gate_operations.c File Reference

#include "libgate.h"
#include "liblsavl.h"
#include "gate.h"

Defines
#define	OK   0
#define	NOT_OK   1
Functions
int	gate_register (t_tcb *caller)
int	gate_unregister (t_tcb *caller)
int	gate_get_first (t_tcb *caller)
int	gate_get_next (t_tcb *caller)
int	gate_use (t_tcb *caller)
int	gate_unuse (t_tcb *caller)
Variables
static t_avl_class *	class_tree = NULL

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Define Documentation

#define NOT_OK   1

#define OK   0

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Function Documentation

int gate_get_first (  t_tcb *  caller  )

Gets the first occurence of a gate. Parameters: caller  The tcb of the calling process. Returns:

int gate_get_next (  t_tcb *  caller  )

XXX For now we need to use the int class to know the class, but this should be changed so that we use only the gate info. Gets the next occurence of a gate. Parameters: caller  The tcb of the calling process. Returns: OK if the gate_infos structure of the caller was correctly updated, ENOGATE if this was already the last gate (or if the number of under gate was totally wrong), or ECOPY if the copy failed.

int gate_register (  t_tcb *  caller  )

Registers a gate in the gate service, creating new classes if it has to. Parameters: caller  The process calling the gate (which is actually a gate) who wishes to register itself. This is not a pid_t, but a t_tcb, a structure that describes a process. XXX : Where is it declared ? Returns: 0 if all happened smoothly. Otherwise, well... other values that ain't zero :)

int gate_unregister (  t_tcb *  caller  )

Unregisters a gate from the class tree. This is the method called when a gate decides to unregister itself. Parameters: caller  the tcb of the gate willing to unregister itself. Returns: OK if all went smoothly.

int gate_unuse (  t_tcb *  caller  )

This is where a process tells the gate manager that it has finished to use the gate. Parameters: caller  Returns:

int gate_use (  t_tcb *  caller  )

This function is used to tell the gate service that a process wishes to use a given gate now it has found it. Parameters: caller  The tcb of the process wishing to use the gate. Returns:

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Variable Documentation

t_avl_class* class_tree = NULL [static]

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