src/hotspot/share/runtime/thread.inline.hpp
changeset 47216 71c04702a3d5
parent 46643 cb5f289ba033
child 47881 0ce0ac68ace7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/runtime/thread.inline.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2012, 2017, 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.
+ *
+ */
+
+#ifndef SHARE_VM_RUNTIME_THREAD_INLINE_HPP
+#define SHARE_VM_RUNTIME_THREAD_INLINE_HPP
+
+#define SHARE_VM_RUNTIME_THREAD_INLINE_HPP_SCOPE
+
+#include "runtime/atomic.hpp"
+#include "runtime/os.inline.hpp"
+#include "runtime/thread.hpp"
+
+#undef SHARE_VM_RUNTIME_THREAD_INLINE_HPP_SCOPE
+
+inline void Thread::set_suspend_flag(SuspendFlags f) {
+  assert(sizeof(jint) == sizeof(_suspend_flags), "size mismatch");
+  uint32_t flags;
+  do {
+    flags = _suspend_flags;
+  }
+  while (Atomic::cmpxchg((jint)(flags | f),
+                         (volatile jint*)&_suspend_flags,
+                         (jint)flags) != (jint)flags);
+}
+inline void Thread::clear_suspend_flag(SuspendFlags f) {
+  assert(sizeof(jint) == sizeof(_suspend_flags), "size mismatch");
+  uint32_t flags;
+  do {
+    flags = _suspend_flags;
+  }
+  while (Atomic::cmpxchg((jint)(flags & ~f),
+                         (volatile jint*)&_suspend_flags,
+                         (jint)flags) != (jint)flags);
+}
+
+inline void Thread::set_has_async_exception() {
+  set_suspend_flag(_has_async_exception);
+}
+inline void Thread::clear_has_async_exception() {
+  clear_suspend_flag(_has_async_exception);
+}
+inline void Thread::set_critical_native_unlock() {
+  set_suspend_flag(_critical_native_unlock);
+}
+inline void Thread::clear_critical_native_unlock() {
+  clear_suspend_flag(_critical_native_unlock);
+}
+inline void Thread::set_trace_flag() {
+  set_suspend_flag(_trace_flag);
+}
+inline void Thread::clear_trace_flag() {
+  clear_suspend_flag(_trace_flag);
+}
+
+inline jlong Thread::cooked_allocated_bytes() {
+  jlong allocated_bytes = OrderAccess::load_acquire(&_allocated_bytes);
+  if (UseTLAB) {
+    size_t used_bytes = tlab().used_bytes();
+    if (used_bytes <= ThreadLocalAllocBuffer::max_size_in_bytes()) {
+      // Comparing used_bytes with the maximum allowed size will ensure
+      // that we don't add the used bytes from a semi-initialized TLAB
+      // ending up with incorrect values. There is still a race between
+      // incrementing _allocated_bytes and clearing the TLAB, that might
+      // cause double counting in rare cases.
+      return allocated_bytes + used_bytes;
+    }
+  }
+  return allocated_bytes;
+}
+
+inline void JavaThread::set_ext_suspended() {
+  set_suspend_flag (_ext_suspended);
+}
+inline void JavaThread::clear_ext_suspended() {
+  clear_suspend_flag(_ext_suspended);
+}
+
+inline void JavaThread::set_external_suspend() {
+  set_suspend_flag(_external_suspend);
+}
+inline void JavaThread::clear_external_suspend() {
+  clear_suspend_flag(_external_suspend);
+}
+
+inline void JavaThread::set_deopt_suspend() {
+  set_suspend_flag(_deopt_suspend);
+}
+inline void JavaThread::clear_deopt_suspend() {
+  clear_suspend_flag(_deopt_suspend);
+}
+
+inline void JavaThread::set_pending_async_exception(oop e) {
+  _pending_async_exception = e;
+  _special_runtime_exit_condition = _async_exception;
+  set_has_async_exception();
+}
+
+#if defined(PPC64) || defined (AARCH64)
+inline JavaThreadState JavaThread::thread_state() const    {
+  return (JavaThreadState) OrderAccess::load_acquire((volatile jint*)&_thread_state);
+}
+
+inline void JavaThread::set_thread_state(JavaThreadState s) {
+  OrderAccess::release_store((volatile jint*)&_thread_state, (jint)s);
+}
+#endif
+
+inline void JavaThread::set_done_attaching_via_jni() {
+  _jni_attach_state = _attached_via_jni;
+  OrderAccess::fence();
+}
+
+inline bool JavaThread::stack_guard_zone_unused() {
+  return _stack_guard_state == stack_guard_unused;
+}
+
+inline bool JavaThread::stack_yellow_reserved_zone_disabled() {
+  return _stack_guard_state == stack_guard_yellow_reserved_disabled;
+}
+
+inline bool JavaThread::stack_reserved_zone_disabled() {
+  return _stack_guard_state == stack_guard_reserved_disabled;
+}
+
+inline size_t JavaThread::stack_available(address cur_sp) {
+  // This code assumes java stacks grow down
+  address low_addr; // Limit on the address for deepest stack depth
+  if (_stack_guard_state == stack_guard_unused) {
+    low_addr = stack_end();
+  } else {
+    low_addr = stack_reserved_zone_base();
+  }
+  return cur_sp > low_addr ? cur_sp - low_addr : 0;
+}
+
+inline bool JavaThread::stack_guards_enabled() {
+#ifdef ASSERT
+  if (os::uses_stack_guard_pages()) {
+    assert(_stack_guard_state != stack_guard_unused, "guard pages must be in use");
+  }
+#endif
+  return _stack_guard_state == stack_guard_enabled;
+}
+
+#endif // SHARE_VM_RUNTIME_THREAD_INLINE_HPP