121 #ifdef COMPILER2
122 generate_uncommon_trap_blob();
123 #endif // COMPILER2
124 }
125
126 #include <math.h>
127
128 // Implementation of SharedRuntime
129
130 #ifndef PRODUCT
131 // For statistics
132 int SharedRuntime::_ic_miss_ctr = 0;
133 int SharedRuntime::_wrong_method_ctr = 0;
134 int SharedRuntime::_resolve_static_ctr = 0;
135 int SharedRuntime::_resolve_virtual_ctr = 0;
136 int SharedRuntime::_resolve_opt_virtual_ctr = 0;
137 int SharedRuntime::_implicit_null_throws = 0;
138 int SharedRuntime::_implicit_div0_throws = 0;
139 int SharedRuntime::_throw_null_ctr = 0;
140
141 int SharedRuntime::_nof_normal_calls = 0;
142 int SharedRuntime::_nof_optimized_calls = 0;
143 int SharedRuntime::_nof_inlined_calls = 0;
144 int SharedRuntime::_nof_megamorphic_calls = 0;
145 int SharedRuntime::_nof_static_calls = 0;
146 int SharedRuntime::_nof_inlined_static_calls = 0;
147 int SharedRuntime::_nof_interface_calls = 0;
148 int SharedRuntime::_nof_optimized_interface_calls = 0;
149 int SharedRuntime::_nof_inlined_interface_calls = 0;
150 int SharedRuntime::_nof_megamorphic_interface_calls = 0;
151 int SharedRuntime::_nof_removable_exceptions = 0;
152
153 int SharedRuntime::_new_instance_ctr=0;
154 int SharedRuntime::_new_array_ctr=0;
155 int SharedRuntime::_multi1_ctr=0;
156 int SharedRuntime::_multi2_ctr=0;
157 int SharedRuntime::_multi3_ctr=0;
158 int SharedRuntime::_multi4_ctr=0;
159 int SharedRuntime::_multi5_ctr=0;
160 int SharedRuntime::_mon_enter_stub_ctr=0;
161 int SharedRuntime::_mon_exit_stub_ctr=0;
162 int SharedRuntime::_mon_enter_ctr=0;
163 int SharedRuntime::_mon_exit_ctr=0;
164 int SharedRuntime::_partial_subtype_ctr=0;
165 int SharedRuntime::_jbyte_array_copy_ctr=0;
166 int SharedRuntime::_jshort_array_copy_ctr=0;
167 int SharedRuntime::_jint_array_copy_ctr=0;
168 int SharedRuntime::_jlong_array_copy_ctr=0;
169 int SharedRuntime::_oop_array_copy_ctr=0;
170 int SharedRuntime::_checkcast_array_copy_ctr=0;
2128 if (_jshort_array_copy_ctr) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr);
2129 if (_jint_array_copy_ctr) tty->print_cr("%5d int array copies", _jint_array_copy_ctr);
2130 if (_jlong_array_copy_ctr) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr);
2131 if (_oop_array_copy_ctr) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr);
2132 if (_checkcast_array_copy_ctr) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr);
2133 if (_unsafe_array_copy_ctr) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr);
2134 if (_generic_array_copy_ctr) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr);
2135 if (_slow_array_copy_ctr) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr);
2136 if (_find_handler_ctr) tty->print_cr("%5d find exception handler", _find_handler_ctr);
2137 if (_rethrow_ctr) tty->print_cr("%5d rethrow handler", _rethrow_ctr);
2138
2139 AdapterHandlerLibrary::print_statistics();
2140
2141 if (xtty != NULL) xtty->tail("statistics");
2142 }
2143
2144 inline double percent(int x, int y) {
2145 return 100.0 * x / MAX2(y, 1);
2146 }
2147
2148 class MethodArityHistogram {
2149 public:
2150 enum { MAX_ARITY = 256 };
2151 private:
2152 static int _arity_histogram[MAX_ARITY]; // histogram of #args
2153 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words
2154 static int _max_arity; // max. arity seen
2155 static int _max_size; // max. arg size seen
2156
2157 static void add_method_to_histogram(nmethod* nm) {
2158 if (CompiledMethod::nmethod_access_is_safe(nm)) {
2159 Method* method = nm->method();
2160 ArgumentCount args(method->signature());
2161 int arity = args.size() + (method->is_static() ? 0 : 1);
2162 int argsize = method->size_of_parameters();
2163 arity = MIN2(arity, MAX_ARITY-1);
2164 argsize = MIN2(argsize, MAX_ARITY-1);
2165 int count = method->compiled_invocation_count();
2166 _arity_histogram[arity] += count;
2167 _size_histogram[argsize] += count;
2168 _max_arity = MAX2(_max_arity, arity);
2169 _max_size = MAX2(_max_size, argsize);
2170 }
2171 }
2172
2173 void print_histogram_helper(int n, int* histo, const char* name) {
2174 const int N = MIN2(5, n);
