--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/cpu/sparc/vm_version_ext_sparc.cpp Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,185 @@
+/*
+ * Copyright (c) 2013, 2018, 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 "jvm.h"
+#include "memory/allocation.hpp"
+#include "memory/allocation.inline.hpp"
+#include "vm_version_ext_sparc.hpp"
+
+// VM_Version_Ext statics
+int VM_Version_Ext::_no_of_threads = 0;
+int VM_Version_Ext::_no_of_cores = 0;
+int VM_Version_Ext::_no_of_sockets = 0;
+kid_t VM_Version_Ext::_kcid = -1;
+char VM_Version_Ext::_cpu_name[CPU_TYPE_DESC_BUF_SIZE] = {0};
+char VM_Version_Ext::_cpu_desc[CPU_DETAILED_DESC_BUF_SIZE] = {0};
+
+// get cpu information. It takes into account if the kstat chain id
+// has been changed and update the info if necessary.
+bool VM_Version_Ext::initialize_cpu_information(void) {
+
+ int core_id = -1;
+ int chip_id = -1;
+ int len = 0;
+ char* src_string = NULL;
+ kstat_ctl_t* kc = kstat_open();
+ if (!kc) {
+ return false;
+ }
+
+ // check if kstat chain has been updated
+ kid_t kcid = kstat_chain_update(kc);
+ if (kcid == -1) {
+ kstat_close(kc);
+ return false;
+ }
+
+ bool updated = ((kcid > 0) && (kcid != _kcid)) ||
+ ((kcid == 0) && (_kcid == -1));
+ if (!updated) {
+ kstat_close(kc);
+ return true;
+ }
+
+ // update the cached _kcid
+ _kcid = kcid;
+
+ // find the number of online processors
+ // for modern processsors, it is also known as the
+ // hardware threads.
+ _no_of_threads = sysconf(_SC_NPROCESSORS_ONLN);
+
+ if (_no_of_threads <= 0 ) {
+ kstat_close(kc);
+ return false;
+ }
+
+ _no_of_cores = 0;
+ _no_of_sockets = 0;
+
+ // loop through the kstat chain
+ kstat_t* ksp = NULL;
+ for (ksp = kc->kc_chain; ksp != NULL; ksp = ksp->ks_next) {
+ // only interested in "cpu_info"
+ if (strcmp(ksp->ks_module, (char*)CPU_INFO) == 0) {
+ if (kstat_read(kc, ksp, NULL) == -1) {
+ kstat_close(kc);
+ return false;
+ }
+ if (ksp->ks_data != NULL) {
+ kstat_named_t* knm = (kstat_named_t *)ksp->ks_data;
+ // loop through the number of fields in each record
+ for (int i = 0; i < ksp->ks_ndata; i++) {
+ // set cpu type if it hasn't been already set
+ if ((strcmp((const char*)&(knm[i].name), CPU_TYPE) == 0) &&
+ (_cpu_name[0] == '\0')) {
+ if (knm[i].data_type == KSTAT_DATA_STRING) {
+ src_string = (char*)KSTAT_NAMED_STR_PTR(&knm[i]);
+ } else {
+ src_string = (char*)&(knm[i].value.c[0]);
+ }
+ len = strlen(src_string);
+ if (len < CPU_TYPE_DESC_BUF_SIZE) {
+ jio_snprintf(_cpu_name, CPU_TYPE_DESC_BUF_SIZE,
+ "%s", src_string);
+ }
+ }
+
+ // set cpu description if it hasn't been already set
+ if ((strcmp((const char*)&(knm[i].name), CPU_DESCRIPTION) == 0) &&
+ (_cpu_desc[0] == '\0')) {
+ if (knm[i].data_type == KSTAT_DATA_STRING) {
+ src_string = (char*)KSTAT_NAMED_STR_PTR(&knm[i]);
+ } else {
+ src_string = (char*)&(knm[i].value.c[0]);
+ }
+ len = strlen(src_string);
+ if (len < CPU_DETAILED_DESC_BUF_SIZE) {
+ jio_snprintf(_cpu_desc, CPU_DETAILED_DESC_BUF_SIZE,
+ "%s", src_string);
+ }
+ }
+
+ // count the number of sockets based on the chip id
+ if (strcmp((const char*)&(knm[i].name), CHIP_ID) == 0) {
+ if (chip_id != knm[i].value.l) {
+ chip_id = knm[i].value.l;
+ _no_of_sockets++;
+ }
+ }
+
+ // count the number of cores based on the core id
+ if (strcmp((const char*)&(knm[i].name), CORE_ID) == 0) {
+ if (core_id != knm[i].value.l) {
+ core_id = knm[i].value.l;
+ _no_of_cores++;
+ }
+ }
+ }
+ }
+ }
+ }
+
+ kstat_close(kc);
+ return true;
+}
+
+int VM_Version_Ext::number_of_threads(void) {
+ initialize_cpu_information();
+ return _no_of_threads;
+}
+
+int VM_Version_Ext::number_of_cores(void) {
+ initialize_cpu_information();
+ return _no_of_cores;
+}
+
+int VM_Version_Ext::number_of_sockets(void) {
+ initialize_cpu_information();
+ return _no_of_sockets;
+}
+
+const char* VM_Version_Ext::cpu_name(void) {
+ if (!initialize_cpu_information()) {
+ return NULL;
+ }
+ char* tmp = NEW_C_HEAP_ARRAY_RETURN_NULL(char, CPU_TYPE_DESC_BUF_SIZE, mtTracing);
+ if (NULL == tmp) {
+ return NULL;
+ }
+ strncpy(tmp, _cpu_name, CPU_TYPE_DESC_BUF_SIZE);
+ return tmp;
+}
+
+const char* VM_Version_Ext::cpu_description(void) {
+ if (!initialize_cpu_information()) {
+ return NULL;
+ }
+ char* tmp = NEW_C_HEAP_ARRAY_RETURN_NULL(char, CPU_DETAILED_DESC_BUF_SIZE, mtTracing);
+ if (NULL == tmp) {
+ return NULL;
+ }
+ strncpy(tmp, _cpu_desc, CPU_DETAILED_DESC_BUF_SIZE);
+ return tmp;
+}