ParallelJIT.cpp revision 637f949a7fc97aa42e7360e9ed9462316b772d88
1e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer//===-- examples/ParallelJIT/ParallelJIT.cpp - Exercise threaded-safe JIT -===// 2e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// 3e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// The LLVM Compiler Infrastructure 4e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// 5fc001bbfc360ab828e5a4b0cbe4bb7db87361b85Chris Lattner// This file is distributed under the University of Illinois Open Source 6fc001bbfc360ab828e5a4b0cbe4bb7db87361b85Chris Lattner// License. See LICENSE.TXT for details. 7e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// 8e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer//===----------------------------------------------------------------------===// 9e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// 10e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// Parallel JIT 11e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// 1200b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen// This test program creates two LLVM functions then calls them from three 13e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// separate threads. It requires the pthreads library. 14e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// The three threads are created and then block waiting on a condition variable. 15e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// Once all threads are blocked on the conditional variable, the main thread 16e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// wakes them up. This complicated work is performed so that all three threads 17e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// call into the JIT at the same time (or the best possible approximation of the 18e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// same time). This test had assertion errors until I got the locking right. 19e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer 20e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer#include <pthread.h> 218b477ed579794ba6d76915d56b3f448a7dd20120Owen Anderson#include "llvm/LLVMContext.h" 22e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer#include "llvm/Module.h" 23e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer#include "llvm/Constants.h" 2456427031f60a34f8388a0facf14bea0558b8320eReid Spencer#include "llvm/DerivedTypes.h" 25e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer#include "llvm/Instructions.h" 26afebb449283ada1b44f423e698b30672606fdc54Jeff Cohen#include "llvm/ExecutionEngine/JIT.h" 27afebb449283ada1b44f423e698b30672606fdc54Jeff Cohen#include "llvm/ExecutionEngine/Interpreter.h" 28e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer#include "llvm/ExecutionEngine/GenericValue.h" 293e74d6fdd248e20a280f1dff3da9a6c689c2c4c3Evan Cheng#include "llvm/Support/TargetSelect.h" 30e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer#include <iostream> 31e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencerusing namespace llvm; 32e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer 336a98754ebbc211958297b0d20a77e8c3261c3708Chris Lattnerstatic Function* createAdd1(Module *M) { 34e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Create the add1 function entry and insert this entry into module M. The 35e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // function will have a return type of "int" and take an argument of "int". 36e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // The '0' terminates the list of argument types. 376a98754ebbc211958297b0d20a77e8c3261c3708Chris Lattner Function *Add1F = 381d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson cast<Function>(M->getOrInsertFunction("add1", 391d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Type::getInt32Ty(M->getContext()), 401d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Type::getInt32Ty(M->getContext()), 416a98754ebbc211958297b0d20a77e8c3261c3708Chris Lattner (Type *)0)); 4200b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 43e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Add a basic block to the function. As before, it automatically inserts 44e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // because of the last argument. 451d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson BasicBlock *BB = BasicBlock::Create(M->getContext(), "EntryBlock", Add1F); 4600b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 47e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Get pointers to the constant `1'. 481d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Value *One = ConstantInt::get(Type::getInt32Ty(M->getContext()), 1); 4900b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 50e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Get pointers to the integer argument of the add1 function... 51e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer assert(Add1F->arg_begin() != Add1F->arg_end()); // Make sure there's an arg 52e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer Argument *ArgX = Add1F->arg_begin(); // Get the arg 53e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer ArgX->setName("AnArg"); // Give it a nice symbolic name for fun. 5400b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 55e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Create the add instruction, inserting it into the end of BB. 567cbd8a3e92221437048b484d5ef9c0a22d0f8c58Gabor Greif Instruction *Add = BinaryOperator::CreateAdd(One, ArgX, "addresult", BB); 5700b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 58e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Create the return instruction and add it to the basic block 591d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson ReturnInst::Create(M->getContext(), Add, BB); 6000b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 6100b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen // Now, function add1 is ready. 62e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer return Add1F; 63e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer} 64e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer 656a98754ebbc211958297b0d20a77e8c3261c3708Chris Lattnerstatic Function *CreateFibFunction(Module *M) { 66e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Create the fib function and insert it into module M. This function is said 67e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // to return an int and take an int parameter. 