b1e7c6fce1
By moving std::make_obj_using_allocator and the related "utility functions for uses-allocator construction" to a new header, we can avoid including the whole of <memory> in <scoped_allocator> and <memory_resource>. In order to simplify the implementation of those utility functions they now use concepts unconditionally. They are no longer defined if __cpp_concepts is not defined. To simplify the code that uses those functions I've introduced a __cpp_lib_make_obj_using_allocator feature test macro (not specified in the standard, which might be an oversight). That allows the code in <memory_resource> and <scoped_allocator> to check the feature test macro to decide whether to use the new utilities, or fall back to the C++17 code. At the same time, this reshuffles some of the headers included by <memory> so that they are (mostly?) self-contained. It should no longer be necessary to include other headers before <bits/shared_ptr.h> when other parts of the library want to use std::shared_ptr without including the whole of <memory>. libstdc++-v3/ChangeLog: * include/Makefile.am: Add new header. * include/Makefile.in: Regenerate. * include/bits/shared_ptr.h: Include <iosfwd>. * include/bits/shared_ptr_base.h: Include required headers here directly, instead of in <memory>. * include/bits/uses_allocator_args.h: New file. Move utility functions for uses-allocator construction from <memory> to here. Only define the utility functions when concepts are available. (__cpp_lib_make_obj_using_allocator): Define non-standard feature test macro. * include/std/condition_variable: Remove unused headers. * include/std/future: Likewise. * include/std/memory: Remove headers that are not needed directly, and are now inclkuded where they're needed. Include new <bits/uses_allocator_args.h> header. * include/std/memory_resource: Include only the necessary headers. Use new feature test macro to detect support for the utility functions. * include/std/scoped_allocator: Likewise. * include/std/version (__cpp_lib_make_obj_using_allocator): Define. |
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| doc | ||
| include | ||
| libsupc++ | ||
| po | ||
| python | ||
| scripts | ||
| src | ||
| testsuite | ||
| acinclude.m4 | ||
| aclocal.m4 | ||
| ChangeLog | ||
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| ChangeLog-2019 | ||
| config.h.in | ||
| configure | ||
| configure.ac | ||
| configure.host | ||
| crossconfig.m4 | ||
| fragment.am | ||
| linkage.m4 | ||
| Makefile.am | ||
| Makefile.in | ||
| README | ||
file: libstdc++-v3/README New users may wish to point their web browsers to the file index.html in the 'doc/html' subdirectory. It contains brief building instructions and notes on how to configure the library in interesting ways.