feat: Added DB configuration option to turn on/off parallel insert and hashing

ffi/README.md

@@ -72,6 +72,7 @@ A `Config` should be provided when creating the database. A default config is pr
     FreeListCacheEntries: 40000,
     Revisions:            100,
     ReadCacheStrategy:    OnlyCacheWrites,
+    Parallel:             false,
 }
 ```
 
@@ -83,6 +84,12 @@ If set to `true`, an empty database will be created, overriding any existing fil
 
 *Default*: `false`
 
+#### `Parallel` - `bool`
+
+If set to `true`, proposals are created in parallel. This can improve performance by supporting both parallel reads and parallel hashing during proposal creation.
+
+*Default*: `false`
+
 #### `Revisions` - `uint`
 
 Indicates the number of committed roots accessible before the diff layer is compressed. Must be explicitly set if the config is specified to at least 2.

ffi/firewood.go

@@ -59,6 +59,7 @@ type Config struct {
 	FreeListCacheEntries uint
 	Revisions            uint
 	ReadCacheStrategy    CacheStrategy
+	Parallel             bool
 }
 
 // DefaultConfig returns a sensible default Config.
@@ -68,6 +69,7 @@ func DefaultConfig() *Config {
 		FreeListCacheEntries: 40_000,
 		Revisions:            100,
 		ReadCacheStrategy:    OnlyCacheWrites,
+		Parallel:             false,
 	}
 }
 
@@ -113,6 +115,7 @@ func New(filePath string, conf *Config) (*Database, error) {
 		revisions:            C.size_t(conf.Revisions),
 		strategy:             C.uint8_t(conf.ReadCacheStrategy),
 		truncate:             C.bool(conf.Truncate),
+		parallel:             C.bool(conf.Parallel),
 	}
 
 	return getDatabaseFromHandleResult(C.fwd_open_db(args))