on Wed Aug 22 2007, Howard Hinnant <howard.hinnant-AT-gmail.com> wrote:
This is a class that we're proposing can be used in two different ways:
Who's "we?" Does this correspond to your proposal, or, say, Peter's suggested modification?
Use the default constructor and this code is legal:
mutex m1; mutex m2; condition<mutex> cv; ... unique_lock<mutex> lk(m1); while (pred) cv.wait(lk); ... unique_lock<mutex> lk(m2); while (pred) cv.wait(lk);
Simply change the condition construction to:
condition<mutex> cv(m1);
And all of the sudden the above code is no longer legal. If the code is legal with one constructor, what is it that makes the code a logic error **100% of the time**, instead of a fixable exceptional circumstance when using the second constructor?
I didn't understand any of that sentence after the word "constructor." Could you rephrase? -- Dave Abrahams Boost Consulting http://www.boost-consulting.com The Astoria Seminar ==> http://www.astoriaseminar.com