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//go:build !(darwin || linux) || !(amd64 || arm64 || riscv64) || sqlite3_flock || sqlite3_noshm || sqlite3_nosys
package vfs
// SupportsSharedMemory is false on platforms that do not support shared memory.
// To use [WAL without shared-memory], you need to set [EXCLUSIVE locking mode].
//
// [WAL without shared-memory]: https://sqlite.org/wal.html#noshm
// [EXCLUSIVE locking mode]: https://sqlite.org/pragma.html#pragma_locking_mode
const SupportsSharedMemory = false
// NewSharedMemory returns a shared-memory WAL-index
// backed by a file with the given path.
// It will return nil if shared-memory is not supported,
// or not appropriate for the given flags.
// Only [OPEN_MAIN_DB] databases may need a WAL-index.
// You must ensure all concurrent accesses to a database
// use shared-memory instances created with the same path.
func NewSharedMemory(path string, flags OpenFlag) SharedMemory {
return nil
}
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