duke@435: /*
hseigel@4465:  * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "classfile/vmSymbols.hpp"
stefank@2314: #include "oops/oop.inline.hpp"
stefank@2314: #include "runtime/handles.inline.hpp"
stefank@2314: #include "runtime/java.hpp"
stefank@2314: #include "runtime/mutex.hpp"
stefank@2314: #include "runtime/mutexLocker.hpp"
stefank@2314: #include "runtime/os.hpp"
stefank@2314: #include "runtime/perfData.hpp"
stefank@2314: #include "utilities/exceptions.hpp"
stefank@2314: #include "utilities/globalDefinitions.hpp"
duke@435: 
duke@435: PerfDataList*   PerfDataManager::_all = NULL;
duke@435: PerfDataList*   PerfDataManager::_sampled = NULL;
duke@435: PerfDataList*   PerfDataManager::_constants = NULL;
duke@435: 
duke@435: /*
duke@435:  * The jvmstat global and subsysem jvmstat counter name spaces. The top
duke@435:  * level name spaces imply the interface stability level of the counter,
duke@435:  * which generally follows the Java package, class, and property naming
duke@435:  * conventions. The CounterNS enumeration values should be used to index
duke@435:  * into this array.
duke@435:  */
duke@435: const char* PerfDataManager::_name_spaces[] = {
duke@435:   // top level name spaces
duke@435:   "java",                   // stable and supported name space
duke@435:   "com.sun",                // unstable but supported name space
duke@435:   "sun",                    // unstable and unsupported name space
duke@435:   // subsystem name spaces
duke@435:   "java.gc",                // Garbage Collection name spaces
duke@435:   "com.sun.gc",
duke@435:   "sun.gc",
duke@435:   "java.ci",                // Compiler name spaces
duke@435:   "com.sun.ci",
duke@435:   "sun.ci",
duke@435:   "java.cls",               // Class Loader name spaces
duke@435:   "com.sun.cls",
duke@435:   "sun.cls",
duke@435:   "java.rt",                // Runtime name spaces
duke@435:   "com.sun.rt",
duke@435:   "sun.rt",
duke@435:   "java.os",                // Operating System name spaces
duke@435:   "com.sun.os",
duke@435:   "sun.os",
duke@435:   "java.threads",           // Threads System name spaces
duke@435:   "com.sun.threads",
duke@435:   "sun.threads",
duke@435:   "java.property",          // Java Property name spaces
duke@435:   "com.sun.property",
duke@435:   "sun.property",
duke@435:   "",
duke@435: };
duke@435: 
duke@435: PerfData::PerfData(CounterNS ns, const char* name, Units u, Variability v)
duke@435:                   : _name(NULL), _u(u), _v(v), _valuep(NULL),
duke@435:                     _on_c_heap(false) {
duke@435: 
duke@435:   const char* prefix = PerfDataManager::ns_to_string(ns);
duke@435: 
zgu@3900:   _name = NEW_C_HEAP_ARRAY(char, strlen(name) + strlen(prefix) + 2, mtInternal);
duke@435:   assert(_name != NULL && strlen(name) != 0, "invalid name");
duke@435: 
duke@435:   if (ns == NULL_NS) {
duke@435:      // No prefix is added to counters with the NULL_NS namespace.
duke@435:      strcpy(_name, name);
duke@435:      // set the F_Supported flag based on the counter name prefix.
duke@435:      if (PerfDataManager::is_stable_supported(_name) ||
duke@435:          PerfDataManager::is_unstable_supported(_name)) {
duke@435:        _flags = F_Supported;
duke@435:      }
duke@435:      else {
duke@435:        _flags = F_None;
duke@435:      }
duke@435:   }
duke@435:   else {
duke@435:     sprintf(_name, "%s.%s", prefix, name);
duke@435:     // set the F_Supported flag based on the given namespace.
