truffle: src/share/vm/opto/runtime.cpp comparison

comparison src/share/vm/opto/runtime.cpp @ 0:a61af66fc99e jdk7-b24

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author	duke
date	Sat, 01 Dec 2007 00:00:00 +0000
parents
children	37f87013dfd8

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--1:000000000000
+:a61af66fc99e
+/*
+* Copyright 1998-2007 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+* CA 95054 USA or visit www.sun.com if you need additional information or
+* have any questions.
+*
+*/
+#include "incls/_precompiled.incl"
+#include "incls/_runtime.cpp.incl"
+// For debugging purposes:
+//  To force FullGCALot inside a runtime function, add the following two lines
+//
+//  Universe::release_fullgc_alot_dummy();
+//  MarkSweep::invoke(0, "Debugging");
+//
+// At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
+// Compiled code entry points
+address OptoRuntime::_new_instance_Java                           = NULL;
+address OptoRuntime::_new_array_Java                              = NULL;
+address OptoRuntime::_multianewarray2_Java                        = NULL;
+address OptoRuntime::_multianewarray3_Java                        = NULL;
+address OptoRuntime::_multianewarray4_Java                        = NULL;
+address OptoRuntime::_multianewarray5_Java                        = NULL;
+address OptoRuntime::_vtable_must_compile_Java                    = NULL;
+address OptoRuntime::_complete_monitor_locking_Java               = NULL;
+address OptoRuntime::_rethrow_Java                                = NULL;
+address OptoRuntime::_slow_arraycopy_Java                         = NULL;
+address OptoRuntime::_register_finalizer_Java                     = NULL;
+# ifdef ENABLE_ZAP_DEAD_LOCALS
+address OptoRuntime::_zap_dead_Java_locals_Java                   = NULL;
+address OptoRuntime::_zap_dead_native_locals_Java                 = NULL;
+# endif
+// This should be called in an assertion at the start of OptoRuntime routines
+// which are entered from compiled code (all of them)
+#ifndef PRODUCT
+static bool check_compiled_frame(JavaThread* thread) {
+assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
+#ifdef ASSERT
+RegisterMap map(thread, false);
+frame caller = thread->last_frame().sender(&map);
+assert(caller.is_compiled_frame(), "not being called from compiled like code");
+#endif  /* ASSERT */
+return true;
+}
+#endif
+#define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \
+var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc)
+void OptoRuntime::generate(ciEnv* env) {
+generate_exception_blob();
+// Note: tls: Means fetching the return oop out of the thread-local storage
+//
+//   variable/name                       type-function-gen              , runtime method                  ,fncy_jp, tls,save_args,retpc
+// -------------------------------------------------------------------------------------------------------------------------------
+gen(env, _new_instance_Java              , new_instance_Type            , new_instance_C                  ,    0 , true , false, false);
+gen(env, _new_array_Java                 , new_array_Type               , new_array_C                     ,    0 , true , false, false);
+gen(env, _multianewarray2_Java           , multianewarray2_Type         , multianewarray2_C               ,    0 , true , false, false);
+gen(env, _multianewarray3_Java           , multianewarray3_Type         , multianewarray3_C               ,    0 , true , false, false);
+gen(env, _multianewarray4_Java           , multianewarray4_Type         , multianewarray4_C               ,    0 , true , false, false);
+gen(env, _multianewarray5_Java           , multianewarray5_Type         , multianewarray5_C               ,    0 , true , false, false);
+gen(env, _complete_monitor_locking_Java  , complete_monitor_enter_Type  , SharedRuntime::complete_monitor_locking_C      ,    0 , false, false, false);
+gen(env, _rethrow_Java                   , rethrow_Type                 , rethrow_C                       ,    2 , true , false, true );
+gen(env, _slow_arraycopy_Java            , slow_arraycopy_Type          , SharedRuntime::slow_arraycopy_C ,    0 , false, false, false);
+gen(env, _register_finalizer_Java        , register_finalizer_Type      , register_finalizer              ,    0 , false, false, false);
+# ifdef ENABLE_ZAP_DEAD_LOCALS
+gen(env, _zap_dead_Java_locals_Java      , zap_dead_locals_Type         , zap_dead_Java_locals_C          ,    0 , false, true , false );
+gen(env, _zap_dead_native_locals_Java    , zap_dead_locals_Type         , zap_dead_native_locals_C        ,    0 , false, true , false );
+# endif
+}
+#undef gen
+// Helper method to do generation of RunTimeStub's
+address OptoRuntime::generate_stub( ciEnv* env,
+TypeFunc_generator gen, address C_function,
+const char *name, int is_fancy_jump,
+bool pass_tls,
+bool save_argument_registers,
+bool return_pc ) {
+ResourceMark rm;
+Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc );
+return  C.stub_entry_point();
+}
+const char* OptoRuntime::stub_name(address entry) {
+#ifndef PRODUCT
+CodeBlob* cb = CodeCache::find_blob(entry);
+RuntimeStub* rs =(RuntimeStub *)cb;
+assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub");
+return rs->name();
+#else
+// Fast implementation for product mode (maybe it should be inlined too)
+return "runtime stub";
+#endif
+}
+//=============================================================================
+// Opto compiler runtime routines
+//=============================================================================
+//=============================allocation======================================
+// We failed the fast-path allocation.  Now we need to do a scavenge or GC
+// and try allocation again.
