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_OOPS_METHODCOUNTERS_HPP
26 #define SHARE_OOPS_METHODCOUNTERS_HPP
27
28 #include "oops/metadata.hpp"
29 #include "compiler/compilerDefinitions.hpp"
30 #include "interpreter/invocationCounter.hpp"
31 #include "utilities/align.hpp"
32
33 class MethodCounters : public Metadata {
34 friend class VMStructs;
35 friend class JVMCIVMStructs;
36 private:
37 InvocationCounter _invocation_counter; // Incremented before each activation of the method - used to trigger frequency-based optimizations
38 InvocationCounter _backedge_counter; // Incremented before each backedge taken - used to trigger frequency-based optimizations
39 jlong _prev_time; // Previous time the rate was acquired
40 float _rate; // Events (invocation and backedge counter increments) per millisecond
41 int _invoke_mask; // per-method Tier0InvokeNotifyFreqLog
42 int _backedge_mask; // per-method Tier0BackedgeNotifyFreqLog
43 int _prev_event_count; // Total number of events saved at previous callback
44 #if COMPILER2_OR_JVMCI
45 u2 _interpreter_throwout_count; // Count of times method was exited via exception while interpreting
46 #endif
47 #if INCLUDE_JVMTI
48 u2 _number_of_breakpoints; // fullspeed debugging support
49 #endif
50 u1 _highest_comp_level; // Highest compile level this method has ever seen.
51 u1 _highest_osr_comp_level; // Same for OSR level
52
53 MethodCounters(const methodHandle& mh);
54 public:
55 virtual bool is_methodCounters() const { return true; }
56
57 static MethodCounters* allocate_no_exception(const methodHandle& mh);
58 static MethodCounters* allocate_with_exception(const methodHandle& mh, TRAPS);
59
60 void deallocate_contents(ClassLoaderData* loader_data) {}
61
62 static int method_counters_size() {
63 return align_up((int)sizeof(MethodCounters), wordSize) / wordSize;
64 }
65 virtual int size() const {
66 return method_counters_size();
67 }
68 MetaspaceObj::Type type() const { return MethodCountersType; }
69 void clear_counters();
70
71 #if COMPILER2_OR_JVMCI
72 void interpreter_throwout_increment() {
73 if (_interpreter_throwout_count < 65534) {
74 _interpreter_throwout_count++;
75 }
76 }
77 u2 interpreter_throwout_count() const {
78 return _interpreter_throwout_count;
79 }
80 void set_interpreter_throwout_count(u2 count) {
81 _interpreter_throwout_count = count;
82 }
83 #else // COMPILER2_OR_JVMCI
84 u2 interpreter_throwout_count() const {
85 return 0;
86 }
87 void set_interpreter_throwout_count(u2 count) {
88 assert(count == 0, "count must be 0");
112 InvocationCounter* invocation_counter() { return &_invocation_counter; }
113 InvocationCounter* backedge_counter() { return &_backedge_counter; }
114
115 static ByteSize invocation_counter_offset() {
116 return byte_offset_of(MethodCounters, _invocation_counter);
117 }
118
119 static ByteSize backedge_counter_offset() {
120 return byte_offset_of(MethodCounters, _backedge_counter);
121 }
122
123 static ByteSize invoke_mask_offset() {
124 return byte_offset_of(MethodCounters, _invoke_mask);
125 }
126
127 static ByteSize backedge_mask_offset() {
128 return byte_offset_of(MethodCounters, _backedge_mask);
129 }
130
131 virtual const char* internal_name() const { return "{method counters}"; }
132 virtual void print_value_on(outputStream* st) const;
133
134 };
135 #endif // SHARE_OOPS_METHODCOUNTERS_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_OOPS_METHODCOUNTERS_HPP
26 #define SHARE_OOPS_METHODCOUNTERS_HPP
27
28 #include "oops/metadata.hpp"
29 #include "compiler/compilerDefinitions.hpp"
30 #include "interpreter/invocationCounter.hpp"
31 #include "utilities/align.hpp"
32
33 class MethodTrainingData;
34
35 class MethodCounters : public Metadata {
36 friend class VMStructs;
37 friend class JVMCIVMStructs;
38
39 // Used by CDS. These classes need to access the private default constructor.