duke@435:     if (PerfDataManager::is_stable_supported(ns) ||
duke@435:         PerfDataManager::is_unstable_supported(ns)) {
duke@435:       _flags = F_Supported;
duke@435:     }
duke@435:     else {
duke@435:       _flags = F_None;
duke@435:     }
duke@435:   }
duke@435: }
duke@435: 
duke@435: PerfData::~PerfData() {
duke@435:   if (_name != NULL) {
zgu@3900:     FREE_C_HEAP_ARRAY(char, _name, mtInternal);
duke@435:   }
duke@435:   if (is_on_c_heap()) {
zgu@3900:     FREE_C_HEAP_ARRAY(PerfDataEntry, _pdep, mtInternal);
duke@435:   }
duke@435: }
duke@435: 
duke@435: void PerfData::create_entry(BasicType dtype, size_t dsize, size_t vlen) {
duke@435: 
duke@435:   size_t dlen = vlen==0 ? 1 : vlen;
duke@435: 
duke@435:   size_t namelen = strlen(name()) + 1;  // include null terminator
duke@435:   size_t size = sizeof(PerfDataEntry) + namelen;
duke@435:   size_t pad_length = ((size % dsize) == 0) ? 0 : dsize - (size % dsize);
duke@435:   size += pad_length;
duke@435:   size_t data_start = size;
duke@435:   size += (dsize * dlen);
duke@435: 
duke@435:   // align size to assure allocation in units of 8 bytes
duke@435:   int align = sizeof(jlong) - 1;
duke@435:   size = ((size + align) & ~align);
duke@435:   char* psmp = PerfMemory::alloc(size);
duke@435: 
duke@435:   if (psmp == NULL) {
duke@435:     // out of PerfMemory memory resources. allocate on the C heap
duke@435:     // to avoid vm termination.
zgu@3900:     psmp = NEW_C_HEAP_ARRAY(char, size, mtInternal);
duke@435:     _on_c_heap = true;
duke@435:   }
duke@435: 
duke@435:   // compute the addresses for the name and data
duke@435:   char* cname = psmp + sizeof(PerfDataEntry);
duke@435: 
duke@435:   // data is in the last dsize*dlen bytes of the entry
duke@435:   void* valuep = (void*) (psmp + data_start);
duke@435: 
duke@435:   assert(is_on_c_heap() || PerfMemory::contains(cname), "just checking");
duke@435:   assert(is_on_c_heap() || PerfMemory::contains((char*)valuep), "just checking");
duke@435: 
duke@435:   // copy the name, including null terminator, into PerfData memory
duke@435:   strcpy(cname, name());
duke@435: 
duke@435: 
duke@435:   // set the header values in PerfData memory
duke@435:   PerfDataEntry* pdep = (PerfDataEntry*)psmp;
duke@435:   pdep->entry_length = (jint)size;
duke@435:   pdep->name_offset = (jint) ((uintptr_t) cname - (uintptr_t) psmp);
duke@435:   pdep->vector_length = (jint)vlen;
duke@435:   pdep->data_type = (jbyte) type2char(dtype);
duke@435:   pdep->data_units = units();
duke@435:   pdep->data_variability = variability();
duke@435:   pdep->flags = (jbyte)flags();
duke@435:   pdep->data_offset = (jint) data_start;
duke@435: 
duke@435:   if (PerfTraceDataCreation) {
duke@435:     tty->print("name = %s, dtype = %d, variability = %d,"
duke@435:                " units = %d, dsize = %d, vlen = %d,"
duke@435:                " pad_length = %d, size = %d, on_c_heap = %s,"
duke@435:                " address = " INTPTR_FORMAT ","
duke@435:                " data address = " INTPTR_FORMAT "\n",
duke@435:                cname, dtype, variability(),
duke@435:                units(), dsize, vlen,
duke@435:                pad_length, size, is_on_c_heap() ? "TRUE":"FALSE",
duke@435:                psmp, valuep);
duke@435:   }
duke@435: 
duke@435:   // record the start of the entry and the location of the data field.
duke@435:   _pdep = pdep;
duke@435:   _valuep = valuep;
duke@435: 
duke@435:   // mark the PerfData memory region as having been updated.
