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authorMarc Kleine-Budde <mkl@pengutronix.de>2010-12-18 11:25:34 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2010-12-20 09:28:21 +0100
commit0277a663bcbebe5be82dc88235fcd0a1465bd5e8 (patch)
tree039e836f2a424149bbffe1c154319be43ef9fe38 /common/Makefile
parentf4b1ebd2fdbfb2fd2382de894e027d014d1505d8 (diff)
downloadbarebox-0277a663bcbebe5be82dc88235fcd0a1465bd5e8.tar.gz
barebox-0277a663bcbebe5be82dc88235fcd0a1465bd5e8.tar.xz
Add generic poll infrastructure
Barebox does not have interrupt functionality. Nevertheless it's sometimes useful to periodically call functions, like for example a heartbeat LED or watchdog reset. Instead of cluttering the code with calls to these functions this patch adds a generic polling infrastructure. Code which might run for longer now can call poller_call() periodically which in turn will call all registered pollers. This patch adds a call to poller_call in two generic pathes. First of them is getc() which covers waiting for uart input. Second is ctrlc() which should be called anyway from code which might run for longer. So instead adding poller_call directly to your code, consider checking ctrlc instead which also gives additional convenience to the user. The poller code is safe against reentrancy which means that it's safe to call poller_call inside a poller. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'common/Makefile')
-rw-r--r--common/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/common/Makefile b/common/Makefile
index 753455b64f..98c9d36c12 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -5,6 +5,7 @@ obj-$(CONFIG_OF_FLAT_TREE) += ft_build.o
obj-$(CONFIG_KALLSYMS) += kallsyms.o
obj-$(CONFIG_ENV_HANDLING) += environment.o
obj-$(CONFIG_AUTO_COMPLETE) += complete.o
+obj-$(CONFIG_POLLER) += poller.o
obj-y += dlmalloc.o
obj-y += clock.o