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8009763: Add WB test for String.intern()

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Add convenience method in StringTable, add WhiteBox method and simple sanity test

Reviewed-by: mgerdin, zgu
This commit is contained in:
Leonid Mesnik 2013-04-02 11:28:33 +02:00 • committed by Mikael Gerdin
parent 388d803077
commit a4300aa98b
5 changed files with 94 additions and 3 deletions
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20
hotspot/src/share/vm/prims/whitebox.cpp
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@ -254,6 +254,24 @@ WB_ENTRY(jint, WB_GetCompileQueuesSize(JNIEnv* env, jobject o))
CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
WB_END
WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
ResourceMark rm(THREAD);
int len;
jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len);
oop found_string = StringTable::the_table()->lookup(name, len);
if (found_string == NULL) {
return false;
}
return true;
WB_END
WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
Universe::heap()->collect(GCCause::_last_ditch_collection);
WB_END
//Some convenience methods to deal with objects from java
int WhiteBox::offset_for_field(const char* field_name, oop object,
Symbol* signature_symbol) {
@ -343,6 +361,8 @@ static JNINativeMethod methods[] = {
CC"(Ljava/lang/reflect/Method;)I", (void*)&WB_GetMethodCompilationLevel},
{CC"getCompileQueuesSize",
CC"()I", (void*)&WB_GetCompileQueuesSize},
{CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
{CC"fullGC", CC"()V", (void*)&WB_FullGC },
};
#undef CC