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8184994: Add Dictionary size logging and jcmd

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Added dcmd for printing system dictionary like the stringtable and symboltable and making print functions go to outputstream rather than tty

Reviewed-by: shade, hseigel
This commit is contained in:
Coleen Phillimore 2017-08-02 10:52:50 -04:00
parent 366e6ac796
commit 17f23d1881
30 changed files with 349 additions and 254 deletions
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62
hotspot/src/share/vm/classfile/systemDictionary.cpp
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@ -74,6 +74,7 @@
#include "runtime/orderAccess.inline.hpp"
#include "runtime/signature.hpp"
#include "services/classLoadingService.hpp"
#include "services/diagnosticCommand.hpp"
#include "services/threadService.hpp"
#include "trace/traceMacros.hpp"
#include "utilities/macros.hpp"
@ -2808,33 +2809,32 @@ void SystemDictionary::copy_table(char** top, char* end) {
}
// ----------------------------------------------------------------------------
void SystemDictionary::print_shared(bool details) {
shared_dictionary()->print(details);
void SystemDictionary::print_shared(outputStream *st) {
shared_dictionary()->print_on(st);
}
void SystemDictionary::print(bool details) {
void SystemDictionary::print_on(outputStream *st) {
if (shared_dictionary() != NULL) {
tty->print_cr("Shared Dictionary");
shared_dictionary()->print(details);
shared_dictionary()->print_on(st);
}
GCMutexLocker mu(SystemDictionary_lock);
ClassLoaderDataGraph::print_dictionary(details);
ClassLoaderDataGraph::print_dictionary(st);
// Placeholders
placeholders()->print();
tty->cr();
placeholders()->print_on(st);
st->cr();
// loader constraints - print under SD_lock
constraints()->print();
tty->cr();
constraints()->print_on(st);
st->cr();
_pd_cache_table->print();
tty->cr();
_pd_cache_table->print_on(st);
st->cr();
}
void SystemDictionary::verify() {
guarantee(constraints() != NULL,
"Verify of loader constraints failed");
@ -2855,6 +2855,44 @@ void SystemDictionary::verify() {
_pd_cache_table->verify();
}
void SystemDictionary::dump(outputStream *st, bool verbose) {
assert_locked_or_safepoint(SystemDictionary_lock);
if (verbose) {
print_on(st);
} else {
ClassLoaderDataGraph::print_dictionary_statistics(st);
placeholders()->print_table_statistics(st, "Placeholder Table");
constraints()->print_table_statistics(st, "LoaderConstraints Table");
_pd_cache_table->print_table_statistics(st, "ProtectionDomainCache Table");
}
}
// Utility for dumping dictionaries.
SystemDictionaryDCmd::SystemDictionaryDCmd(outputStream* output, bool heap) :
DCmdWithParser(output, heap),
_verbose("-verbose", "Dump the content of each dictionary entry for all class loaders",
"BOOLEAN", false, "false") {
_dcmdparser.add_dcmd_option(&_verbose);
}
void SystemDictionaryDCmd::execute(DCmdSource source, TRAPS) {
VM_DumpHashtable dumper(output(), VM_DumpHashtable::DumpSysDict,
_verbose.value());
VMThread::execute(&dumper);
}
int SystemDictionaryDCmd::num_arguments() {
ResourceMark rm;
SystemDictionaryDCmd* dcmd = new SystemDictionaryDCmd(NULL, false);
if (dcmd != NULL) {
DCmdMark mark(dcmd);
return dcmd->_dcmdparser.num_arguments();
} else {
return 0;
}
}
// caller needs ResourceMark
const char* SystemDictionary::loader_name(const oop loader) {
return ((loader) == NULL ? "<bootloader>" :