Implements profiler for blocked recv

components/profile_traits/ipc.rs

@@ -0,0 +1,45 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use bincode;
+use ipc_channel::ipc;
+use serde::{Deserialize, Serialize};
+use std::io::Error;
+use time;
+use time::ProfilerCategory;
+use time::ProfilerChan;
+
+pub struct IpcReceiver<T> where T: for<'de> Deserialize<'de> + Serialize {
+    ipc_receiver: ipc::IpcReceiver<T>,
+    time_profile_chan: ProfilerChan,
+}
+
+impl<T> IpcReceiver<T> where T: for<'de> Deserialize<'de> + Serialize {
+    pub fn recv(&self) -> Result<T, bincode::Error> {
+        time::profile(
+            ProfilerCategory::IpcReceiver,
+            None,
+            self.time_profile_chan.clone(),
+            move || self.ipc_receiver.recv(),
+        )
+    }
+
+    pub fn try_recv(&self) -> Result<T, bincode::Error> {
+        self.ipc_receiver.try_recv()
+    }
+
+    pub fn to_opaque(self) -> ipc::OpaqueIpcReceiver {
+        self.ipc_receiver.to_opaque()
+    }
+}
+
+pub fn channel<T>(time_profile_chan: ProfilerChan) -> Result<(ipc::IpcSender<T>, IpcReceiver<T>), Error>
+    where T: for<'de> Deserialize<'de> + Serialize, {
+    let (ipc_sender, ipc_receiver) = ipc::channel()?;
+    let profiled_ipc_receiver = IpcReceiver {
+        ipc_receiver,
+        time_profile_chan,
+    };
+    Ok((ipc_sender, profiled_ipc_receiver))
+}