| // Copyright (c) 2011 The LevelDB Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. See the AUTHORS file for names of contributors. |
| |
| #include "leveldb/env.h" |
| |
| #include "port/port.h" |
| #include "util/testharness.h" |
| |
| namespace leveldb { |
| |
| static const int kDelayMicros = 100000; |
| |
| class EnvPosixTest { |
| private: |
| port::Mutex mu_; |
| std::string events_; |
| |
| public: |
| Env* env_; |
| EnvPosixTest() : env_(Env::Default()) { } |
| }; |
| |
| static void SetBool(void* ptr) { |
| reinterpret_cast<port::AtomicPointer*>(ptr)->NoBarrier_Store(ptr); |
| } |
| |
| TEST(EnvPosixTest, RunImmediately) { |
| port::AtomicPointer called (NULL); |
| env_->Schedule(&SetBool, &called); |
| Env::Default()->SleepForMicroseconds(kDelayMicros); |
| ASSERT_TRUE(called.NoBarrier_Load() != NULL); |
| } |
| |
| TEST(EnvPosixTest, RunMany) { |
| port::AtomicPointer last_id (NULL); |
| |
| struct CB { |
| port::AtomicPointer* last_id_ptr; // Pointer to shared slot |
| uintptr_t id; // Order# for the execution of this callback |
| |
| CB(port::AtomicPointer* p, int i) : last_id_ptr(p), id(i) { } |
| |
| static void Run(void* v) { |
| CB* cb = reinterpret_cast<CB*>(v); |
| void* cur = cb->last_id_ptr->NoBarrier_Load(); |
| ASSERT_EQ(cb->id-1, reinterpret_cast<uintptr_t>(cur)); |
| cb->last_id_ptr->Release_Store(reinterpret_cast<void*>(cb->id)); |
| } |
| }; |
| |
| // Schedule in different order than start time |
| CB cb1(&last_id, 1); |
| CB cb2(&last_id, 2); |
| CB cb3(&last_id, 3); |
| CB cb4(&last_id, 4); |
| env_->Schedule(&CB::Run, &cb1); |
| env_->Schedule(&CB::Run, &cb2); |
| env_->Schedule(&CB::Run, &cb3); |
| env_->Schedule(&CB::Run, &cb4); |
| |
| Env::Default()->SleepForMicroseconds(kDelayMicros); |
| void* cur = last_id.Acquire_Load(); |
| ASSERT_EQ(4, reinterpret_cast<uintptr_t>(cur)); |
| } |
| |
| } // namespace leveldb |
| |
| int main(int argc, char** argv) { |
| return leveldb::test::RunAllTests(); |
| } |