686a98754ebbc211958297b0d20a77e8c3261c3708Chris Lattner Function *FibF = 691d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson cast<Function>(M->getOrInsertFunction("fib", 701d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Type::getInt32Ty(M->getContext()), 711d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Type::getInt32Ty(M->getContext()), 726a98754ebbc211958297b0d20a77e8c3261c3708Chris Lattner (Type *)0)); 7300b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 74e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Add a basic block to the function. 751d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson BasicBlock *BB = BasicBlock::Create(M->getContext(), "EntryBlock", FibF); 7600b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 77e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Get pointers to the constants. 781d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Value *One = ConstantInt::get(Type::getInt32Ty(M->getContext()), 1); 791d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Value *Two = ConstantInt::get(Type::getInt32Ty(M->getContext()), 2); 8000b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 81e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Get pointer to the integer argument of the add1 function... 82e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer Argument *ArgX = FibF->arg_begin(); // Get the arg. 83e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer ArgX->setName("AnArg"); // Give it a nice symbolic name for fun. 8400b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 85e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Create the true_block. 861d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson BasicBlock *RetBB = BasicBlock::Create(M->getContext(), "return", FibF); 87e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Create an exit block. 881d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson BasicBlock* RecurseBB = BasicBlock::Create(M->getContext(), "recurse", FibF); 8900b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 90e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Create the "if (arg < 2) goto exitbb" 91333c40096561218bc3597cf153c0a3895274414cOwen Anderson Value *CondInst = new ICmpInst(*BB, ICmpInst::ICMP_SLE, ArgX, Two, "cond"); 92051a950000e21935165db56695e35bade668193bGabor Greif BranchInst::Create(RetBB, RecurseBB, CondInst, BB); 9300b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 94e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Create: ret int 1 951d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson ReturnInst::Create(M->getContext(), One, RetBB); 9600b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 97e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // create fib(x-1) 987cbd8a3e92221437048b484d5ef9c0a22d0f8c58Gabor Greif Value *Sub = BinaryOperator::CreateSub(ArgX, One, "arg", RecurseBB); 99051a950000e21935165db56695e35bade668193bGabor Greif Value *CallFibX1 = CallInst::Create(FibF, Sub, "fibx1", RecurseBB); 10000b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 101e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // create fib(x-2) 1027cbd8a3e92221437048b484d5ef9c0a22d0f8c58Gabor Greif Sub = BinaryOperator::CreateSub(ArgX, Two, "arg", RecurseBB); 103051a950000e21935165db56695e35bade668193bGabor Greif Value *CallFibX2 = CallInst::Create(FibF, Sub, "fibx2", RecurseBB); 10400b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 105e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // fib(x-1)+fib(x-2) 10600b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen Value *Sum = 1077cbd8a3e92221437048b484d5ef9c0a22d0f8c58Gabor Greif BinaryOperator::CreateAdd(CallFibX1, CallFibX2, "addresult", RecurseBB); 10800b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 109e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Create the return instruction and add it to the basic block 1101d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson ReturnInst::Create(M->getContext(), Sum, RecurseBB); 11100b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 112e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer return FibF; 113e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer} 114e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer 115e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencerstruct threadParams { 116e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer ExecutionEngine* EE; 117e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer Function* F; 118e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer int value; 119e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer}; 120e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer 121e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// We block the subthreads just before they begin to execute: 122e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// we want all of them to call into the JIT at the same time, 123e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer// to verify that the locking is working correctly. 124e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencerclass WaitForThreads 125e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer{ 126e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencerpublic: 127e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer WaitForThreads() 128e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer { 129e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer n = 0; 130e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer waitFor = 0; 13100b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 132e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer int result = pthread_cond_init( &condition, NULL ); 133e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer assert( result == 0 ); 13400b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 135e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer result = pthread_mutex_init( &mutex, NULL ); 136e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer assert( result == 0 ); 137e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer } 13800b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 139e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer ~WaitForThreads() 140e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer { 141e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer int result = pthread_cond_destroy( &condition ); 142e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer assert( result == 0 ); 14300b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 144e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer result = pthread_mutex_destroy( &mutex ); 145e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer assert( result == 0 ); 146e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer } 14700b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 