--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/services/nmtDCmd.cpp Thu Jun 28 17:03:16 2012 -0400
@@ -0,0 +1,172 @@
+/*
+ * 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;
+ }
+}
+