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49114fd43d
This updates Gnulib to v0.0-4889-ge375fe3. * m4/gnulib-cache.m4: Add `accept', `bind', `close', `connect', `getpeername', `getsockname', `getsockopt', `listen', `malloc', `malloca', `recv', `recvfrom', `send', `sendto', `setsockopt', `shutdown', `socket', and `sockets', requested by Jan Nieuwenhuizen <janneke-list@xs4all.nl> for cross-MinGW32 builds. Add `trunc', requested by Mark H Weaver <mhw@netris.org>.
47 lines
1.8 KiB
C
47 lines
1.8 KiB
C
/* Detect the number of processors.
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Copyright (C) 2009-2011 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program 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
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/* Written by Glen Lenker and Bruno Haible. */
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/* Allow the use in C++ code. */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* A "processor" in this context means a thread execution unit, that is either
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- an execution core in a (possibly multi-core) chip, in a (possibly multi-
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chip) module, in a single computer, or
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- a thread execution unit inside a core
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(hyper-threading, see <http://en.wikipedia.org/wiki/Hyper-threading>).
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Which of the two definitions is used, is unspecified. */
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enum nproc_query
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{
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NPROC_ALL, /* total number of processors */
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NPROC_CURRENT, /* processors available to the current process */
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NPROC_CURRENT_OVERRIDABLE /* likewise, but overridable through the
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OMP_NUM_THREADS environment variable */
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};
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/* Return the total number of processors. The result is guaranteed to
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be at least 1. */
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extern unsigned long int num_processors (enum nproc_query query);
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#ifdef __cplusplus
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}
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#endif /* C++ */
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