当前位置: 首页>>代码示例>>C++>>正文


C++ LockManager::unlock方法代码示例

本文整理汇总了C++中LockManager::unlock方法的典型用法代码示例。如果您正苦于以下问题:C++ LockManager::unlock方法的具体用法?C++ LockManager::unlock怎么用?C++ LockManager::unlock使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在LockManager的用法示例。


在下文中一共展示了LockManager::unlock方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: resId

TEST(LockManager, CompatibleFirstImmediateGrant) {
    LockManager lockMgr;
    const ResourceId resId(RESOURCE_GLOBAL, 0);

    MMAPV1LockerImpl locker1;
    LockRequestCombo request1(&locker1);

    MMAPV1LockerImpl locker2;
    LockRequestCombo request2(&locker2);
    request2.compatibleFirst = true;

    MMAPV1LockerImpl locker3;
    LockRequestCombo request3(&locker3);

    // Lock all in IS mode
    ASSERT(LOCK_OK == lockMgr.lock(resId, &request1, MODE_IS));
    ASSERT(LOCK_OK == lockMgr.lock(resId, &request2, MODE_IS));
    ASSERT(LOCK_OK == lockMgr.lock(resId, &request3, MODE_IS));

    // Now an exclusive mode comes, which would block
    MMAPV1LockerImpl lockerX;
    LockRequestCombo requestX(&lockerX);

    ASSERT(LOCK_WAITING == lockMgr.lock(resId, &requestX, MODE_X));

    // If an S comes, it should be granted, because of request2
    {
        MMAPV1LockerImpl lockerS;
        LockRequestCombo requestS(&lockerS);
        ASSERT(LOCK_OK == lockMgr.lock(resId, &requestS, MODE_S));
        ASSERT(lockMgr.unlock(&requestS));
    }

    // If request1 goes away, the policy should still be compatible-first, because of request2
    ASSERT(lockMgr.unlock(&request1));

    // If S comes again, it should be granted, because of request2 still there
    {
        MMAPV1LockerImpl lockerS;
        LockRequestCombo requestS(&lockerS);
        ASSERT(LOCK_OK == lockMgr.lock(resId, &requestS, MODE_S));
        ASSERT(lockMgr.unlock(&requestS));
    }

    // With request2 gone the policy should go back to FIFO, even though request3 is active
    ASSERT(lockMgr.unlock(&request2));

    {
        MMAPV1LockerImpl lockerS;
        LockRequestCombo requestS(&lockerS);
        ASSERT(LOCK_WAITING == lockMgr.lock(resId, &requestS, MODE_S));
        ASSERT(lockMgr.unlock(&requestS));
    }

    // Unlock request3 to keep the lock mgr not assert for leaked locks
    ASSERT(lockMgr.unlock(&request3));
    ASSERT(lockMgr.unlock(&requestX));
}
开发者ID:AshishSanju,项目名称:mongo,代码行数:58,代码来源:lock_manager_test.cpp


注:本文中的LockManager::unlock方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。