StubCodeGenerator::~StubCodeGenerator() {
if (PrintStubCode || _print_code) {
CodeBuffer* cbuf = _masm->code();
CodeBlob* blob = CodeCache::find_blob_unsafe(cbuf->insts()->start());
if (blob != NULL) {
blob->set_strings(cbuf->strings());
}
bool saw_first = false;
StubCodeDesc* toprint[1000];
int toprint_len = 0;
for (StubCodeDesc* cdesc = _last_stub; cdesc != NULL; cdesc = cdesc->_next) {
toprint[toprint_len++] = cdesc;
if (cdesc == _first_stub) { saw_first = true; break; }
}
assert(saw_first, "must get both first & last");
// Print in reverse order:
qsort(toprint, toprint_len, sizeof(toprint[0]), compare_cdesc);
for (int i = 0; i < toprint_len; i++) {
StubCodeDesc* cdesc = toprint[i];
cdesc->print();
tty->cr();
Disassembler::decode(cdesc->begin(), cdesc->end());
tty->cr();
}
}
}
void CodeBlobCollector::collect() {
assert_locked_or_safepoint(CodeCache_lock);
assert(_global_code_blobs == NULL, "checking");
// create the global list
_global_code_blobs = new (ResourceObj::C_HEAP) GrowableArray<JvmtiCodeBlobDesc*>(50,true);
// iterate over the stub code descriptors and put them in the list first.
int index = 0;
StubCodeDesc* desc;
while ((desc = StubCodeDesc::desc_for_index(++index)) != NULL) {
_global_code_blobs->append(new JvmtiCodeBlobDesc(desc->name(), desc->begin(), desc->end()));
}
// next iterate over all the non-nmethod code blobs and add them to
// the list - as noted above this will filter out duplicates and
// enclosing blobs.
Unimplemented();
//CodeCache::blobs_do(do_blob);
// make the global list the instance list so that it can be used
// for other iterations.
_code_blobs = _global_code_blobs;
_global_code_blobs = NULL;
}
void CodeBlobCollector::collect() {
assert_locked_or_safepoint(CodeCache_lock);
assert(_global_code_blobs == NULL, "checking");
// create the global list
_global_code_blobs = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<JvmtiCodeBlobDesc*>(50,true);
// iterate over the stub code descriptors and put them in the list first.
for (StubCodeDesc* desc = StubCodeDesc::first(); desc != NULL; desc = StubCodeDesc::next(desc)) {
_global_code_blobs->append(new JvmtiCodeBlobDesc(desc->name(), desc->begin(), desc->end()));
}
// Vtable stubs are not described with StubCodeDesc,
// process them separately
VtableStubs::vtable_stub_do(do_vtable_stub);
// next iterate over all the non-nmethod code blobs and add them to
// the list - as noted above this will filter out duplicates and
// enclosing blobs.
CodeCache::blobs_do(do_blob);
// make the global list the instance list so that it can be used
// for other iterations.
_code_blobs = _global_code_blobs;
_global_code_blobs = NULL;
}
void VMError::report(outputStream* st, bool _verbose) {
# define BEGIN if (_current_step == 0) { _current_step = __LINE__;
# define STEP(s) } if (_current_step < __LINE__) { _current_step = __LINE__; _current_step_info = s;
# define END }
// don't allocate large buffer on stack
static char buf[O_BUFLEN];
BEGIN
STEP("printing fatal error message")
st->print_cr("#");
if (should_report_bug(_id)) {
st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
} else {
st->print_cr("# There is insufficient memory for the Java "
"Runtime Environment to continue.");
}
#ifndef PRODUCT
// Error handler self tests
// test secondary error handling. Test it twice, to test that resetting
// error handler after a secondary crash works.
