1 files changed, 59 insertions, 0 deletions
diff --git a/js/src/jit/Invalidation.h b/js/src/jit/Invalidation.h
new file mode 100644
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+++ b/js/src/jit/Invalidation.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef jit_Invalidation_h
+#define jit_Invalidation_h
+
+#include "jit/IonTypes.h"
+#include "js/AllocPolicy.h"
+#include "js/GCVector.h"
+
+namespace js {
+namespace jit {
+
+class IonScript;
+
+class RecompileInfo {
+  JSScript* script_;
+  IonCompilationId id_;
+
+ public:
+  RecompileInfo(JSScript* script, IonCompilationId id)
+      : script_(script), id_(id) {}
+
+  JSScript* script() const { return script_; }
+
+  IonScript* maybeIonScriptToInvalidate() const;
+
+  bool traceWeak(JSTracer* trc);
+
+  bool operator==(const RecompileInfo& other) const {
+    return script_ == other.script_ && id_ == other.id_;
+  }
+};
+
+// The RecompileInfoVector has a MinInlineCapacity of one so that invalidating a
+// single IonScript doesn't require an allocation.
+using RecompileInfoVector = JS::GCVector<RecompileInfo, 1, SystemAllocPolicy>;
+
+// Called from Zone::discardJitCode().
+void InvalidateAll(JS::GCContext* gcx, JS::Zone* zone);
+void FinishInvalidation(JS::GCContext* gcx, JSScript* script);
+
+// Add compilations involving |script| (outer script or inlined) to the vector.
+void AddPendingInvalidation(jit::RecompileInfoVector& invalid,
+                            JSScript* script);
+
+// Walk the stack and invalidate active Ion frames for the invalid scripts.
+void Invalidate(JSContext* cx, const RecompileInfoVector& invalid,
+                bool resetUses = true, bool cancelOffThread = true);
+void Invalidate(JSContext* cx, JSScript* script, bool resetUses = true,
+                bool cancelOffThread = true);
+
+}  // namespace jit
+}  // namespace js
+
+#endif /* jit_Invalidation_h */