+void OptoRuntime::do_eager_card_mark(JavaThread* thread) {
+// After any safepoint, just before going back to compiled code,
+// we perform a card mark.  This lets the compiled code omit
+// card marks for initialization of new objects.
+// Keep this code consistent with GraphKit::store_barrier.
+oop new_obj = thread->vm_result();
+if (new_obj == NULL)  return;
+assert(Universe::heap()->can_elide_tlab_store_barriers(),
+"compiler must check this first");
+new_obj = Universe::heap()->new_store_barrier(new_obj);
+thread->set_vm_result(new_obj);
+}
+// object allocation
+JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(klassOopDesc* klass, JavaThread* thread))
+JRT_BLOCK;
+#ifndef PRODUCT
+SharedRuntime::_new_instance_ctr++;         // new instance requires GC
+#endif
+assert(check_compiled_frame(thread), "incorrect caller");
+// These checks are cheap to make and support reflective allocation.
+int lh = Klass::cast(klass)->layout_helper();
+if (Klass::layout_helper_needs_slow_path(lh)
+|| !instanceKlass::cast(klass)->is_initialized()) {
+KlassHandle kh(THREAD, klass);
+kh->check_valid_for_instantiation(false, THREAD);
+if (!HAS_PENDING_EXCEPTION) {
+instanceKlass::cast(kh())->initialize(THREAD);
+}
+if (!HAS_PENDING_EXCEPTION) {
+klass = kh();
+} else {
+klass = NULL;
+}
+}
+if (klass != NULL) {
+// Scavenge and allocate an instance.
+oop result = instanceKlass::cast(klass)->allocate_instance(THREAD);
+thread->set_vm_result(result);
+// Pass oops back through thread local storage.  Our apparent type to Java
+// is that we return an oop, but we can block on exit from this routine and
+// a GC can trash the oop in C's return register.  The generated stub will
+// fetch the oop from TLS after any possible GC.
+}
+deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
+JRT_BLOCK_END;
+if (GraphKit::use_ReduceInitialCardMarks()) {
+// do them now so we don't have to do them on the fast path
+do_eager_card_mark(thread);
+}
+JRT_END
+// array allocation
+JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(klassOopDesc* array_type, int len, JavaThread *thread))
+JRT_BLOCK;
+#ifndef PRODUCT
+SharedRuntime::_new_array_ctr++;            // new array requires GC
+#endif
+assert(check_compiled_frame(thread), "incorrect caller");
+// Scavenge and allocate an instance.
+oop result;
+if (Klass::cast(array_type)->oop_is_typeArray()) {
+// The oopFactory likes to work with the element type.
+// (We could bypass the oopFactory, since it doesn't add much value.)
+BasicType elem_type = typeArrayKlass::cast(array_type)->element_type();
+result = oopFactory::new_typeArray(elem_type, len, THREAD);
+} else {
+// Although the oopFactory likes to work with the elem_type,
+// the compiler prefers the array_type, since it must already have
+// that latter value in hand for the fast path.
+klassOopDesc* elem_type = objArrayKlass::cast(array_type)->element_klass();
+result = oopFactory::new_objArray(elem_type, len, THREAD);
+}
+// Pass oops back through thread local storage.  Our apparent type to Java
+// is that we return an oop, but we can block on exit from this routine and
+// a GC can trash the oop in C's return register.  The generated stub will
+// fetch the oop from TLS after any possible GC.
+deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
+thread->set_vm_result(result);
+JRT_BLOCK_END;
+if (GraphKit::use_ReduceInitialCardMarks()) {
+// do them now so we don't have to do them on the fast path
+do_eager_card_mark(thread);
+}
+JRT_END
+// Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
+// multianewarray for 2 dimensions
+JRT_ENTRY(void, OptoRuntime::multianewarray2_C(klassOopDesc* elem_type, int len1, int len2, JavaThread *thread))
+#ifndef PRODUCT
+SharedRuntime::_multi2_ctr++;                // multianewarray for 1 dimension
+#endif
+assert(check_compiled_frame(thread), "incorrect caller");
+assert(oop(elem_type)->is_klass(), "not a class");
+jint dims[2];
+dims[0] = len1;
+dims[1] = len2;
+oop obj = arrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
+deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
+thread->set_vm_result(obj);
+JRT_END
+// multianewarray for 3 dimensions
+JRT_ENTRY(void, OptoRuntime::multianewarray3_C(klassOopDesc* elem_type, int len1, int len2, int len3, JavaThread *thread))
+#ifndef PRODUCT
+SharedRuntime::_multi3_ctr++;                // multianewarray for 1 dimension
+#endif
+assert(check_compiled_frame(thread), "incorrect caller");
+assert(oop(elem_type)->is_klass(), "not a class");
+jint dims[3];
+dims[0] = len1;
+dims[1] = len2;
+dims[2] = len3;
+oop obj = arrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
+deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
+thread->set_vm_result(obj);
+JRT_END
+// multianewarray for 4 dimensions
+JRT_ENTRY(void, OptoRuntime::multianewarray4_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread))
+#ifndef PRODUCT
+SharedRuntime::_multi4_ctr++;                // multianewarray for 1 dimension
+#endif
+assert(check_compiled_frame(thread), "incorrect caller");
+assert(oop(elem_type)->is_klass(), "not a class");
+jint dims[4];
+dims[0] = len1;
+dims[1] = len2;
+dims[2] = len3;
+dims[3] = len4;
+oop obj = arrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
+deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
+thread->set_vm_result(obj);
+JRT_END
+// multianewarray for 5 dimensions
+JRT_ENTRY(void, OptoRuntime::multianewarray5_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread))
+#ifndef PRODUCT
+SharedRuntime::_multi5_ctr++;                // multianewarray for 1 dimension
+#endif
+assert(check_compiled_frame(thread), "incorrect caller");
+assert(oop(elem_type)->is_klass(), "not a class");
+jint dims[5];
+dims[0] = len1;
+dims[1] = len2;
+dims[2] = len3;
+dims[3] = len4;
+dims[4] = len5;
+oop obj = arrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
+deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
+thread->set_vm_result(obj);
+JRT_END
+const TypeFunc *OptoRuntime::new_instance_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(1);
+fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
+// create result type (range)
+fields = TypeTuple::fields(1);
+fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
+return TypeFunc::make(domain, range);
+}
+const TypeFunc *OptoRuntime::athrow_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(1);
+fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
+// create result type (range)
+fields = TypeTuple::fields(0);
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
+return TypeFunc::make(domain, range);
+}
+const TypeFunc *OptoRuntime::new_array_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(2);
+fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;   // element klass
+fields[TypeFunc::Parms+1] = TypeInt::INT;       // array size
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
+// create result type (range)
+fields = TypeTuple::fields(1);
+fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
+return TypeFunc::make(domain, range);
+}
+const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) {
+// create input type (domain)
+const int nargs = ndim + 1;
+const Type **fields = TypeTuple::fields(nargs);
+fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;   // element klass
+for( int i = 1; i < nargs; i++ )
+fields[TypeFunc::Parms + i] = TypeInt::INT;       // array size
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields);
+// create result type (range)
+fields = TypeTuple::fields(1);
+fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
+return TypeFunc::make(domain, range);
+}
+const TypeFunc *OptoRuntime::multianewarray2_Type() {
+return multianewarray_Type(2);
+}
+const TypeFunc *OptoRuntime::multianewarray3_Type() {
+return multianewarray_Type(3);
+}
+const TypeFunc *OptoRuntime::multianewarray4_Type() {
+return multianewarray_Type(4);
+}
+const TypeFunc *OptoRuntime::multianewarray5_Type() {
+return multianewarray_Type(5);
+}
+const TypeFunc *OptoRuntime::uncommon_trap_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(1);
+// symbolOop name of class to be loaded
+fields[TypeFunc::Parms+0] = TypeInt::INT;
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
+// create result type (range)
+fields = TypeTuple::fields(0);
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
+return TypeFunc::make(domain, range);
+}
+# ifdef ENABLE_ZAP_DEAD_LOCALS
+// Type used for stub generation for zap_dead_locals.
