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, ThreadSafeModuleMoveAssignment) { 58 // Move assignment needs to move the module before the context (opposite 59 // to the field order) to ensure that overwriting with an empty 60 // ThreadSafeModule does not destroy the context early. 61 ThreadSafeContext TSCtx(llvm::make_unique<LLVMContext>()); 62 ThreadSafeModule TSM(llvm::make_unique<Module>("M", *TSCtx.getContext()), 63 std::move(TSCtx)); 64 TSM = ThreadSafeModule(); 65 } 66 67 TEST(ThreadSafeModuleTest, BasicContextLockAPI) { 68 // Test that basic lock API calls work. 69 ThreadSafeContext TSCtx(llvm::make_unique<LLVMContext>()); 70 ThreadSafeModule TSM(llvm::make_unique<Module>("M", *TSCtx.getContext()), 71 TSCtx); 72 73 { auto L = TSCtx.getLock(); } 74 75 { auto L = TSM.getContextLock(); } 76 } 77 78 TEST(ThreadSafeModuleTest, ContextLockPreservesContext) { 79 // Test that the existence of a context lock preserves the attached 80 // context. 81 // The trick to verify this is a bit of a hack: We attach a Module 82 // (without the ThreadSafeModule wrapper) to the context, then verify 83 // that this Module destructs safely (which it will not if its context 84 // has been destroyed) even though all references to the context have 85 // been thrown away (apart from the lock). 86 87 ThreadSafeContext TSCtx(llvm::make_unique<LLVMContext>()); 88 auto L = TSCtx.getLock(); 89 auto &Ctx = *TSCtx.getContext(); 90 auto M = llvm::make_unique<Module>("M", Ctx); 91 TSCtx = ThreadSafeContext(); 92 } 93 94 } // end anonymous namespace 95