author | dcubed |
Thu, 03 Sep 2015 10:22:39 -0700 | |
changeset 32614 | b7b2407bc7e5 |
parent 27880 | afb974a04396 |
child 33148 | 68fa8b6c4340 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "classfile/vmSymbols.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "runtime/handles.inline.hpp" |
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#include "runtime/java.hpp" |
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#include "runtime/mutex.hpp" |
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#include "runtime/mutexLocker.hpp" |
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#include "runtime/os.hpp" |
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#include "runtime/perfData.hpp" |
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#include "utilities/exceptions.hpp" |
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#include "utilities/globalDefinitions.hpp" |
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PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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PerfDataList* PerfDataManager::_all = NULL; |
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PerfDataList* PerfDataManager::_sampled = NULL; |
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PerfDataList* PerfDataManager::_constants = NULL; |
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volatile bool PerfDataManager::_has_PerfData = 0; |
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/* |
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* The jvmstat global and subsystem jvmstat counter name spaces. The top |
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* level name spaces imply the interface stability level of the counter, |
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* which generally follows the Java package, class, and property naming |
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* conventions. The CounterNS enumeration values should be used to index |
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* into this array. |
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*/ |
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const char* PerfDataManager::_name_spaces[] = { |
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// top level name spaces |
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"java", // stable and supported name space |
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"com.sun", // unstable but supported name space |
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"sun", // unstable and unsupported name space |
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// subsystem name spaces |
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"java.gc", // Garbage Collection name spaces |
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"com.sun.gc", |
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"sun.gc", |
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"java.ci", // Compiler name spaces |
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"com.sun.ci", |
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"sun.ci", |
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"java.cls", // Class Loader name spaces |
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"com.sun.cls", |
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"sun.cls", |
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"java.rt", // Runtime name spaces |
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"com.sun.rt", |
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"sun.rt", |
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"java.os", // Operating System name spaces |
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"com.sun.os", |
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"sun.os", |
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"java.threads", // Threads System name spaces |
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"com.sun.threads", |
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"sun.threads", |
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"java.property", // Java Property name spaces |
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"com.sun.property", |
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"sun.property", |
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"", |
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}; |
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PerfData::PerfData(CounterNS ns, const char* name, Units u, Variability v) |
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: _name(NULL), _u(u), _v(v), _valuep(NULL), |
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_on_c_heap(false) { |
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const char* prefix = PerfDataManager::ns_to_string(ns); |
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_name = NEW_C_HEAP_ARRAY(char, strlen(name) + strlen(prefix) + 2, mtInternal); |
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assert(_name != NULL && strlen(name) != 0, "invalid name"); |
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if (ns == NULL_NS) { |
