Mercurial > hg > graal-compiler
annotate src/share/vm/compiler/compileLog.cpp @ 7469:0c8717a92b2d
8001341: SIGSEGV in methodOopDesc::fast_exception_handler_bci_for(KlassHandle,int,Thread*)+0x3e9.
Summary: Use methodHandle.
Reviewed-by: coleenp, acorn, twisti, sspitsyn
author | jiangli |
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date | Tue, 08 Jan 2013 13:01:19 -0500 |
parents | c3e799c37717 |
children | cc32ccaaf47f |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "ci/ciMethod.hpp" | |
27 #include "compiler/compileLog.hpp" | |
28 #include "memory/allocation.inline.hpp" | |
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29 #include "oops/method.hpp" |
1972 | 30 #include "runtime/mutexLocker.hpp" |
31 #include "runtime/os.hpp" | |
0 | 32 |
33 CompileLog* CompileLog::_first = NULL; | |
34 | |
35 // ------------------------------------------------------------------ | |
36 // CompileLog::CompileLog | |
37 CompileLog::CompileLog(const char* file, FILE* fp, intx thread_id) | |
38 : _context(_context_buffer, sizeof(_context_buffer)) | |
39 { | |
6197 | 40 initialize(new(ResourceObj::C_HEAP, mtCompiler) fileStream(fp)); |
0 | 41 _file = file; |
42 _file_end = 0; | |
43 _thread_id = thread_id; | |
44 | |
45 _identities_limit = 0; | |
46 _identities_capacity = 400; | |
6197 | 47 _identities = NEW_C_HEAP_ARRAY(char, _identities_capacity, mtCompiler); |
0 | 48 |
49 // link into the global list | |
50 { MutexLocker locker(CompileTaskAlloc_lock); | |
51 _next = _first; | |
52 _first = this; | |
53 } | |
54 } | |
55 | |
56 CompileLog::~CompileLog() { | |
57 delete _out; | |
58 _out = NULL; | |
6197 | 59 FREE_C_HEAP_ARRAY(char, _identities, mtCompiler); |
0 | 60 } |
61 | |
62 | |
63 // Advance kind up to a null or space, return this tail. | |
64 // Make sure kind is null-terminated, not space-terminated. | |
65 // Use the buffer if necessary. | |
66 static const char* split_attrs(const char* &kind, char* buffer) { | |
67 const char* attrs = strchr(kind, ' '); | |
68 // Tease apart the first word from the rest: | |
69 if (attrs == NULL) { | |
70 return ""; // no attrs, no split | |
71 } else if (kind == buffer) { | |
72 ((char*) attrs)[-1] = 0; | |
73 return attrs; | |
74 } else { | |
75 // park it in the buffer, so we can put a null on the end | |
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76 assert(!(kind >= buffer && kind < buffer+100), "not obviously in buffer"); |
0 | 77 int klen = attrs - kind; |
78 strncpy(buffer, kind, klen); | |
79 buffer[klen] = 0; | |
80 kind = buffer; // return by reference | |
81 return attrs; | |
82 } | |
83 } | |
84 | |
85 // see_tag, pop_tag: Override the default do-nothing methods on xmlStream. | |
86 // These methods provide a hook for managing the the extra context markup. | |
87 void CompileLog::see_tag(const char* tag, bool push) { | |
88 if (_context.size() > 0 && _out != NULL) { | |
89 _out->write(_context.base(), _context.size()); | |
90 _context.reset(); | |
91 } | |
92 xmlStream::see_tag(tag, push); | |
93 } | |
94 void CompileLog::pop_tag(const char* tag) { | |
95 _context.reset(); // toss any context info. | |
96 xmlStream::pop_tag(tag); | |
97 } | |
98 | |
99 | |
100 // ------------------------------------------------------------------ | |
101 // CompileLog::identify | |
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102 int CompileLog::identify(ciBaseObject* obj) { |
0 | 103 if (obj == NULL) return 0; |
104 int id = obj->ident(); | |
105 if (id < 0) return id; | |
106 // If it has already been identified, just return the id. | |
107 if (id < _identities_limit && _identities[id] != 0) return id; | |
108 // Lengthen the array, if necessary. | |
109 if (id >= _identities_capacity) { | |
110 int new_cap = _identities_capacity * 2; | |
111 if (new_cap <= id) new_cap = id + 100; | |
6197 | 112 _identities = REALLOC_C_HEAP_ARRAY(char, _identities, new_cap, mtCompiler); |
0 | 113 _identities_capacity = new_cap; |
114 } | |
115 while (id >= _identities_limit) { | |
116 _identities[_identities_limit++] = 0; | |
117 } | |
118 assert(id < _identities_limit, "oob"); | |
119 // Mark this id as processed. | |
120 // (Be sure to do this before any recursive calls to identify.) | |
121 _identities[id] = 1; // mark | |
122 | |
123 // Now, print the object's identity once, in detail. | |
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124 if (obj->is_metadata()) { |
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125 ciMetadata* mobj = obj->as_metadata(); |
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126 if (mobj->is_klass()) { |
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127 ciKlass* klass = mobj->as_klass(); |
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128 begin_elem("klass id='%d'", id); |
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129 name(klass->name()); |
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130 if (!klass->is_loaded()) { |
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131 print(" unloaded='1'"); |
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132 } else { |
