1 files changed, 23 insertions, 0 deletions
diff --git a/third_party/rust/winapi/src/um/fibersapi.rs b/third_party/rust/winapi/src/um/fibersapi.rs
new file mode 100644
index 0000000000..c2e3b08ff3
--- /dev/null
+++ b/third_party/rust/winapi/src/um/fibersapi.rs
@@ -0,0 +1,23 @@
+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
+// All files in the project carrying such notice may not be copied, modified, or distributed
+// except according to those terms.
+use shared::minwindef::{BOOL, DWORD};
+use um::winnt::{PFLS_CALLBACK_FUNCTION, PVOID};
+extern "system" {
+    pub fn FlsAlloc(
+        lpCallback: PFLS_CALLBACK_FUNCTION,
+    ) -> DWORD;
+    pub fn FlsGetValue(
+        dwFlsIndex: DWORD,
+    ) -> PVOID;
+    pub fn FlsSetValue(
+        dwFlsIndex: DWORD,
+        lpFlsData: PVOID,
+    ) -> BOOL;
+    pub fn FlsFree(
+        dwFlsIndex: DWORD,
+    ) -> BOOL;
+    pub fn IsThreadAFiber() -> BOOL;
+}