duke@435:   PerfMemory::mark_updated();
duke@435: }
duke@435: 
duke@435: PerfLong::PerfLong(CounterNS ns, const char* namep, Units u, Variability v)
duke@435:                  : PerfData(ns, namep, u, v) {
duke@435: 
duke@435:   create_entry(T_LONG, sizeof(jlong));
duke@435: }
duke@435: 
duke@435: int PerfLong::format(char* buffer, int length) {
hseigel@4465:   return jio_snprintf(buffer, length, JLONG_FORMAT, *(jlong*)_valuep);
duke@435: }
duke@435: 
duke@435: PerfLongVariant::PerfLongVariant(CounterNS ns, const char* namep, Units u,
duke@435:                                  Variability v, jlong* sampled)
duke@435:                                 : PerfLong(ns, namep, u, v),
duke@435:                                   _sampled(sampled), _sample_helper(NULL) {
duke@435: 
duke@435:   sample();
duke@435: }
duke@435: 
duke@435: PerfLongVariant::PerfLongVariant(CounterNS ns, const char* namep, Units u,
duke@435:                                  Variability v, PerfLongSampleHelper* helper)
duke@435:                                 : PerfLong(ns, namep, u, v),
duke@435:                                   _sampled(NULL), _sample_helper(helper) {
duke@435: 
duke@435:   sample();
duke@435: }
duke@435: 
duke@435: void PerfLongVariant::sample() {
duke@435: 
coleenp@4037:   // JJJ - This should not happen.  Maybe the first sample is taken
coleenp@4037:   // while the _sample_helper is being null'ed out.
coleenp@4037:   // assert(_sample_helper != NULL || _sampled != NULL, "unexpected state");
coleenp@4037:   if (_sample_helper == NULL) return;
duke@435: 
duke@435:   if (_sample_helper != NULL) {
duke@435:     *(jlong*)_valuep = _sample_helper->take_sample();
duke@435:   }
duke@435:   else if (_sampled != NULL) {
duke@435:     *(jlong*)_valuep = *_sampled;
duke@435:   }
duke@435: }
duke@435: 
duke@435: PerfByteArray::PerfByteArray(CounterNS ns, const char* namep, Units u,
duke@435:                              Variability v, jint length)
duke@435:                             : PerfData(ns, namep, u, v), _length(length) {
duke@435: 
duke@435:   create_entry(T_BYTE, sizeof(jbyte), (size_t)_length);
duke@435: }
duke@435: 
duke@435: void PerfString::set_string(const char* s2) {
duke@435: 
duke@435:   // copy n bytes of the string, assuring the null string is
duke@435:   // copied if s2 == NULL.
duke@435:   strncpy((char *)_valuep, s2 == NULL ? "" : s2, _length);
duke@435: 
duke@435:   // assure the string is null terminated when strlen(s2) >= _length
duke@435:   ((char*)_valuep)[_length-1] = '\0';
duke@435: }
duke@435: 
duke@435: int PerfString::format(char* buffer, int length) {
duke@435:   return jio_snprintf(buffer, length, "%s", (char*)_valuep);
duke@435: }
duke@435: 
duke@435: PerfStringConstant::PerfStringConstant(CounterNS ns, const char* namep,
duke@435:                                        const char* initial_value)
duke@435:                      : PerfString(ns, namep, V_Constant,
duke@435:                                   initial_value == NULL ? 1 :
duke@435:                                   MIN2((jint)(strlen((char*)initial_value)+1),
duke@435:                                        (jint)(PerfMaxStringConstLength+1)),
duke@435:                                   initial_value) {
duke@435: 
duke@435:   if (PrintMiscellaneous && Verbose) {
duke@435:     if (is_valid() && initial_value != NULL &&
duke@435:         ((jint)strlen(initial_value) > (jint)PerfMaxStringConstLength)) {
duke@435: 
duke@435:       warning("Truncating PerfStringConstant: name = %s,"
duke@435:               " length = " INT32_FORMAT ","
duke@435:               " PerfMaxStringConstLength = " INT32_FORMAT "\n",
duke@435:               namep,
duke@435:               (jint)strlen(initial_value),
duke@435:               (jint)PerfMaxStringConstLength);
duke@435:     }
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: 
duke@435: 
duke@435: 
duke@435: 
duke@435: void PerfDataManager::destroy() {
