Mercurial > hg > truffle
view src/share/vm/graal/graalRuntime.cpp @ 8654:3bbad4ec6510
new phase: PushNodesThroughPi
author | Bernhard Urban <bernhard.urban@jku.at> |
---|---|
date | Thu, 04 Apr 2013 16:03:08 +0200 |
parents | c3657d00e343 |
children | bb2447c64055 |
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/* * Copyright (c) 2012, 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 * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ #include "precompiled.hpp" #include "asm/codeBuffer.hpp" #include "graal/graalRuntime.hpp" #include "graal/graalVMToCompiler.hpp" #include "memory/oopFactory.hpp" #include "prims/jvm.h" #include "runtime/biasedLocking.hpp" #include "runtime/interfaceSupport.hpp" #include "utilities/debug.hpp" // Implementation of GraalStubAssembler GraalStubAssembler::GraalStubAssembler(CodeBuffer* code, const char * name, int stub_id) : MacroAssembler(code) { _name = name; _must_gc_arguments = false; _frame_size = no_frame_size; _num_rt_args = 0; _stub_id = stub_id; } void GraalStubAssembler::set_info(const char* name, bool must_gc_arguments) { _name = name; _must_gc_arguments = must_gc_arguments; } void GraalStubAssembler::set_frame_size(int size) { if (_frame_size == no_frame_size) { _frame_size = size; } assert(_frame_size == size, "can't change the frame size"); } void GraalStubAssembler::set_num_rt_args(int args) { if (_num_rt_args == 0) { _num_rt_args = args; } assert(_num_rt_args == args, "can't change the number of args"); } // Implementation of GraalRuntime CodeBlob* GraalRuntime::_blobs[GraalRuntime::number_of_ids]; const char *GraalRuntime::_blob_names[] = { GRAAL_STUBS(STUB_NAME, LAST_STUB_NAME) }; // Simple helper to see if the caller of a runtime stub which // entered the VM has been deoptimized static bool caller_is_deopted() { JavaThread* thread = JavaThread::current(); RegisterMap reg_map(thread, false); frame runtime_frame = thread->last_frame(); frame caller_frame = runtime_frame.sender(®_map); assert(caller_frame.is_compiled_frame(), "must be compiled"); return caller_frame.is_deoptimized_frame(); } // Stress deoptimization static void deopt_caller() { if ( !caller_is_deopted()) { JavaThread* thread = JavaThread::current(); RegisterMap reg_map(thread, false); frame runtime_frame = thread->last_frame(); frame caller_frame = runtime_frame.sender(®_map); Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint); assert(caller_is_deopted(), "Must be deoptimized"); } } static bool setup_code_buffer(CodeBuffer* code) { // Preinitialize the consts section to some large size: int locs_buffer_size = 1 * (relocInfo::length_limit + sizeof(relocInfo)); char* locs_buffer = NEW_RESOURCE_ARRAY(char, locs_buffer_size); code->insts()->initialize_shared_locs((relocInfo*)locs_buffer, locs_buffer_size / sizeof(relocInfo)); // Global stubs have neither constants nor local stubs code->initialize_consts_size(0); code->initialize_stubs_size(0); return true; } void GraalRuntime::generate_blob_for(BufferBlob* buffer_blob, StubID id) { assert(0 <= id && id < number_of_ids, "illegal stub id"); ResourceMark rm; // create code buffer for code storage CodeBuffer code(buffer_blob); setup_code_buffer(&code); // create assembler for code generation GraalStubAssembler* sasm = new GraalStubAssembler(&code, name_for(id), id); // generate code for runtime stub OopMapSet* oop_maps; oop_maps = generate_code_for(id, sasm); assert(oop_maps == NULL || sasm->frame_size() != GraalStubAssembler::no_frame_size, "if stub has an oop map it must have a valid frame size"); #ifdef ASSERT // Make sure that stubs that need oopmaps have them switch (id) { // These stubs don't need to have an oopmap #if defined(SPARC) || defined(PPC) case handle_exception_nofpu_id: // Unused on sparc #endif case verify_oop_id: case unwind_exception_call_id: case OSR_migration_end_id: case arithmetic_frem_id: case arithmetic_drem_id: break; // All other stubs should have oopmaps default: assert(oop_maps != NULL, "must have an oopmap"); } #endif // align so printing shows nop's instead of random code at the end (SimpleStubs are aligned) sasm->align(BytesPerWord); // make sure all code is in code buffer sasm->flush(); // create blob - distinguish a few special cases CodeBlob* blob = RuntimeStub::new_runtime_stub(name_for(id), &code, CodeOffsets::frame_never_safe, sasm->frame_size(), oop_maps, sasm->must_gc_arguments()); // install blob assert(blob != NULL, "blob must exist"); _blobs[id] = blob; } void GraalRuntime::initialize(BufferBlob* blob) { // generate stubs for (int id = 0; id < number_of_ids; id++) generate_blob_for(blob, (StubID)id); // printing #ifndef PRODUCT if (GraalPrintSimpleStubs) { ResourceMark rm; for (int id = 0; id < number_of_ids; id++) { _blobs[id]->print(); if (_blobs[id]->oop_maps() != NULL) { _blobs[id]->oop_maps()->print(); } } } #endif } CodeBlob* GraalRuntime::blob_for(StubID id) { assert(0 <= id && id < number_of_ids, "illegal stub id"); return _blobs[id]; } const char* GraalRuntime::name_for(StubID id) { assert(0 <= id && id < number_of_ids, "illegal stub id"); return _blob_names[id]; } const char* GraalRuntime::name_for_address(address entry) { for (int id = 0; id < number_of_ids; id++) { if (entry == entry_for((StubID)id)) return name_for((StubID)id); } #define FUNCTION_CASE(a, f) \ if ((intptr_t)a == CAST_FROM_FN_PTR(intptr_t, f)) return #f FUNCTION_CASE(entry, os::javaTimeMillis); FUNCTION_CASE(entry, os::javaTimeNanos); FUNCTION_CASE(entry, SharedRuntime::OSR_migration_end); FUNCTION_CASE(entry, SharedRuntime::d2f); FUNCTION_CASE(entry, SharedRuntime::d2i); FUNCTION_CASE(entry, SharedRuntime::d2l); FUNCTION_CASE(entry, SharedRuntime::dcos); FUNCTION_CASE(entry, SharedRuntime::dexp); FUNCTION_CASE(entry, SharedRuntime::dlog); FUNCTION_CASE(entry, SharedRuntime::dlog10); FUNCTION_CASE(entry, SharedRuntime::dpow); FUNCTION_CASE(entry, SharedRuntime::drem); FUNCTION_CASE(entry, SharedRuntime::dsin); FUNCTION_CASE(entry, SharedRuntime::dtan); FUNCTION_CASE(entry, SharedRuntime::f2i); FUNCTION_CASE(entry, SharedRuntime::f2l); FUNCTION_CASE(entry, SharedRuntime::frem); FUNCTION_CASE(entry, SharedRuntime::l2d); FUNCTION_CASE(entry, SharedRuntime::l2f); FUNCTION_CASE(entry, SharedRuntime::ldiv); FUNCTION_CASE(entry, SharedRuntime::lmul); FUNCTION_CASE(entry, SharedRuntime::lrem); FUNCTION_CASE(entry, SharedRuntime::lrem); FUNCTION_CASE(entry, SharedRuntime::dtrace_method_entry); FUNCTION_CASE(entry, SharedRuntime::dtrace_method_exit); #ifdef TRACE_HAVE_INTRINSICS FUNCTION_CASE(entry, TRACE_TIME_METHOD); #endif ShouldNotReachHere(); return NULL; #undef FUNCTION_CASE } JRT_ENTRY(void, GraalRuntime::new_instance(JavaThread* thread, Klass* klass)) assert(klass->is_klass(), "not a class"); instanceKlassHandle h(thread, klass); h->check_valid_for_instantiation(true, CHECK); // make sure klass is initialized h->initialize(CHECK); // allocate instance and return via TLS oop obj = h->allocate_instance(CHECK); thread->set_vm_result(obj); JRT_END JRT_ENTRY(void, GraalRuntime::new_array(JavaThread* thread, Klass* array_klass, jint length)) // Note: no handle for klass needed since they are not used // anymore after new_objArray() and no GC can happen before. // (This may have to change if this code changes!) assert(array_klass->is_klass(), "not a class"); oop obj; if (array_klass->oop_is_typeArray()) { BasicType elt_type = TypeArrayKlass::cast(array_klass)->element_type(); obj = oopFactory::new_typeArray(elt_type, length, CHECK); } else { Klass* elem_klass = ObjArrayKlass::cast(array_klass)->element_klass(); obj = oopFactory::new_objArray(elem_klass, length, CHECK); } thread->set_vm_result(obj); // This is pretty rare but this runtime patch is stressful to deoptimization // if we deoptimize here so force a deopt to stress the path. if (DeoptimizeALot) { deopt_caller(); } JRT_END JRT_ENTRY(void, GraalRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims)) assert(klass->is_klass(), "not a class"); assert(rank >= 1, "rank must be nonzero"); oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK); thread->set_vm_result(obj); JRT_END JRT_ENTRY(void, GraalRuntime::unimplemented_entry(JavaThread* thread, StubID id)) tty->print_cr("GraalRuntime::entry_for(%d) returned unimplemented entry point", id); JRT_END extern void vm_exit(int code); // Enter this method from compiled code handler below. This is where we transition // to VM mode. This is done as a helper routine so that the method called directly // from