windows: Make solana-test-validator work (#20099)

* windows: Make solana-test-validator work

The important changes to get this going on Windows:

* ledger lock needs to be done on a file instead of the directory
* IPC service needs to use the Windows pipe naming scheme
* always disable the JIT
* file logging not possible yet because we can't redirect stderr,
but this will change once env_logger fixes the pipe output target!

* Integrate review feedback

validator/src/admin_rpc_service.rs

@@ -15,7 +15,7 @@ use {
     },
     std::{
         net::SocketAddr,
-        path::Path,
+        path::{Path, PathBuf},
         sync::{Arc, RwLock},
         thread::{self, Builder},
         time::{Duration, SystemTime},
@@ -171,7 +171,7 @@ impl AdminRpc for AdminRpcImpl {
 
 // Start the Admin RPC interface
 pub fn run(ledger_path: &Path, metadata: AdminRpcRequestMetadata) {
-    let admin_rpc_path = ledger_path.join("admin.rpc");
+    let admin_rpc_path = admin_rpc_path(ledger_path);
 
     let event_loop = tokio::runtime::Builder::new_multi_thread()
         .thread_name("sol-adminrpc-el")
@@ -212,9 +212,29 @@ pub fn run(ledger_path: &Path, metadata: AdminRpcRequestMetadata) {
         .unwrap();
 }
 
+fn admin_rpc_path(ledger_path: &Path) -> PathBuf {
+    #[cfg(target_family = "windows")]
+    {
+        // More information about the wackiness of pipe names over at
+        // https://docs.microsoft.com/en-us/windows/win32/ipc/pipe-names
+        if let Some(ledger_filename) = ledger_path.file_name() {
+            PathBuf::from(format!(
+                "\\\\.\\pipe\\{}-admin.rpc",
+                ledger_filename.to_string_lossy()
+            ))
+        } else {
+            PathBuf::from("\\\\.\\pipe\\admin.rpc")
+        }
+    }
+    #[cfg(not(target_family = "windows"))]
+    {
+        ledger_path.join("admin.rpc")
+    }
+}
+
 // Connect to the Admin RPC interface
 pub async fn connect(ledger_path: &Path) -> std::result::Result<gen_client::Client, RpcError> {
-    let admin_rpc_path = ledger_path.join("admin.rpc");
+    let admin_rpc_path = admin_rpc_path(ledger_path);
     if !admin_rpc_path.exists() {
         Err(RpcError::Client(format!(
             "{} does not exist",