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Implementation Issues |
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Working with Text in AWTAfter some code profiling and trace [Runtime.getRuntime().traceMethodCalls(true); and use of java_g] we notice in java 1.1.x many object allocation during a single drawString (mainly String to Vector/char conversion). Some tests with drawBytes raise problem under linux (drawBytes don't use the correct font). |
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Cost of Synchronized MethodIn the JDK interpreter, calling a synchronized method is typically 10 times slower than calling an unsynchronized method. With JIT compilers, this performance gap has increased to 50-100 time. |
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Basic Combinator and OptimizationAs basic combinators (Horizontal or Vertical) will provide the building block of more complex combinators, we must adopt a good trade-off between efficiency and maintainability. A rapid analysis of the context of use shows that vertical display/formatting is the true problem. Horizontal ineffiency is less sensitive as from ergonomic point of view a display should be complient with a standard screen. |
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