95 lines
3.4 KiB
C++
95 lines
3.4 KiB
C++
//===--- ThreadSafeModuleTest.cpp - Test basic use of ThreadSafeModule ----===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ExecutionEngine/Orc/ThreadSafeModule.h"
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#include "gtest/gtest.h"
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#include <atomic>
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#include <future>
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#include <thread>
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using namespace llvm;
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using namespace llvm::orc;
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namespace {
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TEST(ThreadSafeModuleTest, ContextWhollyOwnedByOneModule) {
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// Test that ownership of a context can be transferred to a single
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// ThreadSafeModule.
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ThreadSafeContext TSCtx(std::make_unique<LLVMContext>());
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auto M = std::make_unique<Module>("M", *TSCtx.getContext());
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ThreadSafeModule TSM(std::move(M), std::move(TSCtx));
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}
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TEST(ThreadSafeModuleTest, ContextOwnershipSharedByTwoModules) {
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// Test that ownership of a context can be shared between more than one
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// ThreadSafeModule.
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ThreadSafeContext TSCtx(std::make_unique<LLVMContext>());
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auto M1 = std::make_unique<Module>("M1", *TSCtx.getContext());
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ThreadSafeModule TSM1(std::move(M1), TSCtx);
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auto M2 = std::make_unique<Module>("M2", *TSCtx.getContext());
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ThreadSafeModule TSM2(std::move(M2), std::move(TSCtx));
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}
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TEST(ThreadSafeModuleTest, ContextOwnershipSharedWithClient) {
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// Test that ownership of a context can be shared with a client-held
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// ThreadSafeContext so that it can be re-used for new modules.
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ThreadSafeContext TSCtx(std::make_unique<LLVMContext>());
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{
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// Create and destroy a module.
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auto M1 = std::make_unique<Module>("M1", *TSCtx.getContext());
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ThreadSafeModule TSM1(std::move(M1), TSCtx);
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}
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// Verify that the context is still available for re-use.
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auto M2 = std::make_unique<Module>("M2", *TSCtx.getContext());
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ThreadSafeModule TSM2(std::move(M2), std::move(TSCtx));
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}
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TEST(ThreadSafeModuleTest, ThreadSafeModuleMoveAssignment) {
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// Move assignment needs to move the module before the context (opposite
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// to the field order) to ensure that overwriting with an empty
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// ThreadSafeModule does not destroy the context early.
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ThreadSafeContext TSCtx(std::make_unique<LLVMContext>());
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auto M = std::make_unique<Module>("M", *TSCtx.getContext());
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ThreadSafeModule TSM(std::move(M), std::move(TSCtx));
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TSM = ThreadSafeModule();
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}
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TEST(ThreadSafeModuleTest, BasicContextLockAPI) {
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// Test that basic lock API calls work.
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ThreadSafeContext TSCtx(std::make_unique<LLVMContext>());
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auto M = std::make_unique<Module>("M", *TSCtx.getContext());
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ThreadSafeModule TSM(std::move(M), TSCtx);
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{ auto L = TSCtx.getLock(); }
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{ auto L = TSM.getContext().getLock(); }
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}
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TEST(ThreadSafeModuleTest, ContextLockPreservesContext) {
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// Test that the existence of a context lock preserves the attached
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// context.
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// The trick to verify this is a bit of a hack: We attach a Module
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// (without the ThreadSafeModule wrapper) to the context, then verify
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// that this Module destructs safely (which it will not if its context
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// has been destroyed) even though all references to the context have
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// been thrown away (apart from the lock).
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ThreadSafeContext TSCtx(std::make_unique<LLVMContext>());
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auto L = TSCtx.getLock();
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auto &Ctx = *TSCtx.getContext();
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auto M = std::make_unique<Module>("M", Ctx);
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TSCtx = ThreadSafeContext();
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}
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} // end anonymous namespace
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