compileLog.cpp revision 1472:c18cbe5936b8
1/* 2 * Copyright (c) 2002, 2006, Oracle and/or its affiliates. All rights reserved. 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 * 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#include "incls/_precompiled.incl" 26#include "incls/_compileLog.cpp.incl" 27 28CompileLog* CompileLog::_first = NULL; 29 30// ------------------------------------------------------------------ 31// CompileLog::CompileLog 32CompileLog::CompileLog(const char* file, FILE* fp, intx thread_id) 33 : _context(_context_buffer, sizeof(_context_buffer)) 34{ 35 initialize(new(ResourceObj::C_HEAP) fileStream(fp)); 36 _file = file; 37 _file_end = 0; 38 _thread_id = thread_id; 39 40 _identities_limit = 0; 41 _identities_capacity = 400; 42 _identities = NEW_C_HEAP_ARRAY(char, _identities_capacity); 43 44 // link into the global list 45 { MutexLocker locker(CompileTaskAlloc_lock); 46 _next = _first; 47 _first = this; 48 } 49} 50 51CompileLog::~CompileLog() { 52 delete _out; 53 _out = NULL; 54 FREE_C_HEAP_ARRAY(char, _identities); 55} 56 57 58// Advance kind up to a null or space, return this tail. 59// Make sure kind is null-terminated, not space-terminated. 60// Use the buffer if necessary. 61static const char* split_attrs(const char* &kind, char* buffer) { 62 const char* attrs = strchr(kind, ' '); 63 // Tease apart the first word from the rest: 64 if (attrs == NULL) { 65 return ""; // no attrs, no split 66 } else if (kind == buffer) { 67 ((char*) attrs)[-1] = 0; 68 return attrs; 69 } else { 70 // park it in the buffer, so we can put a null on the end 71 assert(!(kind >= buffer && kind < buffer+100), "not obviously in buffer"); 72 int klen = attrs - kind; 73 strncpy(buffer, kind, klen); 74 buffer[klen] = 0; 75 kind = buffer; // return by reference 76 return attrs; 77 } 78} 79 80// see_tag, pop_tag: Override the default do-nothing methods on xmlStream. 81// These methods provide a hook for managing the the extra context markup. 82void CompileLog::see_tag(const char* tag, bool push) { 83 if (_context.size() > 0 && _out != NULL) { 84 _out->write(_context.base(), _context.size()); 85 _context.reset(); 86 } 87 xmlStream::see_tag(tag, push); 88} 89void CompileLog::pop_tag(const char* tag) { 90 _context.reset(); // toss any context info. 91 xmlStream::pop_tag(tag); 92} 93 94 95// ------------------------------------------------------------------ 96// CompileLog::identify 97int CompileLog::identify(ciObject* obj) { 98 if (obj == NULL) return 0; 99 int id = obj->ident(); 100 if (id < 0) return id; 101 // If it has already been identified, just return the id. 102 if (id < _identities_limit && _identities[id] != 0) return id; 103 // Lengthen the array, if necessary. 104 if (id >= _identities_capacity) { 105 int new_cap = _identities_capacity * 2; 106 if (new_cap <= id) new_cap = id + 100; 107 _identities = REALLOC_C_HEAP_ARRAY(char, _identities, new_cap); 108 _identities_capacity = new_cap; 109 } 110 while (id >= _identities_limit) { 111 _identities[_identities_limit++] = 0; 112 } 113 assert(id < _identities_limit, "oob"); 114 // Mark this id as processed. 115 // (Be sure to do this before any recursive calls to identify.) 116 _identities[id] = 1; // mark 117 118 // Now, print the object's identity once, in detail. 119 if (obj->is_klass()) { 120 ciKlass* klass = obj->as_klass(); 121 begin_elem("klass id='%d'", id); 122 name(klass->name()); 123 if (!klass->is_loaded()) { 124 print(" unloaded='1'"); 125 } else { 126 print(" flags='%d'", klass->modifier_flags()); 127 } 128 end_elem(); 129 } else if (obj->is_method()) { 130 ciMethod* method = obj->as_method(); 131 ciSignature* sig = method->signature(); 132 // Pre-identify items that we will need! 133 identify(sig->return_type()); 134 for (int i = 0; i < sig->count(); i++) { 135 identify(sig->type_at(i)); 136 } 137 begin_elem("method id='%d' holder='%d'", 138 id, identify(method->holder())); 139 name(method->name()); 140 print(" return='%d'", identify(sig->return_type())); 141 if (sig->count() > 0) { 142 print(" arguments='"); 143 for (int i = 0; i < sig->count(); i++) { 144 print((i == 0) ? "%d" : " %d", identify(sig->type_at(i))); 145 } 146 print("'"); 147 } 148 if (!method->is_loaded()) { 149 print(" unloaded='1'"); 150 } else { 151 print(" flags='%d'", (jchar) method->flags().as_int()); 152 // output a few metrics 153 print(" bytes='%d'", method->code_size()); 154 method->log_nmethod_identity(this); 155 //print(" count='%d'", method->invocation_count()); 156 //int bec = method->backedge_count(); 157 //if (bec != 0) print(" backedge_count='%d'", bec); 158 print(" iicount='%d'", method->interpreter_invocation_count()); 159 } 160 end_elem(); 161 } else if (obj->is_symbol()) { 162 begin_elem("symbol id='%d'", id); 163 name(obj->as_symbol()); 164 end_elem(); 165 } else if (obj->is_null_object()) { 166 elem("null_object id='%d'", id); 167 } else if (obj->is_type()) { 168 BasicType type = obj->as_type()->basic_type(); 169 elem("type id='%d' name='%s'", id, type2name(type)); 170 } else { 171 // Should not happen. 