xpcom/ds/nsStaticAtom.h

Thu, 22 Jan 2015 13:21:57 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Thu, 22 Jan 2015 13:21:57 +0100
branch
TOR_BUG_9701
changeset 15
b8a032363ba2
permissions
-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

michael@0 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0 2 /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0 3 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 5
michael@0 6 #ifndef nsStaticAtom_h__
michael@0 7 #define nsStaticAtom_h__
michael@0 8
michael@0 9 #include "nsIAtom.h"
michael@0 10 #include "nsStringBuffer.h"
michael@0 11 #include "prlog.h"
michael@0 12
michael@0 13 typedef char16_t nsStaticAtomStringType;
michael@0 14
michael@0 15 #define NS_STATIC_ATOM(buffer_name, atom_ptr) { (nsStringBuffer*) &buffer_name, atom_ptr }
michael@0 16 #define NS_STATIC_ATOM_BUFFER(buffer_name, str_data) static nsFakeStringBuffer< sizeof(str_data) > buffer_name = { 1, sizeof(str_data) * sizeof(nsStaticAtomStringType), MOZ_UTF16(str_data) };
michael@0 17
michael@0 18 /**
michael@0 19 * Holds data used to initialize large number of atoms during startup. Use
michael@0 20 * the above macros to initialize these structs. They should never be accessed
michael@0 21 * directly other than from AtomTable.cpp
michael@0 22 */
michael@0 23 struct nsStaticAtom {
michael@0 24 nsStringBuffer* mStringBuffer;
michael@0 25 nsIAtom ** mAtom;
michael@0 26 };
michael@0 27
michael@0 28 /**
michael@0 29 * This is a struct with the same binary layout as a nsStringBuffer.
michael@0 30 */
michael@0 31 template <uint32_t size>
michael@0 32 struct nsFakeStringBuffer {
michael@0 33 int32_t mRefCnt;
michael@0 34 uint32_t mSize;
michael@0 35 nsStaticAtomStringType mStringData[size];
michael@0 36 };
michael@0 37
michael@0 38 // Register an array of static atoms with the atom table
michael@0 39 template<uint32_t N>
michael@0 40 nsresult
michael@0 41 NS_RegisterStaticAtoms(const nsStaticAtom (&atoms)[N])
michael@0 42 {
michael@0 43 extern nsresult RegisterStaticAtoms(const nsStaticAtom*, uint32_t aAtomCount);
michael@0 44 return RegisterStaticAtoms(atoms, N);
michael@0 45 }
michael@0 46
michael@0 47 #endif

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