+// No inputs or outputs
+const TypeFunc *OptoRuntime::zap_dead_locals_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(0);
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields);
+// create result type (range)
+fields = TypeTuple::fields(0);
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields);
+return TypeFunc::make(domain,range);
+}
+# endif
+//-----------------------------------------------------------------------------
+// Monitor Handling
+const TypeFunc *OptoRuntime::complete_monitor_enter_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(2);
+fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;  // Object to be Locked
+fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM;   // Address of stack location for lock
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
+// create result type (range)
+fields = TypeTuple::fields(0);
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
+return TypeFunc::make(domain,range);
+}
+//-----------------------------------------------------------------------------
+const TypeFunc *OptoRuntime::complete_monitor_exit_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(2);
+fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;  // Object to be Locked
+fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM;   // Address of stack location for lock
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
+// create result type (range)
+fields = TypeTuple::fields(0);
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
+return TypeFunc::make(domain,range);
+}
+const TypeFunc* OptoRuntime::flush_windows_Type() {
+// create input type (domain)
+const Type** fields = TypeTuple::fields(1);
+fields[TypeFunc::Parms+0] = NULL; // void
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields);
+// create result type
+fields = TypeTuple::fields(1);
+fields[TypeFunc::Parms+0] = NULL; // void
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
+return TypeFunc::make(domain, range);
+}
+const TypeFunc* OptoRuntime::l2f_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(2);
+fields[TypeFunc::Parms+0] = TypeLong::LONG;
+fields[TypeFunc::Parms+1] = Type::HALF;
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
+// create result type (range)
+fields = TypeTuple::fields(1);
+fields[TypeFunc::Parms+0] = Type::FLOAT;
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
+return TypeFunc::make(domain, range);
+}
+const TypeFunc* OptoRuntime::modf_Type() {
+const Type **fields = TypeTuple::fields(2);
+fields[TypeFunc::Parms+0] = Type::FLOAT;
+fields[TypeFunc::Parms+1] = Type::FLOAT;
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
+// create result type (range)
+fields = TypeTuple::fields(1);
+fields[TypeFunc::Parms+0] = Type::FLOAT;
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
+return TypeFunc::make(domain, range);
+}
+const TypeFunc *OptoRuntime::Math_D_D_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(2);
+// symbolOop name of class to be loaded
+fields[TypeFunc::Parms+0] = Type::DOUBLE;
+fields[TypeFunc::Parms+1] = Type::HALF;
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
+// create result type (range)
+fields = TypeTuple::fields(2);
+fields[TypeFunc::Parms+0] = Type::DOUBLE;
+fields[TypeFunc::Parms+1] = Type::HALF;
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
+return TypeFunc::make(domain, range);
+}
+const TypeFunc* OptoRuntime::Math_DD_D_Type() {
+const Type **fields = TypeTuple::fields(4);
+fields[TypeFunc::Parms+0] = Type::DOUBLE;
+fields[TypeFunc::Parms+1] = Type::HALF;
+fields[TypeFunc::Parms+2] = Type::DOUBLE;
+fields[TypeFunc::Parms+3] = Type::HALF;
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields);
+// create result type (range)
+fields = TypeTuple::fields(2);
+fields[TypeFunc::Parms+0] = Type::DOUBLE;
+fields[TypeFunc::Parms+1] = Type::HALF;
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
+return TypeFunc::make(domain, range);
+}
+//-------------- currentTimeMillis
+const TypeFunc* OptoRuntime::current_time_millis_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(0);
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields);
+// create result type (range)
+fields = TypeTuple::fields(2);
+fields[TypeFunc::Parms+0] = TypeLong::LONG;
+fields[TypeFunc::Parms+1] = Type::HALF;
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
+return TypeFunc::make(domain, range);
+}
+// arraycopy stub variations:
+enum ArrayCopyType {
+ac_fast,                      // void(ptr, ptr, size_t)
+ac_checkcast,                 //  int(ptr, ptr, size_t, size_t, ptr)
+ac_slow,                      // void(ptr, int, ptr, int, int)
+ac_generic                    //  int(ptr, int, ptr, int, int)
+};
+static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) {
+// create input type (domain)
+int num_args      = (act == ac_fast ? 3 : 5);
+int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0);
+int argcnt = num_args;
+LP64_ONLY(argcnt += num_size_args); // halfwords for lengths
+const Type** fields = TypeTuple::fields(argcnt);
+int argp = TypeFunc::Parms;
+fields[argp++] = TypePtr::NOTNULL;    // src
+if (num_size_args == 0) {
+fields[argp++] = TypeInt::INT;      // src_pos
+}
+fields[argp++] = TypePtr::NOTNULL;    // dest
+if (num_size_args == 0) {
+fields[argp++] = TypeInt::INT;      // dest_pos
+fields[argp++] = TypeInt::INT;      // length
+}
+while (num_size_args-- > 0) {
+fields[argp++] = TypeX_X;               // size in whatevers (size_t)
+LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
+}
+if (act == ac_checkcast) {
+fields[argp++] = TypePtr::NOTNULL;  // super_klass
+}
+assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act");
+const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
+// create result type if needed
+int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0);
+fields = TypeTuple::fields(1);
+if (retcnt == 0)
+fields[TypeFunc::Parms+0] = NULL; // void
+else
+fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed
+const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields);
+return TypeFunc::make(domain, range);
+}
+const TypeFunc* OptoRuntime::fast_arraycopy_Type() {
+// This signature is simple:  Two base pointers and a size_t.
