diff --git a/examples/destructure.rs b/examples/destructure.rs
index 6019c225cc..13e0891317 100644
--- a/examples/destructure.rs
+++ b/examples/destructure.rs
@@ -46,10 +46,12 @@ mod app {
     }
 
     // De-structure-ing syntax
+
+    // TODO: hide priority field (or re-use priority from first resource)
     #[task(shared = [&a, &b, &c])]
     fn bar(cx: bar::Context) {
-        let bar::SharedResources { a, b, c } = cx.shared;
+        let bar::SharedResources { a, b, c, priority } = cx.shared;
 
-        hprintln!("bar: a = {}, b = {}, c = {}", a, b, c).unwrap();
+        hprintln!("bar: a = {}, b = {}, c = {}, p = {:?}", a, b, c, priority).unwrap();
     }
 }
diff --git a/macros/src/codegen/hardware_tasks.rs b/macros/src/codegen/hardware_tasks.rs
index e6192e2c00..8532176e50 100644
--- a/macros/src/codegen/hardware_tasks.rs
+++ b/macros/src/codegen/hardware_tasks.rs
@@ -72,6 +72,8 @@ pub fn codegen(
                 Context::HardwareTask(name),
                 &mut shared_needs_lt,
                 app,
+                analysis,
+                extra,
             );
 
             root.push(item);
diff --git a/macros/src/codegen/idle.rs b/macros/src/codegen/idle.rs
index 0dededa4e6..772884e811 100644
--- a/macros/src/codegen/idle.rs
+++ b/macros/src/codegen/idle.rs
@@ -35,8 +35,13 @@ pub fn codegen(
         let name = &idle.name;
 
         if !idle.args.shared_resources.is_empty() {
-            let (item, constructor) =
-                shared_resources_struct::codegen(Context::Idle, &mut shared_needs_lt, app);
+            let (item, constructor) = shared_resources_struct::codegen(
+                Context::Idle,
+                &mut shared_needs_lt,
+                app,
+                analysis,
+                extra,
+            );
 
             root_idle.push(item);
             mod_app.push(constructor);
diff --git a/macros/src/codegen/shared_resources.rs b/macros/src/codegen/shared_resources.rs
index 8c0a542a8a..a115b7c20a 100644
--- a/macros/src/codegen/shared_resources.rs
+++ b/macros/src/codegen/shared_resources.rs
@@ -106,34 +106,5 @@ pub fn codegen(
         })
     };
 
-    let manual = "Manual Codegen".to_string();
-
-    let to_gen = quote! {
-
-        #[doc = #manual]
-        impl<'a> rtic::Mutex for __rtic_internal_fooSharedResources<'a> {
-            type T = __rtic_internal_fooShared;
-            #[inline(always)]
-            fn lock<RTIC_INTERNAL_R>(
-                &mut self,
-                f: impl FnOnce(&mut __rtic_internal_fooShared) -> RTIC_INTERNAL_R,
-            ) -> RTIC_INTERNAL_R {
-                /// Priority ceiling
-                const CEILING: u8 = 1u8;
-                unsafe {
-                    rtic::export::lock(
-                        &mut __rtic_internal_fooShared::new(),
-                        self.priority(),
-                        CEILING,
-                        lm3s6965::NVIC_PRIO_BITS,
-                        f,
-                    )
-                }
-            }
-        }
-    };
-
-    mod_app.push(to_gen);
-
     (mod_app, mod_resources)
 }
diff --git a/macros/src/codegen/shared_resources_struct.rs b/macros/src/codegen/shared_resources_struct.rs
index 497a8455ea..942518b92b 100644
--- a/macros/src/codegen/shared_resources_struct.rs
+++ b/macros/src/codegen/shared_resources_struct.rs
@@ -1,11 +1,17 @@
 use proc_macro2::TokenStream as TokenStream2;
 use quote::quote;
-use rtic_syntax::{ast::App, Context};
+use rtic_syntax::{analyze::Ownership, ast::App, Context};
 
-use crate::codegen::util;
+use crate::{analyze::Analysis, check::Extra, codegen::util};
 
 /// Generate shared resources structs
-pub fn codegen(ctxt: Context, needs_lt: &mut bool, app: &App) -> (TokenStream2, TokenStream2) {
+pub fn codegen(
+    ctxt: Context,
+    needs_lt: &mut bool,
+    app: &App,
+    analysis: &Analysis,
+    extra: &Extra,
+) -> (TokenStream2, TokenStream2) {
     let mut lt = None;
 
     let resources = match ctxt {
@@ -22,6 +28,7 @@ pub fn codegen(ctxt: Context, needs_lt: &mut bool, app: &App) -> (TokenStream2,
     // Lock-all api related
     let mut fields_mut = vec![];
     let mut values_mut = vec![];
+    let mut max_ceiling = 0;
 
     for (name, access) in resources {
         let res = app.shared_resources.get(name).expect("UNREACHABLE");
@@ -75,6 +82,15 @@ pub fn codegen(ctxt: Context, needs_lt: &mut bool, app: &App) -> (TokenStream2,
 
                 ));
 
+                let ceiling = match analysis.ownerships.get(name) {
+                    Some(Ownership::Owned { priority }) => *priority,
+                    Some(Ownership::CoOwned { priority }) => *priority,
+                    Some(Ownership::Contended { ceiling }) => *ceiling,
+                    None => 0,
+                };
+
+                max_ceiling = std::cmp::max(ceiling, max_ceiling);
+
                 // continue as the value has been filled,
                 continue;
             }
@@ -151,6 +167,18 @@ pub fn codegen(ctxt: Context, needs_lt: &mut bool, app: &App) -> (TokenStream2,
     } else {
         Some(quote!(priority: &#lt rtic::export::Priority))
     };
+
+    // Generate code for the lock-all API
+    let lock_all = util::impl_mutex(
+        extra,
+        &vec![], // TODO: what cfg should go here?
+        false,   // resource proxy at top level (not in shared_resources)
+        &ident,
+        quote!(#ident_mut),
+        max_ceiling,
+        quote!(&mut #ident_mut::new()),
+    );
+
     let implementations = quote!(
         impl<#lt> #ident<#lt> {
             #[inline(always)]
@@ -176,6 +204,8 @@ pub fn codegen(ctxt: Context, needs_lt: &mut bool, app: &App) -> (TokenStream2,
                 }
             }
         }
+
+        #lock_all
     );
 
     (item, implementations)
diff --git a/macros/src/codegen/software_tasks.rs b/macros/src/codegen/software_tasks.rs
index 2008b6c98a..753394d3bd 100644
--- a/macros/src/codegen/software_tasks.rs
+++ b/macros/src/codegen/software_tasks.rs
@@ -112,6 +112,8 @@ pub fn codegen(
                 Context::SoftwareTask(name),
                 &mut shared_needs_lt,
                 app,
+                analysis,
+                extra,
             );
 
             root.push(item);
diff --git a/src/export.rs b/src/export.rs
index a124c78b3c..ea3b4718a3 100644
--- a/src/export.rs
+++ b/src/export.rs
@@ -70,6 +70,9 @@ impl Barrier {
 }
 
 // Newtype over `Cell` that forbids mutation through a shared reference
+// Debug is convenient for debugging the RTIC framework
+// but Priority should not be user-facing
+#[derive(Debug)]
 pub struct Priority {
     inner: Cell<u8>,
 }