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kernel: Add chainstate load options for in-memory dbs in C header

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This allows a user to run the kernel without creating on-disk files for
the block tree and chainstate indexes. This is potentially useful in
scenarios where the user needs to do some ephemeral validation
operations.

One specific use case is when linearizing the blocks on disk. The block
files store blocks out of order, so a program may utilize the library
and its header to read the blocks with one chainstate manager, and then
write them back in order, and without orphans, with another chainstate
maanger. To save disk resources and if the indexes are not required once
done, it may be beneficial to keep the indexes in memory for the
chainstate manager that writes the blocks back again.
This commit is contained in:
TheCharlatan
2024-06-22 21:08:10 +02:00
parent 070e77732c
commit a747ca1f51
4 changed files with 81 additions and 5 deletions
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18
src/kernel/bitcoinkernel.cpp
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@@ -719,6 +719,24 @@ int btck_chainstate_manager_options_set_wipe_dbs(btck_ChainstateManagerOptions*
return 0;
}
void btck_chainstate_manager_options_update_block_tree_db_in_memory(
btck_ChainstateManagerOptions* chainman_opts,
int block_tree_db_in_memory)
{
auto& opts{btck_ChainstateManagerOptions::get(chainman_opts)};
LOCK(opts.m_mutex);
opts.m_blockman_options.block_tree_db_params.memory_only = block_tree_db_in_memory == 1;
}
void btck_chainstate_manager_options_update_chainstate_db_in_memory(
btck_ChainstateManagerOptions* chainman_opts,
int chainstate_db_in_memory)
{
auto& opts{btck_ChainstateManagerOptions::get(chainman_opts)};
LOCK(opts.m_mutex);
opts.m_chainstate_load_options.coins_db_in_memory = chainstate_db_in_memory == 1;
}
btck_ChainstateManager* btck_chainstate_manager_create(
const btck_ChainstateManagerOptions* chainman_opts)
{