发明授权
- 专利标题: System and method for lazy loading of shared libraries
- 专利标题(中): 用于延迟加载共享库的系统和方法
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申请号: US391300申请日: 1995-02-21
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公开(公告)号: US5708811A公开(公告)日: 1998-01-13
- 发明人: James Wendell Arendt , Paul Placido Giangarra , Ravindranath Kasinath Manikundalam , Donald Robert Padgett , James Michael Phelan
- 申请人: James Wendell Arendt , Paul Placido Giangarra , Ravindranath Kasinath Manikundalam , Donald Robert Padgett , James Michael Phelan
- 申请人地址: NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: NY Armonk
- 主分类号: G06F12/08
- IPC分类号: G06F12/08 ; G06F9/445 ; G06F12/10
摘要:
Lazy loading of executable library objects reduces operating system overhead and memory commitment requirements by postponing object loading until object references are expected. Initial task loading allocates only the main executable and library objects referenced by that executable. Secondary referenced objects are not allocated. Object references cause page faults for allocated but not loaded pages. Page fault handling causes loading and fixup of executable objects. Page fault handling also determines the next level of object references and allocates memory for the next object level. Shared memory systems allow sharing of executable objects until explicitly referenced. Once referenced, memory fault causes copying and fixup to referencing task memory area.
公开/授权文献
- US4944449A Oversize laser mailer and return envelope and method 公开/授权日:1990-07-31