author | coleenp |
Tue, 14 May 2019 11:29:18 -0400 | |
changeset 54847 | 59ea39bb2809 |
parent 50113 | caf115bb98ad |
permissions | -rw-r--r-- |
50113 | 1 |
/* |
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8223657: Remove unused THREAD argument from SymbolTable functions
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* Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#include "precompiled.hpp" |
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#include "classfile/javaClasses.hpp" |
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#include "classfile/symbolTable.hpp" |
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#include "classfile/systemDictionary.hpp" |
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#include "jfr/jni/jfrJavaSupport.hpp" |
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#include "jfr/jni/jfrUpcalls.hpp" |
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#include "jfr/support/jfrEventClass.hpp" |
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#include "logging/log.hpp" |
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#include "memory/oopFactory.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "oops/typeArrayKlass.hpp" |
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#include "oops/typeArrayOop.inline.hpp" |
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#include "runtime/handles.inline.hpp" |
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#include "runtime/os.hpp" |
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#include "runtime/thread.inline.hpp" |
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#include "utilities/exceptions.hpp" |
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static Symbol* jvm_upcalls_class_sym = NULL; |
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static Symbol* on_retransform_method_sym = NULL; |
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static Symbol* on_retransform_signature_sym = NULL; |
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static Symbol* bytes_for_eager_instrumentation_sym = NULL; |
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static Symbol* bytes_for_eager_instrumentation_sig_sym = NULL; |
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static bool initialize(TRAPS) { |
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static bool initialized = false; |
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if (!initialized) { |
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DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD)); |
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54847
59ea39bb2809
8223657: Remove unused THREAD argument from SymbolTable functions
coleenp
parents:
50113
diff
changeset
|
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jvm_upcalls_class_sym = SymbolTable::new_permanent_symbol("jdk/jfr/internal/JVMUpcalls"); |
59ea39bb2809
8223657: Remove unused THREAD argument from SymbolTable functions
coleenp
parents:
50113
diff
changeset
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on_retransform_method_sym = SymbolTable::new_permanent_symbol("onRetransform"); |
59ea39bb2809
8223657: Remove unused THREAD argument from SymbolTable functions
coleenp
parents:
50113
diff
changeset
|
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on_retransform_signature_sym = SymbolTable::new_permanent_symbol("(JZLjava/lang/Class;[B)[B"); |
59ea39bb2809
8223657: Remove unused THREAD argument from SymbolTable functions
coleenp
parents:
50113
diff
changeset
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bytes_for_eager_instrumentation_sym = SymbolTable::new_permanent_symbol("bytesForEagerInstrumentation"); |
59ea39bb2809
8223657: Remove unused THREAD argument from SymbolTable functions
coleenp
parents:
50113
diff
changeset
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bytes_for_eager_instrumentation_sig_sym = SymbolTable::new_permanent_symbol("(JZLjava/lang/Class;[B)[B"); |
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initialized = bytes_for_eager_instrumentation_sig_sym != NULL; |
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} |
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return initialized; |
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} |
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static const typeArrayOop invoke(jlong trace_id, |
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jboolean force_instrumentation, |
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jclass class_being_redefined, |
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jint class_data_len, |
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const unsigned char* class_data, |
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Symbol* method_sym, |
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Symbol* signature_sym, |
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jint& new_bytes_length, |
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TRAPS) { |
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DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD)); |
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const Klass* klass = SystemDictionary::resolve_or_fail(jvm_upcalls_class_sym, true, CHECK_NULL); |
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assert(klass != NULL, "invariant"); |
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typeArrayOop old_byte_array = oopFactory::new_byteArray(class_data_len, CHECK_NULL); |
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memcpy(old_byte_array->byte_at_addr(0), class_data, class_data_len); |
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JavaValue result(T_OBJECT); |
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JfrJavaArguments args(&result, klass, method_sym, signature_sym); |
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args.push_long(trace_id); |
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args.push_int(force_instrumentation); |
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args.push_jobject(class_being_redefined); |
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args.push_oop(old_byte_array); |
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JfrJavaSupport::call_static(&args, THREAD); |
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if (HAS_PENDING_EXCEPTION) { |
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log_error(jfr, system)("JfrUpcall failed"); |
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return NULL; |
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} |
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// The result should be a [B |
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const oop res = (oop)result.get_jobject(); |
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assert(res != NULL, "invariant"); |
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assert(res->is_typeArray(), "invariant"); |
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assert(TypeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "invariant"); |
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const typeArrayOop new_byte_array = typeArrayOop(res); |
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new_bytes_length = (jint)new_byte_array->length(); |
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return new_byte_array; |
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} |
