Membuat Aplikasi Berbasis Platform 64-bit

by Agus Kurniawan 8. April 2011 09:16

ilustrasi

Perkembangan komputer yang begitu cepat dan tanpa sadar sudah banyak dibanjiri platform komputer yang berbasis 64-bit namun perkembangan pemrograman sekarang masih juga berorientasi pemrograman berbasis 32-bit so pada edisi April 2011 majalah PC Media gw menulis mengenai bagaimana membuat program berbasis 64-bit.

Apa itu Platform 64-bit?

Pada konsep arsitektur komputer istilah 64-bit menunjukan 64-bit integer dan tipe data lainnya mempunya ukuran 64 bits. Ini artinya kita mendefinisikan platform 64-bit dengan panjang data yang dimiliki.

Dengan ukuran data yang lebih besar dibandingkan dengan 32-bit maka sistem platform 64-bit kinerjanya akan jauh lebih cepat karena data yang diprosesnya lebih banyak. Dari segi fitur processor, platform 64-bit memungkinkan dapat meningkatkan kinerja processor tersebut. Contoh perbandingan fitur processor Intel 32-bit dan 64-bit dapat dilihat pada gambar dibawah ini

gambar2

Aplikasi 32-bit Pada Platform 64-bit

Sebagian besar sistem operasi berplatform 64-bit tidak mengijinkan aplikasi 32-bit berjalan diatas sistem operasi ini tapi beberapa sistem operasi 64-bit mengijinkan aplikasi 32-bit berjalan diatasnya. Teknik yang digunakan menggunakan emulasi. Salah satu contohnya adalah teknologi WoW64 (Windows 32-bit On Windows 64-bit).
Teknologi WoW64 memungkinkan aplikasi 32-bit dapat berjalan diatas platform OS Windows 64-bit antara lain:

  • Windows 2000 Limited Edition
  • Windows XP Professional x64
  • Windows Server 2003 x64
  • Windows Vista dan 7 berbasis x64
  • Windows Server 2008 x64

Khusus untuk Windows dengan platform Itanium aplikasi 32-bit sebagian besar tidak dapat dijalankan.  Arsitektur umum teknologi WoW64 dapat dilihat pada gambar dibawah  dimana realisasinya Microsoft menambahkan komponen library antara lain:

  • WoW64.dll – Untuk mengatur initialisasi thread dan process serta melakukan interferensi system call
  • WoW64win.dll – Menangkap GUI system call
  • WoW64cpu.dll – Untuk mengatur thread context pada spesifik CPU

gambar3

Bagaimana implementasi pada C/C++, .NET dan java untuk membuat program berbasis 64-bit? lebih lengkapnya dapat dilihat pada majalah PC Media edisi April 2011.

Referensi

Tags:

Papers | C/C++ | .NET | Java

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