| 摘要 |
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for suspending a call stack. One of the methods includes executing a first task on the data processing apparatus. The method includes identifying a first command to be executed by the first task, the first command being associated with commands to be executed as a group. The method includes suspending the task by freezing a call stack associated with the first task, in response to the first command. The method includes associating the task with a set of previously suspended tasks based on the first command. The method includes while the first task is suspended processing a second task on the data processing apparatus. |