+return make_arraycopy_Type(ac_fast);
+}
+const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() {
+// An extension of fast_arraycopy_Type which adds type checking.
+return make_arraycopy_Type(ac_checkcast);
+}
+const TypeFunc* OptoRuntime::slow_arraycopy_Type() {
+// This signature is exactly the same as System.arraycopy.
+// There are no intptr_t (int/long) arguments.
+return make_arraycopy_Type(ac_slow);
+}
+const TypeFunc* OptoRuntime::generic_arraycopy_Type() {
+// This signature is like System.arraycopy, except that it returns status.
+return make_arraycopy_Type(ac_generic);
+}
+//------------- Interpreter state access for on stack replacement
+const TypeFunc* OptoRuntime::osr_end_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(1);
+fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
+// create result type
+fields = TypeTuple::fields(1);
+// fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop
+fields[TypeFunc::Parms+0] = NULL; // void
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
+return TypeFunc::make(domain, range);
+}
+//-------------- methodData update helpers
+const TypeFunc* OptoRuntime::profile_receiver_type_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(2);
+fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL;    // methodData pointer
+fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM;    // receiver oop
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
+// create result type
+fields = TypeTuple::fields(1);
+fields[TypeFunc::Parms+0] = NULL; // void
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
+return TypeFunc::make(domain,range);
+}
+JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver))
+if (receiver == NULL) return;
+klassOop receiver_klass = receiver->klass();
+intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells();
+int empty_row = -1;           // free row, if any is encountered
+// ReceiverTypeData* vc = new ReceiverTypeData(mdp);
+for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) {
+// if (vc->receiver(row) == receiver_klass)
+int receiver_off = ReceiverTypeData::receiver_cell_index(row);
+intptr_t row_recv = *(mdp + receiver_off);
+if (row_recv == (intptr_t) receiver_klass) {
+// vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment);
+int count_off = ReceiverTypeData::receiver_count_cell_index(row);
+*(mdp + count_off) += DataLayout::counter_increment;
+return;
+} else if (row_recv == 0) {
+// else if (vc->receiver(row) == NULL)
+empty_row = (int) row;
+}
+}
+if (empty_row != -1) {
+int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row);
+// vc->set_receiver(empty_row, receiver_klass);
+*(mdp + receiver_off) = (intptr_t) receiver_klass;
+// vc->set_receiver_count(empty_row, DataLayout::counter_increment);
+int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row);
+*(mdp + count_off) = DataLayout::counter_increment;
+}
+JRT_END
+//-----------------------------------------------------------------------------
+// implicit exception support.
+static void report_null_exception_in_code_cache(address exception_pc) {
+ResourceMark rm;
+CodeBlob* n = CodeCache::find_blob(exception_pc);
+if (n != NULL) {
+tty->print_cr("#");
+tty->print_cr("# HotSpot Runtime Error, null exception in generated code");
+tty->print_cr("#");
+tty->print_cr("# pc where exception happened = " INTPTR_FORMAT, exception_pc);
+if (n->is_nmethod()) {
+methodOop method = ((nmethod*)n)->method();
+tty->print_cr("# Method where it happened %s.%s ", Klass::cast(method->method_holder())->name()->as_C_string(), method->name()->as_C_string());
+tty->print_cr("#");
+if (ShowMessageBoxOnError && UpdateHotSpotCompilerFileOnError) {
+const char* title    = "HotSpot Runtime Error";
+const char* question = "Do you want to exclude compilation of this method in future runs?";
+if (os::message_box(title, question)) {
+CompilerOracle::append_comment_to_file("");
+CompilerOracle::append_comment_to_file("Null exception in compiled code resulted in the following exclude");
+CompilerOracle::append_comment_to_file("");
+CompilerOracle::append_exclude_to_file(method);
+tty->print_cr("#");
+tty->print_cr("# %s has been updated to exclude the specified method", CompileCommandFile);
+tty->print_cr("#");
+}
+}
+fatal("Implicit null exception happened in compiled method");
+} else {
+n->print();
+fatal("Implicit null exception happened in generated stub");
+}
+}
+fatal("Implicit null exception at wrong place");
+}
+//-------------------------------------------------------------------------------------
+// register policy
+bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) {
+assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
+switch (register_save_policy[reg]) {
+case 'C': return false; //SOC
+case 'E': return true ; //SOE
+case 'N': return false; //NS
+case 'A': return false; //AS
+}
+ShouldNotReachHere();
+return false;
+}
+//-----------------------------------------------------------------------
+// Exceptions
+//
+static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN;
+// The method is an entry that is always called by a C++ method not
+// directly from compiled code. Compiled code will call the C++ method following.
