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-rw-r--r--ctr-std/src/sys/wasm/rwlock.rs82
1 files changed, 0 insertions, 82 deletions
diff --git a/ctr-std/src/sys/wasm/rwlock.rs b/ctr-std/src/sys/wasm/rwlock.rs
deleted file mode 100644
index 6516010..0000000
--- a/ctr-std/src/sys/wasm/rwlock.rs
+++ /dev/null
@@ -1,82 +0,0 @@
-// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// 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. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use cell::UnsafeCell;
-
-pub struct RWLock {
- mode: UnsafeCell<isize>,
-}
-
-unsafe impl Send for RWLock {}
-unsafe impl Sync for RWLock {} // no threads on wasm
-
-impl RWLock {
- pub const fn new() -> RWLock {
- RWLock {
- mode: UnsafeCell::new(0),
- }
- }
-
- #[inline]
- pub unsafe fn read(&self) {
- let mode = self.mode.get();
- if *mode >= 0 {
- *mode += 1;
- } else {
- rtabort!("rwlock locked for writing");
- }
- }
-
- #[inline]
- pub unsafe fn try_read(&self) -> bool {
- let mode = self.mode.get();
- if *mode >= 0 {
- *mode += 1;
- true
- } else {
- false
- }
- }
-
- #[inline]
- pub unsafe fn write(&self) {
- let mode = self.mode.get();
- if *mode == 0 {
- *mode = -1;
- } else {
- rtabort!("rwlock locked for reading")
- }
- }
-
- #[inline]
- pub unsafe fn try_write(&self) -> bool {
- let mode = self.mode.get();
- if *mode == 0 {
- *mode = -1;
- true
- } else {
- false
- }
- }
-
- #[inline]
- pub unsafe fn read_unlock(&self) {
- *self.mode.get() -= 1;
- }
-
- #[inline]
- pub unsafe fn write_unlock(&self) {
- *self.mode.get() += 1;
- }
-
- #[inline]
- pub unsafe fn destroy(&self) {
- }
-}