WIP: threading support #4559
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WIP: threading support #4559
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This was referenced Oct 28, 2024
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Size difference with the dev branch: Binary size differencenot the same command!
tinygo build -size short -o ./build/test.hex -target=feather-rp2040 ./examples/adafruit4650
go: downloading tinygo.org/x/tinyfont v0.3.0
not the same command!
tinygo build -size short -o ./build/test.hex -target=nano-rp2040 -stack-size 8kb ./examples/net/websocket/dial/
go: downloading golang.org/x/net v0.7.0
not the same command!
tinygo build -size short -o ./build/test.hex -target=nano-rp2040 -stack-size 8kb ./examples/net/mqttclient/natiu/
go: downloading github.com/soypat/natiu-mqtt v0.5.1
not the same command!
tinygo build -size short -o ./build/test.hex -target=wioterminal -stack-size 8kb ./examples/net/mqttclient/paho/
go: downloading github.com/eclipse/paho.mqtt.golang v1.2.0
flash ram
before after diff before after diff
338132 337840 -292 -0.09% 15352 15360 8 0.05% tinygo build -size short -o ./build/test.hex -target=matrixportal-m4 -stack-size 8kb ./examples/net/webstatic/
286756 286468 -288 -0.10% 18192 18192 0 0.00% tinygo build -size short -o ./build/test.hex -target=wioterminal -stack-size 8kb ./examples/net/mqttclient/paho/
285876 285604 -272 -0.10% 17804 17820 16 0.09% tinygo build -size short -o ./build/test.hex -target=wioterminal -stack-size 8kb ./examples/net/webserver/
16716 16716 0 0.00% 4172 4172 0 0.00% tinygo build -size short -o ./build/test.hex -target=feather-rp2040 ./examples/adafruit4650
61472 61472 0 0.00% 6180 6180 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/adt7410/main.go
9568 9568 0 0.00% 4748 4748 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/adxl345/main.go
13568 13568 0 0.00% 6788 6788 0 0.00% tinygo build -size short -o ./build/test.hex -target=pybadge ./examples/amg88xx
8680 8680 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/apa102/main.go
11884 11884 0 0.00% 6580 6580 0 0.00% tinygo build -size short -o ./build/test.hex -target=nano-33-ble ./examples/apds9960/proximity/main.go
9760 9760 0 0.00% 4752 4752 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/apa102/itsybitsy-m0/main.go
8368 8368 0 0.00% 2320 2320 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/at24cx/main.go
8124 8124 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/bh1750/main.go
7432 7432 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/blinkm/main.go
70632 70632 0 0.00% 3660 3660 0 0.00% tinygo build -size short -o ./build/test.hex -target=pinetime ./examples/bma42x/main.go
64012 64012 0 0.00% 6196 6196 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/bmi160/main.go
27412 27412 0 0.00% 4780 4780 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/bmp180/main.go
64072 64072 0 0.00% 6228 6228 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/bmp280/main.go
12200 12200 0 0.00% 4812 4812 0 0.00% tinygo build -size short -o ./build/test.hex -target=trinket-m0 ./examples/bmp388/main.go
8176 8176 0 0.00% 3344 3344 0 0.00% tinygo build -size short -o ./build/test.hex -target=bluepill ./examples/ds1307/sram/main.go
4620 4620 0 0.00% 2280 2280 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/easystepper/main.go
69304 69304 0 0.00% 6968 6968 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/flash/console/spi
65644 65644 0 0.00% 9004 9004 0 0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/flash/console/qspi
7212 7212 0 0.00% 2280 2280 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/gc9a01/main.go
7872 7872 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/hcsr04/main.go
5832 5832 0 0.00% 2280 2280 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/hd44780/customchar/main.go
5784 5784 0 0.00% 2280 2280 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/hd44780/text/main.go
10528 10528 0 0.00% 4748 4748 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/hd44780i2c/main.go
14808 14808 0 0.00% 6580 6580 0 0.00% tinygo build -size short -o ./build/test.hex -target=nano-33-ble ./examples/hts221/main.go
16148 16148 0 0.00% 2360 2360 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/hub75/main.go