2175 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):");
2176 double sum = 0;
2177 double weighted_sum = 0;
2178 int i;
2179 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; }
2180 double rest = sum;
2181 double percent = sum / 100;
2182 for (i = 0; i <= N; i++) {
2183 rest -= histo[i];
2184 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent);
2185 }
2186 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent);
2187 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n);
2188 }
2189
2190 void print_histogram() {
2191 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):");
2192 print_histogram_helper(_max_arity, _arity_histogram, "arity");
2193 tty->print_cr("\nSame for parameter size (in words):");
2194 print_histogram_helper(_max_size, _size_histogram, "size");
2195 tty->cr();
2196 }
2197
2198 public:
2199 MethodArityHistogram() {
2200 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
2201 _max_arity = _max_size = 0;
2202 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram[i] = 0;
2203 CodeCache::nmethods_do(add_method_to_histogram);
2204 print_histogram();
2205 }
2206 };
2207
2208 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY];
2209 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY];
2210 int MethodArityHistogram::_max_arity;
2211 int MethodArityHistogram::_max_size;
2212
2213 void SharedRuntime::print_call_statistics(int comp_total) {
2214 tty->print_cr("Calls from compiled code:");
2215 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls;
2216 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls;
2217 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls;
2218 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total));
2219 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total));
2220 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls));
2221 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls));
2222 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls));
2223 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls));
2224 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total));
2225 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls));
2226 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls));
2227 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls));
2228 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls));
2229 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total));
2230 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls));
2231 tty->cr();
2232 tty->print_cr("Note 1: counter updates are not MT-safe.");
2233 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;");
2234 tty->print_cr(" %% in nested categories are relative to their category");
2235 tty->print_cr(" (and thus add up to more than 100%% with inlining)");
2236 tty->cr();
2237
2238 MethodArityHistogram h;
2239 }
2240 #endif
2241
2242
2243 // A simple wrapper class around the calling convention information
2244 // that allows sharing of adapters for the same calling convention.
2245 class AdapterFingerPrint : public CHeapObj<mtCode> {
2246 private:
2247 enum {
2248 _basic_type_bits = 4,
2249 _basic_type_mask = right_n_bits(_basic_type_bits),
2250 _basic_types_per_int = BitsPerInt / _basic_type_bits,
|
121 #ifdef COMPILER2
122 generate_uncommon_trap_blob();
123 #endif // COMPILER2
124 }
125
126 #include <math.h>
127
128 // Implementation of SharedRuntime
129
130 #ifndef PRODUCT
131 // For statistics
132 int SharedRuntime::_ic_miss_ctr = 0;
133 int SharedRuntime::_wrong_method_ctr = 0;
134 int SharedRuntime::_resolve_static_ctr = 0;
135 int SharedRuntime::_resolve_virtual_ctr = 0;
136 int SharedRuntime::_resolve_opt_virtual_ctr = 0;
137 int SharedRuntime::_implicit_null_throws = 0;
138 int SharedRuntime::_implicit_div0_throws = 0;
139 int SharedRuntime::_throw_null_ctr = 0;
140
141 int64_t SharedRuntime::_nof_normal_calls = 0;
142 int64_t SharedRuntime::_nof_optimized_calls = 0;
143 int64_t SharedRuntime::_nof_inlined_calls = 0;
144 int64_t SharedRuntime::_nof_megamorphic_calls = 0;
145 int64_t SharedRuntime::_nof_static_calls = 0;
146 int64_t SharedRuntime::_nof_inlined_static_calls = 0;