148e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // All threads will stop here until another thread calls releaseThreads 149e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer void block() 150e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer { 151e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer int result = pthread_mutex_lock( &mutex ); 152e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer assert( result == 0 ); 153e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer n ++; 154e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer //~ std::cout << "block() n " << n << " waitFor " << waitFor << std::endl; 15500b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 156e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer assert( waitFor == 0 || n <= waitFor ); 15700b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen if ( waitFor > 0 && n == waitFor ) 158e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer { 159e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // There are enough threads blocked that we can release all of them 160e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer std::cout << "Unblocking threads from block()" << std::endl; 161e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer unblockThreads(); 16200b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen } 16300b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen else 164e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer { 165e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // We just need to wait until someone unblocks us 166e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer result = pthread_cond_wait( &condition, &mutex ); 167e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer assert( result == 0 ); 168e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer } 16900b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 170e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // unlock the mutex before returning 171e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer result = pthread_mutex_unlock( &mutex ); 172e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer assert( result == 0 ); 173e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer } 17400b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 175e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // If there are num or more threads blocked, it will signal them all 176e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Otherwise, this thread blocks until there are enough OTHER threads 177e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // blocked 178e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer void releaseThreads( size_t num ) 179e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer { 180e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer int result = pthread_mutex_lock( &mutex ); 181e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer assert( result == 0 ); 18200b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 183e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer if ( n >= num ) { 184e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer std::cout << "Unblocking threads from releaseThreads()" << std::endl; 185e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer unblockThreads(); 18600b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen } 18700b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen else 188e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer { 189e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer waitFor = num; 190e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer pthread_cond_wait( &condition, &mutex ); 191e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer } 19200b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 193e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // unlock the mutex before returning 194e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer result = pthread_mutex_unlock( &mutex ); 195e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer assert( result == 0 ); 196e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer } 19700b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 198e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencerprivate: 199e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer void unblockThreads() 200e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer { 201e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Reset the counters to zero: this way, if any new threads 202e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // enter while threads are exiting, they will block instead 203e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // of triggering a new release of threads 204e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer n = 0; 20500b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 206e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Reset waitFor to zero: this way, if waitFor threads enter 207e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // while threads are exiting, they will block instead of 208e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // triggering a new release of threads 209e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer waitFor = 0; 210e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer 211e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer int result = pthread_cond_broadcast( &condition ); 212637f949a7fc97aa42e7360e9ed9462316b772d88Chandler Carruth (void)result; 213637f949a7fc97aa42e7360e9ed9462316b772d88Chandler Carruth assert(result == 0); 214e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer } 21500b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 216e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer size_t n; 217e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer size_t waitFor; 218e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer pthread_cond_t condition; 219e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer pthread_mutex_t mutex; 220e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer}; 221e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer 222e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencerstatic WaitForThreads synchronize; 223e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer 224e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencervoid* callFunc( void* param ) 225e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer{ 226e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer struct threadParams* p = (struct threadParams*) param; 22700b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 228e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Call