Information device, computer-readable storage medium for computer program, and method for sharing memory

A non-transitory computer-readable storage medium storing thereon a computer program executed by a hardware processor in an information device executing a plurality of processes using a memory as a work area in parallel with one another, the computer program, when executed by the hardware processor, causes the information device to:

• receive a request of at least one of a plurality of second processes, wherein the first process and the plurality of second processes are executed in parallel and a type of the plurality of second processes is different from a type of the first process;
• obtain a first size of a first memory region in the common memory region, wherein the first memory region is requested by a present second process included in the plurality of second processes;
• predict a second size of a second memory region in the common memory region, wherein the second size is a maximum request size that a next second process to be executed directly after the present second process requires in the second memory region;
• determine which of the first size and the second size is larger;
• and
• secure a memory region having a predetermined size that is larger than the larger of the first size and the second size determined by the hardware processor for the plurality of second processes before executing the next second process, wherein
• the plurality of second processes are two processes which involve using memory regions having different sizes, and
• the computer program further causes the information device to:
• predict whether the size of the memory region to be required next is a third size or a fourth size larger than the third size;
• estimate, when the present second process is executed, and when the hardware processor receives the request of one of a plurality of second processes, a required time for the present second process;
• and
• if the required time estimated is equal to or longer than a preset time, determine that the size of the memory region to be required next is the fourth size, and
• if the required time estimated is shorter than the preset time, determine that the size of the memory region to be required next is the third size.

A method for sharing a memory comprising a common memory region to execute a plurality of processes comprising a first process and a plurality of second processes in parallel with one another, the method comprising:

• receiving a request of at least one of the plurality of second processes, the first process and the plurality of second processes are executed in parallel and a type of the plurality of second processes is different from a type of the first process;
• obtaining a first size of a first memory region in the common memory region, the first memory region is requested by a present second process included in the plurality of second processes;
• predicting a second size of a second memory region in the common memory region, the second size is a maximum request size that a next second process to be executed directly after the present second process requires in the second memory region;
• determining which of the first size and the second size is larger;
• and
• securing a memory region having a predetermined size that is larger than the larger of the first size and the second size determined by the hardware processor for the plurality of second processes before executing the next second process, wherein
• the plurality of second processes are two processes which involve using memory regions having different sizes, and
• the method further comprises:
• predicting whether the size of the memory region to be required next is a third size or a fourth size larger than the third size;
• estimating, when the present second process is executed, and when the hardware processor receives the request of one of a plurality of second processes, a required time for the present second process;
• and
• if the required time estimated is equal to or longer than a preset time, determining that the size of the memory region to be required next is the fourth size, and
• if the required time estimated is shorter than the preset time, determining that the size of the memory region to be required next is the third size.

An information device executing a plurality of processes using a memory as a work area in parallel with one another, the information device comprising:

• the memory having a common memory region previously allocated for a first process;
• and
• a hardware processor that:
• receives a request of at least one of a plurality of second processes, wherein the first process and the plurality of second processes are executed in parallel and a type of the plurality of second processes is different from a type of the first process;
• obtains a first size of a first memory region in the common memory region, wherein the first memory region is requested by a present second process included in the plurality of second processes;
• predicts a second size of a second memory region in the common memory region, wherein the second size is a maximum request size that a next second process to be executed directly after the present second process requires in the second memory region;
• determines which of the first size and the second size is larger;
• and
• secures a memory region having a predetermined size that is larger than the larger of the first size and the second size determined by the hardware processor for the plurality of second processes before the hardware processor executes the next second process, wherein
• the plurality of second processes are two processes which involve using memory regions having different sizes, and
• the hardware processor further:
• predicts whether the size of the memory region to be required next is a third size or a fourth size larger than the third size;
• estimates, when the first process is being executed, when the present second process is executed, and when the hardware processor receives the request of one of a plurality of second processes, a finish time of the first process and a finish time of the present second process;
• and
• if the finish time of the present second process estimated is earlier than the finish time of the first process estimated, determines that the size of the memory region to be required next is the fourth size, and
• if the finish time of the present second process estimated is later than the finish time of the first process estimated, determines that the size of the memory region to be required next is the third size.

A non-transitory computer-readable storage medium storing thereon a computer program executed by a hardware processor in an information device executing a plurality of processes using a memory as a work area in parallel with one another, the computer program, when executed by the hardware processor, causes the information device to:

• receive a request of at least one of a plurality of second processes, wherein the first process and the plurality of second processes are executed in parallel and a type of the plurality of second processes is different from a type of the first process;
• obtain a first size of a first memory region in the common memory region, wherein the first memory region is requested by a present second process included in the plurality of second processes;
• predict a second size of a second memory region in the common memory region, wherein the second size is a maximum request size that a next second process to be executed directly after the present second process requires in the second memory region;
• determine which of the first size and the second size is larger;
• and
• secure a memory region having a predetermined size that is larger than the larger of the first size and the second size determined by the hardware processor for the plurality of second processes before executing the next second process, wherein
• the plurality of second processes are two processes which involve using memory regions having different sizes, and
• the computer program, when executed by the hardware processor, cause the information device to further:
• predict whether the size of the memory region to be required next is a third size or a fourth size larger than the third size;
• estimate, when the first process is being executed, when the present second process is executed, and when the hardware processor receives the request of one of a plurality of second processes, a finish time of the first process and a finish time of the present second process;
• and
• if the finish time of the present second process estimated is earlier than the finish time of the first process estimated, determine that the size of the memory region to be required next is the fourth size, and
• if the finish time of the present second process estimated is later than the finish time of the first process estimated, determine that the size of the memory region to be required next is the third size.

A method for sharing a memory comprising a common memory region to execute a plurality of processes comprising a first process and a plurality of second processes in parallel with one another, the method comprising:

• receiving a request of at least one of the plurality of second processes, the first process and the plurality of second processes are executed in parallel and a type of the plurality of second processes is different from a type of the first process;
• obtaining a first size of a first memory region in the common memory region, the first memory region is requested by a present second process included in the plurality of second processes;
• predicting a second size of a second memory region in the common memory region, the second size is a maximum request size that a next second process to be executed directly after the present second process requires in the second memory region;
• determining which of the first size and the second size is larger;
• and
• securing a memory region having a predetermined size that is larger than the larger of the first size and the second size determined by the hardware processor for the plurality of second processes before executing the next second process, wherein
• the plurality of second processes are two processes which involve using memory regions having different sizes, and
• the method further comprises:
• predicting whether the size of the memory region to be required next is a third size or a fourth size larger than the third size;
• estimating, when the first process is being executed, when the present second process is executed, and when the hardware processor receives the request of one of a plurality of second processes, a finish time of the first process and a finish time of the present second process;
• and
• if the finish time of the present second process estimated is earlier than the finish time of the first process estimated, determining that the size of the memory region to be required next is the fourth size, and
• if the finish time of the present second process estimated is later than the finish time of the first process estimated, determining that the size of the memory region to be required next is the third size.