haiku/headers/os/app/Messenger.h

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/*
* Copyright 2001-2007, Haiku, Inc. All Rights Reserved.
* Distributed under the terms of the MIT License.
*
* Authors:
* Ingo Weinhold (bonefish@users.sf.net)
*/
#ifndef _MESSENGER_H
#define _MESSENGER_H
#include <OS.h>
#include <ByteOrder.h>
#include <Message.h>
class BHandler;
class BLooper;
class BMessenger {
public:
BMessenger();
BMessenger(const char *signature, team_id team = -1,
status_t *result = NULL);
BMessenger(const BHandler *handler, const BLooper *looper = NULL,
status_t *result = NULL);
BMessenger(const BMessenger &from);
~BMessenger();
// Target
bool IsTargetLocal() const;
BHandler *Target(BLooper **looper) const;
bool LockTarget() const;
status_t LockTargetWithTimeout(bigtime_t timeout) const;
// Message sending
status_t SendMessage(uint32 command, BHandler *replyTo = NULL) const;
status_t SendMessage(BMessage *message, BHandler *replyTo = NULL,
bigtime_t timeout = B_INFINITE_TIMEOUT) const;
status_t SendMessage(BMessage *message, BMessenger replyTo,
bigtime_t timeout = B_INFINITE_TIMEOUT) const;
status_t SendMessage(uint32 command, BMessage *reply) const;
status_t SendMessage(BMessage *message, BMessage *reply,
bigtime_t deliveryTimeout = B_INFINITE_TIMEOUT,
bigtime_t replyTimeout = B_INFINITE_TIMEOUT) const;
// Operators and misc
BMessenger &operator=(const BMessenger &from);
bool operator==(const BMessenger &other) const;
bool IsValid() const;
team_id Team() const;
//----- Private or reserved -----------------------------------------
class Private;
private:
friend class Private;
void _SetTo(team_id team, port_id port, int32 token);
void _InitData(const char *signature, team_id team, status_t *result);
private:
port_id fPort;
int32 fHandlerToken;
team_id fTeam;
int32 _reserved[3];
};
bool operator<(const BMessenger &a, const BMessenger &b);
bool operator!=(const BMessenger &a, const BMessenger &b);
#endif // _MESSENGER_H