10152 10152 0 0.00% 6916 6916 0 0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/basic
10644 10644 0 0.00% 4868 4868 0 0.00% tinygo build -size short -o ./build/test.hex -target=xiao ./examples/ili9341/basic
29508 29508 0 0.00% 38076 38076 0 0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/pyportal_boing
10172 10172 0 0.00% 6916 6916 0 0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/scroll
10732 10732 0 0.00% 4868 4868 0 0.00% tinygo build -size short -o ./build/test.hex -target=xiao ./examples/ili9341/scroll
11732 11732 0 0.00% 4780 4780 0 0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/lis3dh/main.go
14152 14152 0 0.00% 6580 6580 0 0.00% tinygo build -size short -o ./build/test.hex -target=nano-33-ble ./examples/lps22hb/main.go
26132 26132 0 0.00% 2328 2328 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/lsm303agr/main.go
12448 12448 0 0.00% 4788 4788 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/lsm6ds3/main.go
10744 10744 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mag3110/main.go
9920 9920 0 0.00% 4780 4780 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mcp23017/main.go
10372 10372 0 0.00% 4788 4788 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mcp23017-multiple/main.go
9780 9780 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mcp3008/main.go
68656 68656 0 0.00% 6188 6188 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mcp2515/main.go
8240 8240 0 0.00% 4748 4748 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mma8653/main.go
8148 8148 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mpu6050/main.go
75640 75640 0 0.00% 7448 7448 0 0.00% tinygo build -size short -o ./build/test.hex -target=p1am-100 ./examples/p1am/main.go
12256 12256 0 0.00% 3352 3352 0 0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/pca9685/main.go
6228 6228 0 0.00% 3288 3288 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/pcd8544/setbuffer/main.go
5260 5260 0 0.00% 2280 2280 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/pcd8544/setpixel/main.go
10540 10540 0 0.00% 3328 3328 0 0.00% tinygo build -size short -o ./build/test.hex -target=feather-rp2040 ./examples/seesaw
2825 2825 0 0.00% 558 558 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino ./examples/servo
13772 13772 0 0.00% 3400 3400 0 0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/sgp30
8080 8080 0 0.00% 6788 6788 0 0.00% tinygo build -size short -o ./build/test.hex -target=pybadge ./examples/shifter/main.go
57476 57476 0 0.00% 3684 3684 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/sht3x/main.go
57532 57532 0 0.00% 3692 3692 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/sht4x/main.go
57448 57448 0 0.00% 3684 3684 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/shtc3/main.go
6688 6688 0 0.00% 2288 2288 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/ssd1306/i2c_128x32/main.go
6140 6140 0 0.00% 2280 2280 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/ssd1306/spi_128x64/main.go
5844 5844 0 0.00% 2280 2280 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/ssd1331/main.go
6788 6788 0 0.00% 2280 2280 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/st7735/main.go
6700 6700 0 0.00% 2280 2280 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/st7789/main.go
16964 16964 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/thermistor/main.go
10604 10604 0 0.00% 4540 4540 0 0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-bluefruit ./examples/tone
10064 10064 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/tm1637/main.go
10872 10872 0 0.00% 3340 3340 0 0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/touch/capacitive
9524 9524 0 0.00% 6780 6780 0 0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/touch/resistive/fourwire/main.go
12596 12596 0 0.00% 6976 6976 0 0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/touch/resistive/pyportal_touchpaint/main.go
14980 14980 0 0.00% 4748 4748 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/vl53l1x/main.go
13460 13460 0 0.00% 4748 4748 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/vl6180x/main.go
