5 * This code is free software; you can redistribute it and/or modify it
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 class CompileTask;
26 class CompileQueue;
27
28 class SimpleThresholdPolicy : public CompilationPolicy {
29 int _c1_count, _c2_count;
30
31 // Check if the counter is big enough and set carry (effectively infinity).
32 inline void set_carry_if_necessary(InvocationCounter *counter);
33 // Set carry flags in the counters (in methodOop and MDO).
34 inline void handle_counter_overflow(methodOop method);
35 // Call and loop predicates determine whether a transition to a higher compilation
36 // level should be performed (pointers to predicate functions are passed to common_TF().
37 // Predicates also take compiler load into account.
38 typedef bool (SimpleThresholdPolicy::*Predicate)(int i, int b, CompLevel cur_level);
39 bool call_predicate(int i, int b, CompLevel cur_level);
40 bool loop_predicate(int i, int b, CompLevel cur_level);
41 // Common transition function. Given a predicate determines if a method should transition to another level.
42 CompLevel common(Predicate p, methodOop method, CompLevel cur_level);
43 // Transition functions.
44 // call_event determines if a method should be compiled at a different
88 virtual int compiler_count(CompLevel comp_level) {
89 if (is_c1_compile(comp_level)) return c1_count();
90 if (is_c2_compile(comp_level)) return c2_count();
91 return 0;
92 }
93 virtual void do_safepoint_work() { }
94 virtual void delay_compilation(methodOop method) { }
95 virtual void disable_compilation(methodOop method) { }
96 // TODO: we should honour reprofiling requests in the future. Currently reprofiling
97 // would happen but not to the extent we would ideally like.
98 virtual void reprofile(ScopeDesc* trap_scope, bool is_osr) { }
99 virtual nmethod* event(methodHandle method, methodHandle inlinee,
100 int branch_bci, int bci, CompLevel comp_level, TRAPS);
101 // Select task is called by CompileBroker. We should return a task or NULL.
102 virtual CompileTask* select_task(CompileQueue* compile_queue);
103 // Tell the runtime if we think a given method is adequately profiled.
104 virtual bool is_mature(methodOop method);
105 // Initialize: set compiler thread count
106 virtual void initialize();
107 };
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5 * This code is free software; you can redistribute it and/or modify it
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 #ifndef SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_HPP
26 #define SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_HPP
27
28 #include "code/nmethod.hpp"
29 #include "oops/methodDataOop.hpp"
30 #include "runtime/compilationPolicy.hpp"
31 #include "utilities/globalDefinitions.hpp"
32
33 class CompileTask;
34 class CompileQueue;
35
36 class SimpleThresholdPolicy : public CompilationPolicy {
37 int _c1_count, _c2_count;
38
39 // Check if the counter is big enough and set carry (effectively infinity).
40 inline void set_carry_if_necessary(InvocationCounter *counter);
41 // Set carry flags in the counters (in methodOop and MDO).
42 inline void handle_counter_overflow(methodOop method);
43 // Call and loop predicates determine whether a transition to a higher compilation
44 // level should be performed (pointers to predicate functions are passed to common_TF().
45 // Predicates also take compiler load into account.
46 typedef bool (SimpleThresholdPolicy::*Predicate)(int i, int b, CompLevel cur_level);
47 bool call_predicate(int i, int b, CompLevel cur_level);
48 bool loop_predicate(int i, int b, CompLevel cur_level);
49 // Common transition function. Given a predicate determines if a method should transition to another level.
50 CompLevel common(Predicate p, methodOop method, CompLevel cur_level);
51 // Transition functions.
52 // call_event determines if a method should be compiled at a different
96 virtual int compiler_count(CompLevel comp_level) {
97 if (is_c1_compile(comp_level)) return c1_count();
98 if (is_c2_compile(comp_level)) return c2_count();
99 return 0;
100 }
101 virtual void do_safepoint_work() { }
102 virtual void delay_compilation(methodOop method) { }
103 virtual void disable_compilation(methodOop method) { }
104 // TODO: we should honour reprofiling requests in the future. Currently reprofiling
105 // would happen but not to the extent we would ideally like.
106 virtual void reprofile(ScopeDesc* trap_scope, bool is_osr) { }
107 virtual nmethod* event(methodHandle method, methodHandle inlinee,
108 int branch_bci, int bci, CompLevel comp_level, TRAPS);
109 // Select task is called by CompileBroker. We should return a task or NULL.
110 virtual CompileTask* select_task(CompileQueue* compile_queue);
111 // Tell the runtime if we think a given method is adequately profiled.
112 virtual bool is_mature(methodOop method);
113 // Initialize: set compiler thread count
114 virtual void initialize();
115 };
116
117 #endif // SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_HPP
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