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// No prefix is added to counters with the NULL_NS namespace. |
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strcpy(_name, name); |
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// set the F_Supported flag based on the counter name prefix. |
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if (PerfDataManager::is_stable_supported(_name) || |
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PerfDataManager::is_unstable_supported(_name)) { |
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_flags = F_Supported; |
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} |
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else { |
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_flags = F_None; |
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} |
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} |
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else { |
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sprintf(_name, "%s.%s", prefix, name); |
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// set the F_Supported flag based on the given namespace. |
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if (PerfDataManager::is_stable_supported(ns) || |
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PerfDataManager::is_unstable_supported(ns)) { |
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_flags = F_Supported; |
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} |
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else { |
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_flags = F_None; |
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} |
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} |
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} |
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PerfData::~PerfData() { |
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if (_name != NULL) { |
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FREE_C_HEAP_ARRAY(char, _name); |
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} |
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if (is_on_c_heap()) { |
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FREE_C_HEAP_ARRAY(PerfDataEntry, _pdep); |
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} |
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} |
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void PerfData::create_entry(BasicType dtype, size_t dsize, size_t vlen) { |
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size_t dlen = vlen==0 ? 1 : vlen; |
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size_t namelen = strlen(name()) + 1; // include null terminator |
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size_t size = sizeof(PerfDataEntry) + namelen; |
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size_t pad_length = ((size % dsize) == 0) ? 0 : dsize - (size % dsize); |
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size += pad_length; |
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size_t data_start = size; |
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size += (dsize * dlen); |
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// align size to assure allocation in units of 8 bytes |
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int align = sizeof(jlong) - 1; |
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size = ((size + align) & ~align); |
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char* psmp = PerfMemory::alloc(size); |
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if (psmp == NULL) { |
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// out of PerfMemory memory resources. allocate on the C heap |
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// to avoid vm termination. |
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psmp = NEW_C_HEAP_ARRAY(char, size, mtInternal); |
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_on_c_heap = true; |
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} |
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// compute the addresses for the name and data |
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char* cname = psmp + sizeof(PerfDataEntry); |
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// data is in the last dsize*dlen bytes of the entry |
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void* valuep = (void*) (psmp + data_start); |
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assert(is_on_c_heap() || PerfMemory::contains(cname), "just checking"); |
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assert(is_on_c_heap() || PerfMemory::contains((char*)valuep), "just checking"); |
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// copy the name, including null terminator, into PerfData memory |
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strcpy(cname, name()); |
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// set the header values in PerfData memory |
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PerfDataEntry* pdep = (PerfDataEntry*)psmp; |
