Merge pull request OffchainLabs#125 from OffchainLabs/missing-l1-pric…

…ing-getters

Add missing getters for L1 pricing parameters to ArbGasInfo

src/precompiles/ArbGasInfo.sol

@@ -129,4 +129,24 @@ interface ArbGasInfo {
 
     /// @notice Returns the available funds from L1 fees
     function getL1FeesAvailable() external view returns (uint256);
+
+    /// @notice Returns the equilibration units parameter for L1 price adjustment algorithm
+    /// Available in ArbOS version 20
+    function getL1PricingEquilibrationUnits() external view returns (uint256);
+
+    /// @notice Returns the last time the L1 calldata pricer was updated.
+    /// Available in ArbOS version 20
+    function getLastL1PricingUpdateTime() external view returns (uint64);
+
+    /// @notice Returns the amount of L1 calldata payments due for rewards (per the L1 reward rate)
+    /// Available in ArbOS version 20
+    function getL1PricingFundsDueForRewards() external view returns (uint256);
+
+    /// @notice Returns the amount of L1 calldata posted since the last update.
+    /// Available in ArbOS version 20
+    function getL1PricingUnitsSinceUpdate() external view returns (uint64);
+
+    /// @notice Returns the L1 pricing surplus as of the last update (may be negative).
+    /// Available in ArbOS version 20
+    function getLastL1PricingSurplus() external view returns (int256);
 }

src/precompiles/ArbOwnerPublic.sol

@@ -29,5 +29,13 @@ interface ArbOwnerPublic {
     /// @notice Get the Brotli compression level used for fast compression
     function getBrotliCompressionLevel() external view returns (uint64);
 
+    /// @notice Get the next scheduled ArbOS version upgrade and its activation timestamp.
+    /// Returns (0, 0) if no ArbOS upgrade is scheduled.
+    /// Available in ArbOS version 20.
+    function getScheduledUpgrade()
+        external
+        view
+        returns (uint64 arbosVersion, uint64 scheduledForTimestamp);
+
     event ChainOwnerRectified(address rectifiedOwner);
 }