Pre-Grant Publication Number: 20070234286
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Prior Art Detail
Summary / Description
| Summary / Description | The innovations comprised in this disclosure include the following: 1. Extensions to the standard Java byte code instruction set to enable efficient run-time isolation of pointer variables from non-pointer variables. The extended byte codes are described as the PERC instruction set. 2. A mechanism to translate traditional Java byte codes into the extended PERC byte codes at run-time, as new Java byte codes are loaded into the virtual machine's execution environment. |
Basic Information
| Type of Prior Art | Issued Patents - US |
| Country | United States of America |
| Patent/Application # | |
| Kind Code | United States (US) - United STATES Patent - A |
| Patentee Name | Newmonics Inc. |
| Relevant Pages, Columns, or Lines | Abstract; |
| URL | |
| Filing Date | June 27, 2000 |
| Additional Information | The patent application seems to be addressing the same problem of distinguishing whether the parameters have been passed as reference/pointer. This seems to be achieved by extending bytecode |
Notes / To Do
| Notes | |
Excerpt
Excerpt The invention includes a method for implementing a single abstract virtual machine execution stack with multiple independent stacks in order to improve the efficiency of distinguishing memory pointers from non-pointers
. The invention also includes a method for efficiently mixing a combination of byte-code, native, and JIT-translated methods in the implementation of a particular task, where byte-code methods are represented in the instruction set of the virtual machine, native methods are written in a language like C and represented by native machine code, and JIT-translated methods result from automatic translation of byte-code methods into the native machine code of the host machine. |
Relevance
Claims
1
A method comprising:
locating a parameter of a function, the parameter to be passed as a pointer if a size of the parameter is greater than a threshold and to be passed as data if the size of the parameter is not greater than the threshold; and
adding an annotation record for the parameter to a byte code image file containing byte code for the function.
Relevance
The innovations comprised in this disclosure include the following:
1. Extensions to the standard Java byte code instruction set to enable efficient run-time isolation of pointer variables from non-pointer variables. The extended byte codes are described as the PERC instruction set.
2. A mechanism to translate traditional Java byte codes into the extended PERC byte codes at run-time, as new Java byte codes are loaded into the virtual machine's execution environment.
The innovations comprised in this disclosure include the following:
1. Extensions to the standard Java byte code instruction set to enable efficient run-time isolation of pointer variables from non-pointer variables. The extended byte codes are described as the PERC instruction set.
2. A mechanism to translate traditional Java byte codes into the extended PERC byte codes at run-time, as new Java byte codes are loaded into the virtual machine's execution environment.
Claim Chart
All
4
A method as defined in Claim 1, further comprising:
determining a platform-independent representation of the size of the parameter; and
including the platform-independent size representation in the annotation record.
Relevance
The invention includes a method for implementing a single abstract virtual machine execution stack with multiple independent stacks in order to improve the efficiency of distinguishing memory pointers from non-pointers.
The invention includes a method for implementing a single abstract virtual machine execution stack with multiple independent stacks in order to improve the efficiency of distinguishing memory pointers from non-pointers.
Claim Chart
Some
