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src/os/aix/vm/libperfstat_aix.cpp@427b2fb1944f (annotated)

src/os/aix/vm/libperfstat_aix.cpp

Wed, 31 Jan 2018 19:24:57 -0500

author

dbuck

date

Wed, 31 Jan 2018 19:24:57 -0500

changeset 9289

427b2fb1944f

parent 0

f90c822e73f8

permissions

-rw-r--r--

8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
Reviewed-by: dcubed

aoqi@0	1	/*
aoqi@0	2	* Copyright 2012, 2013 SAP AG. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#include "runtime/arguments.hpp"
aoqi@0	26	#include "libperfstat_aix.hpp"
aoqi@0	27
aoqi@0	28	// For dlopen and friends
aoqi@0	29	#include <fcntl.h>
aoqi@0	30
aoqi@0	31	// handle to the libperfstat
aoqi@0	32	static void* g_libhandle = NULL;
aoqi@0	33
aoqi@0	34	// whether initialization worked
aoqi@0	35	static bool g_initialized = false;
aoqi@0	36
aoqi@0	37
aoqi@0	38	typedef int (*fun_perfstat_cpu_total_t) (perfstat_id_t *name, perfstat_cpu_total_t* userbuff,
aoqi@0	39	int sizeof_userbuff, int desired_number);
aoqi@0	40
aoqi@0	41	typedef int (*fun_perfstat_memory_total_t) (perfstat_id_t *name, perfstat_memory_total_t* userbuff,
aoqi@0	42	int sizeof_userbuff, int desired_number);
aoqi@0	43
aoqi@0	44	typedef void (*fun_perfstat_reset_t) ();
aoqi@0	45
aoqi@0	46	static fun_perfstat_cpu_total_t g_fun_perfstat_cpu_total = NULL;
aoqi@0	47	static fun_perfstat_memory_total_t g_fun_perfstat_memory_total = NULL;
aoqi@0	48	static fun_perfstat_reset_t g_fun_perfstat_reset = NULL;
aoqi@0	49
aoqi@0	50	bool libperfstat::init() {
aoqi@0	51
aoqi@0	52	if (g_initialized) {
aoqi@0	53	return true;
aoqi@0	54	}
aoqi@0	55
aoqi@0	56	g_initialized = false;
aoqi@0	57
aoqi@0	58	// dynamically load the libperfstat porting library.
aoqi@0	59	g_libhandle = dlopen("/usr/lib/libperfstat.a(shr_64.o)", RTLD_MEMBER | RTLD_NOW);
aoqi@0	60	if (!g_libhandle) {
aoqi@0	61	if (Verbose) {
aoqi@0	62	fprintf(stderr, "Cannot load libperfstat.a (dlerror: %s)", dlerror());
aoqi@0	63	}
aoqi@0	64	return false;
aoqi@0	65	}
aoqi@0	66
aoqi@0	67	// resolve function pointers
aoqi@0	68
aoqi@0	69	#define RESOLVE_FUN_NO_ERROR(name) \
aoqi@0	70	g_fun_##name = (fun_##name##_t) dlsym(g_libhandle, #name);
aoqi@0	71
aoqi@0	72	#define RESOLVE_FUN(name) \
aoqi@0	73	RESOLVE_FUN_NO_ERROR(name) \
aoqi@0	74	if (!g_fun_##name) { \
aoqi@0	75	if (Verbose) { \
aoqi@0	76	fprintf(stderr, "Cannot resolve " #name "() from libperfstat.a\n" \
aoqi@0	77	" (dlerror: %s)", dlerror()); \
aoqi@0	78	} \
aoqi@0	79	return false; \
aoqi@0	80	}
aoqi@0	81
aoqi@0	82	RESOLVE_FUN(perfstat_cpu_total);
aoqi@0	83	RESOLVE_FUN(perfstat_memory_total);
aoqi@0	84	RESOLVE_FUN(perfstat_reset);
aoqi@0	85
aoqi@0	86	g_initialized = true;
aoqi@0	87
aoqi@0	88	return true;
aoqi@0	89	}
aoqi@0	90
aoqi@0	91	void libperfstat::cleanup() {
aoqi@0	92
aoqi@0	93	g_initialized = false;
aoqi@0	94
aoqi@0	95	if (g_libhandle) {
aoqi@0	96	dlclose(g_libhandle);
aoqi@0	97	g_libhandle = NULL;
aoqi@0	98	}
aoqi@0	99
aoqi@0	100	g_fun_perfstat_cpu_total = NULL;
aoqi@0	101	g_fun_perfstat_memory_total = NULL;
aoqi@0	102	g_fun_perfstat_reset = NULL;
aoqi@0	103	}
aoqi@0	104
aoqi@0	105	int libperfstat::perfstat_memory_total(perfstat_id_t *name,
aoqi@0	106	perfstat_memory_total_t* userbuff,
aoqi@0	107	int sizeof_userbuff, int desired_number) {
aoqi@0	108	assert(g_initialized, "libperfstat not initialized");
aoqi@0	109	assert(g_fun_perfstat_memory_total, "");
aoqi@0	110	return g_fun_perfstat_memory_total(name, userbuff, sizeof_userbuff, desired_number);
aoqi@0	111	}
aoqi@0	112
aoqi@0	113	int libperfstat::perfstat_cpu_total(perfstat_id_t *name, perfstat_cpu_total_t* userbuff,
aoqi@0	114	int sizeof_userbuff, int desired_number) {
aoqi@0	115	assert(g_initialized, "libperfstat not initialized");
aoqi@0	116	assert(g_fun_perfstat_cpu_total, "");
aoqi@0	117	return g_fun_perfstat_cpu_total(name, userbuff, sizeof_userbuff, desired_number);
aoqi@0	118	}
aoqi@0	119
aoqi@0	120	void libperfstat::perfstat_reset() {
aoqi@0	121	assert(g_initialized, "libperfstat not initialized");
aoqi@0	122	assert(g_fun_perfstat_reset, "");
aoqi@0	123	g_fun_perfstat_reset();
aoqi@0	124	}