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denoland-deno/runtime/ops/os/README.md
Divy Srivastava ab7e80bde4
chore(runtime): remove dependency on sys-info crate (#16441) 
Fixes #9862 

`loadavg`

| Target family | Syscall | Description |
| ------------- | ------- | ----------- |
| Linux | `sysinfo` | - |
| Windows | - | Returns `DEFAULT_LOADAVG`. There is no concept of
loadavg on Windows |
| macOS, BSD | `getloadavg` |
https://www.freebsd.org/cgi/man.cgi?query=getloadavg |

`os_release`

| Target family | Syscall | Description |
| ------------- | ------- | ----------- |
| Linux | `/proc/sys/kernel/osrelease` | - |
| Windows |
[`RtlGetVersion`](https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/wdm/nf-wdm-rtlgetversion)
| dwMajorVersion . dwMinorVersion . dwBuildNumber |
| macOS | `sysctl([CTL_KERN, KERN_OSRELEASE])` | - |

`hostname`

| Target family | Syscall | Description |
| ------------- | ------- | ----------- |
| Unix | `gethostname(sysconf(_SC_HOST_NAME_MAX))` | - |
| Windows | `GetHostNameW` | - |

`mem_info`

| Target family | Syscall | Description |
| ------------- | ------- | ----------- |
| Linux | sysinfo | - |
| Windows | `sysinfoapi::GlobalMemoryStatusEx` | - |
| macOS | <br> <pre> sysctl([CTL_HW, HW_MEMSIZE]); <br> sysctl([CTL_VM,
VM_SWAPUSAGE]); <br> host_statistics64(mach_host_self(), HOST_VM_INFO64)
</pre> | - |
2022-11-02 12:47:00 +05:30

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os ops

loadavg

Target family Syscall Description
Linux sysinfo -
Windows - Returns DEFAULT_LOADAVG. There is no concept of loadavg on Windows
macOS, BSD getloadavg https://www.freebsd.org/cgi/man.cgi?query=getloadavg

os_release

Target family Syscall Description
Linux /proc/sys/kernel/osrelease -
Windows RtlGetVersion dwMajorVersion . dwMinorVersion . dwBuildNumber
macOS sysctl([CTL_KERN, KERN_OSRELEASE]) -

hostname

Target family Syscall Description
Unix gethostname(sysconf(_SC_HOST_NAME_MAX)) -
Windows GetHostNameW -

mem_info

Target family Syscall Description
Linux sysinfo -
Windows sysinfoapi::GlobalMemoryStatusEx -
macOS 
 sysctl([CTL_HW, HW_MEMSIZE]); 
 sysctl([CTL_VM, VM_SWAPUSAGE]); 
 host_statistics64(mach_host_self(), HOST_VM_INFO64)
-