1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/os/aix/vm/libperfstat_aix.cpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,124 @@
1.4 +/*
1.5 + * Copyright 2012, 2013 SAP AG. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#include "runtime/arguments.hpp"
1.29 +#include "libperfstat_aix.hpp"
1.30 +
1.31 +// For dlopen and friends
1.32 +#include <fcntl.h>
1.33 +
1.34 +// handle to the libperfstat
1.35 +static void* g_libhandle = NULL;
1.36 +
1.37 +// whether initialization worked
1.38 +static bool g_initialized = false;
1.39 +
1.40 +
1.41 +typedef int (*fun_perfstat_cpu_total_t) (perfstat_id_t *name, perfstat_cpu_total_t* userbuff,
1.42 + int sizeof_userbuff, int desired_number);
1.43 +
1.44 +typedef int (*fun_perfstat_memory_total_t) (perfstat_id_t *name, perfstat_memory_total_t* userbuff,
1.45 + int sizeof_userbuff, int desired_number);
1.46 +
1.47 +typedef void (*fun_perfstat_reset_t) ();
1.48 +
1.49 +static fun_perfstat_cpu_total_t g_fun_perfstat_cpu_total = NULL;
1.50 +static fun_perfstat_memory_total_t g_fun_perfstat_memory_total = NULL;
1.51 +static fun_perfstat_reset_t g_fun_perfstat_reset = NULL;
1.52 +
1.53 +bool libperfstat::init() {
1.54 +
1.55 + if (g_initialized) {
1.56 + return true;
1.57 + }
1.58 +
1.59 + g_initialized = false;
1.60 +
1.61 + // dynamically load the libperfstat porting library.
1.62 + g_libhandle = dlopen("/usr/lib/libperfstat.a(shr_64.o)", RTLD_MEMBER | RTLD_NOW);
1.63 + if (!g_libhandle) {
1.64 + if (Verbose) {
1.65 + fprintf(stderr, "Cannot load libperfstat.a (dlerror: %s)", dlerror());
1.66 + }
1.67 + return false;
1.68 + }
1.69 +
1.70 + // resolve function pointers
1.71 +
1.72 +#define RESOLVE_FUN_NO_ERROR(name) \
1.73 + g_fun_##name = (fun_##name##_t) dlsym(g_libhandle, #name);
1.74 +
1.75 +#define RESOLVE_FUN(name) \
1.76 + RESOLVE_FUN_NO_ERROR(name) \
1.77 + if (!g_fun_##name) { \
1.78 + if (Verbose) { \
1.79 + fprintf(stderr, "Cannot resolve " #name "() from libperfstat.a\n" \
1.80 + " (dlerror: %s)", dlerror()); \
1.81 + } \
1.82 + return false; \
1.83 + }
1.84 +
1.85 + RESOLVE_FUN(perfstat_cpu_total);
1.86 + RESOLVE_FUN(perfstat_memory_total);
1.87 + RESOLVE_FUN(perfstat_reset);
1.88 +
1.89 + g_initialized = true;
1.90 +
1.91 + return true;
1.92 +}
1.93 +
1.94 +void libperfstat::cleanup() {
1.95 +
1.96 + g_initialized = false;
1.97 +
1.98 + if (g_libhandle) {
1.99 + dlclose(g_libhandle);
1.100 + g_libhandle = NULL;
1.101 + }
1.102 +
1.103 + g_fun_perfstat_cpu_total = NULL;
1.104 + g_fun_perfstat_memory_total = NULL;
1.105 + g_fun_perfstat_reset = NULL;
1.106 +}
1.107 +
1.108 +int libperfstat::perfstat_memory_total(perfstat_id_t *name,
1.109 + perfstat_memory_total_t* userbuff,
1.110 + int sizeof_userbuff, int desired_number) {
1.111 + assert(g_initialized, "libperfstat not initialized");
1.112 + assert(g_fun_perfstat_memory_total, "");
1.113 + return g_fun_perfstat_memory_total(name, userbuff, sizeof_userbuff, desired_number);
1.114 +}
1.115 +
1.116 +int libperfstat::perfstat_cpu_total(perfstat_id_t *name, perfstat_cpu_total_t* userbuff,
1.117 + int sizeof_userbuff, int desired_number) {
1.118 + assert(g_initialized, "libperfstat not initialized");
1.119 + assert(g_fun_perfstat_cpu_total, "");
1.120 + return g_fun_perfstat_cpu_total(name, userbuff, sizeof_userbuff, desired_number);
1.121 +}
1.122 +
1.123 +void libperfstat::perfstat_reset() {
1.124 + assert(g_initialized, "libperfstat not initialized");
1.125 + assert(g_fun_perfstat_reset, "");
1.126 + g_fun_perfstat_reset();
1.127 +}
