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Diffstat (limited to 'man3/sem_getvalue.3')
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diff --git a/man3/sem_getvalue.3 b/man3/sem_getvalue.3 deleted file mode 100644 index 925a9bd..0000000 --- a/man3/sem_getvalue.3 +++ /dev/null @@ -1,74 +0,0 @@ -'\" t -.\" Copyright (C) 2006 Michael Kerrisk <mtk.manpages@gmail.com> -.\" -.\" SPDX-License-Identifier: Linux-man-pages-copyleft -.\" -.TH sem_getvalue 3 2023-10-31 "Linux man-pages 6.7" -.SH NAME -sem_getvalue \- get the value of a semaphore -.SH LIBRARY -POSIX threads library -.RI ( libpthread ", " \-lpthread ) -.SH SYNOPSIS -.nf -.B #include <semaphore.h> -.P -.BI "int sem_getvalue(sem_t *restrict " sem ", int *restrict " sval ); -.fi -.SH DESCRIPTION -.BR sem_getvalue () -places the current value of the semaphore pointed to -.I sem -into the integer pointed to by -.IR sval . -.P -If one or more processes or threads are blocked -waiting to lock the semaphore with -.BR sem_wait (3), -POSIX.1 permits two possibilities for the value returned in -.IR sval : -either 0 is returned; -or a negative number whose absolute value is the count -of the number of processes and threads currently blocked in -.BR sem_wait (3). -Linux adopts the former behavior. -.SH RETURN VALUE -.BR sem_getvalue () -returns 0 on success; -on error, \-1 is returned and -.I errno -is set to indicate the error. -.SH ERRORS -.TP -.B EINVAL -.I sem -is not a valid semaphore. -(The glibc implementation currently does not check whether -.I sem -is valid.) -.SH ATTRIBUTES -For an explanation of the terms used in this section, see -.BR attributes (7). -.TS -allbox; -lbx lb lb -l l l. -Interface Attribute Value -T{ -.na -.nh -.BR sem_getvalue () -T} Thread safety MT-Safe -.TE -.SH STANDARDS -POSIX.1-2008. -.SH HISTORY -POSIX.1-2001. -.SH NOTES -The value of the semaphore may already have changed by the time -.BR sem_getvalue () -returns. -.SH SEE ALSO -.BR sem_post (3), -.BR sem_wait (3), -.BR sem_overview (7) |