diff options
| author | Heiko Schocher <hs@denx.de> | 2012-01-16 21:13:05 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-02-12 10:11:23 +0100 |
| commit | 9c3483113de1204118a1b252bf4c81b899dd12b4 (patch) | |
| tree | 5f7af1ceb46bd36f92f63076081174db1d84bb96 /common/main.c | |
| parent | 2627c8c0a1bc64099cf6b6e2d978d666f88ef08d (diff) | |
common: add possibility for readline_into_buffer timeout
add possibility to add a timeout when reading a line
into a buffer.
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Mike Frysinger <vapier@gentoo.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'common/main.c')
| -rw-r--r-- | common/main.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/common/main.c b/common/main.c index e96c95a038..248744ba74 100644 --- a/common/main.c +++ b/common/main.c @@ -685,7 +685,8 @@ static void cread_add_str(char *str, int strsize, int insert, unsigned long *num } } -static int cread_line(const char *const prompt, char *buf, unsigned int *len) +static int cread_line(const char *const prompt, char *buf, unsigned int *len, + int timeout) { unsigned long num = 0; unsigned long eol_num = 0; @@ -695,6 +696,7 @@ static int cread_line(const char *const prompt, char *buf, unsigned int *len) int esc_len = 0; char esc_save[8]; int init_len = strlen(buf); + int first = 1; if (init_len) cread_add_str(buf, init_len, 1, &num, &eol_num, buf, *len); @@ -707,6 +709,16 @@ static int cread_line(const char *const prompt, char *buf, unsigned int *len) WATCHDOG_RESET(); } #endif + if (first && timeout) { + uint64_t etime = endtick(timeout); + + while (!tstc()) { /* while no incoming data */ + if (get_ticks() >= etime) + return -2; /* timed out */ + WATCHDOG_RESET(); + } + first = 0; + } ichar = getcmd_getch(); @@ -922,11 +934,11 @@ int readline (const char *const prompt) */ console_buffer[0] = '\0'; - return readline_into_buffer(prompt, console_buffer); + return readline_into_buffer(prompt, console_buffer, 0); } -int readline_into_buffer (const char *const prompt, char * buffer) +int readline_into_buffer(const char *const prompt, char *buffer, int timeout) { char *p = buffer; #ifdef CONFIG_CMDLINE_EDITING @@ -949,7 +961,7 @@ int readline_into_buffer (const char *const prompt, char * buffer) if (prompt) puts (prompt); - rc = cread_line(prompt, p, &len); + rc = cread_line(prompt, p, &len, timeout); return rc < 0 ? rc : len; } else { |