147 int64_t SharedRuntime::_nof_interface_calls = 0;
148 int64_t SharedRuntime::_nof_optimized_interface_calls = 0;
149 int64_t SharedRuntime::_nof_inlined_interface_calls = 0;
150 int64_t SharedRuntime::_nof_megamorphic_interface_calls = 0;
151 int SharedRuntime::_nof_removable_exceptions = 0;
152
153 int SharedRuntime::_new_instance_ctr=0;
154 int SharedRuntime::_new_array_ctr=0;
155 int SharedRuntime::_multi1_ctr=0;
156 int SharedRuntime::_multi2_ctr=0;
157 int SharedRuntime::_multi3_ctr=0;
158 int SharedRuntime::_multi4_ctr=0;
159 int SharedRuntime::_multi5_ctr=0;
160 int SharedRuntime::_mon_enter_stub_ctr=0;
161 int SharedRuntime::_mon_exit_stub_ctr=0;
162 int SharedRuntime::_mon_enter_ctr=0;
163 int SharedRuntime::_mon_exit_ctr=0;
164 int SharedRuntime::_partial_subtype_ctr=0;
165 int SharedRuntime::_jbyte_array_copy_ctr=0;
166 int SharedRuntime::_jshort_array_copy_ctr=0;
167 int SharedRuntime::_jint_array_copy_ctr=0;
168 int SharedRuntime::_jlong_array_copy_ctr=0;
169 int SharedRuntime::_oop_array_copy_ctr=0;
170 int SharedRuntime::_checkcast_array_copy_ctr=0;
2128 if (_jshort_array_copy_ctr) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr);
2129 if (_jint_array_copy_ctr) tty->print_cr("%5d int array copies", _jint_array_copy_ctr);
2130 if (_jlong_array_copy_ctr) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr);
2131 if (_oop_array_copy_ctr) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr);
2132 if (_checkcast_array_copy_ctr) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr);
2133 if (_unsafe_array_copy_ctr) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr);
2134 if (_generic_array_copy_ctr) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr);
2135 if (_slow_array_copy_ctr) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr);
2136 if (_find_handler_ctr) tty->print_cr("%5d find exception handler", _find_handler_ctr);
2137 if (_rethrow_ctr) tty->print_cr("%5d rethrow handler", _rethrow_ctr);
2138
2139 AdapterHandlerLibrary::print_statistics();
2140
2141 if (xtty != NULL) xtty->tail("statistics");
2142 }
2143
2144 inline double percent(int x, int y) {
2145 return 100.0 * x / MAX2(y, 1);
2146 }
2147
2148 inline double percent(int64_t x, int64_t y) {
2149 return 100.0 * x / MAX2(y, (int64_t)1);
2150 }
2151
2152 class MethodArityHistogram {
2153 public:
2154 enum { MAX_ARITY = 256 };
2155 private:
2156 static uint64_t _arity_histogram[MAX_ARITY]; // histogram of #args
2157 static uint64_t _size_histogram[MAX_ARITY]; // histogram of arg size in words
2158 static uint64_t _total_compiled_calls;
2159 static uint64_t _max_compiled_calls_per_method;
2160 static int _max_arity; // max. arity seen
2161 static int _max_size; // max. arg size seen
2162
2163 static void add_method_to_histogram(nmethod* nm) {
2164 if (CompiledMethod::nmethod_access_is_safe(nm)) {
2165 Method* method = nm->method();
2166 ArgumentCount args(method->signature());
2167 int arity = args.size() + (method->is_static() ? 0 : 1);
2168 int argsize = method->size_of_parameters();
2169 arity = MIN2(arity, MAX_ARITY-1);
2170 argsize = MIN2(argsize, MAX_ARITY-1);
2171 uint64_t count = (uint64_t)method->compiled_invocation_count();
2172 _max_compiled_calls_per_method = count > _max_compiled_calls_per_method ? count : _max_compiled_calls_per_method;
2173 _total_compiled_calls += count;
2174 _arity_histogram[arity] += count;
2175 _size_histogram[argsize] += count;
2176 _max_arity = MAX2(_max_arity, arity);
2177 _max_size = MAX2(_max_size, argsize);
2178 }
2179 }
2180
2181 void print_histogram_helper(int n, uint64_t* histo, const char* name) {
2182 const int N = MIN2(9, n);
2183 double sum = 0;
2184 double weighted_sum = 0;
2185 for (int i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; }
2186 if (sum >= 1.0) { // prevent divide by zero or divide overflow
2187 double rest = sum;
2188 double percent = sum / 100;
2189 for (int i = 0; i <= N; i++) {
2190 rest -= histo[i];
2191 tty->print_cr("%4d: " UINT64_FORMAT_W(12) " (%5.1f%%)", i, histo[i], histo[i] / percent);
2192 }
2193 tty->print_cr("rest: " INT64_FORMAT_W(12) " (%5.1f%%)", (int64_t)rest, rest / percent);
