Summary

Chapter summary

• Only shared data can be shared; immutable is implicitly shared.

• __gshared provides data sharing, as in C and C++ languages.

• synchronized is for preventing other threads from intervening when a thread executes a certain piece of code.

• A class can be defined as synchronized so that only one member function can be executed on a given object at a given time. In other words, a thread can execute a member function only if no other thread is executing a member function on the same object.

• The core.atomic module enables safe data sharing that can be multiple times faster than synchronized.

• The core.sync package includes many other concurrency primitives.

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