HIGH SPEED SECURING/RELEASING SYSTEM FOR WORK AREA

摘要

PURPOSE:To secure and release a work area at a high speed by releasing a used resident work area and changing the number of work areas in accordance with execution of a processing program. CONSTITUTION:A work control means 2 returns the working areas to the resident working areas 6A - 6N against the release requests given to the work areas at run of a program 1 as long as the work areas are allocated from those areas 6A - 6N. Then the means 2 releases the areas 6A - 6N by means of a memory control function of an operating system OS 7. When the work areas are returned to the areas 6A - 6N, these work areas are queued into the head of a queue of areas 6A - 6N and the same work areas are allocated in many times. A resident work area increasing means 4 increases the number of work areas by the prescribed value and resets the value of an accumulating counter 3 to 0 when this counter 3 reaches the fixed value. Meanwhile a resident work area decreasing means 5 checks the areas 6A - 6N at each fixed time. Then the means 5 erases the display of application if given to a control area for the work areas and then releases the work areas by means of the memory control mechanism of the OS 7 when no display of application is confirmed. Thus it is possible to secure and release the work areas at high speed.