Steven Watanabe wrote:
struct tag {};
void f(int (&array)[100][3], unsigned key_index) { assert(key_index < 3); std::qsort(array,100,sizeof(int[3]), make_c_function<tag,void(const void*,const void*)>( ll::static_cast_<const int*>(_1)[key_index] < ll::static_cast_<const int*>(_1)[key_index])); }
struct tag { boost::mutex lock; }; tag tag_; void f(int (&array)[100][3], unsigned key_index) { assert(key_index < 3); boost::mutex::scoped_lock l(tag_.lock); std::qsort(array,100,sizeof(int[3]), make_c_function<tag,void(const void*,const void*)>( ll::static_cast_<const int*>(_1)[key_index] < ll::static_cast_<const int*>(_1)[key_index])); } Not that the use case makes any sense to me :-( So I'm still guessing as to what you want to achieve with thread safety here. PS... This thread reminds me of the ##c++ irc conversations. -- -- Grafik - Don't Assume Anything -- Redshift Software, Inc. - http://redshift-software.com -- rrivera/acm.org - grafik/redshift-software.com -- 102708583/icq - grafikrobot/aim - grafikrobot/yahoo