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author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-12-27 17:45:04 +0000 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-12-27 17:45:04 +0000 |
commit | 6aa82888e61d3e2232926ee68e764f17eae2e7e1 (patch) | |
tree | 17b2fb350da15d1d097f22dc7e2e7d20db1bd486 /sysdeps/htl/pt-condattr-setclock.c | |
parent | ffbe9c552a1009167ec7a765c1543c7f3e4169d6 (diff) | |
parent | 963c37d5c0eb62b38f8764b23931c0dcdd497a13 (diff) |
Merge commit 'refs/top-bases/t/sendmsg-SCM_RIGHTS' into t/sendmsg-SCM_RIGHTS
Diffstat (limited to 'sysdeps/htl/pt-condattr-setclock.c')
-rw-r--r-- | sysdeps/htl/pt-condattr-setclock.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/sysdeps/htl/pt-condattr-setclock.c b/sysdeps/htl/pt-condattr-setclock.c new file mode 100644 index 0000000000..a6e37e6e5c --- /dev/null +++ b/sysdeps/htl/pt-condattr-setclock.c @@ -0,0 +1,51 @@ +/* pthread_condattr_setclock. Generic version. + Copyright (C) 2002-2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <pthread.h> +#include <pt-internal.h> + +int +pthread_condattr_setclock (pthread_condattr_t *attr, clockid_t clock) +{ + /* Only a few clocks are allowed. CLOCK_REALTIME is always allowed. + CLOCK_MONOTONIC only if the kernel has the necessary support. */ + if (clock == CLOCK_MONOTONIC) + { + /* Check whether the clock is available. */ + static int avail; + + if (avail == 0) + { + struct timespec ts; + int res; + + res = clock_gettime (CLOCK_MONOTONIC, &ts); + avail = res < 0 ? -1 : 1; + } + + if (avail < 0) + /* Not available. */ + return EINVAL; + } + else if (clock != CLOCK_REALTIME) + return EINVAL; + + attr->__clock = clock; + + return 0; +} |