librustc: De-@mut n_null_glues in the stats

Author: pcwalton

src/librustc/middle/trans/base.rs

@@ -3247,7 +3247,7 @@ pub fn trans_crate(sess: session::Session,
         println("--- trans stats ---");
         println!("n_static_tydescs: {}", ccx.stats.n_static_tydescs.get());
         println!("n_glues_created: {}", ccx.stats.n_glues_created.get());
-        println!("n_null_glues: {}", ccx.stats.n_null_glues);
+        println!("n_null_glues: {}", ccx.stats.n_null_glues.get());
         println!("n_real_glues: {}", ccx.stats.n_real_glues);
 
         println!("n_fns: {}", ccx.stats.n_fns);

src/librustc/middle/trans/common.rs

@@ -128,7 +128,7 @@ pub struct tydesc_info {
 pub struct Stats {
     n_static_tydescs: Cell<uint>,
     n_glues_created: Cell<uint>,
-    n_null_glues: uint,
+    n_null_glues: Cell<uint>,
     n_real_glues: uint,
     n_fns: uint,
     n_monos: uint,

src/librustc/middle/trans/context.rs

@@ -213,7 +213,7 @@ impl CrateContext {
                   stats: @mut Stats {
                     n_static_tydescs: Cell::new(0u),
                     n_glues_created: Cell::new(0u),
-                    n_null_glues: 0u,
+                    n_null_glues: Cell::new(0u),
                     n_real_glues: 0u,
                     n_fns: 0u,
                     n_monos: 0u,

src/librustc/middle/trans/glue.rs

@@ -708,7 +708,11 @@ pub fn emit_tydescs(ccx: &CrateContext) {
         // calling it.
         let take_glue =
             match ti.take_glue.get() {
-              None => { ccx.stats.n_null_glues += 1u; C_null(glue_fn_ty) }
+              None => {
+                  ccx.stats.n_null_glues.set(ccx.stats.n_null_glues.get() +
+                                             1);
+                  C_null(glue_fn_ty)
+              }
               Some(v) => {
                 unsafe {
                     ccx.stats.n_real_glues += 1u;
@@ -718,7 +722,11 @@ pub fn emit_tydescs(ccx: &CrateContext) {
             };
         let drop_glue =
             match ti.drop_glue.get() {
-              None => { ccx.stats.n_null_glues += 1u; C_null(glue_fn_ty) }
+              None => {
+                  ccx.stats.n_null_glues.set(ccx.stats.n_null_glues.get() +
+                                             1u);
+                  C_null(glue_fn_ty)
+              }
               Some(v) => {
                 unsafe {
                     ccx.stats.n_real_glues += 1u;
@@ -728,7 +736,11 @@ pub fn emit_tydescs(ccx: &CrateContext) {
             };
         let free_glue =
             match ti.free_glue.get() {
-              None => { ccx.stats.n_null_glues += 1u; C_null(glue_fn_ty) }
+              None => {
+                  ccx.stats.n_null_glues.set(ccx.stats.n_null_glues.get() +
+                                             1u);
+                  C_null(glue_fn_ty)
+              }
               Some(v) => {
                 unsafe {
                     ccx.stats.n_real_glues += 1u;
@@ -738,7 +750,11 @@ pub fn emit_tydescs(ccx: &CrateContext) {
             };
         let visit_glue =
             match ti.visit_glue.get() {
-              None => { ccx.stats.n_null_glues += 1u; C_null(glue_fn_ty) }
+              None => {
+                  ccx.stats.n_null_glues.set(ccx.stats.n_null_glues.get() +
+                                             1u);
+                  C_null(glue_fn_ty)
+              }
               Some(v) => {
                 unsafe {
                     ccx.stats.n_real_glues += 1u;