aoqi@0: /*
dbuck@9562:  * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #ifndef SHARE_VM_RUNTIME_INTERFACESUPPORT_HPP
aoqi@0: #define SHARE_VM_RUNTIME_INTERFACESUPPORT_HPP
aoqi@0: 
aoqi@0: #include "memory/gcLocker.hpp"
aoqi@0: #include "runtime/handles.inline.hpp"
aoqi@0: #include "runtime/mutexLocker.hpp"
aoqi@0: #include "runtime/orderAccess.hpp"
aoqi@0: #include "runtime/os.hpp"
aoqi@0: #include "runtime/safepoint.hpp"
aoqi@0: #include "runtime/thread.inline.hpp"
aoqi@0: #include "runtime/vmThread.hpp"
aoqi@0: #include "utilities/globalDefinitions.hpp"
aoqi@0: #include "utilities/preserveException.hpp"
aoqi@0: #include "utilities/top.hpp"
aoqi@0: 
aoqi@0: // Wrapper for all entry points to the virtual machine.
aoqi@0: // The HandleMarkCleaner is a faster version of HandleMark.
aoqi@0: // It relies on the fact that there is a HandleMark further
aoqi@0: // down the stack (in JavaCalls::call_helper), and just resets
aoqi@0: // to the saved values in that HandleMark.
aoqi@0: 
aoqi@0: class HandleMarkCleaner: public StackObj {
aoqi@0:  private:
aoqi@0:   Thread* _thread;
aoqi@0:  public:
aoqi@0:   HandleMarkCleaner(Thread* thread) {
aoqi@0:     _thread = thread;
aoqi@0:     _thread->last_handle_mark()->push();
aoqi@0:   }
aoqi@0:   ~HandleMarkCleaner() {
aoqi@0:     _thread->last_handle_mark()->pop_and_restore();
aoqi@0:   }
aoqi@0: 
aoqi@0:  private:
aoqi@0:   inline void* operator new(size_t size, void* ptr) throw() {
aoqi@0:     return ptr;
aoqi@0:   }
aoqi@0: };
aoqi@0: 
aoqi@0: // InterfaceSupport provides functionality used by the VM_LEAF_BASE and
aoqi@0: // VM_ENTRY_BASE macros. These macros are used to guard entry points into
aoqi@0: // the VM and perform checks upon leave of the VM.
aoqi@0: 
aoqi@0: 
aoqi@0: class InterfaceSupport: AllStatic {
aoqi@0: # ifdef ASSERT
aoqi@0:  public:
aoqi@0:   static long _scavenge_alot_counter;
aoqi@0:   static long _fullgc_alot_counter;
aoqi@0:   static long _number_of_calls;
aoqi@0:   static long _fullgc_alot_invocation;
aoqi@0: 
aoqi@0:   // tracing
aoqi@0:   static void trace(const char* result_type, const char* header);
aoqi@0: 
aoqi@0:   // Helper methods used to implement +ScavengeALot and +FullGCALot
aoqi@0:   static void check_gc_alot() { if (ScavengeALot || FullGCALot) gc_alot(); }
aoqi@0:   static void gc_alot();
aoqi@0: 
aoqi@0:   static void walk_stack_from(vframe* start_vf);
aoqi@0:   static void walk_stack();
aoqi@0: 
aoqi@0: # ifdef ENABLE_ZAP_DEAD_LOCALS
aoqi@0:   static void zap_dead_locals_old();
aoqi@0: # endif
aoqi@0: 
aoqi@0:   static void zombieAll();
aoqi@0:   static void unlinkSymbols();
aoqi@0:   static void deoptimizeAll();
aoqi@0:   static void stress_derived_pointers();
aoqi@0:   static void verify_stack();
aoqi@0:   static void verify_last_frame();
aoqi@0: # endif
aoqi@0: 
aoqi@0:  public:
aoqi@0:   // OS dependent stuff
aoqi@0: #ifdef TARGET_OS_FAMILY_linux
aoqi@0: # include "interfaceSupport_linux.hpp"
aoqi@0: #endif
aoqi@0: #ifdef TARGET_OS_FAMILY_solaris
aoqi@0: # include "interfaceSupport_solaris.hpp"
aoqi@0: #endif
aoqi@0: #ifdef TARGET_OS_FAMILY_windows
aoqi@0: # include "interfaceSupport_windows.hpp"
aoqi@0: #endif
aoqi@0: #ifdef TARGET_OS_FAMILY_aix
aoqi@0: # include "interfaceSupport_aix.hpp"
aoqi@0: #endif
aoqi@0: #ifdef TARGET_OS_FAMILY_bsd
aoqi@0: # include "interfaceSupport_bsd.hpp"
aoqi@0: #endif
aoqi@0: 
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: // Basic class for all thread transition classes.
