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6830717: replay of compilations would help with debugging

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When java process crashed in compiler thread, repeat the compilation process will help finding root cause. This is done with using SA dump application class data and replay data from core dump, then use debug version of jvm to recompile the problematic java method.

Reviewed-by: kvn, twisti, sspitsyn
This commit is contained in:
Yumin Qi 2012-11-12 14:03:53 -08:00 • committed by Yumin Qi
parent 8735609a8c
commit f712e12f98
54 changed files with 2160 additions and 78 deletions
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13
hotspot/src/share/vm/opto/bytecodeInfo.cpp
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@ -23,6 +23,7 @@
*/
#include "precompiled.hpp"
#include "ci/ciReplay.hpp"
#include "classfile/systemDictionary.hpp"
#include "classfile/vmSymbols.hpp"
#include "compiler/compileBroker.hpp"
@ -150,7 +151,7 @@ const char* InlineTree::should_inline(ciMethod* callee_method, ciMethod* caller_
} else {
// Not hot. Check for medium-sized pre-existing nmethod at cold sites.
if (callee_method->has_compiled_code() &&
callee_method->instructions_size(CompLevel_full_optimization) > inline_small_code_size)
callee_method->instructions_size() > inline_small_code_size)
return "already compiled into a medium method";
}
if (size > max_inline_size) {
@ -192,7 +193,7 @@ const char* InlineTree::should_not_inline(ciMethod *callee_method, ciMethod* cal
}
if (callee_method->has_compiled_code() &&
callee_method->instructions_size(CompLevel_full_optimization) > InlineSmallCode) {
callee_method->instructions_size() > InlineSmallCode) {
wci_result->set_profit(wci_result->profit() * 0.1);
// %%% adjust wci_result->size()?
}
@ -216,7 +217,7 @@ const char* InlineTree::should_not_inline(ciMethod *callee_method, ciMethod* cal
// Now perform checks which are heuristic
if (callee_method->has_compiled_code() &&
callee_method->instructions_size(CompLevel_full_optimization) > InlineSmallCode) {
callee_method->instructions_size() > InlineSmallCode) {
return "already compiled into a big method";
}
@ -235,6 +236,12 @@ const char* InlineTree::should_not_inline(ciMethod *callee_method, ciMethod* cal
return "disallowed by CompilerOracle";
}
#ifndef PRODUCT
if (ciReplay::should_not_inline(callee_method)) {
return "disallowed by ciReplay";
}
#endif
if (UseStringCache) {
// Do not inline StringCache::profile() method used only at the beginning.
if (callee_method->name() == ciSymbol::profile_name() &&