--- a/hotspot/src/share/vm/prims/methodHandles.cpp Thu Sep 08 10:12:25 2011 +0200
+++ b/hotspot/src/share/vm/prims/methodHandles.cpp Thu Sep 08 05:11:31 2011 -0700
@@ -3081,6 +3081,30 @@
}
JVM_END
+JVM_ENTRY(void, MHN_setCallSiteTargetNormal(JNIEnv* env, jobject igcls, jobject call_site_jh, jobject target_jh)) {
+ oop call_site = JNIHandles::resolve_non_null(call_site_jh);
+ oop target = JNIHandles::resolve(target_jh);
+ {
+ // Walk all nmethods depending on this call site.
+ MutexLocker mu(Compile_lock, thread);
+ Universe::flush_dependents_on(call_site, target);
+ }
+ java_lang_invoke_CallSite::set_target(call_site, target);
+}
+JVM_END
+
+JVM_ENTRY(void, MHN_setCallSiteTargetVolatile(JNIEnv* env, jobject igcls, jobject call_site_jh, jobject target_jh)) {
+ oop call_site = JNIHandles::resolve_non_null(call_site_jh);
+ oop target = JNIHandles::resolve(target_jh);
+ {
+ // Walk all nmethods depending on this call site.
+ MutexLocker mu(Compile_lock, thread);
+ Universe::flush_dependents_on(call_site, target);
+ }
+ java_lang_invoke_CallSite::set_target_volatile(call_site, target);
+}
+JVM_END
+
methodOop MethodHandles::resolve_raise_exception_method(TRAPS) {
if (_raise_exception_method != NULL) {
// no need to do it twice
@@ -3137,12 +3161,15 @@
/// JVM_RegisterMethodHandleMethods
+#undef CS // Solaris builds complain
+
#define LANG "Ljava/lang/"
#define JLINV "Ljava/lang/invoke/"
#define OBJ LANG"Object;"
#define CLS LANG"Class;"
#define STRG LANG"String;"
+#define CS JLINV"CallSite;"
#define MT JLINV"MethodType;"
#define MH JLINV"MethodHandle;"
#define MEM JLINV"MemberName;"
@@ -3153,29 +3180,34 @@
#define CC (char*) /*cast a literal from (const char*)*/
#define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f)
-// These are the native methods on sun.invoke.MethodHandleNatives.
+// These are the native methods on java.lang.invoke.MethodHandleNatives.
static JNINativeMethod methods[] = {
// void init(MemberName self, AccessibleObject ref)
- {CC"init", CC"("AMH""MH"I)V", FN_PTR(MHN_init_AMH)},
- {CC"init", CC"("BMH""OBJ"I)V", FN_PTR(MHN_init_BMH)},
- {CC"init", CC"("DMH""OBJ"Z"CLS")V", FN_PTR(MHN_init_DMH)},
- {CC"init", CC"("MT")V", FN_PTR(MHN_init_MT)},
- {CC"init", CC"("MEM""OBJ")V", FN_PTR(MHN_init_Mem)},
- {CC"expand", CC"("MEM")V", FN_PTR(MHN_expand_Mem)},
- {CC"resolve", CC"("MEM""CLS")V", FN_PTR(MHN_resolve_Mem)},
- {CC"getTarget", CC"("MH"I)"OBJ, FN_PTR(MHN_getTarget)},
- {CC"getConstant", CC"(I)I", FN_PTR(MHN_getConstant)},
+ {CC"init", CC"("AMH""MH"I)V", FN_PTR(MHN_init_AMH)},
+ {CC"init", CC"("BMH""OBJ"I)V", FN_PTR(MHN_init_BMH)},
+ {CC"init", CC"("DMH""OBJ"Z"CLS")V", FN_PTR(MHN_init_DMH)},
+ {CC"init", CC"("MT")V", FN_PTR(MHN_init_MT)},
+ {CC"init", CC"("MEM""OBJ")V", FN_PTR(MHN_init_Mem)},
+ {CC"expand", CC"("MEM")V", FN_PTR(MHN_expand_Mem)},
+ {CC"resolve", CC"("MEM""CLS")V", FN_PTR(MHN_resolve_Mem)},
+ {CC"getTarget", CC"("MH"I)"OBJ, FN_PTR(MHN_getTarget)},
+ {CC"getConstant", CC"(I)I", FN_PTR(MHN_getConstant)},
// static native int getNamedCon(int which, Object[] name)
- {CC"getNamedCon", CC"(I["OBJ")I", FN_PTR(MHN_getNamedCon)},
+ {CC"getNamedCon", CC"(I["OBJ")I", FN_PTR(MHN_getNamedCon)},
// static native int getMembers(Class<?> defc, String matchName, String matchSig,
// int matchFlags, Class<?> caller, int skip, MemberName[] results);
- {CC"getMembers", CC"("CLS""STRG""STRG"I"CLS"I["MEM")I", FN_PTR(MHN_getMembers)}
+ {CC"getMembers", CC"("CLS""STRG""STRG"I"CLS"I["MEM")I", FN_PTR(MHN_getMembers)}
+};
+
+static JNINativeMethod call_site_methods[] = {
+ {CC"setCallSiteTargetNormal", CC"("CS""MH")V", FN_PTR(MHN_setCallSiteTargetNormal)},
+ {CC"setCallSiteTargetVolatile", CC"("CS""MH")V", FN_PTR(MHN_setCallSiteTargetVolatile)}
};
static JNINativeMethod invoke_methods[] = {
// void init(MemberName self, AccessibleObject ref)
- {CC"invoke", CC"(["OBJ")"OBJ, FN_PTR(MH_invoke_UOE)},
- {CC"invokeExact", CC"(["OBJ")"OBJ, FN_PTR(MH_invokeExact_UOE)}
+ {CC"invoke", CC"(["OBJ")"OBJ, FN_PTR(MH_invoke_UOE)},
+ {CC"invokeExact", CC"(["OBJ")"OBJ, FN_PTR(MH_invokeExact_UOE)}
};
// This one function is exported, used by NativeLookup.
@@ -3188,11 +3220,11 @@
return; // bind nothing
}
+ assert(!MethodHandles::enabled(), "must not be enabled");
bool enable_MH = true;
{
ThreadToNativeFromVM ttnfv(thread);
-
int status = env->RegisterNatives(MHN_class, methods, sizeof(methods)/sizeof(JNINativeMethod));
if (!env->ExceptionOccurred()) {
const char* L_MH_name = (JLINV "MethodHandle");
@@ -3201,11 +3233,16 @@
status = env->RegisterNatives(MH_class, invoke_methods, sizeof(invoke_methods)/sizeof(JNINativeMethod));
}
if (env->ExceptionOccurred()) {
- MethodHandles::set_enabled(false);
warning("JSR 292 method handle code is mismatched to this JVM. Disabling support.");
enable_MH = false;
env->ExceptionClear();
}
+
+ status = env->RegisterNatives(MHN_class, call_site_methods, sizeof(call_site_methods)/sizeof(JNINativeMethod));
+ if (env->ExceptionOccurred()) {
+ // Exception is okay until 7087357
+ env->ExceptionClear();
+ }
}
if (enable_MH) {