aoqi@0: 
aoqi@0: class ThreadStateTransition : public StackObj {
aoqi@0:  protected:
aoqi@0:   JavaThread* _thread;
aoqi@0:  public:
aoqi@0:   ThreadStateTransition(JavaThread *thread) {
aoqi@0:     _thread = thread;
aoqi@0:     assert(thread != NULL && thread->is_Java_thread(), "must be Java thread");
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Change threadstate in a manner, so safepoint can detect changes.
aoqi@0:   // Time-critical: called on exit from every runtime routine
aoqi@0:   static inline void transition(JavaThread *thread, JavaThreadState from, JavaThreadState to) {
aoqi@0:     assert(from != _thread_in_Java, "use transition_from_java");
aoqi@0:     assert(from != _thread_in_native, "use transition_from_native");
aoqi@0:     assert((from & 1) == 0 && (to & 1) == 0, "odd numbers are transitions states");
aoqi@0:     assert(thread->thread_state() == from, "coming from wrong thread state");
aoqi@0:     // Change to transition state (assumes total store ordering!  -Urs)
aoqi@0:     thread->set_thread_state((JavaThreadState)(from + 1));
aoqi@0: 
aoqi@0:     // Make sure new state is seen by VM thread
aoqi@0:     if (os::is_MP()) {
aoqi@0:       if (UseMembar) {
aoqi@0:         // Force a fence between the write above and read below
aoqi@0:         OrderAccess::fence();
aoqi@0:       } else {
aoqi@0:         // store to serialize page so VM thread can do pseudo remote membar
aoqi@0:         os::write_memory_serialize_page(thread);
aoqi@0:       }
aoqi@0:     }
aoqi@0: 
aoqi@0:     if (SafepointSynchronize::do_call_back()) {
aoqi@0:       SafepointSynchronize::block(thread);
aoqi@0:     }
aoqi@0:     thread->set_thread_state(to);
aoqi@0: 
aoqi@0:     CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();)
aoqi@0:   }
aoqi@0: 
aoqi@0:   // transition_and_fence must be used on any thread state transition
aoqi@0:   // where there might not be a Java call stub on the stack, in
aoqi@0:   // particular on Windows where the Structured Exception Handler is
aoqi@0:   // set up in the call stub. os::write_memory_serialize_page() can
aoqi@0:   // fault and we can't recover from it on Windows without a SEH in
aoqi@0:   // place.
aoqi@0:   static inline void transition_and_fence(JavaThread *thread, JavaThreadState from, JavaThreadState to) {
aoqi@0:     assert(thread->thread_state() == from, "coming from wrong thread state");
aoqi@0:     assert((from & 1) == 0 && (to & 1) == 0, "odd numbers are transitions states");
aoqi@0:     // Change to transition state (assumes total store ordering!  -Urs)
aoqi@0:     thread->set_thread_state((JavaThreadState)(from + 1));
aoqi@0: 
aoqi@0:     // Make sure new state is seen by VM thread
aoqi@0:     if (os::is_MP()) {
aoqi@0:       if (UseMembar) {
aoqi@0:         // Force a fence between the write above and read below
aoqi@0:         OrderAccess::fence();
aoqi@0:       } else {
aoqi@0:         // Must use this rather than serialization page in particular on Windows
aoqi@0:         InterfaceSupport::serialize_memory(thread);
aoqi@0:       }
aoqi@0:     }
aoqi@0: 
aoqi@0:     if (SafepointSynchronize::do_call_back()) {
aoqi@0:       SafepointSynchronize::block(thread);
aoqi@0:     }
aoqi@0:     thread->set_thread_state(to);
aoqi@0: 
aoqi@0:     CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();)
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Same as above, but assumes from = _thread_in_Java. This is simpler, since we
aoqi@0:   // never block on entry to the VM. This will break the code, since e.g. preserve arguments
aoqi@0:   // have not been setup.
