6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
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 "runtime/interfaceSupport.hpp"
27 #include "runtime/os.hpp"
28 #include "services/attachListener.hpp"
29 #include "services/dtraceAttacher.hpp"
30
31 #include <windows.h>
32 #include <signal.h> // SIGBREAK
33 #include <stdio.h>
34
35 // The AttachListener thread services a queue of operations. It blocks in the dequeue
36 // function until an operation is enqueued. A client enqueues an operation by creating
37 // a thread in this process using the Win32 CreateRemoteThread function. That thread
38 // executes a small stub generated by the client. The stub invokes the
39 // JVM_EnqueueOperation function which checks the operation parameters and enqueues
40 // the operation to the queue serviced by the attach listener. The thread created by
41 // the client is a native thread and is restricted to a single page of stack. To keep
42 // it simple operations are pre-allocated at initialization time. An enqueue thus
43 // takes a preallocated operation, populates the operation parameters, adds it to
44 // queue and wakes up the attach listener.
45 //
46 // When an operation has completed the attach listener is required to send the
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6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
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 "runtime/interfaceSupport.inline.hpp"
27 #include "runtime/os.hpp"
28 #include "services/attachListener.hpp"
29 #include "services/dtraceAttacher.hpp"
30
31 #include <windows.h>
32 #include <signal.h> // SIGBREAK
33 #include <stdio.h>
34
35 // The AttachListener thread services a queue of operations. It blocks in the dequeue
36 // function until an operation is enqueued. A client enqueues an operation by creating
37 // a thread in this process using the Win32 CreateRemoteThread function. That thread
38 // executes a small stub generated by the client. The stub invokes the
39 // JVM_EnqueueOperation function which checks the operation parameters and enqueues
40 // the operation to the queue serviced by the attach listener. The thread created by
41 // the client is a native thread and is restricted to a single page of stack. To keep
42 // it simple operations are pre-allocated at initialization time. An enqueue thus
43 // takes a preallocated operation, populates the operation parameters, adds it to
44 // queue and wakes up the attach listener.
45 //
46 // When an operation has completed the attach listener is required to send the
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