[sgen] Enable concurrent major by default on desktop platforms

diff --git a/mono/sgen/sgen-gc.c b/mono/sgen/sgen-gc.c
index 37a162b240c3c44a9957d69a072ea18a6ff20301..560d6e3090b15c66e55e89d121131bc674192bb9 100644 (file)
--- a/mono/sgen/sgen-gc.c
+++ b/mono/sgen/sgen-gc.c
@@ -326,6 +326,15 @@ nursery_canaries_enabled (void)
 
 #define safe_object_get_size   sgen_safe_object_get_size
 
+#if defined(PLATFORM_MACOSX) || defined(HOST_WIN32) || (defined(__linux__) && !defined(PLATFORM_ANDROID))
+/* Use concurrent major on deskstop platforms */
+#define DEFAULT_MAJOR_INIT sgen_marksweep_conc_init
+#define DEFAULT_MAJOR_NAME "marksweep-conc"
+#else
+#define DEFAULT_MAJOR_INIT sgen_marksweep_init
+#define DEFAULT_MAJOR_NAME "marksweep"
+#endif
+
 /*
  * ######################################################################
  * ########  Global data.
@@ -2811,14 +2820,16 @@ sgen_gc_init (void)
                }
        }
 
-       if (!major_collector_opt || !strcmp (major_collector_opt, "marksweep")) {
-       use_marksweep_major:
+       if (!major_collector_opt) {
+       use_default_major:
+               DEFAULT_MAJOR_INIT (&major_collector);
+       } else if (!strcmp (major_collector_opt, "marksweep")) {
                sgen_marksweep_init (&major_collector);
-       } else if (!major_collector_opt || !strcmp (major_collector_opt, "marksweep-conc")) {
+       } else if (!strcmp (major_collector_opt, "marksweep-conc")) {
                sgen_marksweep_conc_init (&major_collector);
        } else {
-               sgen_env_var_error (MONO_GC_PARAMS_NAME, "Using `marksweep` instead.", "Unknown major collector `%s'.", major_collector_opt);
-               goto use_marksweep_major;
+               sgen_env_var_error (MONO_GC_PARAMS_NAME, "Using `" DEFAULT_MAJOR_NAME "` instead.", "Unknown major collector `%s'.", major_collector_opt);
+               goto use_default_major;
        }
 
        sgen_nursery_size = DEFAULT_NURSERY_SIZE;