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* split internal lock API out of libc.h, creating lock.hRich Felker2018-09-121-1/+1
| | | | | | | | | this further reduces the number of source files which need to include libc.h and thereby be potentially exposed to libc global state and internals. this will also facilitate further improvements like adding an inline fast-path, if we want to do so later.
* overhaul internally-public declarations using wrapper headersRich Felker2018-09-121-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commits leading up to this one have moved the vast majority of libc-internal interface declarations to appropriate internal headers, allowing them to be type-checked and setting the stage to limit their visibility. the ones that have not yet been moved are mostly namespace-protected aliases for standard/public interfaces, which exist to facilitate implementing plain C functions in terms of POSIX functionality, or C or POSIX functionality in terms of extensions that are not standardized. some don't quite fit this description, but are "internally public" interfacs between subsystems of libc. rather than create a number of newly-named headers to declare these functions, and having to add explicit include directives for them to every source file where they're needed, I have introduced a method of wrapping the corresponding public headers. parallel to the public headers in $(srcdir)/include, we now have wrappers in $(srcdir)/src/include that come earlier in the include path order. they include the public header they're wrapping, then add declarations for namespace-protected versions of the same interfaces and any "internally public" interfaces for the subsystem they correspond to. along these lines, the wrapper for features.h is now responsible for the definition of the hidden, weak, and weak_alias macros. this means source files will no longer need to include any special headers to access these features. over time, it is my expectation that the scope of what is "internally public" will expand, reducing the number of source files which need to include *_impl.h and related headers down to those which are actually implementing the corresponding subsystems, not just using them.
* revise the definition of multiple basic locks in the codeJens Gustedt2018-01-091-1/+1
| | | | In all cases this is just a change from two volatile int to one.
* fix missing volatile qualifier on lock in __get_localeJens Gustedt2017-07-041-1/+1
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* make static C and C.UTF-8 locales available outside of newlocaleRich Felker2015-06-061-10/+2
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* implement fail-safe static locales for newlocaleRich Felker2015-05-271-3/+3
| | | | | | | | this frees applications which need to make temporary use of the C locale (via uselocale) from the possibility that newlocale might fail. the C.UTF-8 locale is also provided as a static locale. presently they behave the same, but this may change in the future.
* rename internal locale file handling locale mapsRich Felker2015-05-271-0/+124
since the __setlocalecat function was removed, the filename __setlocalecat.c no longer made sense.