Module state 

Structs

MarketHeader

Market account header (v1.0 layout) — stored at the beginning of the account data. The RiskEngine state follows immediately after, accessed via raw pointer because RiskEngine is ~1.165 MB and doesn’t derive Copy.

Constants

MARKET_ACCOUNT_SIZE

Total account size (v1 layout): discriminator + header + engine

MARKET_ACCOUNT_SIZE_V0

Total account size for the legacy v0.9 layout. Used by migrate_header_v1 to validate that the account being migrated is a pre-v1 market.

MARKET_DISCRIMINATOR_V1

8-byte discriminator for v1 market accounts: 7 fixed bytes (b"percmrk") followed by a 1-byte layout version (0x01).

Functions

engine_from_account_data

Helper to get a mutable reference to the RiskEngine from raw account data.

engine_from_account_data_ref

header_from_account_data

is_v1_market

Returns true iff data starts with the v1 discriminator.

market_signer_seeds

Market PDA signer seeds: [b“market“, authority_key, &[bump]]

write_header