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/*
* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "services/nmtDCmd.hpp"
#include "services/memReporter.hpp"
#include "services/memTracker.hpp"
#include "utilities/globalDefinitions.hpp"
NMTDCmd::NMTDCmd(outputStream* output,
bool heap): DCmdWithParser(output, heap),
_summary("summary", "request runtime to report current memory summary, " \
"which includes total reserved and committed memory, along " \
"with memory usage summary by each subsytem.",
"BOOLEAN", false, "false"),
_detail("detail", "request runtime to report memory allocation >= "
"1K by each callsite.",
"BOOLEAN", false, "false"),
_baseline("baseline", "request runtime to baseline current memory usage, " \
"so it can be compared against in later time.",
"BOOLEAN", false, "false"),
_summary_diff("summary.diff", "request runtime to report memory summary " \
"comparison against previous baseline.",
"BOOLEAN", false, "false"),
_detail_diff("detail.diff", "request runtime to report memory detail " \
"comparison against previous baseline, which shows the memory " \
"allocation activities at different callsites.",
"BOOLEAN", false, "false"),
_shutdown("shutdown", "request runtime to shutdown itself and free the " \
"memory used by runtime.",
"BOOLEAN", false, "false"),
#ifndef PRODUCT
_debug("debug", "print tracker statistics. Debug only, not thread safe", \
"BOOLEAN", false, "false"),
#endif
_scale("scale", "Memory usage in which scale, KB, MB or GB",
"STRING", false, "KB") {
_dcmdparser.add_dcmd_option(&_summary);
_dcmdparser.add_dcmd_option(&_detail);
_dcmdparser.add_dcmd_option(&_baseline);
_dcmdparser.add_dcmd_option(&_summary_diff);
_dcmdparser.add_dcmd_option(&_detail_diff);
_dcmdparser.add_dcmd_option(&_shutdown);
#ifndef PRODUCT
_dcmdparser.add_dcmd_option(&_debug);
#endif
_dcmdparser.add_dcmd_option(&_scale);
}
void NMTDCmd::execute(TRAPS) {
const char* scale_value = _scale.value();
size_t scale_unit;
if (strcmp(scale_value, "KB") == 0 || strcmp(scale_value, "kb") == 0) {
scale_unit = K;
} else if (strcmp(scale_value, "MB") == 0 ||
strcmp(scale_value, "mb") == 0) {
scale_unit = M;
} else if (strcmp(scale_value, "GB") == 0 ||
strcmp(scale_value, "gb") == 0) {
scale_unit = G;
} else {
output()->print_cr("Incorrect scale value: %s", scale_value);
return;
}
int nopt = 0;
if(_summary.is_set()) { ++nopt; }
if(_detail.is_set()) { ++nopt; }
if(_baseline.is_set()) { ++nopt; }
if(_summary_diff.is_set()) { ++nopt; }
if(_detail_diff.is_set()) { ++nopt; }
if(_shutdown.is_set()) { ++nopt; }
#ifndef PRODUCT
if(_debug.is_set()) { ++nopt; }
#endif
if(nopt > 1) {
output()->print_cr("At most one of the following option can be specified: " \
"summary, detail, baseline, summary.diff, detail.diff, shutdown"
#ifndef PRODUCT
" ,debug"
#endif
);
return;
}
if(nopt == 0) {
_summary.set_value(true);
}
#ifndef PRODUCT
if (_debug.value()) {
output()->print_cr("debug command is NOT thread-safe, may cause crash");
MemTracker::print_tracker_stats(output());
return;
}
#endif
// native memory tracking has to be on
if (!MemTracker::is_on() || MemTracker::shutdown_in_progress()) {
// if it is not on, what's the reason?
output()->print_cr(MemTracker::reason());
return;
}
if (_summary.value()) {
BaselineTTYOutputer outputer(output());
MemTracker::print_memory_usage(outputer, scale_unit, true);
} else if (_detail.value()) {
BaselineTTYOutputer outputer(output());
MemTracker::print_memory_usage(outputer, scale_unit, false);
} else if (_baseline.value()) {
if (MemTracker::baseline()) {
output()->print_cr("Successfully baselined.");
} else {
output()->print_cr("Baseline failed.");
}
} else if (_summary_diff.value()) {
if (MemTracker::has_baseline()) {
BaselineTTYOutputer outputer(output());
MemTracker::compare_memory_usage(outputer, scale_unit, true);
} else {
output()->print_cr("No baseline to compare, run 'baseline' command first");
}
} else if (_detail_diff.value()) {
if (MemTracker::has_baseline()) {
BaselineTTYOutputer outputer(output());
MemTracker::compare_memory_usage(outputer, scale_unit, false);
} else {
output()->print_cr("No baseline to compare to, run 'baseline' command first");
}
} else if (_shutdown.value()) {
MemTracker::shutdown(MemTracker::NMT_shutdown_user);
output()->print_cr("Shutdown is in progress, it will take a few moments to " \
"completely shutdown");
} else {
ShouldNotReachHere();
output()->print_cr("Unknown command");
}
}
int NMTDCmd::num_arguments() {
ResourceMark rm;
NMTDCmd* dcmd = new NMTDCmd(NULL, false);
if (dcmd != NULL) {
DCmdMark mark(dcmd);
return dcmd->_dcmdparser.num_arguments();
} else {
return 0;
}
}
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