duke@435: 
duke@435:   if (_all == NULL)
duke@435:     // destroy already called, or initialization never happened
duke@435:     return;
duke@435: 
duke@435:   for (int index = 0; index < _all->length(); index++) {
duke@435:     PerfData* p = _all->at(index);
duke@435:     delete p;
duke@435:   }
duke@435: 
duke@435:   delete(_all);
duke@435:   delete(_sampled);
duke@435:   delete(_constants);
duke@435: 
duke@435:   _all = NULL;
duke@435:   _sampled = NULL;
duke@435:   _constants = NULL;
duke@435: }
duke@435: 
duke@435: void PerfDataManager::add_item(PerfData* p, bool sampled) {
duke@435: 
duke@435:   MutexLocker ml(PerfDataManager_lock);
duke@435: 
duke@435:   if (_all == NULL) {
duke@435:     _all = new PerfDataList(100);
duke@435:   }
duke@435: 
duke@435:   assert(!_all->contains(p->name()), "duplicate name added");
duke@435: 
duke@435:   // add to the list of all perf data items
duke@435:   _all->append(p);
duke@435: 
duke@435:   if (p->variability() == PerfData::V_Constant) {
duke@435:     if (_constants == NULL) {
duke@435:       _constants = new PerfDataList(25);
duke@435:     }
duke@435:     _constants->append(p);
duke@435:     return;
duke@435:   }
duke@435: 
duke@435:   if (sampled) {
duke@435:     if (_sampled == NULL) {
duke@435:       _sampled = new PerfDataList(25);
duke@435:     }
duke@435:     _sampled->append(p);
duke@435:   }
duke@435: }
duke@435: 
sla@5237: PerfData* PerfDataManager::find_by_name(const char* name) {
sla@5237:   return _all->find_by_name(name);
sla@5237: }
sla@5237: 
duke@435: PerfDataList* PerfDataManager::all() {
duke@435: 
duke@435:   MutexLocker ml(PerfDataManager_lock);
duke@435: 
duke@435:   if (_all == NULL)
duke@435:     return NULL;
duke@435: 
duke@435:   PerfDataList* clone = _all->clone();
duke@435:   return clone;
duke@435: }
duke@435: 
duke@435: PerfDataList* PerfDataManager::sampled() {
duke@435: 
duke@435:   MutexLocker ml(PerfDataManager_lock);
duke@435: 
duke@435:   if (_sampled == NULL)
duke@435:     return NULL;
duke@435: 
duke@435:   PerfDataList* clone = _sampled->clone();
duke@435:   return clone;
duke@435: }
duke@435: 
duke@435: PerfDataList* PerfDataManager::constants() {
duke@435: 
duke@435:   MutexLocker ml(PerfDataManager_lock);
duke@435: 
duke@435:   if (_constants == NULL)
duke@435:     return NULL;
duke@435: 
duke@435:   PerfDataList* clone = _constants->clone();
duke@435:   return clone;
duke@435: }
duke@435: 
duke@435: char* PerfDataManager::counter_name(const char* ns, const char* name) {
duke@435:    assert(ns != NULL, "ns string required");
duke@435:    assert(name != NULL, "name string required");
duke@435: 
duke@435:    size_t len = strlen(ns) + strlen(name) + 2;
duke@435:    char* result = NEW_RESOURCE_ARRAY(char, len);
duke@435:    sprintf(result, "%s.%s", ns, name);
duke@435:    return result;
duke@435: }
duke@435: 
duke@435: char* PerfDataManager::name_space(const char* ns, const char* sub,
duke@435:                                   int instance) {
duke@435:    char intbuf[40];
duke@435:    jio_snprintf(intbuf, 40, UINT32_FORMAT, instance);
duke@435:    return name_space(ns, name_space(sub, intbuf));
duke@435: }
duke@435: 
duke@435: char *PerfDataManager::name_space(const char* ns, int instance) {
duke@435:    char intbuf[40];
duke@435:    jio_snprintf(intbuf, 40, UINT32_FORMAT, instance);
duke@435:    return name_space(ns, intbuf);
duke@435: }
duke@435: 
duke@435: PerfStringConstant* PerfDataManager::create_string_constant(CounterNS ns,
duke@435:                                                             const char* name,
duke@435:                                                             const char* s,
duke@435:                                                             TRAPS) {
duke@435: 
duke@435:   PerfStringConstant* p = new PerfStringConstant(ns, name, s);
duke@435: 
duke@435:   if (!p->is_valid()) {
duke@435:     // allocation of native resources failed.
