From e396e33ad2ea10633c42ec4c580770cb92148dbc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michael=20B=C3=BCsch?= Date: Fri, 29 Oct 2010 14:53:16 +0000 Subject: Add macro for locking of recipe commands. SVN-Revision: 23708 --- rules.mk | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/rules.mk b/rules.mk index 23445bf..007e5bc 100644 --- a/rules.mk +++ b/rules.mk @@ -249,6 +249,16 @@ define include_mk $(eval -include $(if $(DUMP),,$(STAGING_DIR)/mk/$(strip $(1)))) endef +# Execute commands under flock +# $(1) => The shell expression. +# $(2) => The lock name. If not given, the global lock will be used. +# $(3) => The filedescriptor used for the lock. Defaults to 1023. +define locked + ( $(STAGING_DIR_HOST)/bin/flock -x $(if $(3),$(3),1023) && \ + $(1) \ + ) $(if $(3),$(strip $(3)),1023)>$(TMP_DIR)/.$(if $(2),$(strip $(2)),global).flock +endef + # file extension ext=$(word $(words $(subst ., ,$(1))),$(subst ., ,$(1))) -- cgit v1.1