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[glibc.git] / ports / sysdeps / unix / sysv / linux / alpha / getsysstats.c
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1 /* Determine various system internal values, Linux/Alpha version.
2 Copyright (C) 1999-2014 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Andreas Schwab <schwab@suse.de>
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library. If not, see
18 <http://www.gnu.org/licenses/>. */
21 /* We need to define a special parser for /proc/cpuinfo. */
22 #define GET_NPROCS_PARSER(FD, BUFFER, CP, RE, BUFFER_END, RESULT) \
23 do \
24 { \
25 /* Find the line that contains the information about the number of \
26 active cpus. We don't have to fear extremely long lines since \
27 the kernel will not generate them. 8192 bytes are really enough. \
28 If there is no "CPUs ..." line then we are on a UP system. */ \
29 char *l; \
30 (RESULT) = 1; \
31 while ((l = next_line (FD, BUFFER, &CP, &RE, BUFFER_END)) != NULL) \
32 if ((sscanf (BUFFER, "cpus active : %d", &(RESULT)) == 1) \
33 || (sscanf (BUFFER, "CPUs probed %*d active %d", \
34 &(RESULT)) == 1)) \
35 break; \
36 } \
37 while (0)
40 /* On the Alpha we can distinguish between the number of configured and
41 active cpus. */
42 #define GET_NPROCS_CONF_PARSER(FP, BUFFER, RESULT) \
43 do \
44 { \
45 /* Find the line that contains the information about the number of \
46 probed cpus. We don't have to fear extremely long lines since \
47 the kernel will not generate them. 8192 bytes are really enough. \
48 If there is no "CPUs ..." line then we are on a UP system. */ \
49 (RESULT) = 1; \
50 while (fgets_unlocked ((BUFFER), sizeof (BUFFER), (FP)) != NULL) \
51 if ((sscanf (buffer, "cpus detected : %d", &(RESULT)) == 1) \
52 || (sscanf (buffer, "CPUs probed %d", &(RESULT)) == 1)) \
53 break; \
54 } \
55 while (0)
57 #include <sysdeps/unix/sysv/linux/getsysstats.c>