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133 print(" flags='%d'", klass->modifier_flags()); |
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134 } |
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135 end_elem(); |
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136 } else if (mobj->is_method()) { |
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137 ciMethod* method = mobj->as_method(); |
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138 ciSignature* sig = method->signature(); |
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139 // Pre-identify items that we will need! |
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140 identify(sig->return_type()); |
0 | 141 for (int i = 0; i < sig->count(); i++) { |
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142 identify(sig->type_at(i)); |
0 | 143 } |
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144 begin_elem("method id='%d' holder='%d'", |
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145 id, identify(method->holder())); |
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146 name(method->name()); |
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147 print(" return='%d'", identify(sig->return_type())); |
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148 if (sig->count() > 0) { |
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149 print(" arguments='"); |
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150 for (int i = 0; i < sig->count(); i++) { |
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151 print((i == 0) ? "%d" : " %d", identify(sig->type_at(i))); |
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152 } |
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153 print("'"); |
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154 } |
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155 if (!method->is_loaded()) { |
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156 print(" unloaded='1'"); |
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157 } else { |
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158 print(" flags='%d'", (jchar) method->flags().as_int()); |
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159 // output a few metrics |
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160 print(" bytes='%d'", method->code_size()); |
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161 method->log_nmethod_identity(this); |
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162 //print(" count='%d'", method->invocation_count()); |
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163 //int bec = method->backedge_count(); |
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164 //if (bec != 0) print(" backedge_count='%d'", bec); |
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165 print(" iicount='%d'", method->interpreter_invocation_count()); |
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166 } |
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167 end_elem(); |
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168 } else if (mobj->is_type()) { |
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169 BasicType type = mobj->as_type()->basic_type(); |
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170 elem("type id='%d' name='%s'", id, type2name(type)); |
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171 } else { |
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172 // Should not happen. |
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173 elem("unknown id='%d'", id); |
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174 ShouldNotReachHere(); |
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175 } |
0 | 176 } else if (obj->is_symbol()) { |
177 begin_elem("symbol id='%d'", id); | |
178 name(obj->as_symbol()); | |
179 end_elem(); | |
180 } else { | |
181 // Should not happen. | |
182 elem("unknown id='%d'", id); | |
183 } | |
184 return id; | |
185 } | |
186 | |
187 void CompileLog::name(ciSymbol* name) { | |
188 if (name == NULL) return; | |
189 print(" name='"); | |
190 name->print_symbol_on(text()); // handles quoting conventions | |
191 print("'"); | |
192 } | |
193 | |
194 | |
195 // ------------------------------------------------------------------ | |
196 // CompileLog::clear_identities | |
197 // Forget which identities have been printed. | |
198 void CompileLog::clear_identities() { | |
199 _identities_limit = 0; | |
200 } | |
201 | |
202 // ------------------------------------------------------------------ | |
203 // CompileLog::finish_log_on_error | |
204 // | |
205 // Note: This function is called after fatal error, avoid unnecessary memory | |
206 // or stack allocation, use only async-safe functions. It's possible JVM is | |
207 // only partially initialized. | |
208 void CompileLog::finish_log_on_error(outputStream* file, char* buf, int buflen) { | |
209 static bool called_exit = false; | |
210 if (called_exit) return; | |
211 called_exit = true; | |
212 | |
213 for (CompileLog* log = _first; log != NULL; log = log->_next) { | |
214 log->flush(); | |
