Executable code for constrained computing environments

An apparatus for running dynamic code programs in an execution context that does not allow applications to use memory that is both executable and writable, the apparatus comprising:

• one or more processors;
• a non-transitory processor readable storage device including instructions executable by the one or more processors for:
• executing a virtual machine to generate first executable code in a first executable image from software code of an application, where the virtual machine includes optimizing functionality that analyzes execution of the first executable image to cache frequently used executable code and modifies executable code for efficient execution on the computer system;
• analyzing, using the virtual machine, the first executable code, when executed, to generate modified executable code;
• storing, by the computer system, the modified executable code as a second image separate from the first image;
• transforming the second image to a second executable image executable by the computer system to run the application;
• analyzing, using the virtual machine, the second executable image, when executed, to run the application to generate second modified executable code;
• storing, by the computer system, the second modified executable code as a third image separate from the first and second images;
• and
• transforming the third image to a third executable image executable by the computer system to run the application.

A non-transitory processor readable storage device including instructions executable by one or more processor for running dynamic code programs in an execution context that does not allow applications to use memory that is both executable and writable, the non-transitory processor readable storage device including instructions for:

• executing a virtual machine to generate first executable code in a first executable image from software code of an application, where the virtual machine includes optimizing functionality that analyzes execution of the first executable image to cache frequently used executable code and modifies executable code for efficient execution on the computer system;
• analyzing, using the virtual machine, the first executable code, when executed, to generate modified executable code;
• storing, by the computer system, the modified executable code as a second image separate from the first image;
• transforming the second image to a second executable image executable by the computer system to run the application;
• analyzing, using the virtual machine, the second executable image, when executed, to run the application to generate second modified executable code;
• storing, by the computer system, the second modified executable code as a third image separate from the first and second images;
• and
• transforming the third image to a third executable image executable by the computer system to run the application.