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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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79
hotspot/src/share/vm/ci/ciMethodData.cpp
View file

@ -25,6 +25,7 @@
#include "precompiled.hpp"
#include "ci/ciMetadata.hpp"
#include "ci/ciMethodData.hpp"
#include "ci/ciReplay.hpp"
#include "ci/ciUtilities.hpp"
#include "memory/allocation.inline.hpp"
#include "memory/resourceArea.hpp"
@ -115,6 +116,11 @@ void ciMethodData::load_data() {
_arg_local = mdo->arg_local();
_arg_stack = mdo->arg_stack();
_arg_returned = mdo->arg_returned();
#ifndef PRODUCT
if (ReplayCompiles) {
ciReplay::initialize(this);
}
#endif
}
void ciReceiverTypeData::translate_receiver_data_from(ProfileData* data) {
@ -366,6 +372,79 @@ void ciMethodData::print_impl(outputStream* st) {
ciMetadata::print_impl(st);
}
void ciMethodData::dump_replay_data(outputStream* out) {
ASSERT_IN_VM;
MethodData* mdo = get_MethodData();
Method* method = mdo->method();
Klass* holder = method->method_holder();
out->print("ciMethodData %s %s %s %d %d",
holder->name()->as_quoted_ascii(),
method->name()->as_quoted_ascii(),
method->signature()->as_quoted_ascii(),
_state,
current_mileage());
// dump the contents of the MDO header as raw data
unsigned char* orig = (unsigned char*)&_orig;
int length = sizeof(_orig);
out->print(" orig %d", length);
for (int i = 0; i < length; i++) {
out->print(" %d", orig[i]);
}
// dump the MDO data as raw data
int elements = data_size() / sizeof(intptr_t);
out->print(" data %d", elements);
for (int i = 0; i < elements; i++) {
// We could use INTPTR_FORMAT here but that's a zero justified
// which makes comparing it with the SA version of this output
// harder.
#ifdef _LP64
out->print(" 0x%" FORMAT64_MODIFIER "x", data()[i]);
#else
out->print(" 0x%x", data()[i]);
#endif
}
// The MDO contained oop references as ciObjects, so scan for those
// and emit pairs of offset and klass name so that they can be
// reconstructed at runtime. The first round counts the number of
// oop references and the second actually emits them.
int count = 0;
for (int round = 0; round < 2; round++) {
if (round == 1) out->print(" oops %d", count);
ProfileData* pdata = first_data();
for ( ; is_valid(pdata); pdata = next_data(pdata)) {
if (pdata->is_ReceiverTypeData()) {
ciReceiverTypeData* vdata = (ciReceiverTypeData*)pdata;
for (uint i = 0; i < vdata->row_limit(); i++) {
ciKlass* k = vdata->receiver(i);
if (k != NULL) {
if (round == 0) {
count++;
} else {
out->print(" %d %s", dp_to_di(vdata->dp() + in_bytes(vdata->receiver_offset(i))) / sizeof(intptr_t), k->name()->as_quoted_ascii());
}
}
}
} else if (pdata->is_VirtualCallData()) {
ciVirtualCallData* vdata = (ciVirtualCallData*)pdata;
for (uint i = 0; i < vdata->row_limit(); i++) {
ciKlass* k = vdata->receiver(i);
if (k != NULL) {
if (round == 0) {
count++;
} else {
out->print(" %d %s", dp_to_di(vdata->dp() + in_bytes(vdata->receiver_offset(i))) / sizeof(intptr_t), k->name()->as_quoted_ascii());
}
}
}
}
}
}
out->cr();
}
#ifndef PRODUCT
void ciMethodData::print() {
print_data_on(tty);