compiled code does not have to transition to VM. This allows the entry // method to see if the nmethod that we have just looked up a handler for has // been deoptimized while we were in the vm. This simplifies the assembly code // cpu directories. // // We are entering here from exception stub (via the entry method below) // If there is a compiled exception handler in this method, we will continue there; // otherwise we will unwind the stack and continue at the caller of top frame method // Note: we enter in Java using a special JRT wrapper. This wrapper allows us to // control the area where we can allow a safepoint. After we exit the safepoint area we can // check to see if the handler we are going to return is now in a nmethod that has // been deoptimized. If that is the case we return the deopt blob // unpack_with_exception entry instead. This makes life for the exception blob easier // because making that same check and diverting is painful from assembly language. JRT_ENTRY_NO_ASYNC(static address, exception_handler_for_pc_helper(JavaThread* thread, oopDesc* ex, address pc, nmethod*& nm)) // Reset method handle flag. thread->set_is_method_handle_return(false); Handle exception(thread, ex); nm = CodeCache::find_nmethod(pc); assert(nm != NULL, "this is not an nmethod"); // Adjust the pc as needed/ if (nm->is_deopt_pc(pc)) { RegisterMap map(thread, false); frame exception_frame = thread->last_frame().sender(&map); // if the frame isn't deopted then pc must not correspond to the caller of last_frame assert(exception_frame.is_deoptimized_frame(), "must be deopted"); pc = exception_frame.pc(); } #ifdef ASSERT assert(exception.not_null(), "NULL exceptions should be handled by throw_exception"); assert(exception->is_oop(), "just checking"); // Check that exception is a subclass of Throwable, otherwise we have a VerifyError if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { if (ExitVMOnVerifyError) vm_exit(-1); ShouldNotReachHere(); } #endif // Check the stack guard pages and reenable them if necessary and there is // enough space on the stack to do so. Use fast exceptions only if the guard // pages are enabled. bool guard_pages_enabled = thread->stack_yellow_zone_enabled(); if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack(); if (JvmtiExport::can_post_on_exceptions()) { // To ensure correct notification of exception catches and throws // we have to deoptimize here. If we attempted to notify the // catches and throws during this exception lookup it's possible // we could deoptimize on the way out of the VM and end back in // the interpreter at the throw site. This would result in double // notifications since the interpreter would also notify about // these same catches and throws as it unwound the frame. RegisterMap reg_map(thread); frame stub_frame = thread->last_frame(); frame caller_frame = stub_frame.sender(®_map); // We don't really want to deoptimize the nmethod itself since we // can actually continue in the exception handler ourselves but I // don't see an easy way to have the desired effect. Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint); assert(caller_is_deopted(), "Must be deoptimized"); return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); } // ExceptionCache is used only for exceptions at call sites and not for implicit exceptions if (guard_pages_enabled) { address fast_continuation = nm->handler_for_exception_and_pc(exception, pc); if (fast_continuation != NULL) { // Set flag if return address is a method handle call site. thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); return fast_continuation; } } // If the stack guard pages are enabled, check whether there is a handler in // the current method. Otherwise (guard pages disabled), force an unwind and // skip the exception cache update (i.e., just leave continuation==NULL). address continuation = NULL; if (guard_pages_enabled) { // New exception handling mechanism can support inlined methods // with exception handlers since the mappings are from PC to PC // debugging support // tracing if (TraceExceptions) { ttyLocker ttyl; ResourceMark rm; int offset = pc - nm->code_begin(); tty->print_cr("Exception <%s> (0x%x) thrown in compiled method <%s> at PC " PTR_FORMAT " [" PTR_FORMAT "+%d] for thread 0x%x", exception->print_value_string(), (address)exception(), nm->method()->print_value_string(), pc, nm->code_begin(), offset, thread); } // for AbortVMOnException flag NOT_PRODUCT(Exceptions::debug_check_abort(exception)); // Clear out the exception oop and pc since looking up an // exception handler can cause class loading, which might throw an // exception and those fields are expected to be clear during // normal bytecode execution. thread->set_exception_oop(NULL); thread->set_exception_pc(NULL); continuation = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, false, false); // If an exception was thrown during exception dispatch, the exception oop may have changed thread->set_exception_oop(exception()); thread->set_exception_pc(pc); // the exception cache is used only by non-implicit exceptions if (continuation != NULL && !SharedRuntime::deopt_blob()->contains(continuation)) { nm->add_handler_for_exception_and_pc(exception, pc, continuation); } } thread->set_vm_result(exception()); // Set flag if return address is a method handle call site. thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); if (TraceExceptions) { ttyLocker ttyl; ResourceMark rm; tty->print_cr("Thread " PTR_FORMAT " continuing at PC " PTR_FORMAT " for exception thrown at PC " PTR_FORMAT, thread, continuation, pc); } return continuation; JRT_END // Enter this method from compiled code only if there is a Java exception handler // in the method handling the exception. // We are entering here from exception stub. We don't do a normal VM transition here. // We do it in a helper. This is so we can check to see if the nmethod we have just // searched for an exception handler has been deoptimized in the meantime. address GraalRuntime::exception_handler_for_pc(JavaThread* thread) { oop exception = thread->exception_oop(); address pc = thread->exception_pc(); // Still in Java mode DEBUG_ONLY(ResetNoHandleMark rnhm); nmethod* nm = NULL; address continuation = NULL; { // Enter VM mode by calling the helper ResetNoHandleMark rnhm; continuation = exception_handler_for_pc_helper(thread, exception, pc, nm); } // Back in JAVA, use no oops DON'T safepoint // Now check to see if the nmethod we were called from is now deoptimized. // If so we must return to the deopt blob and deoptimize the nmethod if (nm != NULL && caller_is_deopted()) { continuation = SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); } assert(continuation != NULL, "no handler found"); return continuation; } JRT_ENTRY(void, GraalRuntime::create_null_exception(JavaThread* thread)) thread->set_vm_result(Exceptions::new_exception(thread, vmSymbols::java_lang_NullPointerException(), NULL)()); JRT_END JRT_ENTRY(void, GraalRuntime::create_out_of_bounds_exception(JavaThread* thread, jint index)) char message[jintAsStringSize]; sprintf(message, "%d", index); thread->set_vm_result(Exceptions::new_exception(thread, vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), message)()); JRT_END JRT_ENTRY_NO_ASYNC(void, GraalRuntime::monitorenter(JavaThread* thread, oopDesc* obj, BasicLock* lock)) if (TraceGraal >= 3) { char type[O_BUFLEN]; obj->klass()->name()->as_C_string(type, O_BUFLEN); markOop mark = obj->mark(); tty->print_cr("%s: entered locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), obj, type, mark, lock); tty->flush(); } #ifdef ASSERT if (PrintBiasedLockingStatistics) { Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); } #endif Handle h_obj(thread, obj); assert(h_obj()->is_oop(), "must be NULL or an object"); if (UseBiasedLocking) { // Retry fast entry if bias is revoked to avoid unnecessary inflation ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); } else { if (GraalUseFastLocking) { // When using fast locking, the compiled code has already tried the fast case ObjectSynchronizer::slow_enter(h_obj, lock, THREAD); } else { ObjectSynchronizer::fast_enter(h_obj, lock, false, THREAD); } } if (TraceGraal >= 3) { tty->print_cr("%s: exiting locking slow with obj=" INTPTR_FORMAT, thread->name(), obj); } JRT_END JRT_LEAF(void, GraalRuntime::wb_pre_call(JavaThread* thread, oopDesc* obj)) thread->satb_mark_queue().enqueue(obj); JRT_END