Efficient just-in-time compilation
Systems and methods for just-in-time (JIT) code compilation by a computer system. An example method may comprise identifying a defined pattern in a byte stream, evaluating a conditional expression associated with the pattern, and compiling the byte stream into a native code, while excluding, in view of the evaluating, a portion of byte stream associated with the pattern.
1. A method, comprising:
identifying, by a processor, a defined pattern in a byte stream derived from a high level programming language module;
evaluating a conditional expression associated with the defined pattern, wherein the conditional expression compares a system priority level to a value representing an execution priority level of a section of code associated with the conditional expression; and
compiling the byte stream into a native code, while excluding from compiling, in view of the comparing, a byte stream of the section of code associated with the defined pattern.
2. The method of claim 1 , wherein the byte stream is provided by Java™ bytecode.
3. The method of claim 1 , further comprising storing the native code in a memory for subsequent execution by the processor.
4. The method of claim 1 , wherein the defined pattern comprises an opcode corresponding to a high-level programming language construct.
5. The method of claim 4 , wherein the high-level programming language construct comprises a pre-defined keyword.
6. The method of claim 1 , wherein the compiling is performed at run time.
7. The method of claim 1 , wherein the conditional expression comprises an identifier of a system variable, an operator, and a constant value.
8. The method of claim 1 , wherein the byte stream is provided by one of: a file or a network socket.
9. A non-transitory computer-readable storage medium comprising executable instructions that, when executed by a processor, cause the processor to:
identify, by the processor, a defined pattern in a byte stream derived from a high level programming language module;
evaluate a conditional expression associated with the defined pattern, wherein the conditional expression compares a system priority level to a value representing an execution priority level of a section of code associated with the conditional expression; and
compile the byte stream into a native code, while excluding from compiling, in view of the comparing, a byte stream of the section of code associated with the defined pattern.
10. The non-transitory computer-readable storage medium of claim 9 , wherein the byte stream is provided by Java bytecode.
11. The non-transitory computer-readable storage medium of claim 9 , further comprising executable instructions that cause the processor to store the native code in a memory for subsequent execution.
12. The non-transitory computer-readable storage medium of claim 9 , wherein the defined pattern comprises an opcode corresponding to a high-level language construct.
13. The non-transitory computer-readable storage medium of claim 12 , wherein the high-level programming language construct comprises a pre-defined keyword.
14. The non-transitory computer-readable storage medium of claim 9 , wherein the conditional expression comprises an identifier of a system variable, an operator, and a constant value.
15. A system, comprising:
a memory; and
a processor, operatively coupled to the memory, to:
identify a defined pattern in a byte stream derived from a high level programming language module;
evaluate a conditional expression associated with the defined pattern, wherein the conditional expression compares a system priority level to a value representing an execution priority level of a section of code associated with the conditional expression; and
compile the byte stream into a native code, while excluding from compiling, in view of the comparing, a byte stream of the section of code associated with the defined pattern.
16. The system of claim 15 , wherein the byte stream is provided by Java bytecode.
17. The system of claim 15 , wherein the processor is further to store the native code in a memory for subsequent execution.
18. The system of claim 15 , wherein the defined pattern comprises an opcode corresponding to a high-level language construct.
19. The system of claim 18 , wherein the high-level programming language construct comprises a pre-defined keyword.
20. The system of claim 15 , wherein the conditional expression comprises an identifier of a system variable, an operator, and a constant value.