aoqi@0:   static inline void transition_from_java(JavaThread *thread, JavaThreadState to) {
aoqi@0:     assert(thread->thread_state() == _thread_in_Java, "coming from wrong thread state");
aoqi@0:     thread->set_thread_state(to);
aoqi@0:   }
aoqi@0: 
aoqi@0:   static inline void transition_from_native(JavaThread *thread, JavaThreadState to) {
aoqi@0:     assert((to & 1) == 0, "odd numbers are transitions states");
aoqi@0:     assert(thread->thread_state() == _thread_in_native, "coming from wrong thread state");
aoqi@0:     // Change to transition state (assumes total store ordering!  -Urs)
aoqi@0:     thread->set_thread_state(_thread_in_native_trans);
aoqi@0: 
aoqi@0:     // Make sure new state is seen by GC thread
aoqi@0:     if (os::is_MP()) {
aoqi@0:       if (UseMembar) {
aoqi@0:         // Force a fence between the write above and read below
aoqi@0:         OrderAccess::fence();
aoqi@0:       } else {
aoqi@0:         // Must use this rather than serialization page in particular on Windows
aoqi@0:         InterfaceSupport::serialize_memory(thread);
aoqi@0:       }
aoqi@0:     }
aoqi@0: 
aoqi@0:     // We never install asynchronous exceptions when coming (back) in
aoqi@0:     // to the runtime from native code because the runtime is not set
aoqi@0:     // up to handle exceptions floating around at arbitrary points.
aoqi@0:     if (SafepointSynchronize::do_call_back() || thread->is_suspend_after_native()) {
aoqi@0:       JavaThread::check_safepoint_and_suspend_for_native_trans(thread);
aoqi@0: 
aoqi@0:       // Clear unhandled oops anywhere where we could block, even if we don't.
aoqi@0:       CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();)
aoqi@0:     }
aoqi@0: 
aoqi@0:     thread->set_thread_state(to);
aoqi@0:   }
aoqi@0:  protected:
aoqi@0:    void trans(JavaThreadState from, JavaThreadState to)  { transition(_thread, from, to); }
aoqi@0:    void trans_from_java(JavaThreadState to)              { transition_from_java(_thread, to); }
aoqi@0:    void trans_from_native(JavaThreadState to)            { transition_from_native(_thread, to); }
aoqi@0:    void trans_and_fence(JavaThreadState from, JavaThreadState to) { transition_and_fence(_thread, from, to); }
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: class ThreadInVMfromJava : public ThreadStateTransition {
aoqi@0:  public:
aoqi@0:   ThreadInVMfromJava(JavaThread* thread) : ThreadStateTransition(thread) {
aoqi@0:     trans_from_java(_thread_in_vm);
aoqi@0:   }
aoqi@0:   ~ThreadInVMfromJava()  {
aoqi@0:     trans(_thread_in_vm, _thread_in_Java);
aoqi@0:     // Check for pending. async. exceptions or suspends.
aoqi@0:     if (_thread->has_special_runtime_exit_condition()) _thread->handle_special_runtime_exit_condition();
aoqi@0:   }
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: class ThreadInVMfromUnknown {
aoqi@0:  private:
aoqi@0:   JavaThread* _thread;
aoqi@0:  public:
aoqi@0:   ThreadInVMfromUnknown() : _thread(NULL) {
aoqi@0:     Thread* t = Thread::current();
aoqi@0:     if (t->is_Java_thread()) {
aoqi@0:       JavaThread* t2 = (JavaThread*) t;
aoqi@0:       if (t2->thread_state() == _thread_in_native) {
aoqi@0:         _thread = t2;
aoqi@0:         ThreadStateTransition::transition_from_native(t2, _thread_in_vm);
aoqi@0:         // Used to have a HandleMarkCleaner but that is dangerous as
aoqi@0:         // it could free a handle in our (indirect, nested) caller.
aoqi@0:         // We expect any handles will be short lived and figure we
aoqi@0:         // don't need an actual HandleMark.
