--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/os/aix/libperfstat_aix.cpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,353 @@
+/*
+ * Copyright (c) 2012, 2016 SAP SE. 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 "libperfstat_aix.hpp"
+#include "misc_aix.hpp"
+
+#include <dlfcn.h>
+#include <sys/systemcfg.h>
+
+// Handle to the libperfstat.
+static void* g_libhandle = NULL;
+
+typedef int (*fun_perfstat_cpu_total_t) (perfstat_id_t *name, PERFSTAT_CPU_TOTAL_T_LATEST* userbuff,
+                                         int sizeof_userbuff, int desired_number);
+
+typedef int (*fun_perfstat_memory_total_t) (perfstat_id_t *name, perfstat_memory_total_t* userbuff,
+                                            int sizeof_userbuff, int desired_number);
+
+typedef int (*fun_perfstat_partition_total_t) (perfstat_id_t *name,
+    PERFSTAT_PARTITON_TOTAL_T_LATEST* userbuff, int sizeof_userbuff,
+    int desired_number);
+
+typedef int (*fun_perfstat_wpar_total_t) (perfstat_id_wpar_t *name,
+    PERFSTAT_WPAR_TOTAL_T_LATEST* userbuff, int sizeof_userbuff,
+    int desired_number);
+
+typedef void (*fun_perfstat_reset_t) ();
+
+typedef cid_t (*fun_wpar_getcid_t) ();
+
+static fun_perfstat_cpu_total_t     g_fun_perfstat_cpu_total = NULL;
+static fun_perfstat_memory_total_t  g_fun_perfstat_memory_total = NULL;
+static fun_perfstat_partition_total_t g_fun_perfstat_partition_total = NULL;
+static fun_perfstat_wpar_total_t    g_fun_perfstat_wpar_total = NULL;
+static fun_perfstat_reset_t         g_fun_perfstat_reset = NULL;
+static fun_wpar_getcid_t            g_fun_wpar_getcid = NULL;
+
+bool libperfstat::init() {
+
+  // Dynamically load the libperfstat porting library.
+  g_libhandle = dlopen("/usr/lib/libperfstat.a(shr_64.o)", RTLD_MEMBER | RTLD_NOW);
+  if (!g_libhandle) {
+    trcVerbose("Cannot load libperfstat.a (dlerror: %s)", dlerror());
+    return false;
+  }
+
+  // Resolve function pointers
+
+#define RESOLVE_FUN_NO_ERROR(name) \
+  g_fun_##name = (fun_##name##_t) dlsym(g_libhandle, #name);
+
+#define RESOLVE_FUN(name) \
+  RESOLVE_FUN_NO_ERROR(name) \
+  if (!g_fun_##name) { \
+    trcVerbose("Cannot resolve " #name "() from libperfstat.a\n" \
+                      "   (dlerror: %s)", dlerror()); \
+    return false; \
+  }
+
+  // These functions may or may not be there depending on the OS release.
+  RESOLVE_FUN_NO_ERROR(perfstat_partition_total);
+  RESOLVE_FUN_NO_ERROR(perfstat_wpar_total);
+  RESOLVE_FUN_NO_ERROR(wpar_getcid);
+
+  // These functions are required for every release.
+  RESOLVE_FUN(perfstat_cpu_total);
+  RESOLVE_FUN(perfstat_memory_total);
+  RESOLVE_FUN(perfstat_reset);
+
+  trcVerbose("libperfstat loaded.");
+
+  return true;
+}
+
+void libperfstat::cleanup() {
+
+  if (g_libhandle) {
+    dlclose(g_libhandle);
+    g_libhandle = NULL;
+  }
+
+  g_fun_perfstat_cpu_total = NULL;
+  g_fun_perfstat_memory_total = NULL;
+  g_fun_perfstat_partition_total = NULL;
+  g_fun_perfstat_wpar_total = NULL;
+  g_fun_perfstat_reset = NULL;
+  g_fun_wpar_getcid = NULL;
+
+}
+
+int libperfstat::perfstat_memory_total(perfstat_id_t *name,
+                                       perfstat_memory_total_t* userbuff,
+                                       int sizeof_userbuff, int desired_number) {
+  if (g_fun_perfstat_memory_total == NULL) {
+    return -1;
+  }
+  return g_fun_perfstat_memory_total(name, userbuff, sizeof_userbuff, desired_number);
+}
+
+int libperfstat::perfstat_cpu_total(perfstat_id_t *name, PERFSTAT_CPU_TOTAL_T_LATEST* userbuff,
+                                    int sizeof_userbuff, int desired_number) {
+  if (g_fun_perfstat_cpu_total == NULL) {
+    return -1;
+  }
+  return g_fun_perfstat_cpu_total(name, userbuff, sizeof_userbuff, desired_number);
