--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/runtime/memprofiler.cpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,125 @@
+/*
+ * Copyright 1998-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+# include "incls/_precompiled.incl"
+# include "incls/_memprofiler.cpp.incl"
+
+#ifndef PRODUCT
+
+// --------------------------------------------------------
+// MemProfilerTask
+
+class MemProfilerTask : public PeriodicTask {
+ public:
+ MemProfilerTask(int interval_time) : PeriodicTask(interval_time) {}
+ void task();
+};
+
+
+void MemProfilerTask::task() {
+ // Get thread lock to provide mutual exclusion, and so we can iterate safely over the thread list.
+ MutexLocker mu(Threads_lock);
+ MemProfiler::do_trace();
+}
+
+
+//----------------------------------------------------------
+// Implementation of MemProfiler
+
+MemProfilerTask* MemProfiler::_task = NULL;
+FILE* MemProfiler::_log_fp = NULL;
+
+
+bool MemProfiler::is_active() {
+ return _task != NULL;
+}
+
+
+void MemProfiler::engage() {
+ const char *log_name = "mprofile.log";
+ if (!is_active()) {
+ // Create log file
+ _log_fp = fopen(log_name , "w+");
+ if (_log_fp == NULL) {
+ fatal1("MemProfiler: Cannot create log file: %s", log_name);
+ }
+ fprintf(_log_fp, "MemProfiler: sizes are in Kb, time is in seconds since startup\n\n");
+ fprintf(_log_fp, " time, #thr, #cls, heap, heap, perm, perm, code, hndls, rescs, oopmp\n");
+ fprintf(_log_fp, " used, total, used, total, total, total, total, total\n");
+ fprintf(_log_fp, "--------------------------------------------------------------------------\n");
+
+ _task = new MemProfilerTask(MemProfilingInterval);
+ _task->enroll();
+ }
+}
+
+
+void MemProfiler::disengage() {
+ if (!is_active()) return;
+ // Do one last trace at disengage time
+ do_trace();
+
+ // Close logfile
+ fprintf(_log_fp, "MemProfiler detached\n");
+ fclose(_log_fp);
+
+ // remove MemProfilerTask
+ assert(_task != NULL, "sanity check");
+ _task->disenroll();
+ delete _task;
+ _task = NULL;
+}
+
+
+void MemProfiler::do_trace() {
+ // Calculate thread local sizes
+ size_t handles_memory_usage = VMThread::vm_thread()->handle_area()->size_in_bytes();
+ size_t resource_memory_usage = VMThread::vm_thread()->resource_area()->size_in_bytes();
+ JavaThread *cur = Threads::first();
+ while (cur != NULL) {
+ handles_memory_usage += cur->handle_area()->size_in_bytes();
+ resource_memory_usage += cur->resource_area()->size_in_bytes();
+ cur = cur->next();
+ }
+
+ // Print trace line in log
+ fprintf(_log_fp, "%6.1f,%5d,%5d,%6ld,%6ld,%6ld,%6ld,",
+ os::elapsedTime(),
+ Threads::number_of_threads(),
+ SystemDictionary::number_of_classes(),
+ Universe::heap()->used() / K,
+ Universe::heap()->capacity() / K,
+ Universe::heap()->permanent_used() / HWperKB,
+ Universe::heap()->permanent_capacity() / HWperKB);
+
+ fprintf(_log_fp, "%6ld,", CodeCache::capacity() / K);
+
+ fprintf(_log_fp, "%6ld,%6ld,%6ld\n",
+ handles_memory_usage / K,
+ resource_memory_usage / K,
+ OopMapCache::memory_usage() / K);
+ fflush(_log_fp);
+}
+
+#endif