• Journal of KIISE:Computing Practices and Letters
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• v.8 no.6
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• pp.630-638
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• 2002

Debugging for application Programs running in embedded Linux systems has mostly been done remotely due to the limited resources of the target systems. The gdb, which is one of the most famous debugger in Linux systems, does not support the debugging of the child processes which is created by the fork system call in local and remote environments. Therefore, by using gdb, developers can debug the application programs that have single-process structure in local and remote environments, but they cannot debug the application programs that have multi-process structures by using gdb in remote environments. Also, although developers can debug the application programs that have multi-process structures by using gdb in local environments, it needs additional and unnecessary codings. In this paper, we presents the remote debugging scheme that can be used for debugging multi-process structured applications. The proposed scheme is implemented by using the library wrapping scheme, and also uses the conventional system components such as gdb and gdbserver.

• The KIPS Transactions:PartA
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• v.10A no.4
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• pp.305-312
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• 2003

In the embedded Linux environments, developers can concurrently debug multiple processes that have parent-child relationships using multiple gdbs and gdbservers. But, it needs additional coding efforts and messy works of activating another gdbs and gdbservers for each created process, and so, it may be inefficient in the viewpoint of developers. In this paper, we propose a mgdb library and mgdbserver that supports concurrent debugging of multiple processes in the embedded Linux systems by using the library wrapping mechanism without modifying the kernel. Also, through the experimentation of concurrent debugging for multiple processes that communicate by an unnamed pipe, we show that our proposed debugging mechanism is more efficient than the preexisting mechanisms.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.3
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• pp.111-117
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• 2018

Heterogeneous multi-core environment integrated with different functional cores is the powerful tool for the embedded system that became more complex and diverse. Specialized application requires one chip solution with different operating system over different cores. But this heterogeneity causes difficult configuration of the development environment, makes hard to develop and test software. We show the environment of heterogeneous multi-core processing can be mapped to symmetric multi-core environment. We construct Linux based RPMsg for the data exchange between processes similar with the heterogeneous multi-core RPMsg and experiment that the proposed environment can be used to reduce the steps of the heterogeneous multi-core application development. With this simplification, we suggest simulation method for easy development and debugging the heterogeneous multicore environment that makes complex steps to simple.

• Journal of the Korean Institute of Telematics and Electronics
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• v.26 no.2
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• pp.76-86
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• 1989

Many intelligent robots that are equipped with special tools and sensors re currently used in assembly line. As automatic manufacturing systems including such robots become advanced and complicated, there are increasing needs for the development of the sophisticated programming systems which can control several robots and other manufacutring equipments in workcell at a time. In this paper a programming language, ARL (Assembly Robot Language), is proposed and developed, which can control the manufacturing devices as well as robots in workcell. It has not only all the common features of modern textual robot language but also debugging facilities. In this language system machine dependecy is minimized by using dedicated processes and a shared memory for communication between processes. Extensibility and adaptability of the programming system is increased by using such a technique against the changes of workcel environment.