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denoland-deno/runtime/ops/os/README.md
2023-11-30 22:06:01 +09:00

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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`](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 and `/proc/meminfo` | - |
| 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> | - |