[release/7.0] [MONO][MARSHAL] Initialize ilgen with a flag (#83813)

* Use flag to initilize ilgen, instead of doing it lazily.

* Formatting.

* Improve variable naming.

* Fix condition.

* Updated name in .h file.

* Updated how wasm inits ilgen.

* Updated wasi driver.

---------

Co-authored-by: Nathan Ricci <naricc@microsoft.com>

src/mono/mono/metadata/marshal-ilgen.c

@@ -2717,13 +2717,7 @@ emit_marshal_variant_ilgen (EmitMarshalContext *m, int argnum, MonoType *t,
 static MonoMarshalIlgenCallbacks *
 get_marshal_cb (void)
 {
-	if (G_UNLIKELY (!ilgen_cb_inited)) {
-#ifdef ENABLE_ILGEN
-		mono_marshal_ilgen_init ();
-#else
-		mono_marshal_noilgen_init_heavyweight ();
-#endif
-	}
+	g_assert(ilgen_cb_inited);
 	return &ilgen_marshal_cb;
 }
 
@@ -2804,7 +2798,7 @@ mono_emit_marshal_ilgen (EmitMarshalContext *m, int argnum, MonoType *t,
 }
 
 void
-mono_marshal_ilgen_init (void)
+mono_marshal_ilgen_init_internal (void)
 {
 	MonoMarshalIlgenCallbacks cb;
 	cb.version = MONO_MARSHAL_CALLBACKS_VERSION;

src/mono/mono/metadata/marshal-ilgen.h

@@ -39,4 +39,8 @@ mono_emit_marshal_ilgen (EmitMarshalContext *m, int argnum, MonoType *t,
 	      MonoMarshalSpec *spec, int conv_arg,
 	      MonoType **conv_arg_type, MarshalAction action,  MonoMarshalLightweightCallbacks* lightweigth_cb);
 
+
+void
+mono_marshal_ilgen_init_internal (void);
+
 #endif // __MARSHAL_ILGEN_H__

src/mono/mono/metadata/marshal-lightweight.c

@@ -68,6 +68,19 @@ get_method_image (MonoMethod *method)
 	return m_class_get_image (method->klass);
 }
 
+static gboolean ilgen_callbacks_requested = FALSE;
+MONO_API void
+mono_marshal_ilgen_init (void)
+{
+  	ilgen_callbacks_requested = TRUE;
+}
+
+gboolean
+mono_marshal_is_ilgen_requested (void)
+{
+	return ilgen_callbacks_requested;
+}
+
 /**
  * mono_mb_strdup:
  * \param mb the MethodBuilder

src/mono/mono/metadata/marshal-lightweight.h

@@ -9,4 +9,7 @@
 MONO_API void
 mono_marshal_lightweight_init (void);
 
+gboolean
+mono_marshal_is_ilgen_requested (void);
+
 #endif // __MONO_MARSHAL_LIGHTWEIGHT_H__

src/mono/mono/metadata/marshal.c

@@ -6254,15 +6254,7 @@ mono_install_marshal_callbacks (MonoMarshalLightweightCallbacks *cb)
 static MonoMarshalLightweightCallbacks *
 get_marshal_cb (void)
 {
-
-	if (G_UNLIKELY (!lightweight_cb_inited)) {
-#ifdef ENABLE_ILGEN
-		mono_marshal_lightweight_init ();
-#else
-		mono_marshal_noilgen_init_lightweight ();
-#endif
-	}
-
+	g_assert (lightweight_cb_inited);
 	return &marshal_lightweight_cb;
 }
 

src/mono/mono/mini/mini-runtime.c

@@ -41,6 +41,7 @@
 #include <mono/metadata/domain-internals.h>
 #include <mono/metadata/profiler-private.h>
 #include <mono/metadata/mono-config.h>
+#include <mono/metadata/marshal-ilgen.h>
 #include <mono/metadata/environment.h>
 #include <mono/metadata/mono-debug.h>
 #include <mono/metadata/gc-internals.h>
@@ -4467,6 +4468,22 @@ mini_init (const char *filename)
 
 	mono_component_event_pipe_100ns_ticks_start ();
 
+
+#ifdef ENABLE_ILGEN
+	mono_marshal_lightweight_init ();
+  	mono_marshal_ilgen_init_internal ();
+#else
+	if (mono_marshal_is_ilgen_requested ())
+  	{
+		mono_marshal_lightweight_init ();
+  		mono_marshal_ilgen_init_internal ();
+ 	}
+	else{
+		mono_marshal_noilgen_init_lightweight();
+		mono_marshal_noilgen_init_heavyweight ();
+	}
+#endif
+
 	MONO_VES_INIT_BEGIN ();
 
 	CHECKED_MONO_INIT ();

src/mono/wasi/mono-wasi-driver/driver.c

@@ -481,7 +481,6 @@ mono_wasm_load_runtime (const char *argv, int debug_level)
 	mono_jit_set_aot_mode (MONO_AOT_MODE_INTERP_ONLY);
 
 	mono_ee_interp_init (interp_opts);
-	mono_marshal_lightweight_init ();
 	mono_marshal_ilgen_init ();
 	mono_method_builder_ilgen_init ();
 	mono_sgen_mono_ilgen_init ();

src/mono/wasm/runtime/driver.c

@@ -55,7 +55,6 @@ int mono_wasm_register_root (char *start, size_t size, const char *name);
 void mono_wasm_deregister_root (char *addr);
 
 void mono_ee_interp_init (const char *opts);
-void mono_marshal_lightweight_init (void);
 void mono_marshal_ilgen_init (void);
 void mono_method_builder_ilgen_init (void);
 void mono_sgen_mono_ilgen_init (void);
@@ -595,7 +594,6 @@ mono_wasm_load_runtime (const char *unused, int debug_level)
 #endif
 #ifdef NEED_INTERP
 	mono_ee_interp_init (interp_opts);
-	mono_marshal_lightweight_init ();
 	mono_marshal_ilgen_init();
 	mono_method_builder_ilgen_init ();
 	mono_sgen_mono_ilgen_init ();