From 84a5115d77247d8e1b732e91c6bc18e81e3b66d7 Mon Sep 17 00:00:00 2001
From: Pekka Enberg <penberg@iki.fi>
Date: Sun, 3 Mar 2024 11:29:23 +0200
Subject: [PATCH 1/3] core: Add Windows I/O module

It's a copy of the synchronous I/O module that we use on Darwin. In the
future, let's switch to Windows IOCP API.
---
 core/io/mod.rs     |  5 +++++
 core/io/windows.rs | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)
 create mode 100644 core/io/windows.rs

diff --git a/core/io/mod.rs b/core/io/mod.rs
index c55cf7cab..a2e4bb52d 100644
--- a/core/io/mod.rs
+++ b/core/io/mod.rs
@@ -102,4 +102,9 @@ cfg_block! {
         mod darwin;
         pub use darwin::DarwinIO as PlatformIO;
     }
+
+    #[cfg(target_os = "windows")] {
+        mod windows;
+        pub use windows::WindowsIO as PlatformIO;
+    }
 }
diff --git a/core/io/windows.rs b/core/io/windows.rs
new file mode 100644
index 000000000..6178a7d38
--- /dev/null
+++ b/core/io/windows.rs
@@ -0,0 +1,46 @@
+use super::{Completion, File, IO};
+use anyhow::{Ok, Result};
+use std::sync::Arc;
+use std::cell::RefCell;
+use std::io::{Read, Seek};
+use log::trace;
+
+pub struct WindowsIO {}
+
+impl WindowsIO {
+    pub fn new() -> Result<Self> {
+        Ok(Self {})
+    }
+}
+
+impl IO for WindowsIO {
+    fn open_file(&self, path: &str) -> Result<Box<dyn File>> {
+        trace!("open_file(path = {})", path);
+        let file = std::fs::File::open(path)?;
+        Ok(Box::new(WindowsFile {
+            file: RefCell::new(file),
+        }))
+    }
+
+    fn run_once(&self) -> Result<()> {
+        Ok(())
+    }
+}
+
+pub struct WindowsFile {
+    file: RefCell<std::fs::File>,
+}
+
+impl File for WindowsFile {
+    fn pread(&self, pos: usize, c: Arc<Completion>) -> Result<()> {
+        let mut file = self.file.borrow_mut();
+        file.seek(std::io::SeekFrom::Start(pos as u64))?;
+        {
+            let mut buf = c.buf_mut();
+            let buf = buf.as_mut_slice();
+            file.read_exact(buf)?;
+        }
+        c.complete();
+        Ok(())
+    }
+}

From 59822e2c6f2e6040a3083f0f330fd35c87f3f140 Mon Sep 17 00:00:00 2001
From: Pekka Enberg <penberg@iki.fi>
Date: Sun, 3 Mar 2024 11:34:34 +0200
Subject: [PATCH 2/3] core: Don't depend on pprof on Windows

---
 core/Cargo.toml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/core/Cargo.toml b/core/Cargo.toml
index c334b7708..1bdebe8ed 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -31,9 +31,11 @@ fallible-iterator = "0.3.0"
 log = "0.4.20"
 sqlite3-parser = "0.11.0"
 
+[target.'cfg(not(target_family = "windows"))'.dev-dependencies]
+pprof = { version = "0.12.1", features = ["criterion", "flamegraph"] }
+
 [dev-dependencies]
 criterion = { version = "0.5", features = ["html_reports", "async", "async_futures"] }
-pprof = { version = "0.12.1", features = ["criterion", "flamegraph"] }
 rstest = "0.18.2"
 rusqlite = "0.29.0"
 

From 69c6b67a26f006b505ee6fd41a5447d6b1a3a158 Mon Sep 17 00:00:00 2001
From: Pekka Enberg <penberg@iki.fi>
Date: Sun, 3 Mar 2024 11:25:32 +0200
Subject: [PATCH 3/3] github: Run CI build on Windows

---
 .github/workflows/rust.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 1c2344fb1..2e908a30b 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -13,7 +13,7 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
 
     runs-on: ${{ matrix.os }}