24616 24616 0 0.00% 13720 13720 0 0.00% tinygo build -size short -o ./build/test.hex -target=feather-nrf52840-sense ./examples/waveshare-epd/epd1in54/main.go
6488 6488 0 0.00% 2320 2320 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/waveshare-epd/epd2in13/main.go
6176 6176 0 0.00% 2312 2312 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/waveshare-epd/epd2in13x/main.go
6400 6400 0 0.00% 2320 2320 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/waveshare-epd/epd4in2/main.go
26140 26140 0 0.00% 16412 16412 0 0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/waveshare-epd/epd2in66b/main.go
6848 6848 0 0.00% 4780 4780 0 0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/ws2812
5764 5764 0 0.00% 9522 9522 0 0.00% tinygo build -size short -o ./build/test.bin -target=m5stamp-c3 ./examples/ws2812
62532 62532 0 0.00% 5952 5952 0 0.00% tinygo build -size short -o ./build/test.hex -target=feather-nrf52840 ./examples/is31fl3731/main.go
1581 1581 0 0.00% 598 598 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino ./examples/ws2812
1056 1056 0 0.00% 180 180 0 0.00% tinygo build -size short -o ./build/test.hex -target=digispark ./examples/ws2812
31856 31856 0 0.00% 4780 4780 0 0.00% tinygo build -size short -o ./build/test.hex -target=trinket-m0 ./examples/bme280/main.go
16436 16436 0 0.00% 4724 4724 0 0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/microphone/main.go
11080 11080 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/buzzer/main.go
12788 12788 0 0.00% 4780 4780 0 0.00% tinygo build -size short -o ./build/test.hex -target=trinket-m0 ./examples/veml6070/main.go
6752 6752 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/l293x/simple/main.go
8664 8664 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/l293x/speed/main.go
6720 6720 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/l9110x/simple/main.go
9276 9276 0 0.00% 4748 4748 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/l9110x/speed/main.go
7336 7336 0 0.00% 3316 3316 0 0.00% tinygo build -size short -o ./build/test.hex -target=nucleo-f103rb ./examples/shiftregister/main.go
7012 7012 0 0.00% 2268 2268 0 0.00% tinygo build -size short -o ./build/test.hex -target=hifive1b ./examples/ssd1351/main.go
13004 13004 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/lis2mdl/main.go
8876 8876 0 0.00% 4756 4756 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/max72xx/main.go
7276 7276 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=xiao ./examples/pcf8563/clkout/
12188 12188 0 0.00% 3304 3304 0 0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/qmi8658c/main.go
10812 10812 0 0.00% 3288 3288 0 0.00% tinygo build -size short -o ./build/test.hex -target=feather-rp2040 ./examples/pcf8591/
8744 8744 0 0.00% 4748 4748 0 0.00% tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/ina260/main.go
13196 13196 0 0.00% 4780 4780 0 0.00% tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/ina219/main.go
9308 9308 0 0.00% 5240 5240 0 0.00% tinygo build -size short -o ./build/test.hex -target=nucleo-l432kc ./examples/aht20/main.go
72756 72756 0 0.00% 10748 10748 0 0.00% tinygo build -size short -o ./build/test.hex -target=feather-m4 ./examples/sdcard/console/
61608 61608 0 0.00% 8232 8232 0 0.00% tinygo build -size short -o ./build/test.hex -target=feather-m4 ./examples/i2csoft/adt7410/
10296 10296 0 0.00% 6788 6788 0 0.00% tinygo build -size short -o ./build/test.elf -target=wioterminal ./examples/axp192/m5stack-core2-blinky/
9032 9032 0 0.00% 3276 3276 0 0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/xpt2046/main.go
13308 13308 0 0.00% 4928 4928 0 0.00% tinygo build -size short -o ./build/test.hex -target=nucleo-wl55jc ./examples/sx126x/lora_rxtx/
11260 11260 0 0.00% 4252 4252 0 0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/irremote/main.go
12000 12000 0 0.00% 3324 3324 0 0.00% tinygo build -size short -o ./build/test.hex -target=badger2040 ./examples/uc8151/main.go
10440 10440 0 0.00% 3356 3356 0 0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/scd4x/main.go
8552 8552 0 0.00% 4748 4748 0 0.00% tinygo build -size short -o ./build/test.uf2 -target=circuitplay-express ./examples/makeybutton/main.go
9664 9664 0 0.00% 4764 4764 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/ds18b20/main.go