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pdep->entry_length = (jint)size; |
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pdep->name_offset = (jint) ((uintptr_t) cname - (uintptr_t) psmp); |
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pdep->vector_length = (jint)vlen; |
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pdep->data_type = (jbyte) type2char(dtype); |
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pdep->data_units = units(); |
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pdep->data_variability = variability(); |
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pdep->flags = (jbyte)flags(); |
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pdep->data_offset = (jint) data_start; |
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if (PerfTraceDataCreation) { |
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tty->print("name = %s, dtype = %d, variability = %d," |
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" units = %d, dsize = %d, vlen = %d," |
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" pad_length = %d, size = %d, on_c_heap = %s," |
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" address = " INTPTR_FORMAT "," |
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" data address = " INTPTR_FORMAT "\n", |
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cname, dtype, variability(), |
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units(), dsize, vlen, |
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pad_length, size, is_on_c_heap() ? "TRUE":"FALSE", |
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psmp, valuep); |
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} |
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// record the start of the entry and the location of the data field. |
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_pdep = pdep; |
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_valuep = valuep; |
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// mark the PerfData memory region as having been updated. |
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PerfMemory::mark_updated(); |
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} |
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PerfLong::PerfLong(CounterNS ns, const char* namep, Units u, Variability v) |
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: PerfData(ns, namep, u, v) { |
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create_entry(T_LONG, sizeof(jlong)); |
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} |
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int PerfLong::format(char* buffer, int length) { |
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return jio_snprintf(buffer, length, JLONG_FORMAT, *(jlong*)_valuep); |
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} |
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PerfLongVariant::PerfLongVariant(CounterNS ns, const char* namep, Units u, |
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Variability v, jlong* sampled) |
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: PerfLong(ns, namep, u, v), |
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_sampled(sampled), _sample_helper(NULL) { |
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sample(); |
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} |
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PerfLongVariant::PerfLongVariant(CounterNS ns, const char* namep, Units u, |
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Variability v, PerfLongSampleHelper* helper) |
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: PerfLong(ns, namep, u, v), |
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_sampled(NULL), _sample_helper(helper) { |
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sample(); |
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} |
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void PerfLongVariant::sample() { |
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// JJJ - This should not happen. Maybe the first sample is taken |
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// while the _sample_helper is being null'ed out. |
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// assert(_sample_helper != NULL || _sampled != NULL, "unexpected state"); |
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if (_sample_helper == NULL) return; |
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if (_sample_helper != NULL) { |
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*(jlong*)_valuep = _sample_helper->take_sample(); |
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} |
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else if (_sampled != NULL) { |
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*(jlong*)_valuep = *_sampled; |
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} |
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} |
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PerfByteArray::PerfByteArray(CounterNS ns, const char* namep, Units u, |
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Variability v, jint length) |
