input.c File Reference

#include "devices/input.h"
#include <debug.h>
#include "devices/intq.h"
#include "devices/serial.h"

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Functions
void	input_init (void)
	Initializes the input buffer. More...
void	input_putc (uint8_t key)
	Adds a key to the input buffer. More...
uint8_t	input_getc (void)
	Retrieves a key from the input buffer. More...
bool	input_full (void)
	Returns true if the input buffer is full, false otherwise. More...

Variables
static struct intq	buffer
	Stores keys from the keyboard and serial port. More...

Function Documentation

input_full()

bool input_full

(

void

)

Returns true if the input buffer is full, false otherwise.

devices/input.h

Interrupts must be off.

Definition at line 48 of file input.c.

References ASSERT, buffer, intq_full(), intr_get_level(), and INTR_OFF.

Referenced by keyboard_interrupt(), serial_interrupt(), and write_ier().

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input_getc()

uint8_t input_getc

(

void

)

Retrieves a key from the input buffer.

If the buffer is empty, waits for a key to be pressed.

Definition at line 31 of file input.c.

References buffer, intq_getc(), intr_disable(), intr_set_level(), and serial_notify().

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input_init()

void input_init

(

void

)

Initializes the input buffer.

Definition at line 11 of file input.c.

References buffer, and intq_init().

Referenced by pintos_init().

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input_putc()

void input_putc

(

uint8_t

key

)

Adds a key to the input buffer.

Interrupts must be off and the buffer must not be full.

Definition at line 19 of file input.c.

References ASSERT, buffer, intq_full(), intq_putc(), intr_get_level(), INTR_OFF, and serial_notify().

Referenced by keyboard_interrupt(), and serial_interrupt().

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Variable Documentation

buffer

struct intq buffer

static

Stores keys from the keyboard and serial port.

Definition at line 7 of file input.c.

Referenced by block_read(), block_write(), do_write(), file_read(), file_read_at(), file_write(), file_write_at(), fsutil_append(), fsutil_cat(), ide_read(), ide_write(), inode_read_at(), inode_write_at(), input_full(), input_getc(), input_init(), input_putc(), main(), partition_read(), partition_write(), putbuf(), read(), snprintf(), test_main(), try_write(), vsnprintf(), and write().