+// We can't allow async exception to be installed during  exception processing.
+JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm))
+// Do not confuse exception_oop with pending_exception. The exception_oop
+// is only used to pass arguments into the method. Not for general
+// exception handling.  DO NOT CHANGE IT to use pending_exception, since
+// the runtime stubs checks this on exit.
+assert(thread->exception_oop() != NULL, "exception oop is found");
+address handler_address = NULL;
+Handle exception(thread, thread->exception_oop());
+if (TraceExceptions) {
+trace_exception(exception(), thread->exception_pc(), "");
+}
+// for AbortVMOnException flag
+NOT_PRODUCT(Exceptions::debug_check_abort(exception));
+#ifdef ASSERT
+if (!(exception->is_a(SystemDictionary::throwable_klass()))) {
+// should throw an exception here
+ShouldNotReachHere();
+}
+#endif
+// new exception handling: this method is entered only from adapters
+// exceptions from compiled java methods are handled in compiled code
+// using rethrow node
+address pc = thread->exception_pc();
+nm = CodeCache::find_nmethod(pc);
+assert(nm != NULL, "No NMethod found");
+if (nm->is_native_method()) {
+fatal("Native mathod should not have path to exception handling");
+} else {
+// we are switching to old paradigm: search for exception handler in caller_frame
+// instead in exception handler of caller_frame.sender()
+if (JvmtiExport::can_post_exceptions()) {
+// "Full-speed catching" is not necessary here,
+// since we're notifying the VM on every catch.
+// Force deoptimization and the rest of the lookup
+// will be fine.
+deoptimize_caller_frame(thread, true);
+}
+// Check the stack guard pages.  If enabled, look for handler in this frame;
+// otherwise, forcibly unwind the frame.
+//
+// 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate.
+bool force_unwind = !thread->reguard_stack();
+bool deopting = false;
+if (nm->is_deopt_pc(pc)) {
+deopting = true;
+RegisterMap map(thread, false);
+frame deoptee = thread->last_frame().sender(&map);
+assert(deoptee.is_deoptimized_frame(), "must be deopted");
+// Adjust the pc back to the original throwing pc
+pc = deoptee.pc();
+}
+// If we are forcing an unwind because of stack overflow then deopt is
+// irrelevant sice we are throwing the frame away anyway.
+if (deopting && !force_unwind) {
+handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
+} else {
+handler_address =
+force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);
+if (handler_address == NULL) {
+handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);
+assert (handler_address != NULL, "must have compiled handler");
+// Update the exception cache only when the unwind was not forced.
+if (!force_unwind) {
+nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
+}
+} else {
+assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");
+}
+}
+thread->set_exception_pc(pc);
+thread->set_exception_handler_pc(handler_address);
+thread->set_exception_stack_size(0);
+}
+// Restore correct return pc.  Was saved above.
+thread->set_exception_oop(exception());
+return handler_address;
+JRT_END
+// We are entering here from exception_blob
+// 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 without the usual JRT wrapper. We will call a helper routine that
+// will do the normal VM entry. We do it this way so that we can see if the nmethod
+// we looked up the handler for has been deoptimized in the meantime. If it has been
+// we must not use the handler and instread return the deopt blob.
+address OptoRuntime::handle_exception_C(JavaThread* thread) {
+//
+// We are in Java not VM and in debug mode we have a NoHandleMark
+//
+#ifndef PRODUCT
+SharedRuntime::_find_handler_ctr++;          // find exception handler
+#endif
+debug_only(NoHandleMark __hm;)
+nmethod* nm = NULL;
+address handler_address = NULL;
+{
+// Enter the VM
+ResetNoHandleMark rnhm;
+handler_address = handle_exception_C_helper(thread, nm);
+}
+// Back in java: Use no oops, DON'T safepoint
+// Now check to see if the handler we are returning is in a now
+// deoptimized frame
+if (nm != NULL) {
+RegisterMap map(thread, false);
+frame caller = thread->last_frame().sender(&map);
+#ifdef ASSERT
+assert(caller.is_compiled_frame(), "must be");
+#endif // ASSERT
+if (caller.is_deoptimized_frame()) {
+handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
+}
+}
+return handler_address;
+}
+//------------------------------rethrow----------------------------------------
+// We get here after compiled code has executed a 'RethrowNode'.  The callee
+// is either throwing or rethrowing an exception.  The callee-save registers
+// have been restored, synchronized objects have been unlocked and the callee
+// stack frame has been removed.  The return address was passed in.
