Re: Threads: incompatibilities between C and C++?
Rani Sharoni wrote:
[...]
30.3.1.2/5 might add a bit more to my confusion:
"Synchronization: The completion of the invocation of the constructor
synchronizes with the beginning of the invocation of the copy of f."
I'm not sure about the meaning of this paragraph and why it's actually
required.
I think according to section 1.10 in the standard it means that the new
thread of execution can assume that the std::thread object is fully
constructed, i.e., the following program has defined semantics and the
asserts succeed:
-----------------------------------------------------------
#include <assert.h>
#include <thread>
int x;
void f(std::thread const* t)
{
assert(x == 1); assert(std::this_thread::get_id() == t->get_id());
}
int main() {
x = 1;
std::thread t(f, &t); t.join();
}
-----------------------------------------------------------
"synchronize with" is defined in 1.10/8.
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