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//===- CommonLinkerContext.cpp --------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lld/Common/CommonLinkerContext.h"
#include "lld/Common/ErrorHandler.h"
#include "lld/Common/Memory.h"
#include "llvm/CodeGen/CommandFlags.h"
using namespace llvm;
using namespace lld;
// Reference to the current LLD instance. This is a temporary situation, until
// we pass this context everywhere by reference, or we make it a thread_local,
// as in https://reviews.llvm.org/D108850?id=370678 where each thread can be
// associated with a LLD instance. Only then will LLD be free of global
// state.
static CommonLinkerContext *lctx;
CommonLinkerContext::CommonLinkerContext() {
lctx = this;
// Fire off the static initializations in CGF's constructor.
codegen::RegisterCodeGenFlags CGF;
}
CommonLinkerContext::~CommonLinkerContext() {
assert(lctx);
// Explicitly call the destructors since we created the objects with placement
// new in SpecificAlloc::create().
for (auto &it : instances)
it.second->~SpecificAllocBase();
lctx = nullptr;
}
CommonLinkerContext &lld::commonContext() {
assert(lctx);
return *lctx;
}
bool lld::hasContext() { return lctx != nullptr; }
void CommonLinkerContext::destroy() {
if (lctx == nullptr)
return;
delete lctx;
}
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