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: PerfData(ns, namep, u, v), _length(length) { |
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create_entry(T_BYTE, sizeof(jbyte), (size_t)_length); |
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} |
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void PerfString::set_string(const char* s2) { |
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// copy n bytes of the string, assuring the null string is |
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// copied if s2 == NULL. |
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strncpy((char *)_valuep, s2 == NULL ? "" : s2, _length); |
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// assure the string is null terminated when strlen(s2) >= _length |
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((char*)_valuep)[_length-1] = '\0'; |
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} |
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int PerfString::format(char* buffer, int length) { |
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return jio_snprintf(buffer, length, "%s", (char*)_valuep); |
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} |
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PerfStringConstant::PerfStringConstant(CounterNS ns, const char* namep, |
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const char* initial_value) |
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: PerfString(ns, namep, V_Constant, |
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initial_value == NULL ? 1 : |
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MIN2((jint)(strlen((char*)initial_value)+1), |
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(jint)(PerfMaxStringConstLength+1)), |
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initial_value) { |
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if (PrintMiscellaneous && Verbose) { |
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if (is_valid() && initial_value != NULL && |
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((jint)strlen(initial_value) > (jint)PerfMaxStringConstLength)) { |
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warning("Truncating PerfStringConstant: name = %s," |
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" length = " INT32_FORMAT "," |
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" PerfMaxStringConstLength = " INT32_FORMAT "\n", |
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namep, |
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(jint)strlen(initial_value), |
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(jint)PerfMaxStringConstLength); |
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} |
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} |
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} |
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void PerfDataManager::destroy() { |
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if (_all == NULL) |
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// destroy already called, or initialization never happened |
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return; |
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// Clear the flag before we free the PerfData counters. Thus begins |
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// the race between this thread and another thread that has just |
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// queried PerfDataManager::has_PerfData() and gotten back 'true'. |
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// The hope is that the other thread will finish its PerfData |
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// manipulation before we free the memory. The two alternatives are |
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// 1) leak the PerfData memory or 2) do some form of synchronized |
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// access or check before every PerfData operation. |
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_has_PerfData = false; |
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os::naked_short_sleep(1); // 1ms sleep to let other thread(s) run |
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|
1 | 292 |
for (int index = 0; index < _all->length(); index++) { |
293 |
PerfData* p = _all->at(index); |
|
294 |
delete p; |
|
295 |
} |
|
296 |
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297 |
delete(_all); |
|
298 |
delete(_sampled); |
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299 |
delete(_constants); |
|
300 |
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301 |
_all = NULL; |
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302 |
_sampled = NULL; |
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303 |
_constants = NULL; |
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304 |
} |
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305 |
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306 |
void PerfDataManager::add_item(PerfData* p, bool sampled) { |
|
307 |
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308 |
