Doc fixes

heim-cpu/src/os/linux/freq.rs

@@ -8,5 +8,15 @@ use crate::{sys, CpuFrequency};
 ///
 /// [CPU frequencies]: ../../struct.CpuFrequency.html
 pub fn frequencies() -> impl Stream<Item = Result<CpuFrequency>> {
-    sys::frequencies().map_ok(Into::into)
+    // TODO: Looks ugly, fix this thing.
+    // Problem is that we want to doc this function
+    // no matter for what target are we building documentation,
+    // but `sys::frequencies` obviously available for Linux only.
+    cfg_if::cfg_if! {
+        if #[cfg(target_os = "linux")] {
+            sys::frequencies().map_ok(Into::into)
+        } else {
+            stream::iter(vec![])
+        }
+    }
 }

heim-net/src/os/linux/counters.rs

@@ -30,6 +30,7 @@ impl IoCountersExt for crate::IoCounters {
 ///
 /// Implemented only for Linux for now. For other platforms will return an empty stream.
 #[doc(hidden)]
+#[cfg(target_os = "linux")]
 pub fn io_counters_for_pid(pid: Pid) -> impl Stream<Item = Result<IoCounters>> {
     sys::io_counters_for_pid(pid).map_ok(Into::into)
 }

heim-process/Cargo.toml

@@ -60,7 +60,7 @@ async-std = "^1.5"
 version-sync = "0.8"
 pin-utils = "0.1.0-alpha.4"
 futures-timer = "^2.0"
-which = "~3.1"
+which = { version = "~3.1", default-features = false }
 
 [features]
 # Polyfill runtime is enabled by default only to execute examples, tests and benchmarks.

heim-process/src/os/linux/mod.rs

@@ -27,6 +27,7 @@ pub trait ProcessExt {
     /// this method returns boxed `Stream`. This behavior will change later.
     ///
     /// [IO counters]: ./struct.IoCounters.html
+    #[cfg(target_os = "linux")] // TODO: will be undocumented for other platforms
     fn net_io_counters(&self) -> BoxStream<ProcessResult<heim_net::IoCounters>>;
 }