+// Exception oop is passed as the 1st argument.  This routine is then called
+// from the stub.  On exit, we know where to jump in the caller's code.
+// After this C code exits, the stub will pop his frame and end in a jump
+// (instead of a return).  We enter the caller's default handler.
+//
+// This must be JRT_LEAF:
+//     - caller will not change its state as we cannot block on exit,
+//       therefore raw_exception_handler_for_return_address is all it takes
+//       to handle deoptimized blobs
+//
+// However, there needs to be a safepoint check in the middle!  So compiled
+// safepoints are completely watertight.
+//
+// Thus, it cannot be a leaf since it contains the No_GC_Verifier.
+//
+// *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*
+//
+address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {
+#ifndef PRODUCT
+SharedRuntime::_rethrow_ctr++;               // count rethrows
+#endif
+assert (exception != NULL, "should have thrown a NULLPointerException");
+#ifdef ASSERT
+if (!(exception->is_a(SystemDictionary::throwable_klass()))) {
+// should throw an exception here
+ShouldNotReachHere();
+}
+#endif
+thread->set_vm_result(exception);
+// Frame not compiled (handles deoptimization blob)
+return SharedRuntime::raw_exception_handler_for_return_address(ret_pc);
+}
+const TypeFunc *OptoRuntime::rethrow_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(1);
+fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
+// create result type (range)
+fields = TypeTuple::fields(1);
+fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
+return TypeFunc::make(domain, range);
+}
+void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {
+// Deoptimize frame
+if (doit) {
+// Called from within the owner thread, so no need for safepoint
+RegisterMap reg_map(thread);
+frame stub_frame = thread->last_frame();
+assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
+frame caller_frame = stub_frame.sender(&reg_map);
+VM_DeoptimizeFrame deopt(thread, caller_frame.id());
+VMThread::execute(&deopt);
+}
+}
+const TypeFunc *OptoRuntime::register_finalizer_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(1);
+fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;  // oop;          Receiver
+// // The JavaThread* is passed to each routine as the last argument
+// fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL;  // JavaThread *; Executing thread
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
+// create result type (range)
+fields = TypeTuple::fields(0);
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
+return TypeFunc::make(domain,range);
+}
+//-----------------------------------------------------------------------------
+// Dtrace support.  entry and exit probes have the same signature
+const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(2);
+fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
+fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL;  // methodOop;    Method we are entering
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
+// create result type (range)
+fields = TypeTuple::fields(0);
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
+return TypeFunc::make(domain,range);
+}
+const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
+// create input type (domain)
+const Type **fields = TypeTuple::fields(2);
+fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
+fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL;  // oop;    newly allocated object
+const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
+// create result type (range)
+fields = TypeTuple::fields(0);
+const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
+return TypeFunc::make(domain,range);
+}
+JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))
+assert(obj->is_oop(), "must be a valid oop");
+assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise");
+instanceKlass::register_finalizer(instanceOop(obj), CHECK);
+JRT_END
+//-----------------------------------------------------------------------------
+NamedCounter * volatile OptoRuntime::_named_counters = NULL;
+//
+// dump the collected NamedCounters.
+//
+void OptoRuntime::print_named_counters() {
+int total_lock_count = 0;
+int eliminated_lock_count = 0;
+NamedCounter* c = _named_counters;
+while (c) {
+if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
+int count = c->count();
+if (count > 0) {
+bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
+if (Verbose) {
+tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
+}
+total_lock_count += count;
+if (eliminated) {
+eliminated_lock_count += count;
+}
+}
+} else if (c->tag() == NamedCounter::BiasedLockingCounter) {
+BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();
+if (blc->nonzero()) {
+tty->print_cr("%s", c->name());
+blc->print_on(tty);
+}
+}
+c = c->next();
+}
+if (total_lock_count > 0) {
+tty->print_cr("dynamic locks: %d", total_lock_count);
+if (eliminated_lock_count) {
+tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,
+(int)(eliminated_lock_count * 100.0 / total_lock_count));
+}
+}
+}
+//
+//  Allocate a new NamedCounter.  The JVMState is used to generate the
+//  name which consists of method@line for the inlining tree.