215 const char* partial_file = log->file(); | |
216 int partial_fd = open(partial_file, O_RDONLY); | |
217 if (partial_fd != -1) { | |
218 // print/print_cr may need to allocate large stack buffer to format | |
219 // strings, here we use snprintf() and print_raw() instead. | |
220 file->print_raw("<compilation_log thread='"); | |
221 jio_snprintf(buf, buflen, UINTX_FORMAT, log->thread_id()); | |
222 file->print_raw(buf); | |
223 file->print_raw_cr("'>"); | |
224 | |
225 size_t nr; // number read into buf from partial log | |
226 // Copy data up to the end of the last <event> element: | |
227 julong to_read = log->_file_end; | |
228 while (to_read > 0) { | |
229 if (to_read < (julong)buflen) | |
230 nr = (size_t)to_read; | |
231 else nr = buflen; | |
232 nr = read(partial_fd, buf, (int)nr); | |
233 if (nr <= 0) break; | |
234 to_read -= (julong)nr; | |
235 file->write(buf, nr); | |
236 } | |
237 | |
238 // Copy any remaining data inside a quote: | |
239 bool saw_slop = false; | |
240 int end_cdata = 0; // state machine [0..2] watching for too many "]]" | |
241 while ((nr = read(partial_fd, buf, buflen)) > 0) { | |
242 if (!saw_slop) { | |
243 file->print_raw_cr("<fragment>"); | |
244 file->print_raw_cr("<![CDATA["); | |
245 saw_slop = true; | |
246 } | |
247 // The rest of this loop amounts to a simple copy operation: | |
248 // { file->write(buf, nr); } | |
249 // However, it must sometimes output the buffer in parts, | |
250 // in case there is a CDATA quote embedded in the fragment. | |
251 const char* bufp; // pointer into buf | |
252 size_t nw; // number written in each pass of the following loop: | |
253 for (bufp = buf; nr > 0; nr -= nw, bufp += nw) { | |
254 // Write up to any problematic CDATA delimiter (usually all of nr). | |
255 for (nw = 0; nw < nr; nw++) { | |
256 // First, scan ahead into the buf, checking the state machine. | |
257 switch (bufp[nw]) { | |
258 case ']': | |
259 if (end_cdata < 2) end_cdata += 1; // saturating counter | |
260 continue; // keep scanning | |
261 case '>': | |
262 if (end_cdata == 2) break; // found CDATA delimiter! | |
263 // else fall through: | |
264 default: | |
265 end_cdata = 0; | |
266 continue; // keep scanning | |
267 } | |
268 // If we get here, nw is pointing at a bad '>'. | |
269 // It is very rare for this to happen. | |
270 // However, this code has been tested by introducing | |
271 // CDATA sequences into the compilation log. | |
272 break; | |
273 } | |
274 // Now nw is the number of characters to write, usually == nr. | |
275 file->write(bufp, nw); | |
276 if (nw < nr) { | |
277 // We are about to go around the loop again. | |
278 // But first, disrupt the ]]> by closing and reopening the quote. | |
279 file->print_raw("]]><![CDATA["); | |
280 end_cdata = 0; // reset state machine | |
281 } | |
282 } | |
283 } | |
284 if (saw_slop) { | |
285 file->print_raw_cr("]]>"); | |
286 file->print_raw_cr("</fragment>"); | |
287 } | |
288 file->print_raw_cr("</compilation_log>"); | |
289 close(partial_fd); | |
290 unlink(partial_file); | |
291 } | |
292 } | |
293 } | |
294 | |
295 // ------------------------------------------------------------------ | |
296 // CompileLog::finish_log | |
297 // | |
298 // Called during normal shutdown. For now, any clean-up needed in normal | |
299 // shutdown is also needed in VM abort, so is covered by finish_log_on_error(). | |
300 // Just allocate a buffer and call finish_log_on_error(). | |
301 void CompileLog::finish_log(outputStream* file) { | |
302 char buf[4 * K]; | |
303 finish_log_on_error(file, buf, sizeof(buf)); | |
304 } | |
6843 | 305 |
306 // ------------------------------------------------------------------ | |
307 // CompileLog::inline_success | |
308 // | |
309 // Print about successful method inlining. | |
310 void CompileLog::inline_success(const char* reason) { | |
311 begin_elem("inline_success reason='"); | |
312 text(reason); | |
313 end_elem("'"); | |
314 } | |
315 | |
316 // ------------------------------------------------------------------ | |
317 // CompileLog::inline_fail | |
318 // | |
319 // Print about failed method inlining. | |
320 void CompileLog::inline_fail(const char* reason) { | |
321 begin_elem("inline_fail reason='"); | |
322 text(reason); | |
323 end_elem("'"); | |
324 } | |
325 | |
326 // ------------------------------------------------------------------ | |
327 // CompileLog::set_context | |
328 // | |
329 // Set XML tag as an optional marker - it is printed only if | |
330 // there are other entries after until it is reset. | |
331 void CompileLog::set_context(const char* format, ...) { | |
332 va_list ap; | |
333 va_start(ap, format); | |
334 clear_context(); | |
335 _context.print("<"); | |
336 _context.vprint(format, ap); | |
337 _context.print_cr("/>"); | |
338 va_end(ap); | |
339 } | |
340 | |
341 // ------------------------------------------------------------------ | |
342 // CompileLog::code_cache_state | |
343 // | |
344 // Print code cache state. | |
345 void CompileLog::code_cache_state() { | |
346 begin_elem("code_cache"); | |
347 CodeCache::log_state(this); | |
348 end_elem(""); | |
349 } |