| Commit message (Expand) | Author | Age | Files | Lines |
|---|
| * | clean up handling of thread/nothread mode, locking | Rich Felker | 2011-04-17 | 2 | -5/+1 |
| * | debloat: use __syscall instead of syscall where possible•••don't waste time (and significant code size due to function call
overhead!) setting errno when the result of a syscall does not matter
or when it can't fail.
| Rich Felker | 2011-04-17 | 4 | -5/+5 |
| * | avoid setting errno when checking for tty•••setting errno here is completely valid, but some programs, notably
busybox printf, assume that errno will not be set during output and
treat this as an error condition. in any case, skipping it slightly
reduces code size and saves time.
| Rich Felker | 2011-04-15 | 2 | -2/+2 |
| * | make tmpfile slightly more efficient (use unlink syscall instead of remove) | Rich Felker | 2011-04-14 | 1 | -1/+1 |
| * | fix printf("%.9g", 1.1) and similar not dropping trailing zeros | Rich Felker | 2011-04-12 | 1 | -1/+3 |
| * | fix fputwc return value | Rich Felker | 2011-04-11 | 1 | -1/+1 |
| * | work around a nasty bug in linux readv syscall•••according to posix, readv "shall be equivalent to read(), except..."
that it places the data into the buffers specified by the iov array.
however on linux, when reading from a terminal, each iov element
behaves almost like a separate read. this means that if the first iov
exactly satisfied the request (e.g. a length-one read of '\n') and the
second iov is nonzero length, the syscall will block again after
getting the blank line from the terminal until another line is read.
simply put, entering a single blank line becomes impossible.
the solution, fortunately, is simple. whenever the buffer size is
nonzero, reduce the length of the requested read by one byte and let
the last byte go through the buffer. this way, readv will already be
in the second (and last) iov, and won't re-block on the second iov.
| Rich Felker | 2011-04-09 | 1 | -3/+4 |
| * | add more legacy functions: setlinebuf and setbuffer | Rich Felker | 2011-04-05 | 3 | -1/+15 |
| * | fix overflow in printf %N$ argument handling | Rich Felker | 2011-04-05 | 1 | -2/+2 |
| * | fix various floating point rounding and formatting errors in *printf | Rich Felker | 2011-04-05 | 1 | -17/+25 |
| * | simplify vdprintf implementation greatly based on recent vfprintf changes•••since vfprintf will provide a temporary buffer in the case where the
target FILE has a zero buffer size, don't bother setting up a real
buffer for vdprintf. this also allows us to skip the call to fflush
since we know everything will be written out before vfprintf returns.
| Rich Felker | 2011-04-04 | 1 | -5/+2 |
| * | use a local temp buffer for unbuffered streams in vfprintf•••this change makes it so most calls to fprintf(stderr, ...) will result
in a single writev syscall, as opposed to roughly 2*N syscalls (and
possibly more) where N is the number of format specifiers. in
principle we could use a much larger buffer, but it's best not to
increase the stack requirements too much. most messages are under 80
chars.
| Rich Felker | 2011-04-04 | 2 | -0/+14 |
| * | don't disable seeking after first seek failure•••this could cause problems if the application uses dup2(fd,fileno(f))
to redirect, and the old fd was not seekable but the new fd is.
| Rich Felker | 2011-04-02 | 1 | -8/+0 |
| * | apparently fseek should not set the error flag on failed seek | Rich Felker | 2011-04-02 | 1 | -4/+1 |
| * | fix tempnam name generation, and a small bug in tmpnam on retry limit | Rich Felker | 2011-03-29 | 2 | -21/+20 |
| * | make tmpfile fail after exceeding max tries. | Rich Felker | 2011-03-29 | 1 | -2/+6 |
| * | fix tmpnam to generate better names, not depend on non-ISO-C symbols | Rich Felker | 2011-03-29 | 1 | -25/+17 |
| * | fix messed-up errno if remove fails for a non-EISDIR reason | Rich Felker | 2011-03-29 | 1 | -2/+2 |
| * | learned something new - remove is supposed to support directories on POSIX | Rich Felker | 2011-03-29 | 1 | -1/+3 |
| * | revert some more spin optimizations that turned out to be pessimizations | Rich Felker | 2011-03-28 | 1 | -1/+1 |
| * | fix getc - the classic error of trying to store EOF+0-255 in a char type.. | Rich Felker | 2011-03-28 | 1 | -3/+3 |
| * | major stdio overhaul, using readv/writev, plus other changes•••the biggest change in this commit is that stdio now uses readv to fill
the caller's buffer and the FILE buffer with a single syscall, and
likewise writev to flush the FILE buffer and write out the caller's
buffer in a single syscall.
