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| author | jcampan@google.com <jcampan@google.com@0039d316-1c4b-4281-b951-d872f2087c98> | 2008-08-01 16:17:15 +0000 |
|---|---|---|
| committer | jcampan@google.com <jcampan@google.com@0039d316-1c4b-4281-b951-d872f2087c98> | 2008-08-01 16:17:15 +0000 |
| commit | feb2ebfe608c307d3731943616a3ed6eb53b9ba1 (patch) | |
| tree | 7efb0a3ddf29e5797feeff5da1406308dffbf30b /chrome/common | |
| parent | 5f40d2dacb11c879e43521947b23ca6b7da40c4d (diff) | |
| download | chromium_src-feb2ebfe608c307d3731943616a3ed6eb53b9ba1.zip chromium_src-feb2ebfe608c307d3731943616a3ed6eb53b9ba1.tar.gz chromium_src-feb2ebfe608c307d3731943616a3ed6eb53b9ba1.tar.bz2 | |
Using a better seed. Using time() causes the random sequence to start with the same number when run several times consecutively.
BUG=None
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'chrome/common')
| -rw-r--r-- | chrome/common/rand_util.cc | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/chrome/common/rand_util.cc b/chrome/common/rand_util.cc index 2c1b190..13c586f 100644 --- a/chrome/common/rand_util.cc +++ b/chrome/common/rand_util.cc @@ -34,6 +34,7 @@ #include "base/logging.h" #include "base/thread_local_storage.h" +#include "base/time.h" #include "base/win_util.h" namespace rand_util { @@ -44,7 +45,9 @@ int g_tls_index = ThreadLocalStorage::Alloc(); int RandInt(int min, int max) { if (ThreadLocalStorage::Get(g_tls_index) == 0) { ThreadLocalStorage::Set(g_tls_index, reinterpret_cast<void*>(1)); - srand(static_cast<unsigned int>(time(0))); + TimeDelta now = TimeTicks::UnreliableHighResNow() - TimeTicks(); + unsigned int seed = static_cast<unsigned int>(now.InMicroseconds()); + srand(seed); } // From the rand man page, use this instead of just rand() % max, so that the |