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authorMiles Bader <miles@gnu.org>1995-07-05 17:57:20 +0000
committerMiles Bader <miles@gnu.org>1995-07-05 17:57:20 +0000
commit4605b51cb793b371c0abed4aca395f693b884707 (patch)
tree25443d86ef76f09707cccf70343e370c2832534a /pflocal
parent2f7a2005ce4c8d21250e69e276fd4bf610539c82 (diff)
Formerly sock.h.~2~
Diffstat (limited to 'pflocal')
-rw-r--r--pflocal/sock.h212
1 files changed, 9 insertions, 203 deletions
diff --git a/pflocal/sock.h b/pflocal/sock.h
index a858d019..6b6cc68e 100644
--- a/pflocal/sock.h
+++ b/pflocal/sock.h
@@ -1,4 +1,4 @@
-/* A server for local sockets, of type PF_LOCAL
+/* Internal sockets
Copyright (C) 1995 Free Software Foundation, Inc.
@@ -18,12 +18,14 @@
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-#ifndef __PFLOCAL_H__
-#define __PFLOCAL_H__
-
-/* ---------------------------------------------------------------- */
-/* Sockets */
+#ifndef __SOCK_H__
+#define __SOCK_H__
+
+#include <hurd/ports.h>
+#include <cthreads.h> /* For mutexes */
+struct pipe;
+
/* A port on SOCK. Multiple sock_user's can point to the same socket. */
struct sock_user
{
@@ -94,201 +96,5 @@ error_t sock_create (struct sock *template, struct sock **sock);
/* Return a new user port on SOCK in PORT. */
error_t sock_create_port (struct sock *sock, mach_port_t *port);
-
-/* ---------------------------------------------------------------- */
-/* Pipes */
-
-/* A description of a class of pipes and how to operate on them. */
-struct pipe_class
-{
- /* What sort of socket this corresponds too. */
- int sock_type;
-
- /* Flags, from PIPE_CLASS_*, below. */
- unsigned flags;
-
- /* Operations: */
-
- /* Read from BUF into DATA &c. */
- error_t (*read)(void *buf, char **data, unsigned *data_len, unsigned amount);
- /* Write DATA &c into BUF. */
- error_t (*write)(void *buf, char *data, unsigned data_len, unsigned *amount);
- /* Return the number of readable characters in BUF. */
- unsigned (*readable)(void *buf);
- /* Clear out any data. */
- error_t (*drain)(void *buf);
- /* Initialize *BUF or return an error. */
- error_t (*init)(void **buf);
- /* Cleanup BUF, freeing all resources. */
- void (*cleanup)(void *buf);
-};
-
-/* pipe_class flags */
-#define PIPE_CLASS_CONNECTIONLESS 0x1 /* A non-stream protocol. */
-
-/* Some pre-defined pipe_classes. */
-struct pipe_class *stream_pipe_class;
-struct pipe_class *dgram_pipe_class;
-struct pipe_class *seqpacket_pipe_class;
-
-/* ---------------------------------------------------------------- */
-
-/* A unidirectional data pipe; it transfers data from READER to WRITER. */
-struct pipe
-{
- /* What kind of pipe we are. */
- struct pipe_class *class;
-
- /* We use this to keep track of active threads using this pipe, so that
- while a thread is waiting to read from a pipe and that pipe gets
- deallocated (say by socket_shutdown), it doesn't actually go away until
- the reader realizes what happened. It is normally frobbed using
- pipe_aquire & pipe_release, which do locking as well.. */
- unsigned refs;
-
- /* Various flags, from PIPE_* below. */
- unsigned flags;
-
- /* Various timestamps for this pipe. */
- time_value_t read_time;
- time_value_t write_time;
-
- struct condition pending_reads;
- struct condition pending_selects;
-
- struct mutex lock;
-
- /* When interrupt_operation is called on a socket, we want to wake up all
- pending read threads, and have them realize they've been interrupted;
- reads that happen after the interrupt shouldn't return EINTR. When a
- thread waits on this pipe's PENDING_READS condition, it remembers this
- sequence number; any interrupt bumps this number and broadcasts on the
- condition. A reader thread will try to read from the pipe only if the
- sequence number is the same as when it went to sleep. */
- unsigned long interrupt_seq_num;
-
- /* The actual data, and how to access it. */
- void *data;
-};
-
-/* Pipe flags. */
-#define PIPE_BROKEN 0x1 /* This pipe isn't connected. */
-
-/* Lock PIPE and increment its ref count. */
