From 1376c5a617be5c25655d0d7cb63e3beaa5a6e026 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:20:39 +0200
Subject: Merging upstream version 1.70.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 compiler/rustc_errors/src/lock.rs | 81 +++++++++++++++++----------------------
 1 file changed, 36 insertions(+), 45 deletions(-)

(limited to 'compiler/rustc_errors/src/lock.rs')

diff --git a/compiler/rustc_errors/src/lock.rs b/compiler/rustc_errors/src/lock.rs
index a73472021..7db262abf 100644
--- a/compiler/rustc_errors/src/lock.rs
+++ b/compiler/rustc_errors/src/lock.rs
@@ -16,10 +16,12 @@ pub fn acquire_global_lock(name: &str) -> Box<dyn Any> {
     use std::ffi::CString;
     use std::io;
 
-    use winapi::shared::ntdef::HANDLE;
-    use winapi::um::handleapi::CloseHandle;
-    use winapi::um::synchapi::{CreateMutexA, ReleaseMutex, WaitForSingleObject};
-    use winapi::um::winbase::{INFINITE, WAIT_ABANDONED, WAIT_OBJECT_0};
+    use windows::{
+        core::PCSTR,
+        Win32::Foundation::{CloseHandle, HANDLE, WAIT_ABANDONED, WAIT_OBJECT_0},
+        Win32::System::Threading::{CreateMutexA, ReleaseMutex, WaitForSingleObject},
+        Win32::System::WindowsProgramming::INFINITE,
+    };
 
     struct Handle(HANDLE);
 
@@ -42,49 +44,38 @@ pub fn acquire_global_lock(name: &str) -> Box<dyn Any> {
     }
 
     let cname = CString::new(name).unwrap();
-    unsafe {
-        // Create a named mutex, with no security attributes and also not
-        // acquired when we create it.
-        //
-        // This will silently create one if it doesn't already exist, or it'll
-        // open up a handle to one if it already exists.
-        let mutex = CreateMutexA(std::ptr::null_mut(), 0, cname.as_ptr());
-        if mutex.is_null() {
-            panic!(
-                "failed to create global mutex named `{}`: {}",
-                name,
-                io::Error::last_os_error()
-            );
-        }
-        let mutex = Handle(mutex);
+    // Create a named mutex, with no security attributes and also not
+    // acquired when we create it.
+    //
+    // This will silently create one if it doesn't already exist, or it'll
+    // open up a handle to one if it already exists.
+    let mutex = unsafe { CreateMutexA(None, false, PCSTR::from_raw(cname.as_ptr().cast())) }
+        .unwrap_or_else(|_| panic!("failed to create global mutex named `{}`", name));
+    let mutex = Handle(mutex);
 
-        // Acquire the lock through `WaitForSingleObject`.
-        //
-        // A return value of `WAIT_OBJECT_0` means we successfully acquired it.
-        //
-        // A return value of `WAIT_ABANDONED` means that the previous holder of
-        // the thread exited without calling `ReleaseMutex`. This can happen,
-        // for example, when the compiler crashes or is interrupted via ctrl-c
-        // or the like. In this case, however, we are still transferred
-        // ownership of the lock so we continue.
-        //
-        // If an error happens.. well... that's surprising!
-        match WaitForSingleObject(mutex.0, INFINITE) {
-            WAIT_OBJECT_0 | WAIT_ABANDONED => {}
-            code => {
-                panic!(
-                    "WaitForSingleObject failed on global mutex named \
-                        `{}`: {} (ret={:x})",
-                    name,
-                    io::Error::last_os_error(),
-                    code
-                );
-            }
-        }
-
-        // Return a guard which will call `ReleaseMutex` when dropped.
-        Box::new(Guard(mutex))
+    // Acquire the lock through `WaitForSingleObject`.
+    //
+    // A return value of `WAIT_OBJECT_0` means we successfully acquired it.
+    //
+    // A return value of `WAIT_ABANDONED` means that the previous holder of
+    // the thread exited without calling `ReleaseMutex`. This can happen,
+    // for example, when the compiler crashes or is interrupted via ctrl-c
+    // or the like. In this case, however, we are still transferred
+    // ownership of the lock so we continue.
+    //
+    // If an error happens.. well... that's surprising!
+    match unsafe { WaitForSingleObject(mutex.0, INFINITE) } {
+        WAIT_OBJECT_0 | WAIT_ABANDONED => (),
+        err => panic!(
+            "WaitForSingleObject failed on global mutex named `{}`: {} (ret={:x})",
+            name,
+            io::Error::last_os_error(),
+            err.0
+        ),
     }
+
+    // Return a guard which will call `ReleaseMutex` when dropped.
+    Box::new(Guard(mutex))
 }
 
 #[cfg(not(windows))]
-- 
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