40 template <class T> friend class CppVtableTesterA;
41 template <class T> friend class CppVtableTesterB;
42 template <class T> friend class CppVtableCloner;
43
44 private:
45 InvocationCounter _invocation_counter; // Incremented before each activation of the method - used to trigger frequency-based optimizations
46 InvocationCounter _backedge_counter; // Incremented before each backedge taken - used to trigger frequency-based optimizations
47
48 // Back pointer to the Method*
49 Method* _method;
50
51 MethodTrainingData* _method_training_data;
52 jlong _prev_time; // Previous time the rate was acquired
53 float _rate; // Events (invocation and backedge counter increments) per millisecond
54 int _invoke_mask; // per-method Tier0InvokeNotifyFreqLog
55 int _backedge_mask; // per-method Tier0BackedgeNotifyFreqLog
56 int _prev_event_count; // Total number of events saved at previous callback
57 #if COMPILER2_OR_JVMCI
58 u2 _interpreter_throwout_count; // Count of times method was exited via exception while interpreting
59 #endif
60 #if INCLUDE_JVMTI
61 u2 _number_of_breakpoints; // fullspeed debugging support
62 #endif
63 u1 _highest_comp_level; // Highest compile level this method has ever seen.
64 u1 _highest_osr_comp_level; // Same for OSR level
65
66 MethodCounters(const methodHandle& mh);
67 MethodCounters();
68
69 public:
70 virtual bool is_methodCounters() const { return true; }
71
72 Method* method() const { return _method; }
73
74 static MethodCounters* allocate_no_exception(const methodHandle& mh);
75 static MethodCounters* allocate_with_exception(const methodHandle& mh, TRAPS);
76
77 void deallocate_contents(ClassLoaderData* loader_data) {}
78
79 static int method_counters_size() {
80 return align_up((int)sizeof(MethodCounters), wordSize) / wordSize;
81 }
82 virtual int size() const {
83 return method_counters_size();
84 }
85 MetaspaceObj::Type type() const { return MethodCountersType; }
86 virtual void metaspace_pointers_do(MetaspaceClosure* iter);
87
88 void clear_counters();
89
90 #if COMPILER2_OR_JVMCI
91 void interpreter_throwout_increment() {
92 if (_interpreter_throwout_count < 65534) {
93 _interpreter_throwout_count++;
94 }
95 }
96 u2 interpreter_throwout_count() const {
97 return _interpreter_throwout_count;
98 }
99 void set_interpreter_throwout_count(u2 count) {
100 _interpreter_throwout_count = count;
101 }
102 #else // COMPILER2_OR_JVMCI
103 u2 interpreter_throwout_count() const {
104 return 0;
105 }
106 void set_interpreter_throwout_count(u2 count) {
107 assert(count == 0, "count must be 0");
131 InvocationCounter* invocation_counter() { return &_invocation_counter; }
132 InvocationCounter* backedge_counter() { return &_backedge_counter; }
133
134 static ByteSize invocation_counter_offset() {
135 return byte_offset_of(MethodCounters, _invocation_counter);
136 }
137
138 static ByteSize backedge_counter_offset() {
139 return byte_offset_of(MethodCounters, _backedge_counter);
140 }
141
142 static ByteSize invoke_mask_offset() {
143 return byte_offset_of(MethodCounters, _invoke_mask);
144 }
145
146 static ByteSize backedge_mask_offset() {
147 return byte_offset_of(MethodCounters, _backedge_mask);
148 }
149
150 virtual const char* internal_name() const { return "{method counters}"; }
151
152 MethodTrainingData* method_training_data() const { return _method_training_data; }
153 bool init_method_training_data(MethodTrainingData* tdata) {
154 return (_method_training_data == tdata ||
155 Atomic::replace_if_null(&_method_training_data, tdata));
156 }
157
158 #if INCLUDE_CDS
159 void remove_unshareable_info();
160 void restore_unshareable_info(TRAPS);
161 #endif
162
163 // Printing
164 void print_on (outputStream* st) const;
165 void print_value_on(outputStream* st) const;
166 void print_data_on(outputStream* st) const;
167 };
168 #endif // SHARE_OOPS_METHODCOUNTERS_HPP
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