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/methodData.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 Method* and MDO).
42 inline void handle_counter_overflow(Method* 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, Method* method);
47 bool call_predicate(int i, int b, CompLevel cur_level, Method* method);
48 bool loop_predicate(int i, int b, CompLevel cur_level, Method* method);
49 // Common transition function. Given a predicate determines if a method should transition to another level.
50 CompLevel common(Predicate p, Method* method, CompLevel cur_level);
51 // Transition functions.
52 // call_event determines if a method should be compiled at a different
101 virtual CompLevel initial_compile_level() { return MIN2((CompLevel)TieredStopAtLevel, CompLevel_initial_compile); }
102 virtual void do_safepoint_work() { }
103 virtual void delay_compilation(Method* method) { }
104 virtual void disable_compilation(Method* method) { }
105 virtual void reprofile(ScopeDesc* trap_scope, bool is_osr);
106 virtual nmethod* event(const methodHandle& method, const methodHandle& inlinee,
107 int branch_bci, int bci, CompLevel comp_level, CompiledMethod* nm, JavaThread* thread);
108 // Select task is called by CompileBroker. We should return a task or NULL.
109 virtual CompileTask* select_task(CompileQueue* compile_queue);
110 // Tell the runtime if we think a given method is adequately profiled.
111 virtual bool is_mature(Method* method);
112 // Initialize: set compiler thread count
113 virtual void initialize();
114 virtual bool should_not_inline(ciEnv* env, ciMethod* callee) {
115 return (env->comp_level() == CompLevel_limited_profile ||
116 env->comp_level() == CompLevel_full_profile) &&
117 callee->has_loops();
118 }
119 };
120
121 #endif // SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_HPP
|
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/methodData.hpp"
30 #include "runtime/compilationPolicy.hpp"
31 #include "utilities/globalDefinitions.hpp"
32
33 #ifdef TIERED
34
35 class CompileTask;
36 class CompileQueue;
37
38 class SimpleThresholdPolicy : public CompilationPolicy {
39 int _c1_count, _c2_count;
40
41 // Check if the counter is big enough and set carry (effectively infinity).
42 inline void set_carry_if_necessary(InvocationCounter *counter);
43 // Set carry flags in the counters (in Method* and MDO).
44 inline void handle_counter_overflow(Method* method);
45 // Call and loop predicates determine whether a transition to a higher compilation
46 // level should be performed (pointers to predicate functions are passed to common_TF().
47 // Predicates also take compiler load into account.
48 typedef bool (SimpleThresholdPolicy::*Predicate)(int i, int b, CompLevel cur_level, Method* method);
49 bool call_predicate(int i, int b, CompLevel cur_level, Method* method);
50 bool loop_predicate(int i, int b, CompLevel cur_level, Method* method);
51 // Common transition function. Given a predicate determines if a method should transition to another level.
52 CompLevel common(Predicate p, Method* method, CompLevel cur_level);
53 // Transition functions.
54 // call_event determines if a method should be compiled at a different
103 virtual CompLevel initial_compile_level() { return MIN2((CompLevel)TieredStopAtLevel, CompLevel_initial_compile); }
104 virtual void do_safepoint_work() { }
105 virtual void delay_compilation(Method* method) { }
106 virtual void disable_compilation(Method* method) { }
107 virtual void reprofile(ScopeDesc* trap_scope, bool is_osr);
108 virtual nmethod* event(const methodHandle& method, const methodHandle& inlinee,
109 int branch_bci, int bci, CompLevel comp_level, CompiledMethod* nm, JavaThread* thread);
110 // Select task is called by CompileBroker. We should return a task or NULL.
111 virtual CompileTask* select_task(CompileQueue* compile_queue);
112 // Tell the runtime if we think a given method is adequately profiled.
113 virtual bool is_mature(Method* method);
114 // Initialize: set compiler thread count
115 virtual void initialize();
116 virtual bool should_not_inline(ciEnv* env, ciMethod* callee) {
117 return (env->comp_level() == CompLevel_limited_profile ||
118 env->comp_level() == CompLevel_full_profile) &&
119 callee->has_loops();
120 }
121 };
122
123 #endif // TIERED
124
125 #endif // SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_HPP
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