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0:   ~ThreadInVMfromUnknown()  {
aoqi@0:     if (_thread) {
aoqi@0:       ThreadStateTransition::transition_and_fence(_thread, _thread_in_vm, _thread_in_native);
aoqi@0:     }
aoqi@0:   }
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: class ThreadInVMfromNative : public ThreadStateTransition {
aoqi@0:  public:
aoqi@0:   ThreadInVMfromNative(JavaThread* thread) : ThreadStateTransition(thread) {
aoqi@0:     trans_from_native(_thread_in_vm);
aoqi@0:   }
aoqi@0:   ~ThreadInVMfromNative() {
aoqi@0:     trans_and_fence(_thread_in_vm, _thread_in_native);
aoqi@0:   }
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: class ThreadToNativeFromVM : public ThreadStateTransition {
aoqi@0:  public:
aoqi@0:   ThreadToNativeFromVM(JavaThread *thread) : ThreadStateTransition(thread) {
aoqi@0:     // We are leaving the VM at this point and going directly to native code.
aoqi@0:     // Block, if we are in the middle of a safepoint synchronization.
aoqi@0:     assert(!thread->owns_locks(), "must release all locks when leaving VM");
aoqi@0:     thread->frame_anchor()->make_walkable(thread);
aoqi@0:     trans_and_fence(_thread_in_vm, _thread_in_native);
aoqi@0:     // Check for pending. async. exceptions or suspends.
aoqi@0:     if (_thread->has_special_runtime_exit_condition()) _thread->handle_special_runtime_exit_condition(false);
aoqi@0:   }
aoqi@0: 
aoqi@0:   ~ThreadToNativeFromVM() {
aoqi@0:     trans_from_native(_thread_in_vm);
aoqi@0:     // We don't need to clear_walkable because it will happen automagically when we return to java
aoqi@0:   }
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: class ThreadBlockInVM : public ThreadStateTransition {
aoqi@0:  public:
aoqi@0:   ThreadBlockInVM(JavaThread *thread)
aoqi@0:   : ThreadStateTransition(thread) {
aoqi@0:     // Once we are blocked vm expects stack to be walkable
aoqi@0:     thread->frame_anchor()->make_walkable(thread);
aoqi@0:     trans_and_fence(_thread_in_vm, _thread_blocked);
aoqi@0:   }
aoqi@0:   ~ThreadBlockInVM() {
aoqi@0:     trans_and_fence(_thread_blocked, _thread_in_vm);
aoqi@0:     // We don't need to clear_walkable because it will happen automagically when we return to java
aoqi@0:   }
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: // This special transition class is only used to prevent asynchronous exceptions
aoqi@0: // from being installed on vm exit in situations where we can't tolerate them.
aoqi@0: // See bugs: 4324348, 4854693, 4998314, 5040492, 5050705.
aoqi@0: class ThreadInVMfromJavaNoAsyncException : public ThreadStateTransition {
aoqi@0:  public:
aoqi@0:   ThreadInVMfromJavaNoAsyncException(JavaThread* thread) : ThreadStateTransition(thread) {
aoqi@0:     trans_from_java(_thread_in_vm);
aoqi@0:   }
aoqi@0:   ~ThreadInVMfromJavaNoAsyncException()  {
aoqi@0:     trans(_thread_in_vm, _thread_in_Java);
aoqi@0:     // NOTE: We do not check for pending. async. exceptions.
aoqi@0:     // If we did and moved the pending async exception over into the
aoqi@0:     // pending exception field, we would need to deopt (currently C2
aoqi@0:     // only). However, to do so would require that we transition back
aoqi@0:     // to the _thread_in_vm state. Instead we postpone the handling of
aoqi@0:     // the async exception.
aoqi@0: 
aoqi@0:     // Check for pending. suspends only.
aoqi@0:     if (_thread->has_special_runtime_exit_condition())
aoqi@0:       _thread->handle_special_runtime_exit_condition(false);
aoqi@0:   }
aoqi@0: };
aoqi@0: 
aoqi@0: // Debug class instantiated in JRT_ENTRY and ITR_ENTRY macro.
aoqi@0: // Can be used to verify properties on enter/exit of the VM.
