TaiJuWu

Replace json with ujson

2

### All Submissions: - [X] Have you followed the guidelines stated in [CONTRIBUTING.md](https://github.com/pynecone-io/pynecone/blob/main/CONTRIBUTING.md) file? - [X] Have you checked to ensure there aren't any other open [Pull Requests](https://github.com/pynecone-io/pynecone/pulls ) for...

qemu debug rt-thread error

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rt-thread commit: 166c83f37 bsp: qemu-vexpress-a9 toolchain: arm-none-eabi-gcc (15:8-2019-q3-1+b1) 8.3.1 20190703 (release) [gcc-8-branch revision 273027] QEMU version: QEMU emulator version 5.2.0 (Debian 1:5.2+dfsg-11+deb11u2) 使用qemu-nographic.sh沒有問題，但是用了QEMU-dbg.sh就會報下面錯誤 ``` WARNING: Image format was not specified...

RISC-V SMP qemu AS error

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芯片: qemu riscv BSP: qemu-virt64-riscv RT-Thread v5.0.0 toolchain: riscv64-unknown-elf-gcc ```txt error message: AS build/kernel/libcpu/risc-v/virt64/context_gcc.o /home/tjwu1217/rt-thread/libcpu/risc-v/virt64/cpuport.h: Assembler messages: /home/tjwu1217/rt-thread/libcpu/risc-v/virt64/cpuport.h:53: Error: unrecognized opcode `typedef union{' /home/tjwu1217/rt-thread/libcpu/risc-v/virt64/cpuport.h:54: Error: unrecognized opcode `unsigned long slock'...

sched:rw_sem: replace mutex with spinlock

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## Summary The overhead of spinlok is less than mutext (mutex need to call enter_critical section.) After this patch, `down_write_trylock` and `down_read_trylock` can be use in interrupt context. ## Impact...

Raspberry pi 4 model B support

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Can Nuttx support raspberry 4 model B? Or anyone work on this board?

ostest RR scheduler testing

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I have a question about RR scheduler https://github.com/apache/nuttx-apps/blob/d73e6412b7d8453b25c91f324c81d88f8abbcd51/testing/ostest/roundrobin.c#L227 The comment shows thread_1 and thread_2 should start and complete at about the same time. But I did not see any assert...

feature: implement simple spinlock test

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## Summary feature: implement simple spinlock test Two threads use share variable and the variable should be same as excepted. ## Impact ostest if config spinlock ## Testing ./tools/configure.sh -l...

HDDS-10111. TestListKey: Add new test cases for OFS mode.

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## What changes were proposed in this pull request? Add new test cases for OFS mode. ## What is the link to the Apache JIRA HDDS-10111. ## How was this...

Os spinlock test

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## Summary Os spinlock test ## Impact Test for spinlock ## Testing local test

KAFKA-17023: add PCollectionsImmutableMap to ConcurrentMapBenchmark

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*More detailed description of your change, Add SingleWriteMultiReadBenchmark for ConcurrentHashMap, CopyOnWriteMap, PcollectionsImmutableMap Running Command: `./jmh-benchmarks/jmh.sh org.apache.kafka.jmh.util.SingleWriteMultiReadBenchmar` Test result: ``` Benchmark (mapSize) (writePercentage) Mode Cnt Score Error Units SingleWriteMultiReadBenchmark.ConcurrentHashMap 100 0.1...