c++ - Issue with std::atomic and custom structs -


can't seem (see code) reason. looked @ documentation, there doesn't seem reason not work...

struct vector {     float x, y, z; }; std::atomic<vector> name = {0};

it says can't initialize initializer list, , when go use in code, says has no members.

name.x = 4.f; name.y = 2.f * name.x; name.z = 0.1f;

an instance of std::atomic<vector> isn't instance of vector. doesn't have x, y, or z members. have (conceptually, internally) instance of vector. can't access . operator because break atomicity, is, like, point of std::atomic. (this why can't use initializer list.)

to access vector stuff, use load() , store():

//atomically load snapshot of name auto name_snapshot = name.load(); //name_snapshot vector instance name_snapshot.x = 4.f; name_snapshot.y = 2.f * name_snapshot.x; name_snapshot.z = 0.1f; //now atomically store it: name.store(name_snapshot);

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