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i3/include/ipc.h
2011-10-25 21:19:38 +01:00

86 lines
2.2 KiB
C

/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
* © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
*
* ipc.c: UNIX domain socket IPC (initialization, client handling, protocol).
*
*/
#ifndef _IPC_H
#define _IPC_H
#include <ev.h>
#include <stdbool.h>
#include <yajl/yajl_gen.h>
#include <yajl/yajl_parse.h>
#include "data.h"
#include "tree.h"
#include "i3/ipc.h"
extern char *current_socketpath;
typedef struct ipc_client {
int fd;
/* The events which this client wants to receive */
int num_events;
char **events;
TAILQ_ENTRY(ipc_client) clients;
} ipc_client;
/*
* Callback type for the different message types.
*
* message is the raw packet, as received from the UNIX domain socket. size
* is the remaining size of bytes for this packet.
*
* message_size is the size of the message as the sender specified it.
* message_type is the type of the message as the sender specified it.
*
*/
typedef void(*handler_t)(int, uint8_t*, int, uint32_t, uint32_t);
/* Macro to declare a callback */
#define IPC_HANDLER(name) \
static void handle_ ## name (int fd, uint8_t *message, \
int size, uint32_t message_size, \
uint32_t message_type)
/**
* Handler for activity on the listening socket, meaning that a new client
* has just connected and we should accept() him. Sets up the event handler
* for activity on the new connection and inserts the file descriptor into
* the list of clients.
*
*/
void ipc_new_client(EV_P_ struct ev_io *w, int revents);
/**
* Creates the UNIX domain socket at the given path, sets it to non-blocking
* mode, bind()s and listen()s on it.
*
*/
int ipc_create_socket(const char *filename);
/**
* Sends the specified event to all IPC clients which are currently connected
* and subscribed to this kind of event.
*
*/
void ipc_send_event(const char *event, uint32_t message_type, const char *payload);
/**
* Calls shutdown() on each socket and closes it. This function to be called
* when exiting or restarting only!
*
*/
void ipc_shutdown();
void dump_node(yajl_gen gen, Con *con, bool inplace_restart);
#endif