+}
+
+int libperfstat::perfstat_partition_total(perfstat_id_t *name, PERFSTAT_PARTITON_TOTAL_T_LATEST* userbuff,
+                                          int sizeof_userbuff, int desired_number) {
+  if (g_fun_perfstat_partition_total == NULL) {
+    return -1;
+  }
+  return g_fun_perfstat_partition_total(name, userbuff, sizeof_userbuff, desired_number);
+}
+
+int libperfstat::perfstat_wpar_total(perfstat_id_wpar_t *name, PERFSTAT_WPAR_TOTAL_T_LATEST* userbuff,
+                                     int sizeof_userbuff, int desired_number) {
+  if (g_fun_perfstat_wpar_total == NULL) {
+    return -1;
+  }
+  return g_fun_perfstat_wpar_total(name, userbuff, sizeof_userbuff, desired_number);
+}
+
+void libperfstat::perfstat_reset() {
+  if (g_fun_perfstat_reset != NULL) {
+    g_fun_perfstat_reset();
+  }
+}
+
+cid_t libperfstat::wpar_getcid() {
+  if (g_fun_wpar_getcid == NULL) {
+    return (cid_t) -1;
+  }
+  return g_fun_wpar_getcid();
+}
+
+
+//////////////////// convenience functions, release-independent /////////////////////////////
+
+// Excerpts from systemcfg.h definitions newer than AIX 5.3 (our oldest build platform)
+
+#define PV_6 0x100000          /* Power PC 6 */
+#define PV_6_1 0x100001        /* Power PC 6 DD1.x */
+#define PV_7 0x200000          /* Power PC 7 */
+#define PV_5_Compat 0x0F8000   /* Power PC 5 */
+#define PV_6_Compat 0x108000   /* Power PC 6 */
+#define PV_7_Compat 0x208000   /* Power PC 7 */
+#define PV_8 0x300000          /* Power PC 8 */
+#define PV_8_Compat 0x308000   /* Power PC 8 */
+
+
+// Retrieve global cpu information.
+bool libperfstat::get_cpuinfo(cpuinfo_t* pci) {
+
+  assert(pci, "get_cpuinfo: invalid parameter");
+  memset(pci, 0, sizeof(cpuinfo_t));
+
+  PERFSTAT_CPU_TOTAL_T_LATEST psct;
+  memset (&psct, '\0', sizeof(psct));
+
+  if (-1 == libperfstat::perfstat_cpu_total(NULL, &psct, sizeof(PERFSTAT_CPU_TOTAL_T_LATEST), 1)) {
+    if (-1 == libperfstat::perfstat_cpu_total(NULL, &psct, sizeof(perfstat_cpu_total_t_71), 1)) {
+      if (-1 == libperfstat::perfstat_cpu_total(NULL, &psct, sizeof(perfstat_cpu_total_t_61), 1)) {
+        if (-1 == libperfstat::perfstat_cpu_total(NULL, &psct, sizeof(perfstat_cpu_total_t_53), 1)) {
+          trcVerbose("perfstat_cpu_total() failed (errno=%d)", errno);
+          return false;
+        }
+      }
+    }
+  }
+
+  // Global cpu information.
+  strcpy (pci->description, psct.description);
+  pci->processorHZ = psct.processorHZ;
+  pci->ncpus = psct.ncpus;
+  for (int i = 0; i < 3; i++) {
+    pci->loadavg[i] = (double) psct.loadavg[i] / (1 << SBITS);
+  }
+
+  pci->user_clock_ticks = psct.user;
+  pci->sys_clock_ticks  = psct.sys;
+  pci->idle_clock_ticks = psct.idle;
+  pci->wait_clock_ticks = psct.wait;
+
+  // Get the processor version from _system_configuration.
+  switch (_system_configuration.version) {
+  case PV_8:
+    strcpy(pci->version, "Power PC 8");
+    break;
+  case PV_7:
+    strcpy(pci->version, "Power PC 7");
+    break;
+  case PV_6_1:
+    strcpy(pci->version, "Power PC 6 DD1.x");
+    break;
+  case PV_6:
+    strcpy(pci->version, "Power PC 6");
+    break;
+  case PV_5:
+    strcpy(pci->version, "Power PC 5");
+    break;
+  case PV_5_2:
+    strcpy(pci->version, "Power PC 5_2");
+    break;
+  case PV_5_3:
+    strcpy(pci->version, "Power PC 5_3");
+    break;
+  case PV_5_Compat:
+    strcpy(pci->version, "PV_5_Compat");
+    break;
+  case PV_6_Compat:
+    strcpy(pci->version, "PV_6_Compat");
+    break;
+  case PV_7_Compat:
+    strcpy(pci->version, "PV_7_Compat");
+    break;
+  case PV_8_Compat:
+    strcpy(pci->version, "PV_8_Compat");
+    break;
+  default:
+    strcpy(pci->version, "unknown");
+  }
+
+  return true;
+}
+
+// Retrieve partition information.
