Rewrite the exchange allocator to work without an active scheduler. #4457

1 files changed, 31 insertions, 0 deletions

diff --git a/src/rt/rust_exchange_alloc.h b/src/rt/rust_exchange_alloc.h
new file mode 100644
index 00000000000..1b52929acf1
--- /dev/null
+++ b/src/rt/rust_exchange_alloc.h
@@ -0,0 +1,31 @@
+// Copyright 2013 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.
+
+#ifndef RUST_EXCHANGE_ALLOC_H
+#define RUST_EXCHANGE_ALLOC_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+class rust_exchange_alloc {
+ public:
+    void *malloc(size_t size, bool zero = true);
+    void *calloc(size_t size);
+    void *realloc(void *mem, size_t size);
+    void free(void *mem);
+};
+
+extern "C" uintptr_t *
+rust_get_exchange_count_ptr();
+
+void
+rust_check_exchange_count_on_exit();
+
+#endif