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path: root/src/stdio/fmemopen.c
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2015-06-16refactor stdio open file list handling, move it out of global libc structRich Felker-7/+1
functions which open in-memory FILE stream variants all shared a tail with __fdopen, adding the FILE structure to stdio's open file list. replacing this common tail with a function call reduces code size and duplication of logic. the list is also partially encapsulated now. function signatures were chosen to facilitate tail call optimization and reduce the need for additional accessor functions. with these changes, static linked programs that do not use stdio no longer have an open file list at all.
2012-11-09always add memory streams to stdio open file listRich Felker-6/+7
per interpretation for austin group issue #626, fflush(0) and exit() must block waiting for a lock if another thread has locked a memory stream with flockfile. this adds some otherwise-unnecessary synchronization cost to use of memory streams, but there was already a synchronization cost calling malloc anyway. previously the stream was only added to the open file list in single-threaded programs, so that upon subsequent call to pthread_create, locking could be turned on for the stream.
2012-11-08clean up stdio_impl.hRich Felker-0/+3
this header evolved to facilitate the extremely lazy practice of omitting explicit includes of the necessary headers in individual stdio source files; not only was this sloppy, but it also increased build time. now, stdio_impl.h is only including the headers it needs for its own use; any further headers needed by source files are included directly where needed.
2012-09-06use restrict everywhere it's required by c99 and/or posix 2008Rich Felker-1/+1
to deal with the fact that the public headers may be used with pre-c99 compilers, __restrict is used in place of restrict, and defined appropriately for any supported compiler. we also avoid the form [restrict] since older versions of gcc rejected it due to a bug in the original c99 standard, and instead use the form *restrict.
2011-09-04more fmemopen null termination fixesRich Felker-2/+3
null termination is only added when current size grows. in update modes, null termination is not added if it does not fit (i.e. it is not allowed to clobber data). these rules make very little sense, but that's how it goes..
2011-09-04fix some fmemopen behaviorsRich Felker-4/+7
read should not be allowed past "current size". append mode should write at "current size", not buffer size. null termination should not be written except when "current size" grows.
2011-09-04fmemopen: fix eof handling, hopefully right this timeRich Felker-3/+4
2011-09-04fmemopen fixesRich Felker-1/+3
disallow seek past end of buffer (per posix) fix position accounting to include data buffered for read don't set eof flag when no data was requested
2011-09-03implement fmemopenRich Felker-18/+66
testing so far has been minimal. may need further work.
2011-03-14partially-written draft of fmemopen, still in #if 0Rich Felker-3/+48
2011-02-12initial check-in, version 0.5.0v0.5.0Rich Felker-0/+16