172 elem("unknown id='%d'", id); 173 } 174 return id; 175} 176 177void CompileLog::name(ciSymbol* name) { 178 if (name == NULL) return; 179 print(" name='"); 180 name->print_symbol_on(text()); // handles quoting conventions 181 print("'"); 182} 183 184 185// ------------------------------------------------------------------ 186// CompileLog::clear_identities 187// Forget which identities have been printed. 188void CompileLog::clear_identities() { 189 _identities_limit = 0; 190} 191 192// ------------------------------------------------------------------ 193// CompileLog::finish_log_on_error 194// 195// Note: This function is called after fatal error, avoid unnecessary memory 196// or stack allocation, use only async-safe functions. It's possible JVM is 197// only partially initialized. 198void CompileLog::finish_log_on_error(outputStream* file, char* buf, int buflen) { 199 static bool called_exit = false; 200 if (called_exit) return; 201 called_exit = true; 202 203 for (CompileLog* log = _first; log != NULL; log = log->_next) { 204 log->flush(); 205 const char* partial_file = log->file(); 206 int partial_fd = open(partial_file, O_RDONLY); 207 if (partial_fd != -1) { 208 // print/print_cr may need to allocate large stack buffer to format 209 // strings, here we use snprintf() and print_raw() instead. 210 file->print_raw("<compilation_log thread='"); 211 jio_snprintf(buf, buflen, UINTX_FORMAT, log->thread_id()); 212 file->print_raw(buf); 213 file->print_raw_cr("'>"); 214 215 size_t nr; // number read into buf from partial log 216 // Copy data up to the end of the last <event> element: 217 julong to_read = log->_file_end; 218 while (to_read > 0) { 219 if (to_read < (julong)buflen) 220 nr = (size_t)to_read; 221 else nr = buflen; 222 nr = read(partial_fd, buf, (int)nr); 223 if (nr <= 0) break; 224 to_read -= (julong)nr; 225 file->write(buf, nr); 226 } 227 228 // Copy any remaining data inside a quote: 229 bool saw_slop = false; 230 int end_cdata = 0; // state machine [0..2] watching for too many "]]" 231 while ((nr = read(partial_fd, buf, buflen)) > 0) { 232 if (!saw_slop) { 233 file->print_raw_cr("<fragment>"); 234 file->print_raw_cr("<![CDATA["); 235 saw_slop = true; 236 } 237 // The rest of this loop amounts to a simple copy operation: 238 // { file->write(buf, nr); } 239 // However, it must sometimes output the buffer in parts, 240 // in case there is a CDATA quote embedded in the fragment. 241 const char* bufp; // pointer into buf 242 size_t nw; // number written in each pass of the following loop: 243 for (bufp = buf; nr > 0; nr -= nw, bufp += nw) { 244 // Write up to any problematic CDATA delimiter (usually all of nr). 245 for (nw = 0; nw < nr; nw++) { 246 // First, scan ahead into the buf, checking the state machine. 247 switch (bufp[nw]) { 248 case ']': 249 if (end_cdata < 2) end_cdata += 1; // saturating counter 250 continue; // keep scanning 251 case '>': 252 if (end_cdata == 2) break; // found CDATA delimiter! 253 // else fall through: 254 default: 255 end_cdata = 0; 256 continue; // keep scanning 257 } 258 // If we get here, nw is pointing at a bad '>'. 259 // It is very rare for this to happen. 260 // However, this code has been tested by introducing 261 // CDATA sequences into the compilation log. 262 break; 263 } 264 // Now nw is the number of characters to write, usually == nr. 265 file->write(bufp, nw); 266 if (nw < nr) { 267 // We are about to go around the loop again. 268 // But first, disrupt the ]]> by closing and reopening the quote. 269 file->print_raw("]]><![CDATA["); 270 end_cdata = 0; // reset state machine 271 } 272 } 273 } 274 if (saw_slop) { 275 file->print_raw_cr("]]>"); 276 file->print_raw_cr("</fragment>"); 277 } 278 file->print_raw_cr("</compilation_log>"); 279 close(partial_fd); 280 unlink(partial_file); 281 } 282 } 283} 284 285// ------------------------------------------------------------------ 286// CompileLog::finish_log 287// 288// Called during normal shutdown. For now, any clean-up needed in normal 289// shutdown is also needed in VM abort, so is covered by finish_log_on_error(). 290// Just allocate a buffer and call finish_log_on_error(). 291void CompileLog::finish_log(outputStream* file) { 292 char buf[4 * K]; 293 finish_log_on_error(file, buf, sizeof(buf)); 294} 295