206b96202c
See also:
http://article.gmane.org/gmane.linux.kernel/1268792
The C compiler will handle (void) as "no arguments" and () as "variadic
function" (equivalent to (...)) which might lead to subtle errors, such
as the one which was fixed with commit 0ea64ae4.
86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
/*
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* vim:ts=4:sw=4:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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* © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
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*
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* ipc.c: UNIX domain socket IPC (initialization, client handling, protocol).
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*
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*/
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#ifndef _IPC_H
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#define _IPC_H
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#include <ev.h>
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#include <stdbool.h>
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#include <yajl/yajl_gen.h>
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#include <yajl/yajl_parse.h>
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#include "data.h"
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#include "tree.h"
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#include "i3/ipc.h"
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extern char *current_socketpath;
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typedef struct ipc_client {
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int fd;
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/* The events which this client wants to receive */
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int num_events;
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char **events;
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TAILQ_ENTRY(ipc_client) clients;
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} ipc_client;
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/*
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* Callback type for the different message types.
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*
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* message is the raw packet, as received from the UNIX domain socket. size
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* is the remaining size of bytes for this packet.
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*
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* message_size is the size of the message as the sender specified it.
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* message_type is the type of the message as the sender specified it.
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*
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*/
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typedef void(*handler_t)(int, uint8_t*, int, uint32_t, uint32_t);
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/* Macro to declare a callback */
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#define IPC_HANDLER(name) \
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static void handle_ ## name (int fd, uint8_t *message, \
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int size, uint32_t message_size, \
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uint32_t message_type)
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/**
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* Handler for activity on the listening socket, meaning that a new client
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* has just connected and we should accept() him. Sets up the event handler
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* for activity on the new connection and inserts the file descriptor into
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* the list of clients.
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*
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*/
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void ipc_new_client(EV_P_ struct ev_io *w, int revents);
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/**
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* Creates the UNIX domain socket at the given path, sets it to non-blocking
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* mode, bind()s and listen()s on it.
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*
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*/
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int ipc_create_socket(const char *filename);
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/**
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* Sends the specified event to all IPC clients which are currently connected
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* and subscribed to this kind of event.
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*
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*/
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void ipc_send_event(const char *event, uint32_t message_type, const char *payload);
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/**
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* Calls shutdown() on each socket and closes it. This function to be called
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* when exiting or restarting only!
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*
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*/
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void ipc_shutdown(void);
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void dump_node(yajl_gen gen, Con *con, bool inplace_restart);
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#endif
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