2194 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n);
2195 tty->print_cr("(total # of compiled calls = " INT64_FORMAT_W(14) ")", _total_compiled_calls);
2196 tty->print_cr("(max # of compiled calls = " INT64_FORMAT_W(14) ")", _max_compiled_calls_per_method);
2197 } else {
2198 tty->print_cr("Histogram generation failed for %s. n = %d, sum = %7.5f", name, n, sum);
2199 }
2200 }
2201
2202 void print_histogram() {
2203 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):");
2204 print_histogram_helper(_max_arity, _arity_histogram, "arity");
2205 tty->print_cr("\nHistogram of parameter block size (in words, incl. rcvr):");
2206 print_histogram_helper(_max_size, _size_histogram, "size");
2207 tty->cr();
2208 }
2209
2210 public:
2211 MethodArityHistogram() {
2212 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
2213 _max_arity = _max_size = 0;
2214 _total_compiled_calls = 0;
2215 _max_compiled_calls_per_method = 0;
2216 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram[i] = 0;
2217 CodeCache::nmethods_do(add_method_to_histogram);
2218 print_histogram();
2219 }
2220 };
2221
2222 uint64_t MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY];
2223 uint64_t MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY];
2224 uint64_t MethodArityHistogram::_total_compiled_calls;
2225 uint64_t MethodArityHistogram::_max_compiled_calls_per_method;
2226 int MethodArityHistogram::_max_arity;
2227 int MethodArityHistogram::_max_size;
2228
2229 void SharedRuntime::print_call_statistics(uint64_t comp_total) {
2230 tty->print_cr("Calls from compiled code:");
2231 int64_t total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls;
2232 int64_t mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls;
2233 int64_t mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls;
2234 tty->print_cr("\t" INT64_FORMAT_W(12) " (100%%) total non-inlined ", total);
2235 tty->print_cr("\t" INT64_FORMAT_W(12) " (%4.1f%%) |- virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total));
2236 tty->print_cr("\t" INT64_FORMAT_W(12) " (%4.0f%%) | |- inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls));
2237 tty->print_cr("\t" INT64_FORMAT_W(12) " (%4.0f%%) | |- optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls));
2238 tty->print_cr("\t" INT64_FORMAT_W(12) " (%4.0f%%) | |- monomorphic ", mono_c, percent(mono_c, _nof_normal_calls));
2239 tty->print_cr("\t" INT64_FORMAT_W(12) " (%4.0f%%) | |- megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls));
2240 tty->print_cr("\t" INT64_FORMAT_W(12) " (%4.1f%%) |- interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total));
2241 tty->print_cr("\t" INT64_FORMAT_W(12) " (%4.0f%%) | |- inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls));
2242 tty->print_cr("\t" INT64_FORMAT_W(12) " (%4.0f%%) | |- optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls));
2243 tty->print_cr("\t" INT64_FORMAT_W(12) " (%4.0f%%) | |- monomorphic ", mono_i, percent(mono_i, _nof_interface_calls));
2244 tty->print_cr("\t" INT64_FORMAT_W(12) " (%4.0f%%) | |- megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls));
2245 tty->print_cr("\t" INT64_FORMAT_W(12) " (%4.1f%%) |- static/special calls", _nof_static_calls, percent(_nof_static_calls, total));
2246 tty->print_cr("\t" INT64_FORMAT_W(12) " (%4.0f%%) | |- inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls));
2247 tty->cr();
2248 tty->print_cr("Note 1: counter updates are not MT-safe.");
2249 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;");
2250 tty->print_cr(" %% in nested categories are relative to their category");
2251 tty->print_cr(" (and thus add up to more than 100%% with inlining)");
2252 tty->cr();
2253
2254 MethodArityHistogram h;
2255 }
2256 #endif
2257
2258
2259 // A simple wrapper class around the calling convention information
2260 // that allows sharing of adapters for the same calling convention.
2261 class AdapterFingerPrint : public CHeapObj<mtCode> {
2262 private:
2263 enum {
2264 _basic_type_bits = 4,
2265 _basic_type_mask = right_n_bits(_basic_type_bits),
2266 _basic_types_per_int = BitsPerInt / _basic_type_bits,
|