* [ECOS] is diag_printf thread safe?
@ 2006-06-12 6:21 saurabh prakash
2006-06-12 6:50 ` Andrew Lunn
0 siblings, 1 reply; 2+ messages in thread
From: saurabh prakash @ 2006-06-12 6:21 UTC (permalink / raw)
To: ecos-discuss
hello,
i want to know
1) whether diag_printf() and printf()
are thread safe?
2) is it safe to call them from a DSR
thnx in advance,
saurabh prakash
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [ECOS] is diag_printf thread safe?
2006-06-12 6:21 [ECOS] is diag_printf thread safe? saurabh prakash
@ 2006-06-12 6:50 ` Andrew Lunn
0 siblings, 0 replies; 2+ messages in thread
From: Andrew Lunn @ 2006-06-12 6:50 UTC (permalink / raw)
To: saurabh prakash; +Cc: ecos-discuss
On Mon, Jun 12, 2006 at 11:51:04AM +0530, saurabh prakash wrote:
> hello,
>
> i want to know
>
> 1) whether diag_printf() and printf()
> are thread safe?
They won't crash/cause corruption if two or more threads call them
simultaneously. You might get interleaved output. You would need to
check where the isr disable/mutex lockigng is respectively.
> 2) is it safe to call them from a DSR
printf no. diag_printf() can be called from ISR, DSR, threads etc.
Andrew
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2006-06-12 6:21 [ECOS] is diag_printf thread safe? saurabh prakash
2006-06-12 6:50 ` Andrew Lunn
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