STEP("test secondary crash 1")
if (_verbose && TestCrashInErrorHandler != 0) {
st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
TestCrashInErrorHandler);
controlled_crash(TestCrashInErrorHandler);
}
STEP("test secondary crash 2")
if (_verbose && TestCrashInErrorHandler != 0) {
st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
TestCrashInErrorHandler);
controlled_crash(TestCrashInErrorHandler);
}
STEP("test safefetch in error handler")
// test whether it is safe to use SafeFetch32 in Crash Handler. Test twice
// to test that resetting the signal handler works correctly.
if (_verbose && TestSafeFetchInErrorHandler) {
st->print_cr("Will test SafeFetch...");
if (CanUseSafeFetch32()) {
int* const invalid_pointer = (int*) get_segfault_address();
const int x = 0x76543210;
int i1 = SafeFetch32(invalid_pointer, x);
int i2 = SafeFetch32(invalid_pointer, x);
if (i1 == x && i2 == x) {
st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern
} else {
st->print_cr("??");
}
} else {
st->print_cr("not possible; skipped.");
}
}
#endif // PRODUCT
STEP("printing type of error")
switch(_id) {
case OOM_MALLOC_ERROR:
case OOM_MMAP_ERROR:
if (_size) {
st->print("# Native memory allocation ");
st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
"(mmap) failed to map ");
jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
st->print("%s", buf);
st->print(" bytes");
if (strlen(_detail_msg) > 0) {
st->print(" for ");
st->print("%s", _detail_msg);
}
st->cr();
} else {
if (strlen(_detail_msg) > 0) {
st->print("# ");
st->print_cr("%s", _detail_msg);
}
}
// In error file give some solutions
if (_verbose) {
print_oom_reasons(st);
} else {
return; // that's enough for the screen
}
break;
case INTERNAL_ERROR:
default:
break;
}
STEP("printing exception/signal name")
st->print_cr("#");
st->print("# ");
// Is it an OS exception/signal?
if (os::exception_name(_id, buf, sizeof(buf))) {
st->print("%s", buf);
st->print(" (0x%x)", _id); // signal number
st->print(" at pc=" PTR_FORMAT, p2i(_pc));
} else {
if (should_report_bug(_id)) {
st->print("Internal Error");
} else {
st->print("Out of Memory Error");
}
if (_filename != NULL && _lineno > 0) {
#ifdef PRODUCT
// In product mode chop off pathname?
char separator = os::file_separator()[0];
const char *p = strrchr(_filename, separator);
const char *file = p ? p+1 : _filename;
#else
const char *file = _filename;
#endif
st->print(" (%s:%d)", file, _lineno);
} else {
st->print(" (0x%x)", _id);
}
}
STEP("printing current thread and pid")
// process id, thread id
st->print(", pid=%d", os::current_process_id());
st->print(", tid=" UINTX_FORMAT, os::current_thread_id());
st->cr();
STEP("printing error message")
if (should_report_bug(_id)) { // already printed the message.
// error message
if (strlen(_detail_msg) > 0) {
st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg);
} else if (_message) {
st->print_cr("# Error: %s", _message);
}
}
STEP("printing Java version string")
report_vm_version(st, buf, sizeof(buf));
STEP("printing problematic frame")
// Print current frame if we have a context (i.e. it's a crash)
if (_context) {
st->print_cr("# Problematic frame:");
st->print("# ");
frame fr = os::fetch_frame_from_context(_context);
fr.print_on_error(st, buf, sizeof(buf));
st->cr();
st->print_cr("#");
}
STEP("printing core file information")
st->print("# ");
if (CreateCoredumpOnCrash) {
if (coredump_status) {
st->print("Core dump will be written. Default location: %s", coredump_message);
} else {
st->print("No core dump will be written. %s", coredump_message);
}
} else {
st->print("CreateCoredumpOnCrash turned off, no core file dumped");
}
st->cr();
st->print_cr("#");
STEP("printing bug submit message")
if (should_report_bug(_id) && _verbose) {