82764 82764 0 0.00% 6576 6576 0 0.00% tinygo build -size short -o ./build/test.hex -target=nucleo-wl55jc ./examples/lora/lorawan/atcmd/
15920 15920 0 0.00% 4868 4868 0 0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/as560x/main.go
9892 9892 0 0.00% 3296 3296 0 0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/mpu6886/main.go
7808 7808 0 0.00% 4740 4740 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/ttp229/main.go
66928 66928 0 0.00% 4816 4816 0 0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/ndir/main_ndir.go
62364 62364 0 0.00% 3780 3780 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/ndir/main_ndir.go
65348 65348 0 0.00% 6252 6252 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/ndir/main_ndir.go
9320 9320 0 0.00% 3288 3288 0 0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/mpu9150/main.go
11400 11400 0 0.00% 3324 3324 0 0.00% tinygo build -size short -o ./build/test.hex -target=macropad-rp2040 ./examples/sh1106/macropad_spi
8460 8460 0 0.00% 3760 3760 0 0.00% tinygo build -size short -o ./build/test.hex -target=macropad-rp2040 ./examples/encoders/quadrature-interrupt
65888 65888 0 0.00% 4784 4784 0 0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/mcp9808/main.go
22216 22224 8 0.04% 3540 3540 0 0.00% tinygo build -size short -o ./build/test.hex -target=bluepill ./examples/ds1307/time/main.go
263712 263720 8 0.00% 46748 46748 0 0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/slideshow
69768 69784 16 0.02% 6368 6368 0 0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/ds3231/main.go
67628 67644 16 0.02% 6360 6360 0 0.00% tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/gps/i2c/main.go
68164 68180 16 0.02% 6504 6504 0 0.00% tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/gps/uart/main.go
77348 77364 16 0.02% 6336 6336 0 0.00% tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/dht/main.go
36584 36600 16 0.04% 3988 3988 0 0.00% tinygo build -size short -o ./build/test.hex -target=feather-rp2040 ./examples/pcf8523/
71368 71384 16 0.02% 6336 6336 0 0.00% tinygo build -size short -o ./build/test.hex -target=xiao ./examples/pcf8563/alarm/
70904 70920 16 0.02% 6332 6332 0 0.00% tinygo build -size short -o ./build/test.hex -target=xiao ./examples/pcf8563/time/
71328 71344 16 0.02% 6344 6344 0 0.00% tinygo build -size short -o ./build/test.hex -target=xiao ./examples/pcf8563/timer/
296180 296316 136 0.05% 13776 13776 0 0.00% tinygo build -size short -o ./build/test.hex -target=pyportal -stack-size 8kb ./examples/net/http-get/
244988 245156 168 0.07% 10476 10476 0 0.00% tinygo build -size short -o ./build/test.hex -target=nano-rp2040 -stack-size 8kb ./examples/net/websocket/dial/
85988 86164 176 0.20% 5140 5140 0 0.00% tinygo build -size short -o ./build/test.hex -target=challenger-rp2040 ./examples/net/ntpclient/
102760 102936 176 0.17% 9808 9808 0 0.00% tinygo build -size short -o ./build/test.hex -target=metro-m4-airlift -stack-size 8kb ./examples/net/socket/
111092 111268 176 0.16% 7764 7764 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino-mkrwifi1010 -stack-size 8kb ./examples/net/tlsclient/
153720 153896 176 0.11% 6540 6540 0 0.00% tinygo build -size short -o ./build/test.hex -target=nano-rp2040 -stack-size 8kb ./examples/net/mqttclient/natiu/
118864 119048 184 0.15% 7832 7832 0 0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 -stack-size 8kb ./examples/net/tcpclient/
116688 116876 188 0.16% 13124 13124 0 0.00% tinygo build -size short -o ./build/test.hex -target=wioterminal -stack-size 8kb ./examples/net/webclient/
27224 27432 208 0.76% 3632 3632 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/microbitmatrix/main.go
26944 27152 208 0.77% 5680 5680 0 0.00% tinygo build -size short -o ./build/test.hex -target=microbit-v2 ./examples/microbitmatrix/main.go
31312 31520 208 0.66% 4540 4540 0 0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/ssd1289/main.go
5329118 5330414 1296 0.00% 810370 810394 24 0.00%
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aykevl
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Updated after some refactoring (moved internal/llsync into internal/task) and added GC support (stop-the-world scanning by pausing all threads and scanning their stacks).
