diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /js/public/friend/XrayJitInfo.h | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/public/friend/XrayJitInfo.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/js/public/friend/XrayJitInfo.h b/js/public/friend/XrayJitInfo.h new file mode 100644 index 0000000000..ddeec6a44f --- /dev/null +++ b/js/public/friend/XrayJitInfo.h @@ -0,0 +1,57 @@ +/* -*- 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/. */ + +/* + * JIT info so SpiderMonkey can efficiently work with Gecko XrayWrapper + * instances. + * + * This header is completely irrelevant to non-Gecko embedders. + */ + +#ifndef js_friend_XrayJitInfo_h +#define js_friend_XrayJitInfo_h + +#include <stddef.h> // size_t + +#include "jstypes.h" // JS_PUBLIC_API + +class JS_PUBLIC_API JSObject; + +namespace js { + +class JS_PUBLIC_API BaseProxyHandler; + +} // namespace js + +namespace JS { + +// Callbacks and other information for use by the JITs when optimizing accesses +// on xray wrappers. +struct XrayJitInfo { + // Test whether a proxy handler is a cross compartment xray with no + // security checks. + bool (*isCrossCompartmentXray)(const js::BaseProxyHandler* handler); + + // Test whether xrays in |obj|'s compartment have expandos of their own, + // instead of sharing them with Xrays from other compartments. + bool (*compartmentHasExclusiveExpandos)(JSObject* obj); + + // Proxy reserved slot used by xrays in sandboxes to store their holder + // object. + size_t xrayHolderSlot; + + // Reserved slot used by xray holders to store the xray's expando object. + size_t holderExpandoSlot; + + // Reserved slot used by xray expandos to store a custom prototype. + size_t expandoProtoSlot; +}; + +extern JS_PUBLIC_API void SetXrayJitInfo(XrayJitInfo* info); + +} // namespace JS + +#endif // js_friend_XrayJitInfo_h |