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static const size_t ERROR_MSG_BUFFER_SIZE = 256; |
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static void log_error_and_throw_oom(jint new_bytes_length, TRAPS) { |
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char error_buffer[ERROR_MSG_BUFFER_SIZE]; |
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jio_snprintf(error_buffer, ERROR_MSG_BUFFER_SIZE, |
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"Thread local allocation (native) for " SIZE_FORMAT " bytes failed in JfrUpcalls", (size_t)new_bytes_length); |
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log_error(jfr, system)("%s", error_buffer); |
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JfrJavaSupport::throw_out_of_memory_error(error_buffer, CHECK); |
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} |
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void JfrUpcalls::on_retransform(jlong trace_id, |
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jclass class_being_redefined, |
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jint class_data_len, |
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const unsigned char* class_data, |
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jint* new_class_data_len, |
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unsigned char** new_class_data, |
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TRAPS) { |
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DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD)); |
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assert(class_being_redefined != NULL, "invariant"); |
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assert(class_data != NULL, "invariant"); |
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assert(new_class_data_len != NULL, "invariant"); |
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assert(new_class_data != NULL, "invariant"); |
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if (!JdkJfrEvent::is_visible(class_being_redefined)) { |
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return; |
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} |
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jint new_bytes_length = 0; |
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initialize(THREAD); |
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const typeArrayOop new_byte_array = invoke(trace_id, |
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false, |
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class_being_redefined, |
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class_data_len, |
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class_data, |
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on_retransform_method_sym, |
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on_retransform_signature_sym, |
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new_bytes_length, |
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CHECK); |
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assert(new_byte_array != NULL, "invariant"); |
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assert(new_bytes_length > 0, "invariant"); |
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// memory space must be malloced as mtInternal |
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// as it will be deallocated by JVMTI routines |
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unsigned char* const new_bytes = (unsigned char* const)os::malloc(new_bytes_length, mtInternal); |
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if (new_bytes == NULL) { |
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log_error_and_throw_oom(new_bytes_length, THREAD); // unwinds |
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} |
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assert(new_bytes != NULL, "invariant"); |
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memcpy(new_bytes, new_byte_array->byte_at_addr(0), (size_t)new_bytes_length); |
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*new_class_data_len = new_bytes_length; |
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*new_class_data = new_bytes; |
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} |
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void JfrUpcalls::new_bytes_eager_instrumentation(jlong trace_id, |
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jboolean force_instrumentation, |
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jclass super, |
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jint class_data_len, |
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const unsigned char* class_data, |
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jint* new_class_data_len, |
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unsigned char** new_class_data, |
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TRAPS) { |
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DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD)); |
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assert(super != NULL, "invariant"); |
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assert(class_data != NULL, "invariant"); |
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assert(new_class_data_len != NULL, "invariant"); |
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assert(new_class_data != NULL, "invariant"); |
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jint new_bytes_length = 0; |
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initialize(THREAD); |
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const typeArrayOop new_byte_array = invoke(trace_id, |
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force_instrumentation, |
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super, |
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class_data_len, |
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class_data, |
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bytes_for_eager_instrumentation_sym, |
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bytes_for_eager_instrumentation_sig_sym, |
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new_bytes_length, |
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CHECK); |
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assert(new_byte_array != NULL, "invariant"); |
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assert(new_bytes_length > 0, "invariant"); |
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unsigned char* const new_bytes = NEW_RESOURCE_ARRAY_IN_THREAD_RETURN_NULL(THREAD, unsigned char, new_bytes_length); |
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if (new_bytes == NULL) { |
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log_error_and_throw_oom(new_bytes_length, THREAD); // this unwinds |
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} |
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assert(new_bytes != NULL, "invariant"); |
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memcpy(new_bytes, new_byte_array->byte_at_addr(0), (size_t)new_bytes_length); |
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*new_class_data_len = new_bytes_length; |
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*new_class_data = new_bytes; |
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} |