diff options
Diffstat (limited to 'lib/poll.h')
| -rw-r--r-- | lib/poll.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/poll.h b/lib/poll.h new file mode 100644 index 00000000..f519411f --- /dev/null +++ b/lib/poll.h @@ -0,0 +1,26 @@ +# POLL.H -- FPOLL definitions (poll a set of file descriptors). + +define MAX_POLL_FD 32 # max number of polling fds +define MPFD MAX_POLL_FD # utility shorthand +define LEN_FPOLL (4+(3*MPFD)) # length of polling structure + +define INFTIM -1 # poll will block until event + + +# Structure of file descriptor/event pairs supplied in the poll arrays. The +# array elements are zero-indexed. +define POLL_NFD Memi[$1] # no. of file descriptors to poll +define POLL_FD Memi[$1+1+(0*MPFD)+$2] # file descriptor array +define POLL_EVENTS Memi[$1+1+(1*MPFD)+$2] # events of interest on fd +define POLL_REVENTS Memi[$1+1+(2*MPFD)+$2] # (return) events on fd + +# Testable select events. +define POLLIN 001B # fd is readable +define POLLPRI 002B # priority info at fd +define POLLOUT 004B # fd is writeable (won't block) + +# Non-testable poll events (may not be specified in events field, +# but may be returned in revents field). +define POLLERR 010B # fd has error condition +define POLLHUP 020B # fd has been hung up on +define POLLNVAL 040B # invalid pollfd entry |