print_bug_submit_message(st, _thread);
}
STEP("printing summary")
if (_verbose) {
st->cr();
st->print_cr("--------------- S U M M A R Y ------------");
st->cr();
}
STEP("printing VM option summary")
if (_verbose) {
// VM options
Arguments::print_summary_on(st);
st->cr();
}
STEP("printing summary machine and OS info")
if (_verbose) {
os::print_summary_info(st, buf, sizeof(buf));
}
STEP("printing date and time")
if (_verbose) {
os::print_date_and_time(st, buf, sizeof(buf));
}
STEP("printing thread")
if (_verbose) {
st->cr();
st->print_cr("--------------- T H R E A D ---------------");
st->cr();
}
STEP("printing current thread")
// current thread
if (_verbose) {
if (_thread) {
st->print("Current thread (" PTR_FORMAT "): ", p2i(_thread));
_thread->print_on_error(st, buf, sizeof(buf));
st->cr();
} else {
st->print_cr("Current thread is native thread");
}
st->cr();
}
STEP("printing current compile task")
if (_verbose && _thread && _thread->is_Compiler_thread()) {
CompilerThread* t = (CompilerThread*)_thread;
if (t->task()) {
st->cr();
st->print_cr("Current CompileTask:");
t->task()->print_line_on_error(st, buf, sizeof(buf));
st->cr();
}
}
STEP("printing stack bounds")
if (_verbose) {
st->print("Stack: ");
address stack_top;
size_t stack_size;
if (_thread) {
stack_top = _thread->stack_base();
stack_size = _thread->stack_size();
} else {
stack_top = os::current_stack_base();
stack_size = os::current_stack_size();
}
address stack_bottom = stack_top - stack_size;
st->print("[" PTR_FORMAT "," PTR_FORMAT "]", p2i(stack_bottom), p2i(stack_top));
frame fr = _context ? os::fetch_frame_from_context(_context)
: os::current_frame();
if (fr.sp()) {
st->print(", sp=" PTR_FORMAT, p2i(fr.sp()));
size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
st->print(", free space=" SIZE_FORMAT "k", free_stack_size);
}
st->cr();
}
STEP("printing native stack")
if (_verbose) {
if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
// We have printed the native stack in platform-specific code
// Windows/x64 needs special handling.
} else {
frame fr = _context ? os::fetch_frame_from_context(_context)
: os::current_frame();
print_native_stack(st, fr, _thread, buf, sizeof(buf));
}
}
STEP("printing Java stack")
if (_verbose && _thread && _thread->is_Java_thread()) {
print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
}
STEP("printing target Java thread stack")
// printing Java thread stack trace if it is involved in GC crash
if (_verbose && _thread && (_thread->is_Named_thread())) {
JavaThread* jt = ((NamedThread *)_thread)->processed_thread();
if (jt != NULL) {
st->print_cr("JavaThread " PTR_FORMAT " (nid = %d) was being processed", p2i(jt), jt->osthread()->thread_id());
print_stack_trace(st, jt, buf, sizeof(buf), true);
}
}
STEP("printing siginfo")
// signal no, signal code, address that caused the fault
if (_verbose && _siginfo) {
st->cr();
os::print_siginfo(st, _siginfo);
st->cr();
}
STEP("CDS archive access warning")
// Print an explicit hint if we crashed on access to the CDS archive.
if (_verbose && _siginfo) {
check_failing_cds_access(st, _siginfo);
st->cr();
}
STEP("printing register info")
// decode register contents if possible
if (_verbose && _context && Universe::is_fully_initialized()) {
os::print_register_info(st, _context);
st->cr();
}
STEP("printing registers, top of stack, instructions near pc")
// registers, top of stack, instructions near pc
if (_verbose && _context) {
os::print_context(st, _context);
st->cr();
}
STEP("printing code blob if possible")
if (_verbose && _context) {
CodeBlob* cb = CodeCache::find_blob(_pc);
if (cb != NULL) {
if (Interpreter::contains(_pc)) {
// The interpreter CodeBlob is very large so try to print the codelet instead.
