/*

 * pfmlib_os_macos.c: set of functions for MacOS (Tiger)

 *

 * Copyright (c) 2008 Stephane Eranian

 * Contributed by Stephane Eranian <eranian@gmail.com>

 * As a sign of friendship to my friend Eric, big fan of MacOS

 * 

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies

 * of the Software, and to permit persons to whom the Software is furnished to do so,

 * subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in all

 * copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,

 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A

 * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF

 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE

 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 */

#include <sys/types.h>

#include <stdint.h>

#include <stdio.h>

#include <string.h>

#include <unistd.h>

#include <sys/sysctl.h>

#include "pfmlib_priv.h"

typedef enum {

	TYPE_NONE,

	TYPE_STR,

	TYPE_INT

} mib_name_t;

/*

 * helper function to retrieve one value from /proc/cpuinfo

 * for internal libpfm use only

 * attr: the attribute (line) to look for

 * ret_buf: a buffer to store the value of the attribute (as a string)

 * maxlen : number of bytes of capacity in ret_buf

 *

 * ret_buf is null terminated.

 *

 * Return:

 * 	0 : attribute found, ret_buf populated

 * 	-1: attribute not found

 */

int

__pfm_getcpuinfo_attr(const char *attr, char *ret_buf, size_t maxlen)

{

	mib_name_t type = TYPE_NONE;

	union {

		char str[32];

		int val;

	} value;

	char *name = NULL;

	int mib[16];

	int ret = -1;

	size_t len, mib_len;

	if (attr == NULL || ret_buf == NULL || maxlen < 1)

		return -1;

	*ret_buf = '\0';

	if (!strcmp(attr, "vendor_id")) {

		name = 	"machdep.cpu.vendor";

		type = TYPE_STR;

	} else if (!strcmp(attr, "model")) {

		name = "machdep.cpu.model";

		type = TYPE_INT;

	} else if (!strcmp(attr, "cpu family")) {

		name = "machdep.cpu.family";

		type = TYPE_INT;

	}

	mib_len = 16;

	ret = sysctlnametomib(name, mib, &mib_len);

	if (ret)

		return -1;

	len = sizeof(value);

	ret = sysctl(mib, mib_len, &value, &len, NULL, 0);

	if (ret)

		return ret;

	if (type == TYPE_STR)

		strncpy(ret_buf, value.str, maxlen);

	else if (type == TYPE_INT)

		snprintf(ret_buf, maxlen, "%d", value.val);

	__pfm_vbprintf("attr=%s ret=%d ret_buf=%s\n", attr, ret, ret_buf);

	return ret;

}

void

pfm_init_syscalls(void)

{

}