1569 if (var->type() == T_OBJECT) {
1570 JVMCIENV->put_object_at(array, i, HotSpotJVMCI::wrap(locals->at(i)->get_obj()()));
1571 }
1572 }
1573 HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, hs_frame, JNI_TRUE);
1574 C2V_END
1575
1576 // Creates a scope where the current thread is attached and detached
1577 // from HotSpot if it wasn't already attached when entering the scope.
1578 extern "C" void jio_printf(const char *fmt, ...);
1579 class AttachDetach : public StackObj {
1580 public:
1581 bool _attached;
1582 AttachDetach(JNIEnv* env, Thread* current_thread) {
1583 if (current_thread == NULL) {
1584 extern struct JavaVM_ main_vm;
1585 JNIEnv* hotspotEnv;
1586 jint res = main_vm.AttachCurrentThread((void**)&hotspotEnv, NULL);
1587 _attached = res == JNI_OK;
1588 static volatile int report_attach_error = 0;
1589 if (res != JNI_OK && report_attach_error == 0 && Atomic::cmpxchg(1, &report_attach_error, 0) == 0) {
1590 // Only report an attach error once
1591 jio_printf("Warning: attaching current thread to VM failed with %d (future attach errors are suppressed)\n", res);
1592 }
1593 } else {
1594 _attached = false;
1595 }
1596 }
1597 ~AttachDetach() {
1598 if (_attached && get_current_thread() != NULL) {
1599 extern struct JavaVM_ main_vm;
1600 jint res = main_vm.DetachCurrentThread();
1601 static volatile int report_detach_error = 0;
1602 if (res != JNI_OK && report_detach_error == 0 && Atomic::cmpxchg(1, &report_detach_error, 0) == 0) {
1603 // Only report an attach error once
1604 jio_printf("Warning: detaching current thread from VM failed with %d (future attach errors are suppressed)\n", res);
1605 }
1606 }
1607 }
1608 };
1609
1610 C2V_VMENTRY_PREFIX(jint, writeDebugOutput, (JNIEnv* env, jobject, jbyteArray bytes, jint offset, jint length, bool flush, bool can_throw))
1611 AttachDetach ad(env, base_thread);
1612 bool use_tty = true;
1613 if (base_thread == NULL) {
1614 if (!ad._attached) {
1615 // Can only use tty if the current thread is attached
1616 return 0;
1617 }
1618 base_thread = get_current_thread();
1619 }
1620 JVMCITraceMark jtm("writeDebugOutput");
1621 assert(base_thread->is_Java_thread(), "just checking");
1622 JavaThread* thread = (JavaThread*) base_thread;
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1569 if (var->type() == T_OBJECT) {
1570 JVMCIENV->put_object_at(array, i, HotSpotJVMCI::wrap(locals->at(i)->get_obj()()));
1571 }
1572 }
1573 HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, hs_frame, JNI_TRUE);
1574 C2V_END
1575
1576 // Creates a scope where the current thread is attached and detached
1577 // from HotSpot if it wasn't already attached when entering the scope.
1578 extern "C" void jio_printf(const char *fmt, ...);
1579 class AttachDetach : public StackObj {
1580 public:
1581 bool _attached;
1582 AttachDetach(JNIEnv* env, Thread* current_thread) {
1583 if (current_thread == NULL) {
1584 extern struct JavaVM_ main_vm;
1585 JNIEnv* hotspotEnv;
1586 jint res = main_vm.AttachCurrentThread((void**)&hotspotEnv, NULL);
1587 _attached = res == JNI_OK;
1588 static volatile int report_attach_error = 0;
1589 if (res != JNI_OK && report_attach_error == 0 && Atomic::cmpxchg(&report_attach_error, 0, 1) == 0) {
1590 // Only report an attach error once
1591 jio_printf("Warning: attaching current thread to VM failed with %d (future attach errors are suppressed)\n", res);
1592 }
1593 } else {
1594 _attached = false;
1595 }
1596 }
1597 ~AttachDetach() {
1598 if (_attached && get_current_thread() != NULL) {
1599 extern struct JavaVM_ main_vm;
1600 jint res = main_vm.DetachCurrentThread();
1601 static volatile int report_detach_error = 0;
1602 if (res != JNI_OK && report_detach_error == 0 && Atomic::cmpxchg(&report_detach_error, 0, 1) == 0) {
1603 // Only report an attach error once
1604 jio_printf("Warning: detaching current thread from VM failed with %d (future attach errors are suppressed)\n", res);
1605 }
1606 }
1607 }
1608 };
1609
1610 C2V_VMENTRY_PREFIX(jint, writeDebugOutput, (JNIEnv* env, jobject, jbyteArray bytes, jint offset, jint length, bool flush, bool can_throw))
1611 AttachDetach ad(env, base_thread);
1612 bool use_tty = true;
1613 if (base_thread == NULL) {
1614 if (!ad._attached) {
1615 // Can only use tty if the current thread is attached
1616 return 0;
1617 }
1618 base_thread = get_current_thread();
1619 }
1620 JVMCITraceMark jtm("writeDebugOutput");
1621 assert(base_thread->is_Java_thread(), "just checking");
1622 JavaThread* thread = (JavaThread*) base_thread;
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