backport: bitcoin#13063 - Use shared pointer to retain wallet instance #4076
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80b4910 wallet: Use shared pointer to retain wallet instance (João Barbosa) Pull request description: Currently there are 3 places where it makes sense to retain a wallet shared pointer: - `vpwallets`; - `interfaces::Wallet` interface instance - used by the UI; - wallet RPC functions - given by `GetWalletForJSONRPCRequest`. The way it is now it is possible to have, for instance, listunspent RPC and in parallel unload the wallet (once bitcoin#13111 is merged) without blocking. Once the RPC finishes, the shared pointer will release the wallet. It is also possible to get all existing wallets without blocking because the caller keeps a local list of shared pointers. This is mostly relevant for wallet unloading. This PR replaces bitcoin#11402. Tree-SHA512: b7e37c7e1ab56626085afe2d40b1628e8d4f0dbda08df01b7e618ecd2d894ce9b83d4219443f444ba889096286eff002f163cb0a48f37063b62e9ba4ccfa6cce
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…shpay#4076) 80b4910 wallet: Use shared pointer to retain wallet instance (João Barbosa) Pull request description: Currently there are 3 places where it makes sense to retain a wallet shared pointer: - `vpwallets`; - `interfaces::Wallet` interface instance - used by the UI; - wallet RPC functions - given by `GetWalletForJSONRPCRequest`. The way it is now it is possible to have, for instance, listunspent RPC and in parallel unload the wallet (once bitcoin#13111 is merged) without blocking. Once the RPC finishes, the shared pointer will release the wallet. It is also possible to get all existing wallets without blocking because the caller keeps a local list of shared pointers. This is mostly relevant for wallet unloading. This PR replaces bitcoin#11402. Tree-SHA512: b7e37c7e1ab56626085afe2d40b1628e8d4f0dbda08df01b7e618ecd2d894ce9b83d4219443f444ba889096286eff002f163cb0a48f37063b62e9ba4ccfa6cce Co-authored-by: Wladimir J. van der Laan <[email protected]>
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