the `foo' function with no arguments: 229e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer std::vector<GenericValue> Args(1); 23034bd70de3c344034b82dc9a964a6b6893efa3e82Reid Spencer Args[0].IntVal = APInt(32, p->value); 23100b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 232e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer synchronize.block(); // wait until other threads are at this point 233e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer GenericValue gv = p->EE->runFunction(p->F, Args); 23400b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 23534bd70de3c344034b82dc9a964a6b6893efa3e82Reid Spencer return (void*)(intptr_t)gv.IntVal.getZExtValue(); 236e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer} 237e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer 238da06288aeb28393b937e17dcd180658c3737a6e5Chris Lattnerint main() { 239da06288aeb28393b937e17dcd180658c3737a6e5Chris Lattner InitializeNativeTarget(); 2408b477ed579794ba6d76915d56b3f448a7dd20120Owen Anderson LLVMContext Context; 241da06288aeb28393b937e17dcd180658c3737a6e5Chris Lattner 242e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Create some module to put our function into it. 24331895e73591d3c9ceae731a1274c8f56194b9616Owen Anderson Module *M = new Module("test", Context); 24400b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 245e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer Function* add1F = createAdd1( M ); 246e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer Function* fibF = CreateFibFunction( M ); 24700b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 248e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Now we create the JIT. 2494b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner ExecutionEngine* EE = EngineBuilder(M).create(); 25000b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 251e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer //~ std::cout << "We just constructed this LLVM module:\n\n" << *M; 252e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer //~ std::cout << "\n\nRunning foo: " << std::flush; 25300b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 254e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer // Create one thread for add1 and two threads for fib 255e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer struct threadParams add1 = { EE, add1F, 1000 }; 256e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer struct threadParams fib1 = { EE, fibF, 39 }; 257e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer struct threadParams fib2 = { EE, fibF, 42 }; 25800b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 259e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer pthread_t add1Thread; 260e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer int result = pthread_create( &add1Thread, NULL, callFunc, &add1 ); 261e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer if ( result != 0 ) { 262e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer std::cerr << "Could not create thread" << std::endl; 263e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer return 1; 264e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer } 26500b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 266e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer pthread_t fibThread1; 267e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer result = pthread_create( &fibThread1, NULL, callFunc, &fib1 ); 268e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer if ( result != 0 ) { 269e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer std::cerr << "Could not create thread" << std::endl; 270e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer return 1; 271e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer } 27200b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 273e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer pthread_t fibThread2; 274e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer result = pthread_create( &fibThread2, NULL, callFunc, &fib2 ); 275e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer if ( result != 0 ) { 276e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer std::cerr << "Could not create thread" << std::endl; 277e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer return 1; 278e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer } 27900b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 280e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer synchronize.releaseThreads(3); // wait until other threads are at this point 28100b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 282e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer void* returnValue; 283e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer result = pthread_join( add1Thread, &returnValue ); 284e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer if ( result != 0 ) { 285e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer std::cerr << "Could not join thread" << std::endl; 286e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer return 1; 287e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer } 2886fb0d735f0ffdf4cd1b0a1fa04bd436586097448Reid Spencer std::cout << "Add1 returned " << intptr_t(returnValue) << std::endl; 28900b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 290e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer result = pthread_join( fibThread1, &returnValue ); 291e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer if ( result != 0 ) { 292e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer std::cerr << "Could not join thread" << std::endl; 293e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer return 1; 294e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer } 2956fb0d735f0ffdf4cd1b0a1fa04bd436586097448Reid Spencer std::cout << "Fib1 returned " << intptr_t(returnValue) << std::endl; 29600b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 297e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer result = pthread_join( fibThread2, &returnValue ); 298e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer if ( result != 0 ) { 299e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer std::cerr << "Could not join thread" << std::endl; 300e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer return 1; 301e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer } 3026fb0d735f0ffdf4cd1b0a1fa04bd436586097448Reid Spencer std::cout << "Fib2 returned " << intptr_t(returnValue) << std::endl; 30300b16889ab461b7ecef1c91ade101186b7f1fce2Jeff Cohen 304e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer return 0; 305e8cdc8b3a372015728bfbe494e4a8949fb66f6a6Reid Spencer} 306