91389000ab
This patch adds a formatter for `std::coroutine_handle`, both for libc++ and libstdc++. For the type-erased `coroutine_handle<>`, it shows the `resume` and `destroy` function pointers. For a non-type-erased `coroutine_handle<promise_type>` it also shows the `promise` value. With this change, executing the `v t` command on the example from https://clang.llvm.org/docs/DebuggingCoroutines.html now outputs ``` (task) t = { handle = coro frame = 0x55555555b2a0 { resume = 0x0000555555555a10 (a.out`coro_task(int, int) at llvm-example.cpp:36) destroy = 0x0000555555556090 (a.out`coro_task(int, int) at llvm-example.cpp:36) } } ``` instead of just ``` (task) t = { handle = { __handle_ = 0x55555555b2a0 } } ``` Note, how the symbols for the `resume` and `destroy` function pointer reveal which coroutine is stored inside the `std::coroutine_handle`. A follow-up commit will use this fact to infer the coroutine's promise type and the representation of its internal coroutine state based on the `resume` and `destroy` pointers. The same formatter is used for both libc++ and libstdc++. It would also work for MSVC's standard library, however it is not registered for MSVC, given that lldb does not provide pretty printers for other MSVC types, either. The formatter is in a newly added `Coroutines.{h,cpp}` file because there does not seem to be an already existing place where we could share formatters across libc++ and libstdc++. Also, I expect this code to grow as we improve debugging experience for coroutines further. **Testing** * Added API test Differential Revision: https://reviews.llvm.org/D132415
39 lines
731 B
CMake
39 lines
731 B
CMake
add_lldb_library(lldbPluginCPlusPlusLanguage PLUGIN
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BlockPointer.cpp
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Coroutines.cpp
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CPlusPlusLanguage.cpp
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CPlusPlusNameParser.cpp
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CxxStringTypes.cpp
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GenericBitset.cpp
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GenericOptional.cpp
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LibCxx.cpp
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LibCxxAtomic.cpp
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LibCxxInitializerList.cpp
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LibCxxList.cpp
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LibCxxMap.cpp
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LibCxxQueue.cpp
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LibCxxSpan.cpp
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LibCxxTuple.cpp
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LibCxxUnorderedMap.cpp
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LibCxxVariant.cpp
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LibCxxVector.cpp
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LibStdcpp.cpp
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LibStdcppTuple.cpp
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LibStdcppUniquePointer.cpp
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MSVCUndecoratedNameParser.cpp
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LINK_LIBS
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lldbCore
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lldbDataFormatters
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lldbHost
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lldbSymbol
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lldbTarget
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lldbUtility
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lldbPluginClangCommon
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lldbPluginCPPRuntime
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lldbPluginTypeSystemClang
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LINK_COMPONENTS
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Support
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)
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