Mercurial > hg > graal-jvmci-8

comparison src/share/vm/prims/whitebox.cpp @ 17817:4abb719c5620

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
8038240: new WB API to get nmethod Reviewed-by: morris, kvn
author iignatyev
date Thu, 27 Mar 2014 11:17:26 +0400
parents a48e16541e6b
children b127b0d6de7f
comparison
equal deleted inserted replaced
17816:3829d0343db0 17817:4abb719c5620
1 /* 1 /*
2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
507 507
508 CHECK_JNI_EXCEPTION_(env, NULL); 508 CHECK_JNI_EXCEPTION_(env, NULL);
509 509
510 return features_string; 510 return features_string;
511 WB_END 511 WB_END
512
513
514 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
515 ResourceMark rm(THREAD);
516 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
517 CHECK_JNI_EXCEPTION_(env, NULL);
518 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
519 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
520 jobjectArray result = NULL;
521 if (code == NULL) {
522 return result;
523 }
524 int insts_size = code->insts_size();
525
526 ThreadToNativeFromVM ttn(thread);
527 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
528 CHECK_JNI_EXCEPTION_(env, NULL);
529 result = env->NewObjectArray(2, clazz, NULL);
530 if (result == NULL) {
531 return result;
532 }
533
534 clazz = env->FindClass(vmSymbols::java_lang_Integer()->as_C_string());
535 CHECK_JNI_EXCEPTION_(env, NULL);
536 jmethodID constructor = env->GetMethodID(clazz, vmSymbols::object_initializer_name()->as_C_string(), vmSymbols::int_void_signature()->as_C_string());
537 CHECK_JNI_EXCEPTION_(env, NULL);
538 jobject obj = env->NewObject(clazz, constructor, code->comp_level());
539 CHECK_JNI_EXCEPTION_(env, NULL);
540 env->SetObjectArrayElement(result, 0, obj);
541
542 jbyteArray insts = env->NewByteArray(insts_size);
543 CHECK_JNI_EXCEPTION_(env, NULL);
544 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
545 env->SetObjectArrayElement(result, 1, insts);
546
547 return result;
548 WB_END
549
512 550
513 //Some convenience methods to deal with objects from java 551 //Some convenience methods to deal with objects from java
514 int WhiteBox::offset_for_field(const char* field_name, oop object, 552 int WhiteBox::offset_for_field(const char* field_name, oop object,
515 Symbol* signature_symbol) { 553 Symbol* signature_symbol) {
516 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 554 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
620 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 658 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
621 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 659 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
622 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 660 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
623 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 661 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
624 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 662 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
663 {CC"getNMethod", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
664 (void*)&WB_GetNMethod },
625 }; 665 };
626 666
627 #undef CC 667 #undef CC
628 668
629 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 669 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))