gecko-dev/xpcom/base/nsISupportsImpl.cpp

48 строки
1.5 KiB
C++

/* -*- 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/. */
#include "nsISupportsImpl.h"
#include "mozilla/Assertions.h"
#ifdef MOZ_THREAD_SAFETY_OWNERSHIP_CHECKS_SUPPORTED
# include "nsThreadUtils.h"
#endif // MOZ_THREAD_SAFETY_OWNERSHIP_CHECKS_SUPPORTED
using namespace mozilla;
nsresult NS_FASTCALL NS_TableDrivenQI(void* aThis, REFNSIID aIID,
void** aInstancePtr,
const QITableEntry* aEntries) {
do {
if (aIID.Equals(*aEntries->iid)) {
nsISupports* r = reinterpret_cast<nsISupports*>(
reinterpret_cast<char*>(aThis) + aEntries->offset);
NS_ADDREF(r);
*aInstancePtr = r;
return NS_OK;
}
++aEntries;
} while (aEntries->iid);
*aInstancePtr = nullptr;
return NS_ERROR_NO_INTERFACE;
}
#ifdef MOZ_THREAD_SAFETY_OWNERSHIP_CHECKS_SUPPORTED
nsAutoOwningThread::nsAutoOwningThread() : mThread(GetCurrentVirtualThread()) {}
void nsAutoOwningThread::AssertCurrentThreadOwnsMe(const char* msg) const {
if (MOZ_UNLIKELY(!IsCurrentThread())) {
// `msg` is a string literal by construction.
MOZ_CRASH_UNSAFE(msg);
}
}
bool nsAutoOwningThread::IsCurrentThread() const {
return mThread == GetCurrentVirtualThread();
}
#endif