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Utilities/allocate: Modernize the code a bit

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Use LibCore ArgsParser to parse the parameters instead of using the raw
strings from the argv (Main::Arguments) array.

Also, use indicative names for variables in the code so the utility code
is more understandable.
This commit is contained in:
Liav A 2023-06-25 21:52:47 +03:00 • committed by Jelle Raaijmakers
parent 75ae368896
commit b74cb569ec
2 changed files with 105 additions and 53 deletions
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88
Base/usr/share/man/man1/allocate.md
View file

@ -5,36 +5,31 @@ allocate - allocate memory
## Synopsis
```**sh
$ allocate [number [unit (B/KiB/MiB)]]
$ allocate [--unit B/KiB/MiB/GiB] [--sleep-time N] [number]
```
## Description
`allocate` allocates a specific amount of virtual memory (specified in `number` and `unit`, by default 50 MiB), It also writes to each allocated page and then sleeps for 10 seconds. It is primarily used to test the kernel's memory management capabilities.
`allocate` allocates a specific amount of virtual memory. If nothing is specified
then it will allocate 100 bytes of memory.
If `number` is specified without `unit`, it will default to `number` of bytes.
It also writes to each allocated page and then sleeps for N seconds (by default 10).
It is primarily used to test the kernel's memory management capabilities.
## Arguments
## Options
* `number`: A number of `units` to allocate; the default is **50**
* `unit`: Data size unit, can be `B` (bytes), `KiB` (kibibytes) or `MiB` (mebibytes); the default is **MiB**
* `-u`, `--size-unit`: Allocation's Size Unit (Base 2 units - B, KiB, MiB or GiB)
* `-n`, `--sleep-time`: Number of seconds to sleep before freeing memory
## Examples
```sh
$ allocate 100 MiB
allocating memory (104857600 bytes)...
done in 13ms
$ allocate 500
allocating memory (500 bytes)...
done in 0ms
writing one byte to each page of allocated memory...
step took 46ms (217.391304MiB/s)
step took 32ms (312.500000MiB/s)
step took 31ms (322.580645MiB/s)
step took 55ms (181.818181MiB/s)
step took 35ms (285.714285MiB/s)
step took 40ms (250.000000MiB/s)
step took 39ms (256.410256MiB/s)
step took 52ms (192.307692MiB/s)
step took 44ms (227.272727MiB/s)
done in 426ms
sleeping for ten seconds...
done in 0ms
sleeping for 10 seconds...
0
1
2
@ -47,5 +42,58 @@ sleeping for ten seconds...
9
done.
freeing memory...
done in 119ms
done in 0ms
$ allocate 500 -u KiB
allocating memory (512000 bytes)...
done in 0ms
writing one byte to each page of allocated memory...
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
done in 4ms
sleeping for 10 seconds...
0
1
2
3
4
5
6
7
8
9
done.
freeing memory...
done in 0ms
$ allocate -u KiB -n 2 500
allocating memory (512000 bytes)...
done in 0ms
writing one byte to each page of allocated memory...
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
step took 1ms (46.875MiB/s)
done in 0ms
sleeping for 2 seconds...
0
1
done.
freeing memory...
done in 0ms
```