riscv64: Support errno

[sbutz]

Partly fixes #2636.

[github-actions]

Benchmark Results

Details

Benchmark	Current: ee20673	Previous: 2e23902	Performance Ratio
startup_benchmark Build Time	91.55 s	80.34 s	1.14 ❗
startup_benchmark File Size	0.79 MB	0.80 MB	0.99 ❗
Startup Time - 1 core	0.71 s (±0.01 s)	0.75 s (±0.02 s)	0.95 ❗
Startup Time - 2 cores	0.71 s (±0.01 s)	0.74 s (±0.02 s)	0.97 ❗
Startup Time - 4 cores	0.72 s (±0.02 s)	0.74 s (±0.02 s)	0.97
multithreaded_benchmark Build Time	90.33 s	82.11 s	1.10 ❗
multithreaded_benchmark File Size	0.88 MB	0.86 MB	1.02 ❗
Multithreaded Pi Efficiency - 2 Threads	67.62 % (±6.36 %)	85.89 % (±6.61 %)	0.79 ❗
Multithreaded Pi Efficiency - 4 Threads	42.17 % (±1.88 %)	43.43 % (±2.56 %)	0.97
Multithreaded Pi Efficiency - 8 Threads	20.56 % (±1.17 %)	25.76 % (±1.53 %)	0.80 ❗
micro_benchmarks Build Time	224.26 s	80.40 s	2.79 ❗
micro_benchmarks File Size	0.88 MB	0.86 MB	1.02 ❗
Scheduling time - 1 thread	174.35 ticks (±40.41 ticks)	62.65 ticks (±4.06 ticks)	2.78 ❗
Scheduling time - 2 threads	99.41 ticks (±20.76 ticks)	34.08 ticks (±4.10 ticks)	2.92 ❗
Micro - Time for syscall (getpid)	7.79 ticks (±4.48 ticks)	3.45 ticks (±0.58 ticks)	2.26
Memcpy speed - (built_in) block size 4096	56580.31 MByte/s (±40042.10 MByte/s)	82448.38 MByte/s (±56997.13 MByte/s)	0.69
Memcpy speed - (built_in) block size 1048576	14861.87 MByte/s (±12427.47 MByte/s)	30585.98 MByte/s (±24707.84 MByte/s)	0.49
Memcpy speed - (built_in) block size 16777216	11994.14 MByte/s (±9938.27 MByte/s)	26340.06 MByte/s (±21720.96 MByte/s)	0.46
Memset speed - (built_in) block size 4096	56682.30 MByte/s (±40102.50 MByte/s)	82292.76 MByte/s (±56891.50 MByte/s)	0.69
Memset speed - (built_in) block size 1048576	15135.36 MByte/s (±12532.24 MByte/s)	31323.85 MByte/s (±25145.86 MByte/s)	0.48
Memset speed - (built_in) block size 16777216	12201.76 MByte/s (±10019.40 MByte/s)	27104.68 MByte/s (±22209.94 MByte/s)	0.45
Memcpy speed - (rust) block size 4096	52966.47 MByte/s (±38592.54 MByte/s)	74097.96 MByte/s (±51811.44 MByte/s)	0.71
Memcpy speed - (rust) block size 1048576	13804.72 MByte/s (±11287.65 MByte/s)	30361.60 MByte/s (±24602.37 MByte/s)	0.45
Memcpy speed - (rust) block size 16777216	12345.70 MByte/s (±10306.80 MByte/s)	27625.34 MByte/s (±22806.88 MByte/s)	0.45
Memset speed - (rust) block size 4096	53403.43 MByte/s (±38820.45 MByte/s)	74373.47 MByte/s (±51976.48 MByte/s)	0.72
Memset speed - (rust) block size 1048576	14083.95 MByte/s (±11412.00 MByte/s)	31110.89 MByte/s (±25033.24 MByte/s)	0.45
Memset speed - (rust) block size 16777216	12623.40 MByte/s (±10440.87 MByte/s)	28386.93 MByte/s (±23265.03 MByte/s)	0.44
alloc_benchmarks Build Time	208.38 s	74.76 s	2.79 ❗
alloc_benchmarks File Size	0.87 MB	0.87 MB	0.99 ❗
Allocations - Allocation success	91.38 %	91.31 %	1.00 ❗
Allocations - Deallocation success	100.00 %	100.00 %	1
Allocations - Pre-fail Allocations	61.60 %	61.44 %	1.00 ❗
Allocations - Average Allocation time	26016.61 Ticks (±1684.63 Ticks)	5860.58 Ticks (±98.43 Ticks)	4.44 ❗
Allocations - Average Allocation time (no fail)	26844.43 Ticks (±1959.18 Ticks)	6554.81 Ticks (±92.86 Ticks)	4.10 ❗
Allocations - Average Deallocation time	5210.97 Ticks (±1260.64 Ticks)	1805.01 Ticks (±250.35 Ticks)	2.89 ❗
mutex_benchmark Build Time	214.21 s	79.82 s	2.68 ❗
mutex_benchmark File Size	0.88 MB	0.86 MB	1.02 ❗
Mutex Stress Test Average Time per Iteration - 1 Threads	32.60 ns (±7.94 ns)	12.10 ns (±0.41 ns)	2.69 ❗
Mutex Stress Test Average Time per Iteration - 2 Threads	31.56 ns (±8.95 ns)	40.26 ns (±1.68 ns)	0.78

This comment was automatically generated by workflow using github-action-benchmark.