+bool libperfstat::get_partitioninfo(partitioninfo_t* ppi) {
+
+  assert(ppi, "get_partitioninfo: invalid parameter");
+  memset(ppi, 0, sizeof(partitioninfo_t));
+
+  PERFSTAT_PARTITON_TOTAL_T_LATEST pspt;
+  memset(&pspt, '\0', sizeof(pspt));
+
+  bool ame_details = true;
+
+  if (-1 == libperfstat::perfstat_partition_total(NULL, &pspt, sizeof(PERFSTAT_PARTITON_TOTAL_T_LATEST), 1)) {
+    if (-1 == libperfstat::perfstat_partition_total(NULL, &pspt, sizeof(perfstat_partition_total_t_71), 1)) {
+      ame_details = false;
+      if (-1 == libperfstat::perfstat_partition_total(NULL, &pspt, sizeof(perfstat_partition_total_t_61), 1)) {
+        if (-1 == libperfstat::perfstat_partition_total(NULL, &pspt, sizeof(perfstat_partition_total_t_53), 1)) {
+          if (-1 == libperfstat::perfstat_partition_total(NULL, &pspt, sizeof(perfstat_partition_total_t_53_5), 1)) {
+            trcVerbose("perfstat_partition_total() failed (errno=%d)", errno);
+            return false;
+          }
+        }
+      }
+    }
+  }
+
+  // partition type info
+  ppi->shared_enabled = pspt.type.b.shared_enabled;
+  ppi->smt_capable = pspt.type.b.smt_capable;
+  ppi->smt_enabled = pspt.type.b.smt_enabled;
+  ppi->lpar_capable = pspt.type.b.lpar_capable;
+  ppi->lpar_enabled = pspt.type.b.lpar_enabled;
+  ppi->dlpar_capable = pspt.type.b.dlpar_capable;
+  ppi->capped = pspt.type.b.capped;
+  ppi->kernel_is_64 = pspt.type.b.kernel_is_64;
+  ppi->pool_util_authority = pspt.type.b.pool_util_authority;
+  ppi->donate_capable = pspt.type.b.donate_capable;
+  ppi->donate_enabled = pspt.type.b.donate_enabled;
+  ppi->ams_capable = pspt.type.b.ams_capable;
+  ppi->ams_enabled = pspt.type.b.ams_enabled;
+  ppi->power_save = pspt.type.b.power_save;
+  ppi->ame_enabled = pspt.type.b.ame_enabled;
+
+  // partition total info
+  ppi->online_cpus = pspt.online_cpus;
+  ppi->entitled_proc_capacity = pspt.entitled_proc_capacity;
+  ppi->var_proc_capacity_weight = pspt.var_proc_capacity_weight;
+  ppi->phys_cpus_pool = pspt.phys_cpus_pool;
+  ppi->pool_id = pspt.pool_id;
+  ppi->entitled_pool_capacity = pspt.entitled_pool_capacity;
+  strcpy(ppi->name, pspt.name);
+
+  // Added values to ppi that we need for later computation of cpu utilization
+  // ( pool authorization needed for pool_idle_time ??? )
+  ppi->timebase_last   = pspt.timebase_last;
+  ppi->pool_idle_time  = pspt.pool_idle_time;
+  ppi->pcpu_tics_user  = pspt.puser;
+  ppi->pcpu_tics_sys   = pspt.psys;
+  ppi->pcpu_tics_idle  = pspt.pidle;
+  ppi->pcpu_tics_wait  = pspt.pwait;
+
+  // Additional AME information.
+  if (ame_details) {
+    ppi->true_memory = pspt.true_memory * 4096;
+    ppi->expanded_memory = pspt.expanded_memory * 4096;
+    ppi->target_memexp_factr = pspt.target_memexp_factr;
+    ppi->current_memexp_factr = pspt.current_memexp_factr;
+    ppi->cmcs_total_time = pspt.cmcs_total_time;
+  }
+
+  return true;
+}
+
+// Retrieve wpar information.
+bool libperfstat::get_wparinfo(wparinfo_t* pwi) {
+
+  assert(pwi, "get_wparinfo: invalid parameter");
+  memset(pwi, 0, sizeof(wparinfo_t));
+
+  if (libperfstat::wpar_getcid() <= 0) {
+    return false;
+  }
+
+  PERFSTAT_WPAR_TOTAL_T_LATEST pswt;
+  memset (&pswt, '\0', sizeof(pswt));
+
+  if (-1 == libperfstat::perfstat_wpar_total(NULL, &pswt, sizeof(PERFSTAT_WPAR_TOTAL_T_LATEST), 1)) {
+    if (-1 == libperfstat::perfstat_wpar_total(NULL, &pswt, sizeof(perfstat_wpar_total_t_61), 1)) {
+      trcVerbose("perfstat_wpar_total() failed (errno=%d)", errno);
+      return false;
+    }
+  }
+
+  // WPAR type info.
+  pwi->app_wpar = pswt.type.b.app_wpar;
+  pwi->cpu_rset = pswt.type.b.cpu_rset;
+  pwi->cpu_xrset = pswt.type.b.cpu_xrset;
+  pwi->cpu_limits = pswt.type.b.cpu_limits;
+  pwi->mem_limits = pswt.type.b.mem_limits;
+  // WPAR total info.
+  strcpy(pwi->name, pswt.name);
+  pwi->wpar_id = pswt.wpar_id;
+  pwi->cpu_limit = pswt.cpu_limit;
+  pwi->mem_limit = pswt.mem_limit;
+
+  return true;
+}