Module gstd::exec

Utility functions related to the current execution context or program execution flow.

Functions

• block_height
  Get the current block height.
• block_timestamp
  Get the current block timestamp.
• env_vars
  Get current version of environment variables.
• exit
  Terminate the execution of a program.
• gas_available
  Get the current amount of gas available for execution.
• leave
  Break the current execution.
• program_id
  Return the identifier of the current program.
• random
  Get the random seed, along with the block number from which it is determinable by chain observers.
• reply_deposit
  Provide gas deposit from current message to handle reply message on given message id.
• reserve_gas
  Reserve the amount of gas for further usage.
• sleep_for
  Delays message execution in asynchronous way for the specified number of blocks. It works pretty much like the exec::wait_for function, but allows to continue execution after the delay in the same handler. It is worth mentioning that the program state gets persisted inside the call, and the execution resumes with potentially different state.
• system_reserve_gas
  Reserve the amount of gas for system usage.
• unreserve_gas
  Unreserve gas identified by ReservationId.
• value_available
  Get the total available value amount.
• wait
  Pause the current message handling.
• wait_for
  Same as wait, but delays handling for a specific number of blocks.
• wait_up_to
  Same as wait, but delays handling for the maximum number of blocks that can be paid for and doesn’t exceed the given duration.
• wake
  Resume previously paused message handling.
• wake_delayed
  Same as wake, but executes after the delay expressed in block count.