Add basic multithreading example
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fincs
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196
examples/threads/thread-basic/Makefile
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196
examples/threads/thread-basic/Makefile
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#---------------------------------------------------------------------------------
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.SUFFIXES:
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(DEVKITARM)),)
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$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
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endif
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TOPDIR ?= $(CURDIR)
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include $(DEVKITARM)/3ds_rules
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#---------------------------------------------------------------------------------
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# TARGET is the name of the output
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# BUILD is the directory where object files & intermediate files will be placed
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# SOURCES is a list of directories containing source code
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# DATA is a list of directories containing data files
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# INCLUDES is a list of directories containing header files
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#
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# NO_SMDH: if set to anything, no SMDH file is generated.
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# ROMFS is the directory which contains the RomFS, relative to the Makefile (Optional)
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# APP_TITLE is the name of the app stored in the SMDH file (Optional)
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# APP_DESCRIPTION is the description of the app stored in the SMDH file (Optional)
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# APP_AUTHOR is the author of the app stored in the SMDH file (Optional)
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# ICON is the filename of the icon (.png), relative to the project folder.
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# If not set, it attempts to use one of the following (in this order):
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# - <Project name>.png
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# - icon.png
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# - <libctru folder>/default_icon.png
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#---------------------------------------------------------------------------------
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TARGET := $(notdir $(CURDIR))
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BUILD := build
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SOURCES := source
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DATA := data
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INCLUDES := include
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#ROMFS := romfs
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#---------------------------------------------------------------------------------
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# options for code generation
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#---------------------------------------------------------------------------------
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ARCH := -march=armv6k -mtune=mpcore -mfloat-abi=hard
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CFLAGS := -g -Wall -O2 -mword-relocations \
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-fomit-frame-pointer -ffunction-sections \
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$(ARCH)
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CFLAGS += $(INCLUDE) -DARM11 -D_3DS
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CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11
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ASFLAGS := -g $(ARCH)
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LDFLAGS = -specs=3dsx.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map) -Wl,--gc-sections
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LIBS := -lctru -lm
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#---------------------------------------------------------------------------------
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# list of directories containing libraries, this must be the top level containing
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# include and lib
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#---------------------------------------------------------------------------------
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LIBDIRS := $(CTRULIB)
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#---------------------------------------------------------------------------------
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# no real need to edit anything past this point unless you need to add additional
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# rules for different file extensions
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#---------------------------------------------------------------------------------
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ifneq ($(BUILD),$(notdir $(CURDIR)))
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#---------------------------------------------------------------------------------
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export OUTPUT := $(CURDIR)/$(TARGET)
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export TOPDIR := $(CURDIR)
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export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
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$(foreach dir,$(DATA),$(CURDIR)/$(dir))
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export DEPSDIR := $(CURDIR)/$(BUILD)
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CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
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CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
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SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
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PICAFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.v.pica)))
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SHLISTFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.shlist)))
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BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
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#---------------------------------------------------------------------------------
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# use CXX for linking C++ projects, CC for standard C
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(CPPFILES)),)
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#---------------------------------------------------------------------------------
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export LD := $(CC)
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#---------------------------------------------------------------------------------
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else
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#---------------------------------------------------------------------------------
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export LD := $(CXX)
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#---------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------
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export OFILES := $(addsuffix .o,$(BINFILES)) \
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$(PICAFILES:.v.pica=.shbin.o) $(SHLISTFILES:.shlist=.shbin.o) \
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$(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
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export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
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$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
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-I$(CURDIR)/$(BUILD)
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export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib)
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ifeq ($(strip $(ICON)),)
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icons := $(wildcard *.png)
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ifneq (,$(findstring $(TARGET).png,$(icons)))
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export APP_ICON := $(TOPDIR)/$(TARGET).png
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else
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ifneq (,$(findstring icon.png,$(icons)))
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export APP_ICON := $(TOPDIR)/icon.png
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endif
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endif
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else
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export APP_ICON := $(TOPDIR)/$(ICON)
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endif
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ifeq ($(strip $(NO_SMDH)),)
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export _3DSXFLAGS += --smdh=$(CURDIR)/$(TARGET).smdh
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endif
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ifneq ($(ROMFS),)
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export _3DSXFLAGS += --romfs=$(CURDIR)/$(ROMFS)
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endif
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.PHONY: $(BUILD) clean all
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#---------------------------------------------------------------------------------
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all: $(BUILD)
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$(BUILD):
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@[ -d $@ ] || mkdir -p $@
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@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
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#---------------------------------------------------------------------------------
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clean:
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@echo clean ...
