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54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/* Get system load averages. Mach version.
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Copyright (C) 1999-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <mach.h>
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#include <mach/host_info.h>
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#include <hurd.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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/* Put the 1 minute, 5 minute and 15 minute load averages
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into the first NELEM elements of LOADAVG.
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Return the number written (never more than 3, but may be less than NELEM),
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or -1 if an error occurred. */
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int
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getloadavg (double loadavg[], int nelem)
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{
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host_load_info_data_t info;
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mach_msg_type_number_t size = HOST_LOAD_INFO_COUNT;
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error_t err;
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int i;
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err = __host_info (__mach_host_self (), HOST_LOAD_INFO,
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(host_info_t) &info, &size);
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if (err)
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return __hurd_fail (err);
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if (size < HOST_LOAD_INFO_COUNT)
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return __hurd_fail (EGRATUITOUS);
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if (nelem > 3)
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nelem = 3;
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for (i = 0; i < nelem; ++i)
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loadavg[i] = (double) info.avenrun[i] / (double) LOAD_SCALE;
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return i;
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}
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