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* Autogen: Use std::istreambuf_iterator for file so string readingSebastian Holtermann2018-04-031-20/+29
| | | | | | | This adds a dedicated mutex for file reading and writing to cmQtAutoGenerator::FileSystem. The purpose of the change is to avoid that long files reads block cmsys based path computations, which are protected by an other mutex.
* Autogen: Protected calls to cmFilePathChecksumSebastian Holtermann2018-04-031-0/+16
| | | | | Closes #17861 Closes #17862
* Autogen: Protected calls to cmQtAutoGen::SubDirPrefixSebastian Holtermann2018-04-031-0/+7
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* Autogen: Protected calls to cmSystemTools::GetFilenameWithoutLastExtensionSebastian Holtermann2018-04-031-0/+7
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* Autogen: Protected calls to cmSystemTools::Split/JoinPathSebastian Holtermann2018-04-031-0/+23
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* Autogen: Protected calls to cmSystemTools::CollapseCombinedPathSebastian Holtermann2018-04-031-1/+8
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* Autogen: Check if a file is empty before reading itSebastian Holtermann2018-03-061-11/+18
| | | | | | | | | | | Calling `std::string::front()` on an empty string results in an undefined behavior by the C++ standard. In gcc8 it causes an assertion to fail. This adds a check to `AUTOGEN` if a file to read is empty and in case avoids the use of an empty `std::string` buffer. Closes #17793
* Autogen: Process files concurrently in AUTOMOC and AUTOUICSebastian Holtermann2018-01-171-179/+490
| | | | | | | | | | | | | | | | | | | | | | This introduces concurrent thread processing in the `_autogen` target wich processes AUTOMOC and AUTOUIC. Source file parsing is distributed among the threads by using a job queue from which the threads pull new parse jobs. Each thread might start an independent ``moc`` or ``uic`` process. Altogether this roughly speeds up the AUTOMOC and AUTOUIC build process by the number of physical CPUs on the host system. The exact number of threads to start in the `_autogen` target is controlled by the new AUTOGEN_PARALLEL target property which is initialized by the new CMAKE_AUTOGEN_PARALLEL variable. If AUTOGEN_PARALLEL is empty or unset (which is the default) the thread count is set to the number of physical CPUs on the host system. The AUTOMOC/AUTOUIC generator and the AUTORCC generator are refactored to use a libuv loop internally. Closes #17422.
* Autogen: Fix for problematic nested lists separatorSebastian Holtermann2017-12-181-0/+3
| | | | | | | | | | | | | | | In the AutogenInfo.cmake file the separator for nested lists was `@LSEP@` which led to a speed regression because the `@` character triggered an (unsuccessful) expression evaluation. By setting the policy version of the CMake instance in the `_autogen` target to 3.9, the OLD `@` evaluating behavior controlled by policy CMP0053 is disabled. Also the nested lists separator string is changed to `<<<S>>>`, which solves the problem twofold. Closes #17570
* Autogen: Add and use cmQtAutoGenerator base classSebastian Holtermann2017-11-191-0/+320
Adds the new base class `cmQtAutoGenerator` which contains common variables and methods used by `cmQtAutoGeneratorMocUic` and `cmQtAutoGeneratorRcc`.
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