MutexLocker ml(PerfDataManager_lock); |
|
309 |
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310 |
if (_all == NULL) { |
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311 |
_all = new PerfDataList(100); |
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_has_PerfData = true; |
1 | 313 |
} |
314 |
||
315 |
assert(!_all->contains(p->name()), "duplicate name added"); |
|
316 |
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317 |
// add to the list of all perf data items |
|
318 |
_all->append(p); |
|
319 |
||
320 |
if (p->variability() == PerfData::V_Constant) { |
|
321 |
if (_constants == NULL) { |
|
322 |
_constants = new PerfDataList(25); |
|
323 |
} |
|
324 |
_constants->append(p); |
|
325 |
return; |
|
326 |
} |
|
327 |
||
328 |
if (sampled) { |
|
329 |
if (_sampled == NULL) { |
|
330 |
_sampled = new PerfDataList(25); |
|
331 |
} |
|
332 |
_sampled->append(p); |
|
333 |
} |
|
334 |
} |
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335 |
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18025 | 336 |
PerfData* PerfDataManager::find_by_name(const char* name) { |
337 |
return _all->find_by_name(name); |
|
338 |
} |
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339 |
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1 | 340 |
PerfDataList* PerfDataManager::all() { |
341 |
||
342 |
MutexLocker ml(PerfDataManager_lock); |
|
343 |
||
344 |
if (_all == NULL) |
|
345 |
return NULL; |
|
346 |
||
347 |
PerfDataList* clone = _all->clone(); |
|
348 |
return clone; |
|
349 |
} |
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350 |
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351 |
PerfDataList* PerfDataManager::sampled() { |
|
352 |
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353 |
MutexLocker ml(PerfDataManager_lock); |
|
354 |
||
355 |
if (_sampled == NULL) |
|
356 |
return NULL; |
|
357 |
||
358 |
PerfDataList* clone = _sampled->clone(); |
|
359 |
return clone; |
|
360 |
} |
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361 |
||
362 |
PerfDataList* PerfDataManager::constants() { |
|
363 |
||
364 |
MutexLocker ml(PerfDataManager_lock); |
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365 |
||
366 |
if (_constants == NULL) |
|
367 |
return NULL; |
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368 |
||
369 |
PerfDataList* clone = _constants->clone(); |
|
370 |
return clone; |
|
371 |
} |
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372 |
||
373 |
char* PerfDataManager::counter_name(const char* ns, const char* name) { |
|
374 |
assert(ns != NULL, "ns string required"); |
|
375 |
assert(name != NULL, "name string required"); |
|
376 |
||
377 |
size_t len = strlen(ns) + strlen(name) + 2; |
|
378 |
char* result = NEW_RESOURCE_ARRAY(char, len); |
|
379 |
sprintf(result, "%s.%s", ns, name); |
|
380 |
return result; |
|
381 |
} |
|
382 |
||
383 |
char* PerfDataManager::name_space(const char* ns, const char* sub, |
|
384 |
int instance) { |
|
385 |
char intbuf[40]; |
|
386 |
jio_snprintf(intbuf, 40, UINT32_FORMAT, instance); |
|
387 |
return name_space(ns, name_space(sub, intbuf)); |
|
388 |
} |
|
389 |
||
390 |
char *PerfDataManager::name_space(const char* ns, int instance) { |
|
391 |
char intbuf[40]; |
|
392 |
jio_snprintf(intbuf, 40, UINT32_FORMAT, instance); |
|
393 |
return name_space(ns, intbuf); |
|
394 |
} |
|
395 |
||
396 |
PerfStringConstant* PerfDataManager::create_string_constant(CounterNS ns, |
|
397 |
const char* name, |
|
398 |
const char* s, |
|
399 |
TRAPS) { |
|
400 |
||
401 |
PerfStringConstant* p = new PerfStringConstant(ns, name, s); |
|
402 |
||
403 |
if (!p->is_valid()) { |
|
404 |
// allocation of native resources failed. |
|
405 |
delete p; |
|
406 |
THROW_0(vmSymbols::java_lang_OutOfMemoryError()); |
|
407 |
} |
|
408 |
||
409 |
add_item(p, false); |
|
410 |
||
411 |
return p; |
|
412 |
} |
|
413 |
||
414 |
PerfLongConstant* PerfDataManager::create_long_constant(CounterNS ns, |
|
415 |
const char* name, |
|
416 |
PerfData::Units u, |
|
417 |
jlong val, TRAPS) { |
|
418 |
||
419 |
PerfLongConstant* p = new PerfLongConstant(ns, name, u, val); |
|
420 |
||
421 |
if (!p->is_valid()) { |
|
422 |
// allocation of native resources failed. |
|
423 |
delete p; |
|
424 |
THROW_0(vmSymbols::java_lang_OutOfMemoryError()); |
|
425 |
} |
|
426 |
||
427 |
add_item(p, false); |
|
428 |
||
429 |
return p; |
|
430 |
} |
|
431 |
||
432 |
PerfStringVariable* PerfDataManager::create_string_variable(CounterNS ns, |
|
433 |
const char* name, |
|
434 |
jint max_length, |
|
435 |
const char* s, |
|
436 |
TRAPS) { |
|
437 |
||
438 |
if (max_length == 0 && s != NULL) max_length = (jint)strlen(s); |
|
439 |
||
440 |
assert(max_length != 0, "PerfStringVariable with length 0"); |
|
441 |
||
442 |
PerfStringVariable* p = new PerfStringVariable(ns, name, max_length, s); |
|
443 |
||
444 |
if (!p->is_valid()) { |
|
445 |
// allocation of native resources failed. |
|
446 |
delete p; |
|
447 |
THROW_0(vmSymbols::java_lang_OutOfMemoryError()); |
|
448 |
} |
|
449 |
||
450 |
add_item(p, false); |
|
451 |
||
452 |
return p; |
|
453 |
} |
|
454 |
||
455 |
PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns, |
|
456 |
const char* name, |
