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* random.c (random_seed): use /dev/urandom if available.

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[ruby-dev:25392]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@7713 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2005-01-03 02:41:03 +00:00
parent 5ef141e3e9
commit e5abd52ab2
2 changed files with 24 additions and 1 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Mon Jan 3 11:37:42 2005 Tanaka Akira <akr@m17n.org>
* random.c (random_seed): use /dev/urandom if available.
[ruby-dev:25392]
Mon Jan 3 11:03:37 2005 Masatoshi SEKI <m_seki@mva.biglobe.ne.jp> Mon Jan 3 11:03:37 2005 Masatoshi SEKI <m_seki@mva.biglobe.ne.jp>
* test/drb/test_drb.rb: move TestDRbReusePort to new file. * test/drb/test_drb.rb: move TestDRbReusePort to new file.

20
random.c
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@ -144,6 +144,11 @@ genrand_real()
#include <unistd.h> #include <unistd.h>
#endif #endif
#include <time.h> #include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
static int first = 1; static int first = 1;
@ -167,9 +172,22 @@ random_seed()
{ {
static int n = 0; static int n = 0;
struct timeval tv; struct timeval tv;
unsigned long result;
int fd;
unsigned long buf;
gettimeofday(&tv, 0); gettimeofday(&tv, 0);
return tv.tv_sec ^ tv.tv_usec ^ getpid() ^ n++; result = tv.tv_sec ^ tv.tv_usec ^ getpid() ^ n++;
result += (unsigned long)&result;
if ((fd = open("/dev/urandom", O_RDONLY)) >= 0) {
read(fd, &buf, sizeof(buf));
close(fd);
result ^= buf;
}
return result;
} }
/* /*