yeah what a great idea

.gitignore

@@ -0,0 +1,2 @@
+/target
+.idea

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
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+
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+ "instant",
+ "libc",
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+]
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Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "pythonic_global_lock"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+parking_lot = "0.11.2"

src/lib.rs

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+use parking_lot::lock_api::{MutexGuard, RawMutex};
+use parking_lot::Mutex;
+use std::cell::UnsafeCell;
+use std::ops::{Deref, DerefMut};
+
+static LOCK: Mutex<()> = Mutex::const_new(RawMutex::INIT, ());
+
+pub struct GLock<T> {
+    inner: UnsafeCell<T>,
+}
+
+impl<T> GLock<T> {
+    pub fn lock(&self) -> GLockGuard<T> {
+        let mutex_guard = LOCK.lock();
+        // SAFETY: We have the global lock
+        let value = unsafe { &mut *self.inner.get() };
+        GLockGuard { value, mutex_guard }
+    }
+
+    pub fn get_mut(&mut self) -> &mut T {
+        self.inner.get_mut()
+    }
+
+    pub fn into_inner(self) -> T {
+        self.inner.into_inner()
+    }
+}
+
+struct GLockGuard<'a, T> {
+    value: &'a mut T,
+    mutex_guard: MutexGuard<'a, parking_lot::RawMutex, ()>,
+}
+
+impl<'a, T> Deref for GLockGuard<'a, T> {
+    type Target = T;
+
+    fn deref(&self) -> &Self::Target {
+        self.value
+    }
+}
+
+impl<'a, T> DerefMut for GLockGuard<'_, T> {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        self.value
+    }
+}