InterpreterCodelet* codelet = Interpreter::codelet_containing(_pc);
if (codelet != NULL) {
codelet->print_on(st);
Disassembler::decode(codelet->code_begin(), codelet->code_end(), st);
}
} else {
StubCodeDesc* desc = StubCodeDesc::desc_for(_pc);
if (desc != NULL) {
desc->print_on(st);
Disassembler::decode(desc->begin(), desc->end(), st);
} else {
Disassembler::decode(cb, st);
st->cr();
}
}
}
}
STEP("printing VM operation")
if (_verbose && _thread && _thread->is_VM_thread()) {
VMThread* t = (VMThread*)_thread;
VM_Operation* op = t->vm_operation();
if (op) {
op->print_on_error(st);
st->cr();
st->cr();
}
}
STEP("printing process")
if (_verbose) {
st->cr();
st->print_cr("--------------- P R O C E S S ---------------");
st->cr();
}
STEP("printing all threads")
// all threads
if (_verbose && _thread) {
Threads::print_on_error(st, _thread, buf, sizeof(buf));
st->cr();
}
STEP("printing VM state")
if (_verbose) {
// Safepoint state
st->print("VM state:");
if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
else st->print("not at safepoint");
// Also see if error occurred during initialization or shutdown
if (!Universe::is_fully_initialized()) {
st->print(" (not fully initialized)");
} else if (VM_Exit::vm_exited()) {
st->print(" (shutting down)");
} else {
st->print(" (normal execution)");
}
st->cr();
st->cr();
}
STEP("printing owned locks on error")
// mutexes/monitors that currently have an owner
if (_verbose) {
print_owned_locks_on_error(st);
st->cr();
}
STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
if (_verbose && Exceptions::has_exception_counts()) {
st->print_cr("OutOfMemory and StackOverflow Exception counts:");
Exceptions::print_exception_counts_on_error(st);
st->cr();
}
STEP("printing compressed oops mode")
if (_verbose && UseCompressedOops) {
Universe::print_compressed_oops_mode(st);
if (UseCompressedClassPointers) {
Metaspace::print_compressed_class_space(st);
}
st->cr();
}
STEP("printing heap information")
if (_verbose && Universe::is_fully_initialized()) {
Universe::heap()->print_on_error(st);
st->cr();
st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page()));
st->cr();
}
STEP("printing code cache information")
if (_verbose && Universe::is_fully_initialized()) {
// print code cache information before vm abort
CodeCache::print_summary(st);
st->cr();
}
STEP("printing ring buffers")
if (_verbose) {
Events::print_all(st);
st->cr();
}
STEP("printing dynamic libraries")
if (_verbose) {
// dynamic libraries, or memory map
os::print_dll_info(st);
st->cr();
}
STEP("printing VM options")
if (_verbose) {
// VM options
Arguments::print_on(st);
st->cr();
}
STEP("printing warning if internal testing API used")
if (WhiteBox::used()) {
st->print_cr("Unsupported internal testing APIs have been used.");
st->cr();
}
STEP("printing log configuration")
if (_verbose){
st->print_cr("Logging:");
LogConfiguration::describe_current_configuration(st);
st->cr();
}
STEP("printing all environment variables")
if (_verbose) {
os::print_environment_variables(st, env_list);
st->cr();
}
STEP("printing signal handlers")
if (_verbose) {
os::print_signal_handlers(st, buf, sizeof(buf));
st->cr();
}
STEP("Native Memory Tracking")
if (_verbose) {
MemTracker::error_report(st);
}
STEP("printing system")
if (_verbose) {
st->cr();
st->print_cr("--------------- S Y S T E M ---------------");
st->cr();
}
STEP("printing OS information")
if (_verbose) {
os::print_os_info(st);
st->cr();
}
STEP("printing CPU info")
if (_verbose) {
os::print_cpu_info(st, buf, sizeof(buf));
st->cr();
}
STEP("printing memory info")
if (_verbose) {
os::print_memory_info(st);
st->cr();
}
STEP("printing internal vm info")
if (_verbose) {
st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
st->cr();
}
// print a defined marker to show that error handling finished correctly.
STEP("printing end marker")
if (_verbose) {
st->print_cr("END.");
}
END
# undef BEGIN
# undef STEP
# undef END
}