Efficient Polymorphic Calls

Karel Driesen

ធ្នូ 2012 · Springer Science & Business Media

សៀវភៅអេឡិចត្រូនិច

216

ទំព័រ

អំពីសៀវភៅអេឡិចត្រូនិកនេះ

The implementation of object-oriented languages has been an active topic of research since the 1960s when the first Simula compiler was written. The topic received renewed interest in the early 1980s with the growing popularity of object-oriented programming languages such as c++ and Smalltalk, and got another boost with the advent of Java. Polymorphic calls are at the heart of object-oriented languages, and even the first implementation of Simula-67 contained their classic implementation via virtual function tables. In fact, virtual function tables predate even Simula-for example, Ivan Sutherland's Sketchpad drawing editor employed very similar structures in 1960. Similarly, during the 1970s and 1980s the implementers of Smalltalk systems spent considerable efforts on implementing polymorphic calls for this dynamically typed language where virtual function tables could not be used. Given this long history of research into the implementation of polymorphic calls, and the relatively mature standing it achieved over time, why, one might ask, should there be a new book in this field? The answer is simple. Both software and hardware have changed considerably in recent years, to the point where many assumptions underlying the original work in this field are no longer true. In particular, virtual function tables are no longer sufficient to implement polymorphic calls even for statically typed languages; for example, Java's interface calls cannot be implemented this way. Furthermore, today's processors are deeply pipelined and can execute instructions out-of order, making it difficult to predict the execution time of even simple code sequences.

ស្វែងរកច្រើនទៀត

វាយតម្លៃសៀវភៅអេឡិចត្រូនិកនេះ

ប្រាប់យើងអំពីការយល់ឃើញរបស់អ្នក។

អានព័ត៌មាន

ទូរសព្ទឆ្លាតវៃ និងថេប្លេត

ដំឡើងកម្មវិធី Google Play Books សម្រាប់ Android និង iPad/iPhone ។ វាធ្វើសមកាលកម្មដោយស្វ័យប្រវត្តិជាមួយគណនីរបស់អ្នក និងអនុញ្ញាតឱ្យអ្នកអានពេលមានអ៊ីនធឺណិត ឬគ្មានអ៊ីនធឺណិតនៅគ្រប់ទីកន្លែង។

កុំព្យូទ័រយួរដៃ និងកុំព្យូទ័រ

អ្នកអាចស្ដាប់សៀវភៅជាសំឡេងដែលបានទិញនៅក្នុង Google Play ដោយប្រើកម្មវិធីរុករកតាមអ៊ីនធឺណិតក្នុងកុំព្យូទ័ររបស់អ្នក។

eReaders និងឧបករណ៍ផ្សេងទៀត

ដើម្បីអាននៅលើឧបករណ៍ e-ink ដូចជាឧបករណ៍អានសៀវភៅអេឡិចត្រូនិក Kobo អ្នកនឹងត្រូវទាញយកឯកសារ ហើយផ្ទេរវាទៅឧបករណ៍របស់អ្នក។ សូមអនុវត្តតាមការណែនាំលម្អិតរបស់មជ្ឈមណ្ឌលជំនួយ ដើម្បីផ្ទេរឯកសារទៅឧបករណ៍អានសៀវភៅអេឡិចត្រូនិកដែលស្គាល់។

សម្គាល់ថាមិនសមរម្យ