aoqi@0: 
aoqi@0: #ifdef ASSERT
aoqi@0: class VMEntryWrapper {
aoqi@0:  public:
aoqi@0:   VMEntryWrapper() {
aoqi@0:     if (VerifyLastFrame) {
aoqi@0:       InterfaceSupport::verify_last_frame();
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   ~VMEntryWrapper() {
aoqi@0:     InterfaceSupport::check_gc_alot();
aoqi@0:     if (WalkStackALot) {
aoqi@0:       InterfaceSupport::walk_stack();
aoqi@0:     }
aoqi@0: #ifdef ENABLE_ZAP_DEAD_LOCALS
aoqi@0:     if (ZapDeadLocalsOld) {
aoqi@0:       InterfaceSupport::zap_dead_locals_old();
aoqi@0:     }
aoqi@0: #endif
aoqi@0: #ifdef COMPILER2
aoqi@0:     // This option is not used by Compiler 1
aoqi@0:     if (StressDerivedPointers) {
aoqi@0:       InterfaceSupport::stress_derived_pointers();
aoqi@0:     }
aoqi@0: #endif
aoqi@0:     if (DeoptimizeALot || DeoptimizeRandom) {
aoqi@0:       InterfaceSupport::deoptimizeAll();
aoqi@0:     }
aoqi@0:     if (ZombieALot) {
aoqi@0:       InterfaceSupport::zombieAll();
aoqi@0:     }
aoqi@0:     if (UnlinkSymbolsALot) {
aoqi@0:       InterfaceSupport::unlinkSymbols();
aoqi@0:     }
aoqi@0:     // do verification AFTER potential deoptimization
aoqi@0:     if (VerifyStack) {
aoqi@0:       InterfaceSupport::verify_stack();
aoqi@0:     }
aoqi@0: 
aoqi@0:   }
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: class VMNativeEntryWrapper {
aoqi@0:  public:
aoqi@0:   VMNativeEntryWrapper() {
aoqi@0:     if (GCALotAtAllSafepoints) InterfaceSupport::check_gc_alot();
aoqi@0:   }
aoqi@0: 
aoqi@0:   ~VMNativeEntryWrapper() {
aoqi@0:     if (GCALotAtAllSafepoints) InterfaceSupport::check_gc_alot();
aoqi@0:   }
aoqi@0: };
aoqi@0: 
aoqi@0: #endif
aoqi@0: 
aoqi@0: 
aoqi@0: // VM-internal runtime interface support
aoqi@0: 
aoqi@0: #ifdef ASSERT
aoqi@0: 
aoqi@0: class RuntimeHistogramElement : public HistogramElement {
aoqi@0:   public:
aoqi@0:    RuntimeHistogramElement(const char* name);
aoqi@0: };
aoqi@0: 
aoqi@0: #define TRACE_CALL(result_type, header)                            \
aoqi@0:   InterfaceSupport::_number_of_calls++;                            \
aoqi@0:   if (TraceRuntimeCalls)                                           \
aoqi@0:     InterfaceSupport::trace(#result_type, #header);                \
aoqi@0:   if (CountRuntimeCalls) {                                         \
aoqi@0:     static RuntimeHistogramElement* e = new RuntimeHistogramElement(#header); \
aoqi@0:     if (e != NULL) e->increment_count();                           \
aoqi@0:   }
aoqi@0: #else
aoqi@0: #define TRACE_CALL(result_type, header)                            \
aoqi@0:   /* do nothing */
aoqi@0: #endif
aoqi@0: 
aoqi@0: 
aoqi@0: // LEAF routines do not lock, GC or throw exceptions
aoqi@0: 
aoqi@0: #define VM_LEAF_BASE(result_type, header)                            \
aoqi@0:   TRACE_CALL(result_type, header)                                    \
aoqi@0:   debug_only(NoHandleMark __hm;)                                     \
aoqi@0:   os::verify_stack_alignment();                                      \
aoqi@0:   /* begin of body */
aoqi@0: 
dbuck@9562: #define VM_ENTRY_BASE_FROM_LEAF(result_type, header, thread)         \
dbuck@9562:   TRACE_CALL(result_type, header)                                    \
dbuck@9562:   debug_only(ResetNoHandleMark __rnhm;)                              \
dbuck@9562:   HandleMarkCleaner __hm(thread);                                    \
dbuck@9562:   Thread* THREAD = thread;                                           \
dbuck@9562:   os::verify_stack_alignment();                                      \
dbuck@9562:   /* begin of body */
dbuck@9562: 
aoqi@0: 
aoqi@0: // ENTRY routines may lock, GC and throw exceptions
aoqi@0: 
aoqi@0: #define VM_ENTRY_BASE(result_type, header, thread)                   \
aoqi@0:   TRACE_CALL(result_type, header)                                    \
aoqi@0:   HandleMarkCleaner __hm(thread);                                    \
aoqi@0:   Thread* THREAD = thread;                                           \
aoqi@0:   os::verify_stack_alignment();                                      \
aoqi@0:   /* begin of body */
aoqi@0: 
aoqi@0: 
aoqi@0: // QUICK_ENTRY routines behave like ENTRY but without a handle mark
aoqi@0: 
aoqi@0: #define VM_QUICK_ENTRY_BASE(result_type, header, thread)             \
aoqi@0:   TRACE_CALL(result_type, header)                                    \
aoqi@0:   debug_only(NoHandleMark __hm;)                                     \
