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 // The CompilationPolicy selects which method (if any) should be compiled.
26 // It also decides which methods must always be compiled (i.e., are never
27 // interpreted).
28 class CompileTask;
29 class CompileQueue;
30
31 class CompilationPolicy : public CHeapObj {
32 static CompilationPolicy* _policy;
33 // Accumulated time
34 static elapsedTimer _accumulated_time;
35
36 static bool _in_vm_startup;
37 public:
38 static void set_in_vm_startup(bool in_vm_startup) { _in_vm_startup = in_vm_startup; }
39 static void completed_vm_startup();
40 static bool delay_compilation_during_startup() { return _in_vm_startup; }
41
42 // m must be compiled before executing it
43 static bool must_be_compiled(methodHandle m, int comp_level = CompLevel_all);
44 // m is allowed to be compiled
109 class StackWalkCompPolicy : public NonTieredCompPolicy {
110 public:
111 virtual void method_invocation_event(methodHandle m, TRAPS);
112 virtual void method_back_branch_event(methodHandle m, int bci, TRAPS);
113
114 private:
115 RFrame* findTopInlinableFrame(GrowableArray<RFrame*>* stack);
116 RFrame* senderOf(RFrame* rf, GrowableArray<RFrame*>* stack);
117
118 // the following variables hold values computed by the last inlining decision
119 // they are used for performance debugging only (print better messages)
120 static const char* _msg; // reason for not inlining
121
122 static const char* shouldInline (methodHandle callee, float frequency, int cnt);
123 // positive filter: should send be inlined? returns NULL (--> yes) or rejection msg
124 static const char* shouldNotInline(methodHandle callee);
125 // negative filter: should send NOT be inlined? returns NULL (--> inline) or rejection msg
126
127 };
128 #endif
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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_COMPILATIONPOLICY_HPP
26 #define SHARE_VM_RUNTIME_COMPILATIONPOLICY_HPP
27
28 #include "code/nmethod.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "memory/allocation.hpp"
31 #include "runtime/vm_operations.hpp"
32 #include "utilities/growableArray.hpp"
33
34 // The CompilationPolicy selects which method (if any) should be compiled.
35 // It also decides which methods must always be compiled (i.e., are never
36 // interpreted).
37 class CompileTask;
38 class CompileQueue;
39
40 class CompilationPolicy : public CHeapObj {
41 static CompilationPolicy* _policy;
42 // Accumulated time
43 static elapsedTimer _accumulated_time;
44
45 static bool _in_vm_startup;
46 public:
47 static void set_in_vm_startup(bool in_vm_startup) { _in_vm_startup = in_vm_startup; }
48 static void completed_vm_startup();
49 static bool delay_compilation_during_startup() { return _in_vm_startup; }
50
51 // m must be compiled before executing it
52 static bool must_be_compiled(methodHandle m, int comp_level = CompLevel_all);
53 // m is allowed to be compiled
118 class StackWalkCompPolicy : public NonTieredCompPolicy {
119 public:
120 virtual void method_invocation_event(methodHandle m, TRAPS);
121 virtual void method_back_branch_event(methodHandle m, int bci, TRAPS);
122
123 private:
124 RFrame* findTopInlinableFrame(GrowableArray<RFrame*>* stack);
125 RFrame* senderOf(RFrame* rf, GrowableArray<RFrame*>* stack);
126
127 // the following variables hold values computed by the last inlining decision
128 // they are used for performance debugging only (print better messages)
129 static const char* _msg; // reason for not inlining
130
131 static const char* shouldInline (methodHandle callee, float frequency, int cnt);
132 // positive filter: should send be inlined? returns NULL (--> yes) or rejection msg
133 static const char* shouldNotInline(methodHandle callee);
134 // negative filter: should send NOT be inlined? returns NULL (--> inline) or rejection msg
135
136 };
137 #endif
138
139 #endif // SHARE_VM_RUNTIME_COMPILATIONPOLICY_HPP
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