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aykevl
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leongross
reviewed
Nov 6, 2024
This was referenced Nov 30, 2024
aykevl
added a commit
that referenced
this pull request
Dec 1, 2024
Previously the assembler was reordering this code:
jal tinygo_scanstack
move $a0, $sp
Into this:
jal tinygo_scanstack
nop
move $a0, $sp
So it was "helpfully" inserting a branch delay slot, even though this
was already being taken care of.
Somehow this didn't break, but it does break in the WIP threading branch
(#4559) where this bug leads to
a crash.
aykevl
added a commit
that referenced
this pull request
Dec 1, 2024
Previously the assembler was reordering this code:
jal tinygo_scanstack
move $a0, $sp
Into this:
jal tinygo_scanstack
nop
move $a0, $sp
So it was "helpfully" inserting a branch delay slot, even though this
was already being taken care of.
Somehow this didn't break, but it does break in the WIP threading branch
(#4559) where this bug leads to
a crash.
aykevl
added a commit
that referenced
this pull request
Dec 1, 2024
Previously the assembler was reordering this code:
jal tinygo_scanstack
move $a0, $sp
Into this:
jal tinygo_scanstack
nop
move $a0, $sp
So it was "helpfully" inserting a branch delay slot, even though this
was already being taken care of.
Somehow this didn't break, but it does break in the WIP threading branch
(#4559) where this bug leads to
a crash.
aykevl
added a commit
that referenced
this pull request
Dec 1, 2024
Previously the assembler was reordering this code:
jal tinygo_scanstack
move $a0, $sp
Into this:
jal tinygo_scanstack
nop
move $a0, $sp
So it was "helpfully" inserting a branch delay slot, even though this
was already being taken care of.
Somehow this didn't break, but it does break in the WIP threading branch
(#4559) where this bug leads to
a crash.
aykevl
force-pushed
the
threading
branch
3 times, most recently
from
d8cf15f to
0ca0db4
Compare
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Whoa, looks like all tests are passing! |
|
@aykevl Awesome! Thanks for your hard work |
This is a small refactor to prepare GC marking for multithreaded stop-the-world.
Using a global lock may be slow, but it is certainly simple and safe. If this global lock becomes a bottleneck, we can of course look into making the GC truly support multithreading.
Move common functions to scheduler.go. They will be used both from the cooperative and from the threads scheduler.
Somewhat surprisingly, this results in smaller code than the old code with the cooperative (tasks) scheduler. Probably because the new RWMutex is also simpler.
This is not a scheduler in the runtime, instead every goroutine is mapped to a single OS thread - meaning 1:1 scheduling. While this may not perform well (or at all) for large numbers of threads, it greatly simplifies many things in the runtime. For example, blocking syscalls can be called directly instead of having to use epoll or similar. Also, we don't need to do anything special to call C code - the default stack is all we need.
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Work in progress. Many necessary parts are not yet implemented, but this gives context for PRs I want to make in the future.
See #2446 for motivation (in particular, why this focuses on Linux first) and for a list of things that need to be implemented to make multithreading work in TinyGo.