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[parseopt] Add parse_timeout()

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Parsing a timeout value (specified in milliseconds) into an internal
timeout value measured in timer ticks is a common operation.  Provide
a parse_timeout() value to carry out this conversion automatically.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2013-11-01 02:22:12 +00:00
parent b15dbc9cc6
commit 5e1fa5cd40
12 changed files with 46 additions and 27 deletions
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7
src/usr/prompt.c
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@@ -28,28 +28,27 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <errno.h>
#include <stdio.h>
#include <ipxe/console.h>
#include <ipxe/timer.h>
#include <usr/prompt.h>
/**
* Prompt for keypress
*
* @v text Prompt string
* @v wait_ms Time to wait, in milliseconds (0=indefinite)
* @v timeout Timeout period, in ticks (0=indefinite)
* @v key Key to wait for (0=any key)
* @ret rc Return status code
*
* Returns success if the specified key was pressed within the
* specified timeout period.
*/
int prompt ( const char *text, unsigned int wait_ms, int key ) {
int prompt ( const char *text, unsigned long timeout, int key ) {
int key_pressed;
/* Display prompt */
printf ( "%s", text );
/* Wait for key */
key_pressed = getkey ( ( wait_ms * TICKS_PER_SEC ) / 1000 );
key_pressed = getkey ( timeout );
/* Clear the prompt line */
while ( *(text++) )