|
457 |
PerfData::Units u, |
|
458 |
jlong ival, TRAPS) { |
|
459 |
||
460 |
PerfLongVariable* p = new PerfLongVariable(ns, name, u, ival); |
|
461 |
||
462 |
if (!p->is_valid()) { |
|
463 |
// allocation of native resources failed. |
|
464 |
delete p; |
|
465 |
THROW_0(vmSymbols::java_lang_OutOfMemoryError()); |
|
466 |
} |
|
467 |
||
468 |
add_item(p, false); |
|
469 |
||
470 |
return p; |
|
471 |
} |
|
472 |
||
473 |
PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns, |
|
474 |
const char* name, |
|
475 |
PerfData::Units u, |
|
476 |
jlong* sp, TRAPS) { |
|
477 |
||
478 |
// Sampled counters not supported if UsePerfData is false |
|
479 |
if (!UsePerfData) return NULL; |
|
480 |
||
481 |
PerfLongVariable* p = new PerfLongVariable(ns, name, u, sp); |
|
482 |
||
483 |
if (!p->is_valid()) { |
|
484 |
// allocation of native resources failed. |
|
485 |
delete p; |
|
486 |
THROW_0(vmSymbols::java_lang_OutOfMemoryError()); |
|
487 |
} |
|
488 |
||
489 |
add_item(p, true); |
|
490 |
||
491 |
return p; |
|
492 |
} |
|
493 |
||
494 |
PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns, |
|
495 |
const char* name, |
|
496 |
PerfData::Units u, |
|
497 |
PerfSampleHelper* sh, |
|
498 |
TRAPS) { |
|
499 |
||
500 |
// Sampled counters not supported if UsePerfData is false |
|
501 |
if (!UsePerfData) return NULL; |
|
502 |
||
503 |
PerfLongVariable* p = new PerfLongVariable(ns, name, u, sh); |
|
504 |
||
505 |
if (!p->is_valid()) { |
|
506 |
// allocation of native resources failed. |
|
507 |
delete p; |
|
508 |
THROW_0(vmSymbols::java_lang_OutOfMemoryError()); |
|
509 |
} |
|
510 |
||
511 |
add_item(p, true); |
|
512 |
||
513 |
return p; |
|
514 |
} |
|
515 |
||
516 |
PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns, |
|
517 |
const char* name, |
|
518 |
PerfData::Units u, |
|
519 |
jlong ival, TRAPS) { |
|
520 |
||
521 |
PerfLongCounter* p = new PerfLongCounter(ns, name, u, ival); |
|
522 |
||
523 |
if (!p->is_valid()) { |
|
524 |
// allocation of native resources failed. |
|
525 |
delete p; |
|
526 |
THROW_0(vmSymbols::java_lang_OutOfMemoryError()); |
|
527 |
} |
|
528 |
||
529 |
add_item(p, false); |
|
530 |
||
531 |
return p; |
|
532 |
} |
|
533 |
||
534 |
PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns, |
|
535 |
const char* name, |
|
536 |
PerfData::Units u, |
|
537 |
jlong* sp, TRAPS) { |
|
538 |
||
539 |
// Sampled counters not supported if UsePerfData is false |
|
540 |
if (!UsePerfData) return NULL; |
|
541 |
||
542 |
PerfLongCounter* p = new PerfLongCounter(ns, name, u, sp); |
|
543 |
||
544 |
if (!p->is_valid()) { |
|
545 |
// allocation of native resources failed. |
|
546 |
delete p; |
|
547 |
THROW_0(vmSymbols::java_lang_OutOfMemoryError()); |
|
548 |
} |
|
549 |
||
550 |
add_item(p, true); |
|
551 |
||
552 |
return p; |
|
553 |
} |
|
554 |
||
555 |
PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns, |
|
556 |
const char* name, |
|
557 |
PerfData::Units u, |
|
558 |
PerfSampleHelper* sh, |
|
559 |
TRAPS) { |
|
560 |
||
561 |
// Sampled counters not supported if UsePerfData is false |
|
562 |
if (!UsePerfData) return NULL; |
|
563 |
||
564 |
PerfLongCounter* p = new PerfLongCounter(ns, name, u, sh); |
|
565 |
||
566 |
if (!p->is_valid()) { |
|
567 |
// allocation of native resources failed. |
|
568 |
delete p; |
|
569 |
THROW_0(vmSymbols::java_lang_OutOfMemoryError()); |
|
570 |
} |
|
571 |
||
572 |
add_item(p, true); |
|
573 |
||
574 |
return p; |
|
575 |
} |
|
576 |
||
577 |
PerfDataList::PerfDataList(int length) { |
|
578 |
||
13195 | 579 |
_set = new(ResourceObj::C_HEAP, mtInternal) PerfDataArray(length, true); |
1 | 580 |
} |
581 |
||
582 |
PerfDataList::PerfDataList(PerfDataList* p) { |
|
583 |
||
13195 | 584 |
_set = new(ResourceObj::C_HEAP, mtInternal) PerfDataArray(p->length(), true); |
1 | 585 |
|
586 |
_set->appendAll(p->get_impl()); |
|
587 |
} |
|
588 |
||
589 |
PerfDataList::~PerfDataList() { |
|
590 |
||
591 |
delete _set; |
|
592 |
||
593 |
} |
|
594 |
||
595 |
bool PerfDataList::by_name(void* name, PerfData* pd) { |
|
596 |
||
597 |
if (pd == NULL) |
|
598 |
return false; |
|
599 |
||
600 |
return strcmp((const char*)name, pd->name()) == 0; |
|
601 |
} |
|
602 |
||
603 |
PerfData* PerfDataList::find_by_name(const char* name) { |
|
604 |
||
13975
2f7431485cfa
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
13728
diff
changeset
|
605 |
// if add_item hasn't been called the list won't be initialized |
2f7431485cfa
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
13728
diff
changeset
|
606 |
if (this == NULL) |
2f7431485cfa
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
13728
diff
changeset
|
607 |
return NULL; |
2f7431485cfa
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
13728
diff
changeset
|
608 |
|
1 | 609 |
int i = _set->find((void*)name, PerfDataList::by_name); |
610 |
||
611 |
if (i >= 0 && i <= _set->length()) |
|
612 |
return _set->at(i); |
|
613 |
else |
|
614 |
return NULL; |
|
615 |
} |
|
616 |
||
617 |
PerfDataList* PerfDataList::clone() { |
|
618 |
||
619 |
PerfDataList* copy = new PerfDataList(this); |
|
620 |
||
621 |
assert(copy != NULL, "just checking"); |
|
622 |
||
623 |
return copy; |
|
624 |
} |