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8150646: Add support for blocking compiles though whitebox API

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Co-authored-by: Nils Eliasson <nils.eliasson@oracle.com>
Reviewed-by: kvn, ppunegov, simonis, neliasso
This commit is contained in:
Volker Simonis 2016-03-03 16:21:16 +01:00
parent 59193ab336
commit 173a62a8d6
10 changed files with 238 additions and 70 deletions
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29
hotspot/src/share/vm/prims/whitebox.cpp
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@ -30,6 +30,7 @@
#include "classfile/stringTable.hpp"
#include "code/codeCache.hpp"
#include "compiler/methodMatcher.hpp"
#include "compiler/directivesParser.hpp"
#include "jvmtifiles/jvmtiEnv.hpp"
#include "memory/metadataFactory.hpp"
#include "memory/metaspaceShared.hpp"
@ -636,6 +637,10 @@ WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject m
WB_END
WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
// Screen for unavailable/bad comp level
if (CompileBroker::compiler(comp_level) == NULL) {
return false;
}
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
@ -1502,6 +1507,27 @@ void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread,
}
}
WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
// can't be in VM when we call JNI
ThreadToNativeFromVM ttnfv(thread);
const char* dir = env->GetStringUTFChars(compDirect, NULL);
int ret;
{
ThreadInVMfromNative ttvfn(thread); // back to VM
ret = DirectivesParser::parse_string(dir, tty);
}
env->ReleaseStringUTFChars(compDirect, dir);
// -1 for error parsing directive. Return 0 as number of directives added.
if (ret == -1) {
ret = 0;
}
return (jint) ret;
WB_END
WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
DirectivesStack::pop(count);
WB_END
#define CC (char*)
static JNINativeMethod methods[] = {
@ -1677,6 +1703,9 @@ static JNINativeMethod methods[] = {
{CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
{CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
{CC"clearInlineCaches", CC"()V", (void*)&WB_ClearInlineCaches },
{CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
(void*)&WB_AddCompilerDirective },
{CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
};
#undef CC