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@rm -fr $(BUILD) $(TARGET).3dsx $(OUTPUT).smdh $(TARGET).elf
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#---------------------------------------------------------------------------------
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else
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DEPENDS := $(OFILES:.o=.d)
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#---------------------------------------------------------------------------------
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# main targets
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(NO_SMDH)),)
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$(OUTPUT).3dsx : $(OUTPUT).elf $(OUTPUT).smdh
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else
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$(OUTPUT).3dsx : $(OUTPUT).elf
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endif
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$(OUTPUT).elf : $(OFILES)
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#---------------------------------------------------------------------------------
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# you need a rule like this for each extension you use as binary data
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#---------------------------------------------------------------------------------
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%.bin.o : %.bin
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#---------------------------------------------------------------------------------
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@echo $(notdir $<)
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@$(bin2o)
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#---------------------------------------------------------------------------------
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# rules for assembling GPU shaders
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#---------------------------------------------------------------------------------
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define shader-as
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$(eval CURBIN := $(patsubst %.shbin.o,%.shbin,$(notdir $@)))
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picasso -o $(CURBIN) $1
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bin2s $(CURBIN) | $(AS) -o $@
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echo "extern const u8" `(echo $(CURBIN) | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`"_end[];" > `(echo $(CURBIN) | tr . _)`.h
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echo "extern const u8" `(echo $(CURBIN) | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`"[];" >> `(echo $(CURBIN) | tr . _)`.h
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echo "extern const u32" `(echo $(CURBIN) | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`_size";" >> `(echo $(CURBIN) | tr . _)`.h
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endef
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%.shbin.o : %.v.pica %.g.pica
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@echo $(notdir $^)
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@$(call shader-as,$^)
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%.shbin.o : %.v.pica
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@echo $(notdir $<)
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@$(call shader-as,$<)
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%.shbin.o : %.shlist
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@echo $(notdir $<)
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@$(call shader-as,$(foreach file,$(shell cat $<),$(dir $<)/$(file)))
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-include $(DEPENDS)
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#---------------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------------
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65
examples/threads/thread-basic/source/main.c
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65
examples/threads/thread-basic/source/main.c
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@ -0,0 +1,65 @@
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#include <string.h>
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#include <stdio.h>
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#include <3ds.h>
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#define NUMTHREADS 3
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#define STACKSIZE (4 * 1024)
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volatile bool runThreads = true;
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void threadMain(void *arg)
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{
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u64 sleepDuration = 1000000ULL * (u32)arg;
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int i = 0;
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while (runThreads)
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{
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printf("thread%d says %d\n", (int)arg, i++);
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svcSleepThread(sleepDuration);
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}
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}
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int main(int argc, char** argv)
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{
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gfxInitDefault();
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consoleInit(GFX_TOP, NULL);
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Thread threads[NUMTHREADS];
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int i;
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s32 prio = 0;
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svcGetThreadPriority(&prio, CUR_THREAD_HANDLE);
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printf("Main thread prio: 0x%lx\n", prio);
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for (i = 0; i < NUMTHREADS; i ++)
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{
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// The priority of these child threads must be higher (aka the value is lower) than that
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// of the main thread, otherwise there is thread starvation due to stdio being locked.
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threads[i] = threadCreate(threadMain, (void*)((i+1)*250), STACKSIZE, prio-1, -2, false);
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printf("created thread %d: %p\n", i, threads[i]);
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}
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// Main loop
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while (aptMainLoop())
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{
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gspWaitForVBlank();
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hidScanInput();
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u32 kDown = hidKeysDown();
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if (kDown & KEY_START)
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break; // break in order to return to hbmenu
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// Flush and swap framebuffers
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gfxFlushBuffers();
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gfxSwapBuffers();
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}
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// tell threads to exit & wait for them to exit
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runThreads = false;
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for (i = 0; i < NUMTHREADS; i ++)
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{
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threadJoin(threads[i], U64_MAX);
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threadFree(threads[i]);
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}
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gfxExit();
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return 0;
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}
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