1 //===--- ThreadSafeModuleTest.cpp - Test basic use of ThreadSafeModule ----===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "llvm/ExecutionEngine/Orc/ThreadSafeModule.h" 11 #include "gtest/gtest.h" 12 13 #include <atomic> 14 #include <future> 15 #include <thread> 16 17 using namespace llvm; 18 using namespace llvm::orc; 19 20 namespace { 21 22 TEST(ThreadSafeModuleTest, ContextWhollyOwnedByOneModule) { 23 // Test that ownership of a context can be transferred to a single 24 // ThreadSafeModule. 25 ThreadSafeContext TSCtx(llvm::make_unique<LLVMContext>()); 26 ThreadSafeModule TSM(llvm::make_unique<Module>("M", *TSCtx.getContext()), 27 std::move(TSCtx)); 28 } 29 30 TEST(ThreadSafeModuleTest, ContextOwnershipSharedByTwoModules) { 31 // Test that ownership of a context can be shared between more than one 32 // ThreadSafeModule. 33 ThreadSafeContext TSCtx(llvm::make_unique<LLVMContext>()); 34 35 ThreadSafeModule TSM1(llvm::make_unique<Module>("M1", *TSCtx.getContext()), 36 TSCtx); 37 ThreadSafeModule TSM2(llvm::make_unique<Module>("M2", *TSCtx.getContext()), 38 std::move(TSCtx)); 39 } 40 41 TEST(ThreadSafeModuleTest, ContextOwnershipSharedWithClient) { 42 // Test that ownership of a context can be shared with a client-held 43 // ThreadSafeContext so that it can be re-used for new modules. 44 ThreadSafeContext TSCtx(llvm::make_unique<LLVMContext>()); 45 46 { 47 // Create and destroy a module. 48 ThreadSafeModule TSM1(llvm::make_unique<Module>("M1", *TSCtx.getContext()), 49 TSCtx); 50 } 51 52 // Verify that the context is still available for re-use. 53 ThreadSafeModule TSM2(llvm::make_unique<Module>("M2", *TSCtx.getContext()), 54 std::move(TSCtx)); 55 } 56 57 TEST(ThreadSafeModuleTest, BasicContextLockAPI) { 58 // Test that basic lock API calls work. 59 ThreadSafeContext TSCtx(llvm::make_unique<LLVMContext>()); 60 ThreadSafeModule TSM(llvm::make_unique<Module>("M", *TSCtx.getContext()), 61 TSCtx); 62 63 { auto L = TSCtx.getLock(); } 64 65 { auto L = TSM.getContextLock(); } 66 } 67 68 TEST(ThreadSafeModuleTest, ContextLockPreservesContext) { 69 // Test that the existence of a context lock preserves the attached 70 // context. 71 // The trick to verify this is a bit of a hack: We attach a Module 72 // (without the ThreadSafeModule wrapper) to the context, then verify 73 // that this Module destructs safely (which it will not if its context 74 // has been destroyed) even though all references to the context have 75 // been thrown away (apart from the lock). 76 77 ThreadSafeContext TSCtx(llvm::make_unique<LLVMContext>()); 78 auto L = TSCtx.getLock(); 79 auto &Ctx = *TSCtx.getContext(); 80 auto M = llvm::make_unique<Module>("M", Ctx); 81 TSCtx = ThreadSafeContext(); 82 } 83 84 } // end anonymous namespace 85