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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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46
hotspot/src/share/vm/ci/ciEnv.cpp
View file

@ -30,6 +30,7 @@
#include "ci/ciInstanceKlass.hpp"
#include "ci/ciMethod.hpp"
#include "ci/ciNullObject.hpp"
#include "ci/ciReplay.hpp"
#include "ci/ciUtilities.hpp"
#include "classfile/systemDictionary.hpp"
#include "classfile/vmSymbols.hpp"
@ -772,6 +773,11 @@ ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool,
: !m->method_holder()->is_loaded())) {
m = NULL;
}
#ifdef ASSERT
if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
m = NULL;
}
#endif
if (m != NULL) {
// We found the method.
return get_method(m);
@ -1144,3 +1150,43 @@ void ciEnv::record_out_of_memory_failure() {
// If memory is low, we stop compiling methods.
record_method_not_compilable("out of memory");
}
fileStream* ciEnv::_replay_data_stream = NULL;
void ciEnv::dump_replay_data() {
VM_ENTRY_MARK;
MutexLocker ml(Compile_lock);
if (_replay_data_stream == NULL) {
_replay_data_stream = new (ResourceObj::C_HEAP, mtCompiler) fileStream(ReplayDataFile);
if (_replay_data_stream == NULL) {
fatal(err_msg("Can't open %s for replay data", ReplayDataFile));
}
}
dump_replay_data(_replay_data_stream);
}
void ciEnv::dump_replay_data(outputStream* out) {
ASSERT_IN_VM;
#if INCLUDE_JVMTI
out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
#endif // INCLUDE_JVMTI
GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
out->print_cr("# %d ciObject found", objects->length());
for (int i = 0; i < objects->length(); i++) {
objects->at(i)->dump_replay_data(out);
}
Method* method = task()->method();
int entry_bci = task()->osr_bci();
// Klass holder = method->method_holder();
out->print_cr("compile %s %s %s %d",
method->klass_name()->as_quoted_ascii(),
method->name()->as_quoted_ascii(),
method->signature()->as_quoted_ascii(),
entry_bci);
out->flush();
}