aoqi@0:   Thread* THREAD = thread;                                           \
aoqi@0:   os::verify_stack_alignment();                                      \
aoqi@0:   /* begin of body */
aoqi@0: 
aoqi@0: 
aoqi@0: // Definitions for IRT (Interpreter Runtime)
aoqi@0: // (thread is an argument passed in to all these routines)
aoqi@0: 
aoqi@0: #define IRT_ENTRY(result_type, header)                               \
aoqi@0:   result_type header {                                               \
aoqi@0:     ThreadInVMfromJava __tiv(thread);                                \
aoqi@0:     VM_ENTRY_BASE(result_type, header, thread)                       \
aoqi@0:     debug_only(VMEntryWrapper __vew;)
aoqi@0: 
aoqi@0: 
aoqi@0: #define IRT_LEAF(result_type, header)                                \
aoqi@0:   result_type header {                                               \
aoqi@0:     VM_LEAF_BASE(result_type, header)                                \
aoqi@0:     debug_only(No_Safepoint_Verifier __nspv(true);)
aoqi@0: 
aoqi@0: 
aoqi@0: #define IRT_ENTRY_NO_ASYNC(result_type, header)                      \
aoqi@0:   result_type header {                                               \
aoqi@0:     ThreadInVMfromJavaNoAsyncException __tiv(thread);                \
aoqi@0:     VM_ENTRY_BASE(result_type, header, thread)                       \
aoqi@0:     debug_only(VMEntryWrapper __vew;)
aoqi@0: 
aoqi@0: #define IRT_END }
aoqi@0: 
aoqi@0: 
aoqi@0: // Definitions for JRT (Java (Compiler/Shared) Runtime)
aoqi@0: 
aoqi@0: #define JRT_ENTRY(result_type, header)                               \
aoqi@0:   result_type header {                                               \
aoqi@0:     ThreadInVMfromJava __tiv(thread);                                \
aoqi@0:     VM_ENTRY_BASE(result_type, header, thread)                       \
aoqi@0:     debug_only(VMEntryWrapper __vew;)
aoqi@0: 
aoqi@0: 
aoqi@0: #define JRT_LEAF(result_type, header)                                \
aoqi@0:   result_type header {                                               \
aoqi@0:   VM_LEAF_BASE(result_type, header)                                  \
aoqi@0:   debug_only(JRT_Leaf_Verifier __jlv;)
aoqi@0: 
aoqi@0: 
aoqi@0: #define JRT_ENTRY_NO_ASYNC(result_type, header)                      \
aoqi@0:   result_type header {                                               \
aoqi@0:     ThreadInVMfromJavaNoAsyncException __tiv(thread);                \
aoqi@0:     VM_ENTRY_BASE(result_type, header, thread)                       \
aoqi@0:     debug_only(VMEntryWrapper __vew;)
aoqi@0: 
aoqi@0: // Same as JRT Entry but allows for return value after the safepoint
aoqi@0: // to get back into Java from the VM
aoqi@0: #define JRT_BLOCK_ENTRY(result_type, header)                         \
aoqi@0:   result_type header {                                               \
aoqi@0:     TRACE_CALL(result_type, header)                                  \
aoqi@0:     HandleMarkCleaner __hm(thread);
aoqi@0: 
aoqi@0: #define JRT_BLOCK                                                    \
aoqi@0:     {                                                                \
aoqi@0:     ThreadInVMfromJava __tiv(thread);                                \
aoqi@0:     Thread* THREAD = thread;                                         \
aoqi@0:     debug_only(VMEntryWrapper __vew;)
aoqi@0: 
aoqi@0: #define JRT_BLOCK_END }
aoqi@0: 
aoqi@0: #define JRT_END }
aoqi@0: 
aoqi@0: // Definitions for JNI
aoqi@0: 
aoqi@0: #define JNI_ENTRY(result_type, header)                               \
aoqi@0:     JNI_ENTRY_NO_PRESERVE(result_type, header)                       \
aoqi@0:     WeakPreserveExceptionMark __wem(thread);
aoqi@0: 
aoqi@0: #define JNI_ENTRY_NO_PRESERVE(result_type, header)             \
aoqi@0: extern "C" {                                                         \
aoqi@0:   result_type JNICALL header {                                \
aoqi@0:     JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
aoqi@0:     assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \
aoqi@0:     ThreadInVMfromNative __tiv(thread);                              \
aoqi@0:     debug_only(VMNativeEntryWrapper __vew;)                          \
aoqi@0:     VM_ENTRY_BASE(result_type, header, thread)
aoqi@0: 
aoqi@0: 
aoqi@0: // Ensure that the VMNativeEntryWrapper constructor, which can cause
aoqi@0: // a GC, is called outside the NoHandleMark (set via VM_QUICK_ENTRY_BASE).