+//
+NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {
+int max_depth = youngest_jvms->depth();
+// Visit scopes from youngest to oldest.
+bool first = true;
+stringStream st;
+for (int depth = max_depth; depth >= 1; depth--) {
+JVMState* jvms = youngest_jvms->of_depth(depth);
+ciMethod* m = jvms->has_method() ? jvms->method() : NULL;
+if (!first) {
+st.print(" ");
+} else {
+first = false;
+}
+int bci = jvms->bci();
+if (bci < 0) bci = 0;
+st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);
+// To print linenumbers instead of bci use: m->line_number_from_bci(bci)
+}
+NamedCounter* c;
+if (tag == NamedCounter::BiasedLockingCounter) {
+c = new BiasedLockingNamedCounter(strdup(st.as_string()));
+} else {
+c = new NamedCounter(strdup(st.as_string()), tag);
+}
+// atomically add the new counter to the head of the list.  We only
+// add counters so this is safe.
+NamedCounter* head;
+do {
+head = _named_counters;
+c->set_next(head);
+} while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);
+return c;
+}
+//-----------------------------------------------------------------------------
+// Non-product code
+#ifndef PRODUCT
+int trace_exception_counter = 0;
+static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {
+ttyLocker ttyl;
+trace_exception_counter++;
+tty->print("%d [Exception (%s): ", trace_exception_counter, msg);
+exception_oop->print_value();
+tty->print(" in ");
+CodeBlob* blob = CodeCache::find_blob(exception_pc);
+if (blob->is_nmethod()) {
+((nmethod*)blob)->method()->print_value();
+} else if (blob->is_runtime_stub()) {
+tty->print("<runtime-stub>");
+} else {
+tty->print("<unknown>");
+}
+tty->print(" at " INTPTR_FORMAT,  exception_pc);
+tty->print_cr("]");
+}
+#endif  // PRODUCT
+# ifdef ENABLE_ZAP_DEAD_LOCALS
+// Called from call sites in compiled code with oop maps (actually safepoints)
+// Zaps dead locals in first java frame.
+// Is entry because may need to lock to generate oop maps
+// Currently, only used for compiler frames, but someday may be used
+// for interpreter frames, too.
+int OptoRuntime::ZapDeadCompiledLocals_count = 0;
+// avoid pointers to member funcs with these helpers
+static bool is_java_frame(  frame* f) { return f->is_java_frame();   }
+static bool is_native_frame(frame* f) { return f->is_native_frame(); }
+void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
+bool (*is_this_the_right_frame_to_zap)(frame*)) {
+assert(JavaThread::current() == thread, "is this needed?");
+if ( !ZapDeadCompiledLocals )  return;
+bool skip = false;
+if ( ZapDeadCompiledLocalsFirst  ==  0  ) ; // nothing special
+else if ( ZapDeadCompiledLocalsFirst  >  ZapDeadCompiledLocals_count )  skip = true;
+else if ( ZapDeadCompiledLocalsFirst  == ZapDeadCompiledLocals_count )
+warning("starting zapping after skipping");
+if ( ZapDeadCompiledLocalsLast  ==  -1  ) ; // nothing special
+else if ( ZapDeadCompiledLocalsLast  <   ZapDeadCompiledLocals_count )  skip = true;
+else if ( ZapDeadCompiledLocalsLast  ==  ZapDeadCompiledLocals_count )
+warning("about to zap last zap");
+++ZapDeadCompiledLocals_count; // counts skipped zaps, too
+if ( skip )  return;
+// find java frame and zap it
+for (StackFrameStream sfs(thread);  !sfs.is_done();  sfs.next()) {
+if (is_this_the_right_frame_to_zap(sfs.current()) ) {
+sfs.current()->zap_dead_locals(thread, sfs.register_map());
+return;
+}
+}
+warning("no frame found to zap in zap_dead_Java_locals_C");
+}
+JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
+zap_dead_java_or_native_locals(thread, is_java_frame);
+JRT_END
+// The following does not work because for one thing, the
+// thread state is wrong; it expects java, but it is native.
+// Also, the invarients in a native stub are different and
+// I'm not sure it is safe to have a MachCalRuntimeDirectNode
+// in there.
+// So for now, we do not zap in native stubs.
+JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
+zap_dead_java_or_native_locals(thread, is_native_frame);
+JRT_END
+# endif

Mercurial > hg > truffle

comparison src/share/vm/opto/runtime.cpp @ 0:a61af66fc99e jdk7-b24