-extern inline void
-pipe_aquire (struct pipe *pipe)
-{
- mutex_lock (&pipe->lock);
- pipe->refs++;
-}
-
-/* Decrement PIPE's (which should be locked) ref count and unlock it. If the
- ref count goes to zero, PIPE will be destroyed. */
-extern inline void
-pipe_release (struct pipe *pipe)
-{
- if (--pipe->refs == 0)
- pipe_free (pipe);
- else
- mutex_unlock (&pipe->lock);
-}
-
-/* Returns the number of characters quickly readable from PIPE. */
-extern inline unsigned
-pipe_readable (struct pipe *pipe)
-{
- return (*pipe->class->readable)(pipe->data);
-}
-
-/* Empty out PIPE of any data. */
-extern inline void
-pipe_drain (struct pipe *pipe)
-{
- (*pipe->class->drain)(pipe->data);
-}
-
-/* Writes up to LEN bytes of DATA, to PIPE, and returns the amount written in
- AMOUNT. If an error is returned, nothing is done. */
-error_t
-pipe_write (struct pipe *pipe, char *data, unsigned len, unsigned *amount);
-
-/* Reads up to AMOUNT bytes from PIPE, which should be locked, into DATA, and
- returns the amount written in LEN. If NOBLOCK is true, EWOULDBLOCK is
- returned instead of block when no data is immediately available. If an
- error is returned, nothing is done. */
-error_t pipe_read (struct pipe *pipe, int noblock,
- char **data, unsigned *len, unsigned amount);
-
-/* Waits for PIPE to be readable, or an error to occurr. If NOBLOCK is true,
- this operation will return EWOULDBLOCK instead of blocking when no data is
- immediately available. */
-error_t pipe_wait (struct pipe *pipe, int noblock);
-
-/* Wake up all threads waiting on PIPE, which should be locked. */
-void pipe_kick (struct pipe *pipe);
-
-/* Creates a new pipe of class CLASS and returns it in RESULT. */
-error_t pipe_create (struct pipe_class *class, struct pipe **pipe);
-
-/* Free PIPE and any resources it holds. */
-void pipe_free (struct pipe *pipe);
-
-/* ---------------------------------------------------------------- */
-
-struct connq;
-struct connq_request;
-
-/* Create a new listening queue, returning it in CQ. The resulting queue
- will be of zero length, that is it won't allow connections unless someone
- is already listening (change this with connq_set_length). */
-error_t connq_create (struct connq **cq);
-
-/* Wait for a connection attempt to be made on CQ, and return the connecting
- socket in SOCK, and a request tag in REQ. If REQ is NULL, the request is
- left in the queue, otherwise connq_request_complete must be called on REQ
- to allow the requesting thread to continue. If NOBLOCK is true,
- EWOULDBLOCK is returned when there are no immediate connections
- available. */
-error_t connq_listen (struct connq *cq, int noblock,
- struct connq_request **req, struct sock **sock);
-
-/* Return the error code ERR to the thread that made the listen request REQ,
- returned from a previous connq_listen. */
-void connq_request_complete (struct connq_request *req, error_t err);
-
-/* Set CQ's queue length to LENGTH. Any sockets already waiting for a
- connections that are past the new length will fail with ECONNREFUSED. */
-error_t connq_set_length (struct connq *cq, int length);
-
-/* Try to connect SOCK with the socket listening on CQ. If NOBLOCK is true,
- then return EWOULDBLOCK immediately when there are no immediate
- connections available. */
-error_t connq_connect (struct connq *cq, int noblock, struct sock *sock);
-
-/* ---------------------------------------------------------------- */
-/* Addresses */
-
-struct addr
-{
- struct port_info pi;
- struct mutex lock;
-
- /* Which socket is at this address. */
- struct sock *sock;
-};
-
-/* Create a new address. */
-error_t addr_create (struct addr **addr);
-
-/* Set ADDR's socket to SOCK, possibly discarding a previous binding. */
-error_t addr_set_sock (struct addr *addr, struct sock *sock);
-
-/* ---------------------------------------------------------------- */
-
-extern inline void
-timestamp (time_value_t *stamp)
-{
- host_get_time (mach_host_self (), stamp);
-}
-#endif /* __PFLOCAL_H__ */
+#endif /* __SOCK_H__ */