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6839872: remove implementation inheritance from JSR 292 APIs

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Consolidate runtime support in java.dyn.MethodHandleNatives; include transitional compatibility logic

Reviewed-by: twisti
This commit is contained in:
John R Rose 2011-03-11 22:33:47 -08:00
parent c506cb0e5b
commit 6146dffe45
13 changed files with 308 additions and 123 deletions
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46
hotspot/src/share/vm/prims/nativeLookup.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -107,29 +107,29 @@ extern "C" {
void JNICALL JVM_RegisterPerfMethods(JNIEnv *env, jclass perfclass);
}
static address lookup_special_native(char* jni_name) {
// NB: To ignore the jni prefix and jni postfix strstr is used matching.
if (!JDK_Version::is_gte_jdk14x_version()) {
// These functions only exist for compatibility with 1.3.1 and earlier
// Intercept ObjectOutputStream getPrimitiveFieldValues for faster serialization
if (strstr(jni_name, "Java_java_io_ObjectOutputStream_getPrimitiveFieldValues") != NULL) {
return CAST_FROM_FN_PTR(address, JVM_GetPrimitiveFieldValues);
}
// Intercept ObjectInputStream setPrimitiveFieldValues for faster serialization
if (strstr(jni_name, "Java_java_io_ObjectInputStream_setPrimitiveFieldValues") != NULL) {
return CAST_FROM_FN_PTR(address, JVM_SetPrimitiveFieldValues);
}
}
if (strstr(jni_name, "Java_sun_misc_Unsafe_registerNatives") != NULL) {
return CAST_FROM_FN_PTR(address, JVM_RegisterUnsafeMethods);
}
if (strstr(jni_name, "Java_sun_dyn_MethodHandleNatives_registerNatives") != NULL) {
return CAST_FROM_FN_PTR(address, JVM_RegisterMethodHandleMethods);
}
if (strstr(jni_name, "Java_sun_misc_Perf_registerNatives") != NULL) {
return CAST_FROM_FN_PTR(address, JVM_RegisterPerfMethods);
}
#define CC (char*) /* cast a literal from (const char*) */
#define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f)
static JNINativeMethod lookup_special_native_methods[] = {
// Next two functions only exist for compatibility with 1.3.1 and earlier.
{ CC"Java_java_io_ObjectOutputStream_getPrimitiveFieldValues", NULL, FN_PTR(JVM_GetPrimitiveFieldValues) }, // intercept ObjectOutputStream getPrimitiveFieldValues for faster serialization
{ CC"Java_java_io_ObjectInputStream_setPrimitiveFieldValues", NULL, FN_PTR(JVM_SetPrimitiveFieldValues) }, // intercept ObjectInputStream setPrimitiveFieldValues for faster serialization
{ CC"Java_sun_misc_Unsafe_registerNatives", NULL, FN_PTR(JVM_RegisterUnsafeMethods) },
{ CC"Java_sun_dyn_MethodHandleNatives_registerNatives", NULL, FN_PTR(JVM_RegisterMethodHandleMethods) }, // AllowTransitionalJSR292
{ CC"Java_java_dyn_MethodHandleNatives_registerNatives", NULL, FN_PTR(JVM_RegisterMethodHandleMethods) }, // AllowTransitionalJSR292
{ CC"Java_sun_misc_Perf_registerNatives", NULL, FN_PTR(JVM_RegisterPerfMethods) }
};
static address lookup_special_native(char* jni_name) {
int i = !JDK_Version::is_gte_jdk14x_version() ? 0 : 2; // see comment in lookup_special_native_methods
int count = sizeof(lookup_special_native_methods) / sizeof(JNINativeMethod);
for (; i < count; i++) {
// NB: To ignore the jni prefix and jni postfix strstr is used matching.
if (strstr(jni_name, lookup_special_native_methods[i].name) != NULL) {
return CAST_FROM_FN_PTR(address, lookup_special_native_methods[i].fnPtr);
}
}
return NULL;
}