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
54 static bool can_be_compiled(methodHandle m, int comp_level = CompLevel_all);
55 static bool is_compilation_enabled();
56 static void set_policy(CompilationPolicy* policy) { _policy = policy; }
57 static CompilationPolicy* policy() { return _policy; }
58
59 // Profiling
60 elapsedTimer* accumulated_time() { return &_accumulated_time; }
61 void print_time() PRODUCT_RETURN;
62 virtual int compiler_count(CompLevel comp_level) = 0;
63 // main notification entry, return a pointer to an nmethod if the OSR is required,
64 // returns NULL otherwise.
65 virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, TRAPS) = 0;
66 // safepoint() is called at the end of the safepoint
67 virtual void do_safepoint_work() = 0;
68 // reprofile request
69 virtual void reprofile(ScopeDesc* trap_scope, bool is_osr) = 0;
70 // delay_compilation(method) can be called by any component of the runtime to notify the policy
71 // that it's recommended to delay the complation of this method.
72 virtual void delay_compilation(methodOop method) = 0;
73 // disable_compilation() is called whenever the runtime decides to disable compilation of the
74 // specified method.
75 virtual void disable_compilation(methodOop method) = 0;
76 // Select task is called by CompileBroker. The queue is guaranteed to have at least one
77 // element and is locked. The function should select one and return it.
78 virtual CompileTask* select_task(CompileQueue* compile_queue) = 0;
79 // Tell the runtime if we think a given method is adequately profiled.
80 virtual bool is_mature(methodOop method) = 0;
81 // Do policy initialization
82 virtual void initialize() = 0;
83 virtual bool should_not_inline(ciEnv* env, ciMethod* method) { return false; }
84 };
85
86 // A base class for baseline policies.
87 class NonTieredCompPolicy : public CompilationPolicy {
88 int _compiler_count;
89 protected:
90 static void trace_frequency_counter_overflow(methodHandle m, int branch_bci, int bci);
91 static void trace_osr_request(methodHandle method, nmethod* osr, int bci);
92 static void trace_osr_completion(nmethod* osr_nm);
93 void reset_counter_for_invocation_event(methodHandle method);
94 void reset_counter_for_back_branch_event(methodHandle method);
95 public:
96 NonTieredCompPolicy() : _compiler_count(0) { }
97 virtual int compiler_count(CompLevel comp_level);
98 virtual void do_safepoint_work();
99 virtual void reprofile(ScopeDesc* trap_scope, bool is_osr);
100 virtual void delay_compilation(methodOop method);
101 virtual void disable_compilation(methodOop method);
102 virtual bool is_mature(methodOop method);
103 virtual void initialize();
104 virtual CompileTask* select_task(CompileQueue* compile_queue);
105 virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, TRAPS);
106 virtual void method_invocation_event(methodHandle m, TRAPS) = 0;
107 virtual void method_back_branch_event(methodHandle m, int bci, TRAPS) = 0;
108 };
109
110 class SimpleCompPolicy : public NonTieredCompPolicy {
111 public:
112 virtual void method_invocation_event(methodHandle m, TRAPS);
113 virtual void method_back_branch_event(methodHandle m, int bci, TRAPS);
114 };
115
116 // StackWalkCompPolicy - existing C2 policy
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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
54 static bool can_be_compiled(methodHandle m, int comp_level = CompLevel_all);
55 static bool is_compilation_enabled();
56 static void set_policy(CompilationPolicy* policy) { _policy = policy; }
57 static CompilationPolicy* policy() { return _policy; }
58
59 // Profiling
60 elapsedTimer* accumulated_time() { return &_accumulated_time; }
61 void print_time() PRODUCT_RETURN;
62 // Return initial compile level that is used with Xcomp
63 virtual CompLevel initial_compile_level() = 0;
64 virtual int compiler_count(CompLevel comp_level) = 0;
65 // main notification entry, return a pointer to an nmethod if the OSR is required,
66 // returns NULL otherwise.
67 virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, TRAPS) = 0;
68 // safepoint() is called at the end of the safepoint
69 virtual void do_safepoint_work() = 0;
70 // reprofile request
71 virtual void reprofile(ScopeDesc* trap_scope, bool is_osr) = 0;
72 // delay_compilation(method) can be called by any component of the runtime to notify the policy
73 // that it's recommended to delay the complation of this method.
74 virtual void delay_compilation(methodOop method) = 0;
75 // disable_compilation() is called whenever the runtime decides to disable compilation of the
76 // specified method.
77 virtual void disable_compilation(methodOop method) = 0;
78 // Select task is called by CompileBroker. The queue is guaranteed to have at least one
79 // element and is locked. The function should select one and return it.
80 virtual CompileTask* select_task(CompileQueue* compile_queue) = 0;
81 // Tell the runtime if we think a given method is adequately profiled.
82 virtual bool is_mature(methodOop method) = 0;
83 // Do policy initialization
84 virtual void initialize() = 0;
85 virtual bool should_not_inline(ciEnv* env, ciMethod* method) { return false; }
86 };
87
88 // A base class for baseline policies.
89 class NonTieredCompPolicy : public CompilationPolicy {
90 int _compiler_count;
91 protected:
92 static void trace_frequency_counter_overflow(methodHandle m, int branch_bci, int bci);
93 static void trace_osr_request(methodHandle method, nmethod* osr, int bci);
94 static void trace_osr_completion(nmethod* osr_nm);
95 void reset_counter_for_invocation_event(methodHandle method);
96 void reset_counter_for_back_branch_event(methodHandle method);
97 public:
98 NonTieredCompPolicy() : _compiler_count(0) { }
99 virtual CompLevel initial_compile_level() { return CompLevel_initial_compile; }
100 virtual int compiler_count(CompLevel comp_level);
101 virtual void do_safepoint_work();
102 virtual void reprofile(ScopeDesc* trap_scope, bool is_osr);
103 virtual void delay_compilation(methodOop method);
104 virtual void disable_compilation(methodOop method);
105 virtual bool is_mature(methodOop method);
106 virtual void initialize();
107 virtual CompileTask* select_task(CompileQueue* compile_queue);
108 virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, TRAPS);
109 virtual void method_invocation_event(methodHandle m, TRAPS) = 0;
110 virtual void method_back_branch_event(methodHandle m, int bci, TRAPS) = 0;
111 };
112
113 class SimpleCompPolicy : public NonTieredCompPolicy {
114 public:
115 virtual void method_invocation_event(methodHandle m, TRAPS);
116 virtual void method_back_branch_event(methodHandle m, int bci, TRAPS);
117 };
118
119 // StackWalkCompPolicy - existing C2 policy
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