duke@435:     delete p;
duke@435:     THROW_0(vmSymbols::java_lang_OutOfMemoryError());
duke@435:   }
duke@435: 
duke@435:   add_item(p, false);
duke@435: 
duke@435:   return p;
duke@435: }
duke@435: 
duke@435: PerfLongConstant* PerfDataManager::create_long_constant(CounterNS ns,
duke@435:                                                         const char* name,
duke@435:                                                         PerfData::Units u,
duke@435:                                                         jlong val, TRAPS) {
duke@435: 
duke@435:   PerfLongConstant* p = new PerfLongConstant(ns, name, u, val);
duke@435: 
duke@435:   if (!p->is_valid()) {
duke@435:     // allocation of native resources failed.
duke@435:     delete p;
duke@435:     THROW_0(vmSymbols::java_lang_OutOfMemoryError());
duke@435:   }
duke@435: 
duke@435:   add_item(p, false);
duke@435: 
duke@435:   return p;
duke@435: }
duke@435: 
duke@435: PerfStringVariable* PerfDataManager::create_string_variable(CounterNS ns,
duke@435:                                                             const char* name,
duke@435:                                                             jint max_length,
duke@435:                                                             const char* s,
duke@435:                                                             TRAPS) {
duke@435: 
duke@435:   if (max_length == 0 && s != NULL) max_length = (jint)strlen(s);
duke@435: 
duke@435:   assert(max_length != 0, "PerfStringVariable with length 0");
duke@435: 
duke@435:   PerfStringVariable* p = new PerfStringVariable(ns, name, max_length, s);
duke@435: 
duke@435:   if (!p->is_valid()) {
duke@435:     // allocation of native resources failed.
duke@435:     delete p;
duke@435:     THROW_0(vmSymbols::java_lang_OutOfMemoryError());
duke@435:   }
duke@435: 
duke@435:   add_item(p, false);
duke@435: 
duke@435:   return p;
duke@435: }
duke@435: 
duke@435: PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns,
duke@435:                                                         const char* name,
duke@435:                                                         PerfData::Units u,
duke@435:                                                         jlong ival, TRAPS) {
duke@435: 
duke@435:   PerfLongVariable* p = new PerfLongVariable(ns, name, u, ival);
duke@435: 
duke@435:   if (!p->is_valid()) {
duke@435:     // allocation of native resources failed.
duke@435:     delete p;
duke@435:     THROW_0(vmSymbols::java_lang_OutOfMemoryError());
duke@435:   }
duke@435: 
duke@435:   add_item(p, false);
duke@435: 
duke@435:   return p;
duke@435: }
duke@435: 
duke@435: PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns,
duke@435:                                                         const char* name,
duke@435:                                                         PerfData::Units u,
duke@435:                                                         jlong* sp, TRAPS) {
duke@435: 
duke@435:   // Sampled counters not supported if UsePerfData is false
duke@435:   if (!UsePerfData) return NULL;
duke@435: 
duke@435:   PerfLongVariable* p = new PerfLongVariable(ns, name, u, sp);
duke@435: 
duke@435:   if (!p->is_valid()) {
duke@435:     // allocation of native resources failed.
duke@435:     delete p;
duke@435:     THROW_0(vmSymbols::java_lang_OutOfMemoryError());
duke@435:   }
duke@435: 
duke@435:   add_item(p, true);
duke@435: 
duke@435:   return p;
duke@435: }
duke@435: 
duke@435: PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns,
duke@435:                                                         const char* name,
duke@435:                                                         PerfData::Units u,
duke@435:                                                         PerfSampleHelper* sh,
duke@435:                                                         TRAPS) {
duke@435: 
duke@435:   // Sampled counters not supported if UsePerfData is false
duke@435:   if (!UsePerfData) return NULL;
duke@435: 
duke@435:   PerfLongVariable* p = new PerfLongVariable(ns, name, u, sh);
duke@435: 
duke@435:   if (!p->is_valid()) {
duke@435:     // allocation of native resources failed.
