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 #ifndef SHARE_VM_RUNTIME_RFRAME_HPP
26 #define SHARE_VM_RUNTIME_RFRAME_HPP
27
28 #include "memory/allocation.hpp"
29 #include "runtime/frame.inline.hpp"
30
31 // rframes ("recompiler frames") decorate stack frames with some extra information
32 // needed by the recompiler. The recompiler views the stack (at the time of recompilation)
33 // as a list of rframes.
34
35 class RFrame : public ResourceObj {
36 protected:
37 const frame _fr; // my frame
38 JavaThread* const _thread; // thread where frame resides.
39 RFrame* _caller; // caller / callee rframes (or NULL)
40 RFrame*const _callee;
41 const int _num; // stack frame number (0 = most recent)
42 int _invocations; // current invocation estimate (for this frame)
43 // (i.e., how often was this frame called)
44 int _distance; // recompilation search "distance" (measured in # of interpreted frames)
45
46 RFrame(frame fr, JavaThread* thread, RFrame*const callee);
47 virtual void init() = 0; // compute invocations, loopDepth, etc.
48 void print(const char* name);
49
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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 #ifndef SHARE_VM_RUNTIME_RFRAME_HPP
26 #define SHARE_VM_RUNTIME_RFRAME_HPP
27
28 #include "memory/allocation.hpp"
29 #include "runtime/frame.hpp"
30
31 // rframes ("recompiler frames") decorate stack frames with some extra information
32 // needed by the recompiler. The recompiler views the stack (at the time of recompilation)
33 // as a list of rframes.
34
35 class RFrame : public ResourceObj {
36 protected:
37 const frame _fr; // my frame
38 JavaThread* const _thread; // thread where frame resides.
39 RFrame* _caller; // caller / callee rframes (or NULL)
40 RFrame*const _callee;
41 const int _num; // stack frame number (0 = most recent)
42 int _invocations; // current invocation estimate (for this frame)
43 // (i.e., how often was this frame called)
44 int _distance; // recompilation search "distance" (measured in # of interpreted frames)
45
46 RFrame(frame fr, JavaThread* thread, RFrame*const callee);
47 virtual void init() = 0; // compute invocations, loopDepth, etc.
48 void print(const char* name);
49
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