40 lines
917 B
C
40 lines
917 B
C
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#ifndef KERNEL_PORT_H_
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#define KERNEL_PORT_H_
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#include <kernel/object.h>
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#include <kernel/sched.h>
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enum port_status {
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/* port is not connected */
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PORT_OFFLINE = 0,
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/* port is connected and ready to send messages */
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PORT_READY,
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/* port has sent a message, and is waiting for the remote to receive it
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*/
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PORT_SEND_BLOCKED,
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/* port has sent a message, and the remote has received it. waiting for
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* the remote to reply. */
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PORT_REPLY_BLOCKED,
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};
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struct port {
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struct object p_base;
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enum port_status p_status;
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struct channel *p_remote;
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};
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extern kern_status_t port_type_init(void);
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extern struct port *port_cast(struct object *obj);
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extern struct port *port_create(void);
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extern kern_status_t port_connect(struct port *port, struct channel *remote);
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extern kern_status_t port_send_msg(
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struct port *port,
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const struct msg *req,
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struct msg *resp);
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DEFINE_OBJECT_LOCK_FUNCTION(port, p_base)
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#endif
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