| sem_getvalue.3 (ddb4fb5b4456fd60b65d4cfd671ad987aa5a8547) | sem_getvalue.3 (51f2ddd7af07ee09e4491db48435add85c117b4c) |
|---|---|
| 1.\" Copyright (C) 2000 Jason Evans <jasone@FreeBSD.org>. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice(s), this list of conditions and the following disclaimer as --- 47 unchanged lines hidden (view full) --- 56.Bl -tag -width Er 57.It Bq Er EINVAL 58.Fa sem 59points to an invalid semaphore. 60.El 61.Sh SEE ALSO 62.Xr sem_post 3 , 63.Xr sem_trywait 3 , | 1.\" Copyright (C) 2000 Jason Evans <jasone@FreeBSD.org>. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice(s), this list of conditions and the following disclaimer as --- 47 unchanged lines hidden (view full) --- 56.Bl -tag -width Er 57.It Bq Er EINVAL 58.Fa sem 59points to an invalid semaphore. 60.El 61.Sh SEE ALSO 62.Xr sem_post 3 , 63.Xr sem_trywait 3 , |
| 64.Xr sem_wait 3 | 64.Xr sem_wait 3 , 65.Xr sem 4 |
| 65.Sh STANDARDS 66.Fn sem_getvalue 67conforms to 68.St -p1003.1-96 . 69.Pp 70The value of the semaphore is never negative, even if there are threads blocked 71on the semaphore. POSIX is somewhat ambiguous in its wording with regard to 72what the value of the semaphore should be if there are blocked waiting threads, 73but this behavior is conformant, given the wording of the specification. | 66.Sh STANDARDS 67.Fn sem_getvalue 68conforms to 69.St -p1003.1-96 . 70.Pp 71The value of the semaphore is never negative, even if there are threads blocked 72on the semaphore. POSIX is somewhat ambiguous in its wording with regard to 73what the value of the semaphore should be if there are blocked waiting threads, 74but this behavior is conformant, given the wording of the specification. |