2013-09-25 18:37:32 +08:00
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<title>LLDB Goals</title>
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<div class="www_title">
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The <strong>LLDB</strong> Debugger
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<div class="post">
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<h1 class ="postheader">Goals</h1>
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<div class="postcontent">
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<p>The current state of the art in open source debuggers are that
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they work in the common cases for C applications, but don't
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handle many "hard cases" properly. For example, C++ expression
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parsing, handling overloading, templates, multi-threading, and
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other non-trivial scenarios all work in some base cases, but
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don't work reliably.</p>
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<p>The goal of LLDB is to provide an amazing debugging experience that "just
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works". We aim to solve these long-standing problems where debuggers get
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confused, so that you can think about debugging your problem, not
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about deficiencies in the debugger.</p>
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<p>With a long view, there is no good reason for a debugger to
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reinvent its own C/C++ parser, type system, know all the
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target calling convention details, implement its own disassembler,
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etc. By using the existing libraries vended by the LLVM
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project, we believe that many of these problems will be defined
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away, and the debugger can focus on important issues like
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process control, efficient symbol reading and indexing, thread
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management, and other debugger-specific problems.</p>
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<p>Some more specific goals include:</p>
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<ul>
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<li>Build libraries for inclusion in IDEs, command line tools, and
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other analysis tools</li>
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<li>High performance and efficient memory use</li>
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<li>Extensible: Python scriptable and use a plug-in architecture</li>
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<li>Reuse existing compiler technology where it makes sense</li>
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<li>Excellent multi-threaded debugging support</li>
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<li>Great support for C, Objective-C and C++</li>
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<li>Retargetable to support multiple platforms</li>
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<li>Provide a base for debugger research and other innovation</li>
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</ul>
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