diff options
| -rw-r--r-- | comphelper/source/misc/random.cxx | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/comphelper/source/misc/random.cxx b/comphelper/source/misc/random.cxx index 84e31760a379..50f3ce46a840 100644 --- a/comphelper/source/misc/random.cxx +++ b/comphelper/source/misc/random.cxx @@ -12,9 +12,11 @@ #include <comphelper/random.hxx> #include <rtl/instance.hxx> +#include <rtl/ustring.hxx> #include <assert.h> #include <time.h> #include <random> +#include <stdexcept> // this is nothing but a simple wrapper around // the std::random generators @@ -37,13 +39,21 @@ struct RandomNumberGenerator STD_RNG_ALGO global_rng; RandomNumberGenerator() { - std::random_device rd; - // initialises the state of the global random number generator - // should only be called once. - // (note, a few std::variate_generator<> (like normal) have their - // own state which would need a reset as well to guarantee identical - // sequence of numbers, e.g. via myrand.distribution().reset()) - global_rng.seed(rd() ^ time(nullptr)); + try + { + std::random_device rd; + // initialises the state of the global random number generator + // should only be called once. + // (note, a few std::variate_generator<> (like normal) have their + // own state which would need a reset as well to guarantee identical + // sequence of numbers, e.g. via myrand.distribution().reset()) + global_rng.seed(rd() ^ time(nullptr)); + } + catch (std::runtime_error& e) + { + SAL_WARN("comphelper.random", OUString("Using std::random_device failed: ") << e.what()); + global_rng.seed(time(nullptr)); + } } }; |