公开(公告)号：EP0953905A2

公开(公告)日：1999-11-03

申请号：EP99303005.5

申请日：1999-04-19

申请人： SONY CORPORATION

发明人： Wakita, Yoshiro, Intellectual Property Dpt. ,  Murata, Seiji, Intellectual Property Dpt. ,  Gamo, Tsutomu, Intellectual Property Dpt.

IPC分类号： G06F9/46

CPC分类号： G06F9/4843 ,  G06F9/461 ,  G06F9/5011 ,  G06F2209/5014 ,  G06F2209/507

摘要： A multitasking system is arranged so that task switching can be performed efficiently in a short time. Resources usable by tasks are controlled in a state of being separated into a plurality of resource groups. When one of the tasks which has become active by task switching uses one of the resources, ascertainment is made as to whether the resource group to which the resource required by the task belongs is usable. If the resource group is usable by the active task, the active task is permitted to use the resource to advance its process. If the resource group is not usable by the task, the conditions relating to the resource group to which the required resource belongs are changed so that the task can use the resource group. Thereafter, the active task is permitted to use the resource to advance its process.

摘要翻译： 安排多任务系统，以便能够在短时间内有效地执行任务切换。 由任务可用的资源被控制在被分成多个资源组的状态。 当通过任务切换变为活动的任务之一使用资源之一时，确定该任务所需资源所属的资源组是否可用。 如果资源组可用于活动任务，则允许活动任务使用资源来推进其进程。 如果资源组不可用于任务，则与所需资源所属的资源组相关的条件被更改，以便任务可以使用该资源组。 此后，允许活动任务使用资源来推进其过程。

公开(公告)号：EP0953905A3

公开(公告)日：2006-07-05

申请号：EP99303005.5

申请日：1999-04-19

申请人： SONY CORPORATION

发明人： Wakita, Yoshiro, Intellectual Property Dpt. ,  Murata, Seiji, Intellectual Property Dpt. ,  Gamo, Tsutomu, Intellectual Property Dpt.

IPC分类号： G06F9/46

CPC分类号： G06F9/4843 ,  G06F9/461 ,  G06F9/5011 ,  G06F2209/5014 ,  G06F2209/507

摘要： A multitasking system is arranged so that task switching can be performed efficiently in a short time. Resources usable by tasks are controlled in a state of being separated into a plurality of resource groups. When one of the tasks which has become active by task switching uses one of the resources, ascertainment is made as to whether the resource group to which the resource required by the task belongs is usable. If the resource group is usable by the active task, the active task is permitted to use the resource to advance its process. If the resource group is not usable by the task, the conditions relating to the resource group to which the required resource belongs are changed so that the task can use the resource group. Thereafter, the active task is permitted to use the resource to advance its process.

公开(公告)号：EP0953905B1

公开(公告)日：2008-08-27

申请号：EP99303005.5

申请日：1999-04-19

申请人： Sony Corporation

发明人： Wakita, Yoshiro, Intellectual Property Dpt. ,  Murata, Seiji, Intellectual Property Dpt. ,  Gamo, Tsutomu, Intellectual Property Dpt.

IPC分类号： G06F9/46

CPC分类号： G06F9/4843 ,  G06F9/461 ,  G06F9/5011 ,  G06F2209/5014 ,  G06F2209/507