aoqi@0: #define JNI_QUICK_ENTRY(result_type, header)                         \
aoqi@0: extern "C" {                                                         \
aoqi@0:   result_type JNICALL header {                                \
aoqi@0:     JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
aoqi@0:     assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \
aoqi@0:     ThreadInVMfromNative __tiv(thread);                              \
aoqi@0:     debug_only(VMNativeEntryWrapper __vew;)                          \
aoqi@0:     VM_QUICK_ENTRY_BASE(result_type, header, thread)
aoqi@0: 
aoqi@0: 
aoqi@0: #define JNI_LEAF(result_type, header)                                \
aoqi@0: extern "C" {                                                         \
aoqi@0:   result_type JNICALL header {                                \
aoqi@0:     JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
aoqi@0:     assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \
aoqi@0:     VM_LEAF_BASE(result_type, header)
aoqi@0: 
aoqi@0: 
aoqi@0: // Close the routine and the extern "C"
aoqi@0: #define JNI_END } }
aoqi@0: 
aoqi@0: 
aoqi@0: 
aoqi@0: // Definitions for JVM
aoqi@0: 
aoqi@0: #define JVM_ENTRY(result_type, header)                               \
aoqi@0: extern "C" {                                                         \
aoqi@0:   result_type JNICALL header {                                       \
aoqi@0:     JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
aoqi@0:     ThreadInVMfromNative __tiv(thread);                              \
aoqi@0:     debug_only(VMNativeEntryWrapper __vew;)                          \
aoqi@0:     VM_ENTRY_BASE(result_type, header, thread)
aoqi@0: 
aoqi@0: 
aoqi@0: #define JVM_ENTRY_NO_ENV(result_type, header)                        \
aoqi@0: extern "C" {                                                         \
aoqi@0:   result_type JNICALL header {                                       \
aoqi@0:     JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread();  \
aoqi@0:     ThreadInVMfromNative __tiv(thread);                              \
aoqi@0:     debug_only(VMNativeEntryWrapper __vew;)                          \
aoqi@0:     VM_ENTRY_BASE(result_type, header, thread)
aoqi@0: 
aoqi@0: 
aoqi@0: #define JVM_QUICK_ENTRY(result_type, header)                         \
aoqi@0: extern "C" {                                                         \
aoqi@0:   result_type JNICALL header {                                       \
aoqi@0:     JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
aoqi@0:     ThreadInVMfromNative __tiv(thread);                              \
aoqi@0:     debug_only(VMNativeEntryWrapper __vew;)                          \
aoqi@0:     VM_QUICK_ENTRY_BASE(result_type, header, thread)
aoqi@0: 
aoqi@0: 
aoqi@0: #define JVM_LEAF(result_type, header)                                \
aoqi@0: extern "C" {                                                         \
aoqi@0:   result_type JNICALL header {                                       \
aoqi@0:     VM_Exit::block_if_vm_exited();                                   \
aoqi@0:     VM_LEAF_BASE(result_type, header)
aoqi@0: 
aoqi@0: 
dbuck@9562: #define JVM_ENTRY_FROM_LEAF(env, result_type, header)                \
dbuck@9562:   { {                                                                \
dbuck@9562:     JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
dbuck@9562:     ThreadInVMfromNative __tiv(thread);                              \
dbuck@9562:     debug_only(VMNativeEntryWrapper __vew;)                          \
dbuck@9562:     VM_ENTRY_BASE_FROM_LEAF(result_type, header, thread)
dbuck@9562: 
dbuck@9562: 
aoqi@0: #define JVM_END } }
aoqi@0: 
aoqi@0: #endif // SHARE_VM_RUNTIME_INTERFACESUPPORT_HPP