W. J. van der Laan 1ba74123f9
Merge bitcoin/bitcoin#23004: multiprocess: add interfaces::ExternalSigner class
a032fa30d282fa69c304e0afd1f95f67c55d22e3 multiprocess: add interfaces::ExternalSigner class (Russell Yanofsky)

Pull request description:

  Add `interfaces::ExternalSigner` class to let signer objects be passed between processes and let signer code run in the original process where the object was created.

  ---

  This PR is part of the [process separation project](https://github.com/bitcoin/bitcoin/projects/10).

ACKs for top commit:
  laanwj:
    Concept and code review ACK a032fa30d282fa69c304e0afd1f95f67c55d22e3
  hebasto:
    re-ACK a032fa30d282fa69c304e0afd1f95f67c55d22e3

Tree-SHA512: 99a729fb3a64d010e142cc778a9f1f358e58345b77faaf2664de7d2277715d59df3352326e8f0f2a6628038670eaa4556310a549079fb28af6d2eeb05aea1460
2021-11-15 17:13:23 +01:00
..

Internal c++ interfaces

The following interfaces are defined here:

  • Chain — used by wallet to access blockchain and mempool state. Added in #14437, #14711, #15288, and #10973.

  • ChainClient — used by node to start & stop Chain clients. Added in #14437.

  • Node — used by GUI to start & stop bitcoin node. Added in #10244.

  • Wallet — used by GUI to access wallets. Added in #10244.

  • Handler — returned by handleEvent methods on interfaces above and used to manage lifetimes of event handlers.

  • Init — used by multiprocess code to access interfaces above on startup. Added in #19160.

  • Ipc — used by multiprocess code to access Init interface across processes. Added in #19160.

The interfaces above define boundaries between major components of bitcoin code (node, wallet, and gui), making it possible for them to run in different processes, and be tested, developed, and understood independently. These interfaces are not currently designed to be stable or to be used externally.