1# ART configuration that has to be determined after product config is resolved. 2# 3# Inputs: 4# PRODUCT_ENABLE_UFFD_GC: See comments in build/make/core/product.mk. 5# OVERRIDE_ENABLE_UFFD_GC: Overrides PRODUCT_ENABLE_UFFD_GC. Can be passed from the commandline for 6# debugging purposes. 7# BOARD_API_LEVEL: See comments in build/make/core/main.mk. 8# BOARD_SHIPPING_API_LEVEL: See comments in build/make/core/main.mk. 9# PRODUCT_SHIPPING_API_LEVEL: See comments in build/make/core/product.mk. 10# 11# Outputs: 12# ENABLE_UFFD_GC: Whether to use userfaultfd GC. 13 14config_enable_uffd_gc := \ 15 $(firstword $(OVERRIDE_ENABLE_UFFD_GC) $(PRODUCT_ENABLE_UFFD_GC)) 16 17ifeq (,$(filter-out default,$(config_enable_uffd_gc))) 18 ENABLE_UFFD_GC := true 19 20 # Disable userfaultfd GC if the device doesn't support it (i.e., if 21 # `min(ro.board.api_level ?? ro.board.first_api_level ?? MAX_VALUE, 22 # ro.product.first_api_level ?? ro.build.version.sdk ?? MAX_VALUE) < 31`) 23 # This logic aligns with how `ro.vendor.api_level` is calculated in 24 # `system/core/init/property_service.cpp`. 25 # We omit the check on `ro.build.version.sdk` here because we are on the latest build system. 26 board_api_level := $(firstword $(BOARD_API_LEVEL) $(BOARD_SHIPPING_API_LEVEL)) 27 ifneq (,$(board_api_level)) 28 ifeq (true,$(call math_lt,$(board_api_level),31)) 29 ENABLE_UFFD_GC := false 30 endif 31 endif 32 33 ifneq (,$(PRODUCT_SHIPPING_API_LEVEL)) 34 ifeq (true,$(call math_lt,$(PRODUCT_SHIPPING_API_LEVEL),31)) 35 ENABLE_UFFD_GC := false 36 endif 37 endif 38else ifeq (true,$(config_enable_uffd_gc)) 39 ENABLE_UFFD_GC := true 40else ifeq (false,$(config_enable_uffd_gc)) 41 ENABLE_UFFD_GC := false 42else 43 $(error Unknown PRODUCT_ENABLE_UFFD_GC value: $(config_enable_uffd_gc)) 44endif 45 46ADDITIONAL_PRODUCT_PROPERTIES += ro.dalvik.vm.enable_uffd_gc=$(ENABLE_UFFD_GC) 47