Rename ports/winit package to servoshell (#30163)

* rename winit package to servoshell

* revert previous changes and rename only package

ports/servoshell/platform/macos/Info.plist

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>NSSupportsAutomaticGraphicsSwitching</key>
+	<true/>
+	<key>CFBundleDisplayName</key>
+	<string>Servo</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleName</key>
+	<string>Servo</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright &#169; 2016 The Servo Authors</string>
+	<key>CFBundleVersion</key>
+	<string>0.0.1</string>
+	<key>CFBundleIdentifier</key>
+	<string>org.servo.servo</string>
+</dict>
+</plist>
+

ports/servoshell/platform/macos/count_threads.c

@@ -0,0 +1,13 @@
+/* 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 https://mozilla.org/MPL/2.0/. */
+
+#include <mach/mach.h>
+
+int macos_count_running_threads() {
+  task_t task = current_task();
+  thread_act_array_t threads;
+  mach_msg_type_number_t tcnt;
+  task_threads(task, &threads, &tcnt);
+  return tcnt;
+}

ports/servoshell/platform/macos/mod.rs

@@ -0,0 +1,46 @@
+/* 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 https://mozilla.org/MPL/2.0/. */
+
+use std::ptr;
+use std::thread;
+use std::time::Duration;
+
+pub fn deinit(clean_shutdown: bool) {
+    // An unfortunate hack to make sure the linker's dead code stripping doesn't strip our
+    // `Info.plist`.
+    unsafe {
+        ptr::read_volatile(&INFO_PLIST[0]);
+    }
+
+    let thread_count = unsafe { macos_count_running_threads() };
+
+    if thread_count != 1 {
+        println!(
+            "{} threads are still running after shutdown (bad).",
+            thread_count
+        );
+        if clean_shutdown {
+            println!("Waiting until all threads have shutdown");
+            loop {
+                let thread_count = unsafe { macos_count_running_threads() };
+                if thread_count == 1 {
+                    break;
+                }
+                thread::sleep(Duration::from_millis(1000));
+                println!("{} threads are still running.", thread_count);
+            }
+        }
+    } else {
+        println!("All threads have shutdown (good).");
+    }
+}
+
+#[link_section = "__TEXT,__info_plist"]
+#[no_mangle]
+pub static INFO_PLIST: [u8; 619] = *include_bytes!("Info.plist");
+
+#[link(name = "count_threads")]
+extern "C" {
+    fn macos_count_running_threads() -> i32;
+}