diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/posix/tempname.c | 40 |
1 files changed, 12 insertions, 28 deletions
diff --git a/sysdeps/posix/tempname.c b/sysdeps/posix/tempname.c index 2ed39d1..de34694 100644 --- a/sysdeps/posix/tempname.c +++ b/sysdeps/posix/tempname.c @@ -71,22 +71,15 @@ #endif #ifdef _LIBC -# include <hp-timing.h> -# if HP_TIMING_AVAIL -# define RANDOM_BITS(Var) \ - if (__glibc_unlikely (value == UINT64_C (0))) \ - { \ - /* If this is the first time this function is used initialize \ - the variable we accumulate the value in to some somewhat \ - random value. If we'd not do this programs at startup time \ - might have a reduced set of possible names, at least on slow \ - machines. */ \ - struct timeval tv; \ - __gettimeofday (&tv, NULL); \ - value = ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec; \ - } \ - HP_TIMING_NOW (Var) -# endif +# include <random-bits.h> +# define RANDOM_BITS(Var) ((Var) = random_bits ()) +# else +# define RANDOM_BITS(Var) \ + { \ + struct timeval tv; \ + __gettimeofday (&tv, NULL); \ + (Var) = ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec; \ + } #endif /* Use the widest available unsigned type if uint64_t is not @@ -193,8 +186,7 @@ __gen_tempname (char *tmpl, int suffixlen, int flags, int kind) { int len; char *XXXXXX; - static uint64_t value; - uint64_t random_time_bits; + uint64_t value; unsigned int count; int fd = -1; int save_errno = errno; @@ -227,16 +219,8 @@ __gen_tempname (char *tmpl, int suffixlen, int flags, int kind) XXXXXX = &tmpl[len - 6 - suffixlen]; /* Get some more or less random data. */ -#ifdef RANDOM_BITS - RANDOM_BITS (random_time_bits); -#else - { - struct timeval tv; - __gettimeofday (&tv, NULL); - random_time_bits = ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec; - } -#endif - value += random_time_bits ^ __getpid (); + RANDOM_BITS (value); + value ^= (uint64_t)__getpid () << 32; for (count = 0; count < attempts; value += 7777, ++count) { |