zig

commit 584b062a302ca10ecab4488a473440db7173bb2a (tree)
parent a8a2f2b58bd6f876258bb01b370a66c31d82f330
Author: Jim Price <shadeops@gmail.com>
Date:   Wed, 26 Jul 2023 06:19:52 -0700

Fix counting in SingleThreadedRwLock's tryLockShared (#16560)

Additionally we add RwLock to Thread.zig's list of tests
Diffstat:
M
lib/std/Thread.zig
 | 
1
+
M
lib/std/Thread/RwLock.zig
 | 
6
+++++-

2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/lib/std/Thread.zig b/lib/std/Thread.zig
@@ -1438,6 +1438,7 @@ test {
     _ = Mutex;
     _ = Semaphore;
     _ = Condition;
+    _ = RwLock;
 }
 
 fn testIncrementNotify(value: *usize, event: *ResetEvent) void {
diff --git a/lib/std/Thread/RwLock.zig b/lib/std/Thread/RwLock.zig
@@ -95,7 +95,11 @@ pub const SingleThreadedRwLock = struct {
                 rwl.shared_count = 1;
                 return true;
             },
-            .locked_exclusive, .locked_shared => return false,
+            .locked_shared => {
+                rwl.shared_count += 1;
+                return true;
+            },
+            .locked_exclusive => return false,
         }
     }