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particularly help programs which load many shared libraries with a lot of relocations. Large C++ programs such as are found in KDE are a prime example. While relocating a shared object, maintain a vector of symbols which have already been looked up, directly indexed by symbol number. Typically, symbols which are referenced by a relocation entry are referenced by many of them. This is the same optimization I made to the a.out dynamic linker in 1995 (rtld.c revision 1.30). Also, compare the first character of a sought-after symbol with its symbol table entry before calling strcmp(). On a PII/400 these changes reduce the start-up time of a typical KDE program from 833 msec (elapsed) to 370 msec. MFC after: 5 days |
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| .. | ||
| alpha | ||
| amd64 | ||
| i386 | ||
| debug.c | ||
| debug.h | ||
| Makefile | ||
| malloc.c | ||
| map_object.c | ||
| rtld.1 | ||
| rtld.c | ||
| rtld.h | ||
| xmalloc.c | ||