.cpp
@@ -299,9 +299,22 @@ gjs_runtime_for_current_thread(void)
         data = g_new0(RuntimeData, 1);
         JS_SetRuntimePrivate(runtime, data);
 
+        // commented are defaults in moz-24
         JS_SetNativeStackQuota(runtime, 1024*1024);
-        JS_SetGCParameter(runtime, JSGC_MAX_BYTES, 0xffffffff);
+        JS_SetGCParameter(runtime, JSGC_MAX_MALLOC_BYTES, 128*1024*1024);
+        JS_SetGCParameter(runtime, JSGC_MAX_BYTES, -1);
         JS_SetGCParameter(runtime, JSGC_MODE, JSGC_MODE_INCREMENTAL);
+        JS_SetGCParameter(runtime, JSGC_SLICE_TIME_BUDGET, 10); /* ms */
+        // JS_SetGCParameter(runtime, JSGC_HIGH_FREQUENCY_TIME_LIMIT, 1000); /* ms */
+        JS_SetGCParameter(runtime, JSGC_DYNAMIC_MARK_SLICE, true);
+        JS_SetGCParameter(runtime, JSGC_DYNAMIC_HEAP_GROWTH, true);
+        // JS_SetGCParameter(runtime, JSGC_LOW_FREQUENCY_HEAP_GROWTH, 150);
+        // JS_SetGCParameter(runtime, JSGC_HIGH_FREQUENCY_HEAP_GROWTH_MIN, 150);
+        // JS_SetGCParameter(runtime, JSGC_HIGH_FREQUENCY_HEAP_GROWTH_MAX, 300);
+        // JS_SetGCParameter(runtime, JSGC_HIGH_FREQUENCY_LOW_LIMIT, 100);
+        // JS_SetGCParameter(runtime, JSGC_HIGH_FREQUENCY_HIGH_LIMIT, 500);
+        // JS_SetGCParameter(runtime, JSGC_ALLOCATION_THRESHOLD, 30);
+        // JS_SetGCParameter(runtime, JSGC_DECOMMIT_THRESHOLD, 32);
         JS_SetLocaleCallbacks(runtime, &gjs_locale_callbacks);
         JS_AddFinalizeCallback(runtime, gjs_finalize_callback, data);
         JS_SetErrorReporter(runtime, gjs_error_reporter);