duke@435:     delete p;
duke@435:     THROW_0(vmSymbols::java_lang_OutOfMemoryError());
duke@435:   }
duke@435: 
duke@435:   add_item(p, true);
duke@435: 
duke@435:   return p;
duke@435: }
duke@435: 
duke@435: PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns,
duke@435:                                                       const char* name,
duke@435:                                                       PerfData::Units u,
duke@435:                                                       jlong ival, TRAPS) {
duke@435: 
duke@435:   PerfLongCounter* p = new PerfLongCounter(ns, name, u, ival);
duke@435: 
duke@435:   if (!p->is_valid()) {
duke@435:     // allocation of native resources failed.
duke@435:     delete p;
duke@435:     THROW_0(vmSymbols::java_lang_OutOfMemoryError());
duke@435:   }
duke@435: 
duke@435:   add_item(p, false);
duke@435: 
duke@435:   return p;
duke@435: }
duke@435: 
duke@435: PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns,
duke@435:                                                       const char* name,
duke@435:                                                       PerfData::Units u,
duke@435:                                                       jlong* sp, TRAPS) {
duke@435: 
duke@435:   // Sampled counters not supported if UsePerfData is false
duke@435:   if (!UsePerfData) return NULL;
duke@435: 
duke@435:   PerfLongCounter* p = new PerfLongCounter(ns, name, u, sp);
duke@435: 
duke@435:   if (!p->is_valid()) {
duke@435:     // allocation of native resources failed.
duke@435:     delete p;
duke@435:     THROW_0(vmSymbols::java_lang_OutOfMemoryError());
duke@435:   }
duke@435: 
duke@435:   add_item(p, true);
duke@435: 
duke@435:   return p;
duke@435: }
duke@435: 
duke@435: PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns,
duke@435:                                                       const char* name,
duke@435:                                                       PerfData::Units u,
duke@435:                                                       PerfSampleHelper* sh,
duke@435:                                                       TRAPS) {
duke@435: 
duke@435:   // Sampled counters not supported if UsePerfData is false
duke@435:   if (!UsePerfData) return NULL;
duke@435: 
duke@435:   PerfLongCounter* p = new PerfLongCounter(ns, name, u, sh);
duke@435: 
duke@435:   if (!p->is_valid()) {
duke@435:     // allocation of native resources failed.
duke@435:     delete p;
duke@435:     THROW_0(vmSymbols::java_lang_OutOfMemoryError());
duke@435:   }
duke@435: 
duke@435:   add_item(p, true);
duke@435: 
duke@435:   return p;
duke@435: }
duke@435: 
duke@435: PerfDataList::PerfDataList(int length) {
duke@435: 
zgu@3900:   _set = new(ResourceObj::C_HEAP, mtInternal) PerfDataArray(length, true);
duke@435: }
duke@435: 
duke@435: PerfDataList::PerfDataList(PerfDataList* p) {
duke@435: 
zgu@3900:   _set = new(ResourceObj::C_HEAP, mtInternal) PerfDataArray(p->length(), true);
duke@435: 
duke@435:   _set->appendAll(p->get_impl());
duke@435: }
duke@435: 
duke@435: PerfDataList::~PerfDataList() {
duke@435: 
duke@435:   delete _set;
duke@435: 
duke@435: }
duke@435: 
duke@435: bool PerfDataList::by_name(void* name, PerfData* pd) {
duke@435: 
duke@435:   if (pd == NULL)
duke@435:     return false;
duke@435: 
duke@435:   return strcmp((const char*)name, pd->name()) == 0;
duke@435: }
duke@435: 
duke@435: PerfData* PerfDataList::find_by_name(const char* name) {
duke@435: 
jprovino@4165:   // if add_item hasn't been called the list won't be initialized
jprovino@4165:   if (this == NULL)
jprovino@4165:     return NULL;
jprovino@4165: 
duke@435:   int i = _set->find((void*)name, PerfDataList::by_name);
duke@435: 
duke@435:   if (i >= 0 && i <= _set->length())
duke@435:     return _set->at(i);
duke@435:   else
duke@435:     return NULL;
duke@435: }
duke@435: 
duke@435: PerfDataList* PerfDataList::clone() {
duke@435: 
duke@435:   PerfDataList* copy = new PerfDataList(this);
duke@435: 
duke@435:   assert(copy != NULL, "just checking");
duke@435: 
duke@435:   return copy;
duke@435: }