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comparison src/share/vm/runtime/deoptimization.cpp @ 18712:37a5c6b8b930

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Log deopt before deoptimizing the frame
author Tom Rodriguez <tom.rodriguez@oracle.com>
date Wed, 17 Dec 2014 13:39:48 -0800
parents 3ad5d7a6adb5
children 1f95f91dd1d6
comparison
equal deleted inserted replaced
18711:88c280297bd2 18712:37a5c6b8b930
1226 void Deoptimization::deoptimize_single_frame(JavaThread* thread, frame fr, Deoptimization::DeoptReason reason) { 1226 void Deoptimization::deoptimize_single_frame(JavaThread* thread, frame fr, Deoptimization::DeoptReason reason) {
1227 assert(fr.can_be_deoptimized(), "checking frame type"); 1227 assert(fr.can_be_deoptimized(), "checking frame type");
1228 1228
1229 gather_statistics(reason, Action_none, Bytecodes::_illegal); 1229 gather_statistics(reason, Action_none, Bytecodes::_illegal);
1230 1230
1231 // Patch the nmethod so that when execution returns to it we will
1232 // deopt the execution state and return to the interpreter.
1233 fr.deoptimize(thread);
1234
1235 if (LogCompilation && xtty != NULL) { 1231 if (LogCompilation && xtty != NULL) {
1236 nmethod* nm = fr.cb()->as_nmethod_or_null(); 1232 nmethod* nm = fr.cb()->as_nmethod_or_null();
1237 assert(nm != NULL, "only nmethods can deopt"); 1233 assert(nm != NULL, "only nmethods can deopt");
1238 1234
1239 ttyLocker ttyl; 1235 ttyLocker ttyl;
1240 xtty->begin_head("deoptimized thread='" UINTX_FORMAT "' compile_id='%d'", 1236 xtty->begin_head("deoptimized thread='" UINTX_FORMAT "'", thread->osthread()->thread_id());
1241 thread->osthread()->thread_id(), nm != NULL ? nm->compile_id() : -1);
1242 nm->log_identity(xtty); 1237 nm->log_identity(xtty);
1243 xtty->end_head(); 1238 xtty->end_head();
1244 for (ScopeDesc* sd = nm->scope_desc_at(fr.pc()); ; sd = sd->sender()) { 1239 for (ScopeDesc* sd = nm->scope_desc_at(fr.pc()); ; sd = sd->sender()) {
1245 xtty->begin_elem("jvms bci='%d'", sd->bci()); 1240 xtty->begin_elem("jvms bci='%d'", sd->bci());
1246 xtty->method(sd->method()); 1241 xtty->method(sd->method());
1247 xtty->end_elem(); 1242 xtty->end_elem();
1248 if (sd->is_top()) break; 1243 if (sd->is_top()) break;
1249 } 1244 }
1250 xtty->tail("deoptimized"); 1245 xtty->tail("deoptimized");
1251 } 1246 }
1247
1248 // Patch the nmethod so that when execution returns to it we will
1249 // deopt the execution state and return to the interpreter.
1250 fr.deoptimize(thread);
1252 } 1251 }
1253 1252
1254 void Deoptimization::deoptimize(JavaThread* thread, frame fr, RegisterMap *map) { 1253 void Deoptimization::deoptimize(JavaThread* thread, frame fr, RegisterMap *map) {
1255 deoptimize(thread, fr, map, Reason_constraint); 1254 deoptimize(thread, fr, map, Reason_constraint);
1256 } 1255 }