fix(node): Implement os.cpus() (#21697)

Fixes https://github.com/denoland/deno/issues/21666

Zero added dependency and tries to match the libuv implementation

1 files changed, 90 insertions, 0 deletions

diff --git a/ext/node/ops/os/mod.rs b/ext/node/ops/os/mod.rs
new file mode 100644
index 000000000..4fadc1ff8
--- /dev/null
+++ b/ext/node/ops/os/mod.rs
@@ -0,0 +1,90 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+
+use crate::NodePermissions;
+use deno_core::error::type_error;
+use deno_core::error::AnyError;
+use deno_core::op2;
+use deno_core::OpState;
+
+mod cpus;
+mod priority;
+
+#[op2(fast)]
+pub fn op_node_os_get_priority<P>(
+  state: &mut OpState,
+  pid: u32,
+) -> Result<i32, AnyError>
+where
+  P: NodePermissions + 'static,
+{
+  {
+    let permissions = state.borrow_mut::<P>();
+    permissions.check_sys("getPriority", "node:os.getPriority()")?;
+  }
+
+  priority::get_priority(pid)
+}
+
+#[op2(fast)]
+pub fn op_node_os_set_priority<P>(
+  state: &mut OpState,
+  pid: u32,
+  priority: i32,
+) -> Result<(), AnyError>
+where
+  P: NodePermissions + 'static,
+{
+  {
+    let permissions = state.borrow_mut::<P>();
+    permissions.check_sys("setPriority", "node:os.setPriority()")?;
+  }
+
+  priority::set_priority(pid, priority)
+}
+
+#[op2]
+#[string]
+pub fn op_node_os_username<P>(state: &mut OpState) -> Result<String, AnyError>
+where
+  P: NodePermissions + 'static,
+{
+  {
+    let permissions = state.borrow_mut::<P>();
+    permissions.check_sys("userInfo", "node:os.userInfo()")?;
+  }
+
+  Ok(deno_whoami::username())
+}
+
+#[op2(fast)]
+pub fn op_geteuid<P>(state: &mut OpState) -> Result<u32, AnyError>
+where
+  P: NodePermissions + 'static,
+{
+  {
+    let permissions = state.borrow_mut::<P>();
+    permissions.check_sys("geteuid", "node:os.geteuid()")?;
+  }
+
+  #[cfg(windows)]
+  let euid = 0;
+  #[cfg(unix)]
+  // SAFETY: Call to libc geteuid.
+  let euid = unsafe { libc::geteuid() };
+
+  Ok(euid)
+}
+
+#[op2]
+#[serde]
+pub fn op_cpus<P>(state: &mut OpState) -> Result<Vec<cpus::CpuInfo>, AnyError>
+where
+  P: NodePermissions + 'static,
+{
+  {
+    let permissions = state.borrow_mut::<P>();
+    permissions.check_sys("cpus", "node:os.cpus()")?;
+  }
+
+  cpus::cpu_info().ok_or_else(|| type_error("Failed to get cpu info"))
+}