JRT_LEAF(void, GraalRuntime::wb_post_call(JavaThread* thread, oopDesc* obj, void* card_addr)) thread->dirty_card_queue().enqueue(card_addr); JRT_END JRT_LEAF(void, GraalRuntime::monitorexit(JavaThread* thread, oopDesc* obj, BasicLock* lock)) assert(thread == JavaThread::current(), "threads must correspond"); assert(thread->last_Java_sp(), "last_Java_sp must be set"); // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown EXCEPTION_MARK; #ifdef DEBUG if (!obj->is_oop()) { ResetNoHandleMark rhm; nmethod* method = thread->last_frame().cb()->as_nmethod_or_null(); if (method != NULL) { tty->print_cr("ERROR in monitorexit in method %s wrong obj " INTPTR_FORMAT, method->name(), obj); } thread->print_stack_on(tty); assert(false, "invalid lock object pointer dected"); } #endif if (GraalUseFastLocking) { // When using fast locking, the compiled code has already tried the fast case ObjectSynchronizer::slow_exit(obj, lock, THREAD); } else { ObjectSynchronizer::fast_exit(obj, lock, THREAD); } if (TraceGraal >= 3) { char type[O_BUFLEN]; obj->klass()->name()->as_C_string(type, O_BUFLEN); tty->print_cr("%s: exited locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), obj, type, obj->mark(), lock); tty->flush(); } JRT_END JRT_ENTRY(void, GraalRuntime::log_object(JavaThread* thread, oop obj, jint flags)) bool string = mask_bits_are_true(flags, LOG_OBJECT_STRING); bool address = mask_bits_are_true(flags, LOG_OBJECT_ADDRESS); bool newline = mask_bits_are_true(flags, LOG_OBJECT_NEWLINE); if (!string) { if (!address && obj->is_oop_or_null(true)) { char buf[O_BUFLEN]; tty->print("%s@%p", obj->klass()->name()->as_C_string(buf, O_BUFLEN), obj); } else { tty->print("%p", obj); } } else { ResourceMark rm; assert(obj != NULL && java_lang_String::is_instance(obj), "must be"); char *buf = java_lang_String::as_utf8_string(obj); tty->print(buf); } if (newline) { tty->cr(); } JRT_END JRT_ENTRY(void, GraalRuntime::vm_error(JavaThread* thread, oop where, oop format, jlong value)) ResourceMark rm; assert(where == NULL || java_lang_String::is_instance(where), "must be"); const char *error_msg = where == NULL ? "<internal Graal error>" : java_lang_String::as_utf8_string(where); char *detail_msg = NULL; if (format != NULL) { const char* buf = java_lang_String::as_utf8_string(format); size_t detail_msg_length = strlen(buf) * 2; detail_msg = (char *) NEW_RESOURCE_ARRAY(u_char, detail_msg_length); jio_snprintf(detail_msg, detail_msg_length, buf, value); } report_vm_error(__FILE__, __LINE__, error_msg, detail_msg); JRT_END JRT_LEAF(void, GraalRuntime::log_printf(JavaThread* thread, oop format, jlong v1, jlong v2, jlong v3)) ResourceMark rm; assert(format != NULL && java_lang_String::is_instance(format), "must be"); char *buf = java_lang_String::as_utf8_string(format); tty->print(buf, v1, v2, v3); JRT_END JRT_ENTRY(void, GraalRuntime::log_primitive(JavaThread* thread, jchar typeChar, jlong value, jboolean newline)) union { jlong l; jdouble d; jfloat f; } uu; uu.l = value; switch (typeChar) { case 'z': tty->print(value == 0 ? "false" : "true"); break; case 'b': tty->print("%d", (jbyte) value); break; case 'c': tty->print("%c", (jchar) value); break; case 's': tty->print("%d", (jshort) value); break; case 'i': tty->print("%d", (jint) value); break; case 'f': tty->print("%f", uu.f); break; case 'j': tty->print(INT64_FORMAT, value); break; case 'd': tty->print("%lf", uu.d); break; default: assert(false, "unknown typeChar"); break; } if (newline) { tty->cr(); } JRT_END JRT_ENTRY(jint, GraalRuntime::identity_hash_code(JavaThread* thread, oop obj)) return (jint) obj->identity_hash(); JRT_END JRT_ENTRY(jboolean, GraalRuntime::thread_is_interrupted(JavaThread* thread, oop receiver, jboolean clear_interrupted)) // Ensure that the C++ Thread and OSThread structures aren't freed before we operate Handle receiverHandle(thread, receiver); MutexLockerEx ml(thread->threadObj() == receiver ? NULL : Threads_lock); JavaThread* receiverThread = java_lang_Thread::thread(receiverHandle()); return (jint) Thread::is_interrupted(receiverThread, clear_interrupted != 0); JRT_END // JVM_InitializeGraalRuntime JVM_ENTRY(jobject, JVM_InitializeGraalRuntime(JNIEnv *env, jclass graalclass)) return VMToCompiler::graalRuntimePermObject(); JVM_END