A maximum resource use amount for use by an application is acquired for each application, the acquired maximum resource use amount and a resource amount used by the applications are stored for each application, and when an application calls a resource use API in order to acquire or release a resource, it is determined, based on the upper limit of the used resource amount and the used resource amount, whether or not to generate the resource, and, if it is determined to generate the resource, the resource is generated and the used resource amount is updated.