diff options
author | Ulrich Drepper <drepper@redhat.com> | 2002-12-08 08:25:05 +0000 |
---|---|---|
committer | Ulrich Drepper <drepper@redhat.com> | 2002-12-08 08:25:05 +0000 |
commit | bdb04f922004ff8433591f138e40c09722836c45 (patch) | |
tree | 965b2db38d2cd7f9fb5114a10d53e3ddcc2bfad4 /nptl/pt-readv.c | |
parent | 3335502bec2220c7d1e89929d489c1a91a1d862b (diff) | |
download | glibc-bdb04f922004ff8433591f138e40c09722836c45.tar glibc-bdb04f922004ff8433591f138e40c09722836c45.tar.gz glibc-bdb04f922004ff8433591f138e40c09722836c45.tar.bz2 glibc-bdb04f922004ff8433591f138e40c09722836c45.zip |
Update.
* scripts/output-format.sed: Fix bug in one of the s expressions
which used / for one too many things.
Diffstat (limited to 'nptl/pt-readv.c')
-rw-r--r-- | nptl/pt-readv.c | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/nptl/pt-readv.c b/nptl/pt-readv.c index 9f6e653d4f..e81c8306a1 100644 --- a/nptl/pt-readv.c +++ b/nptl/pt-readv.c @@ -24,9 +24,11 @@ #include "pthreadP.h" -/* Not all versions of the kernel support the large number of records. */ +/* Not all versions of the kernel support extremely the large number + of records. */ #ifndef UIO_FASTIOV -# define UIO_FASTIOV 8 /* 8 is a safe number. */ +/* 1024 is what the kernels with NPTL support use. */ +# define UIO_FASTIOV 1024 #endif @@ -36,21 +38,29 @@ readv (fd, vector, count) const struct iovec *vector; int count; { - int oldtype; - ssize_t result; - - CANCEL_ASYNC (oldtype); + int oldtype = CANCEL_ASYNC (); + ssize_t result; #ifdef INTERNAL_SYSCALL result = INTERNAL_SYSCALL (readv, 3, fd, vector, count); - if (INTERNAL_SYSCALL_ERROR_P (result) - && __builtin_expect (count > UIO_FASTIOV, 0)) -#elif defined INLINE_SYSCALL + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result), 0)) + { + if (count <= UIO_FASTIOV) + { + __set_errno (INTERNAL_SYSCALL_ERRNO (result)); + result = -1; + } + else + result = __libc_readv (fd, vector, count); + } +#else +# if defined INLINE_SYSCALL result = INLINE_SYSCALL (readv, 3, fd, vector, count); if (result < 0 && errno == EINVAL && __builtin_expect (count > UIO_FASTIOV, 0)) -#endif +# endif result = __libc_readv (fd, vector, count); +#endif CANCEL_RESET (oldtype); |