making this change required fundamental architectural changes to
stdio, so i also made a number of other improvements in the process:
- the implementation no longer assumes that further io will fail
following errors, and no longer blocks io when the error flag is set
(though the latter could easily be changed back if desired)
- unbuffered mode is no longer implemented as a one-byte buffer. as a
consequence, scanf unreading has to use ungetc, to the unget buffer
has been enlarged to hold at least 2 wide characters.
- the FILE structure has been rearranged to maintain the locations of
the fields that might be used in glibc getc/putc type macros, while
shrinking the structure to save some space.
- error cases for fflush, fseek, etc. should be more correct.
- library-internal macros are used for getc_unlocked and putc_unlocked
now, eliminating some ugly code duplication. __uflow and __overflow
are no longer used anywhere but these macros. switch to read or
write mode is also separated so the code can be better shared, e.g.
with ungetc.
- lots of other small things.
| Rich Felker | 2011-03-28 | 35 | -268/+235 |
| * | fix all implicit conversion between signed/unsigned pointers•••sadly the C language does not specify any such implicit conversion, so
this is not a matter of just fixing warnings (as gcc treats it) but
actual errors. i would like to revisit a number of these changes and
possibly revise the types used to reduce the number of casts required.
| Rich Felker | 2011-03-25 | 6 | -8/+8 |
| * | simplify and optimize FILE lock handling | Rich Felker | 2011-03-24 | 4 | -11/+12 |
| * | fix non-atomicity of puts | Rich Felker | 2011-03-24 | 1 | -1/+5 |
| * | global cleanup to use the new syscall interface | Rich Felker | 2011-03-20 | 12 | -19/+19 |
| * | implement [v]swprintf | Rich Felker | 2011-03-18 | 2 | -0/+60 |
| * | implement wprintf family of functions•••this implementation is extremely ugly and inefficient, but it avoids a
good deal of code duplication and bloat. it may be cleaned up later to
eliminate the remaining code duplication and some of the warts, but i
don't really care about its performance.
note that swprintf is not yet implemented.
| Rich Felker | 2011-03-17 | 4 | -0/+387 |
| * | optimize file locking: avoid cache-polluting writes to global storage | Rich Felker | 2011-03-16 | 2 | -3/+5 |
| * | partially-written draft of fmemopen, still in #if 0 | Rich Felker | 2011-03-14 | 1 | -3/+48 |
| * | implement flockfile api, rework stdio locking | Rich Felker | 2011-03-12 | 6 | -3/+54 |
| * | rewind must clear the error indicator in addition to seeking | Rich Felker | 2011-02-22 | 1 | -2/+5 |
| * | avoid referencing address of extern function from vdprintf•••this change is in preparation for upcoming PIC/shared library support.
the intent is to avoid going through the GOT, mainly so that dprintf
is operable immediately, prior to processing of relocations. having
dprintf accessible from the dynamic linker will make writing and
debugging the dynamic linker much easier.
| Rich Felker | 2011-02-20 | 1 | -1/+6 |
| * | cleanup asprintf stuff | Rich Felker | 2011-02-20 | 2 | -2/+2 |
| * | fix %n specifier, again. this time it was storing the wrong value. | Rich Felker | 2011-02-20 | 1 | -7/+7 |
| * | fix printf %n specifier - missing breaks had it clobbering memory | Rich Felker | 2011-02-16 | 1 | -7/+7 |
| * | fix some pointer signedness issues (this was invalid C) | Rich Felker | 2011-02-14 | 2 | -3/+3 |
| * | cleaning up syscalls in preparation for x86_64 port•••- hide all the legacy xxxxxx32 name cruft in syscall.h so the actual
source files can be clean and uniform across all archs.
- cleanup llseek/lseek and mmap2/mmap handling for 32/64 bit systems
- alternate implementation for nice if the target lacks nice syscall
| Rich Felker | 2011-02-13 | 1 | -1/+7 |
| * | initial check-in, version 0.5.0 | Rich Felker | 2011-02-12 | 96 | -0/+2857 |
