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Chapter 7 Process Synchronization

2. Outline. BackgroundThe Critical-Section ProblemSynchronization HardwareSemaphoresClassical Problems of SynchronizationCritical RegionsMonitorsOS SynchronizationAtomic Transactions. 3. Background. Concurrent processes (or threads) often need to share data (maintained either in shared memor

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Chapter 7 Process Synchronization

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    1. Chapter 7 Process Synchronization

    2. 2 Outline Background The Critical-Section Problem Synchronization Hardware Semaphores Classical Problems of Synchronization Critical Regions Monitors OS Synchronization Atomic Transactions

    3. 3 Background Concurrent processes (or threads) often need to share data (maintained either in shared memory or files) and resources If there is no controlled access to shared data, some processes will obtain an inconsistent view of this data The action performed by concurrent processes will then depend on the order in which their execution is interleaved Maintaining data consistency requires mechanisms to ensure the orderly execution of cooperating processes. Shared-memory solution to bounded-butter problem has a race condition on the class data count

    4. 4 Bounded Buffer

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