14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/systemDictionary.hpp"
27 #include "gc_implementation/shared/concurrentGCThread.hpp"
28 #include "oops/instanceRefKlass.hpp"
29 #include "oops/oop.inline.hpp"
30 #include "runtime/init.hpp"
31 #include "runtime/interfaceSupport.hpp"
32 #include "runtime/java.hpp"
33 #include "runtime/javaCalls.hpp"
34
35 // CopyrightVersion 1.2
36
37 int ConcurrentGCThread::_CGC_flag = CGC_nil;
38
39 SuspendibleThreadSet ConcurrentGCThread::_sts;
40
41 ConcurrentGCThread::ConcurrentGCThread() :
42 _should_terminate(false), _has_terminated(false) {
43 _sts.initialize();
44 };
45
46 void ConcurrentGCThread::safepoint_synchronize() {
47 _sts.suspend_all();
48 }
49
50 void ConcurrentGCThread::safepoint_desynchronize() {
51 _sts.resume_all();
52 }
53
189 JavaValue result(T_VOID);
190 JavaCalls::call_special(&result, thread_oop,
191 klass,
192 vmSymbols::object_initializer_name(),
193 vmSymbols::threadgroup_string_void_signature(),
194 thread_group,
195 string,
196 CHECK_NULL);
197
198 SurrogateLockerThread* res;
199 {
200 MutexLocker mu(Threads_lock);
201 res = new SurrogateLockerThread();
202
203 // At this point it may be possible that no osthread was created for the
204 // JavaThread due to lack of memory. We would have to throw an exception
205 // in that case. However, since this must work and we do not allow
206 // exceptions anyway, check and abort if this fails.
207 if (res == NULL || res->osthread() == NULL) {
208 vm_exit_during_initialization("java.lang.OutOfMemoryError",
209 "unable to create new native thread");
210 }
211 java_lang_Thread::set_thread(thread_oop(), res);
212 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority);
213 java_lang_Thread::set_daemon(thread_oop());
214
215 res->set_threadObj(thread_oop());
216 Threads::add(res);
217 Thread::start(res);
218 }
219 os::yield(); // This seems to help with initial start-up of SLT
220 return res;
221 }
222
223 void SurrogateLockerThread::manipulatePLL(SLT_msg_type msg) {
224 MutexLockerEx x(&_monitor, Mutex::_no_safepoint_check_flag);
225 assert(_buffer == empty, "Should be empty");
226 assert(msg != empty, "empty message");
227 assert(!Heap_lock->owned_by_self(), "Heap_lock owned by requesting thread");
228
229 _buffer = msg;
|
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/systemDictionary.hpp"
27 #include "gc_implementation/shared/concurrentGCThread.hpp"
28 #include "oops/instanceRefKlass.hpp"
29 #include "oops/oop.inline.hpp"
30 #include "runtime/init.hpp"
31 #include "runtime/interfaceSupport.hpp"
32 #include "runtime/java.hpp"
33 #include "runtime/javaCalls.hpp"
34 #include "runtime/os.hpp"
35
36 // CopyrightVersion 1.2
37
38 int ConcurrentGCThread::_CGC_flag = CGC_nil;
39
40 SuspendibleThreadSet ConcurrentGCThread::_sts;
41
42 ConcurrentGCThread::ConcurrentGCThread() :
43 _should_terminate(false), _has_terminated(false) {
44 _sts.initialize();
45 };
46
47 void ConcurrentGCThread::safepoint_synchronize() {
48 _sts.suspend_all();
49 }
50
51 void ConcurrentGCThread::safepoint_desynchronize() {
52 _sts.resume_all();
53 }
54
190 JavaValue result(T_VOID);
191 JavaCalls::call_special(&result, thread_oop,
192 klass,
193 vmSymbols::object_initializer_name(),
194 vmSymbols::threadgroup_string_void_signature(),
195 thread_group,
196 string,
197 CHECK_NULL);
198
199 SurrogateLockerThread* res;
200 {
201 MutexLocker mu(Threads_lock);
202 res = new SurrogateLockerThread();
203
204 // At this point it may be possible that no osthread was created for the
205 // JavaThread due to lack of memory. We would have to throw an exception
206 // in that case. However, since this must work and we do not allow
207 // exceptions anyway, check and abort if this fails.
208 if (res == NULL || res->osthread() == NULL) {
209 vm_exit_during_initialization("java.lang.OutOfMemoryError",
210 os::native_thread_creation_failed_msg());
211 }
212 java_lang_Thread::set_thread(thread_oop(), res);
213 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority);
214 java_lang_Thread::set_daemon(thread_oop());
215
216 res->set_threadObj(thread_oop());
217 Threads::add(res);
218 Thread::start(res);
219 }
220 os::yield(); // This seems to help with initial start-up of SLT
221 return res;
222 }
223
224 void SurrogateLockerThread::manipulatePLL(SLT_msg_type msg) {
225 MutexLockerEx x(&_monitor, Mutex::_no_safepoint_check_flag);
226 assert(_buffer == empty, "Should be empty");
227 assert(msg != empty, "empty message");
228 assert(!Heap_lock->owned_by_self(), "Heap_lock owned by requesting thread");
229
230 _buffer = msg;
|