diff options
Diffstat (limited to 'lib/libc/sys/accept.2')
| -rw-r--r-- | lib/libc/sys/accept.2 | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/lib/libc/sys/accept.2 b/lib/libc/sys/accept.2 index d475e3685b43..126000a2ecb6 100644 --- a/lib/libc/sys/accept.2 +++ b/lib/libc/sys/accept.2 @@ -129,6 +129,31 @@ by issuing a call with providing only the control information, or by calling .Xr setsockopt 2 . +.Sh IMPLEMENTATION NOTES +.Pp +In the non-threaded library +.Fn accept +is implemented as the +.Va accept +syscall. +.Pp +In the threaded library, the +.Va accept +syscall is assembled to +.Fn _thread_sys_accept +and +.Fn accept +is implemented as a function which locks +.Va s +for read and write, then calls +.Fn _thread_sys_accept . +If the call to +.Fn _thread_sys_accept +would block, a context switch is performed. Before returning, +.Fn accept +unlocks +.Va s . +.Pp .Sh RETURN VALUES The call returns \-1 on error. If it succeeds, it returns a non-negative integer that is a descriptor for the accepted socket. |