Thread::gettid() does not return the ID of the object it is invoked on

[marcuschangarm]

Thread* t1 = new Thread(...);

// get new thread ID
osThreadId id1 = t1->gettid();

// get current thread ID
osThreadId id2 = Thread::gettid();

id1 should be the id of the new thread, t1. Instead id1 == id2.

[0xc0170]

The problem here is we can't overload gettid. We migth need to introduce a new method.

We could have gittid() actually return the instance's thread id, and getCurrentThreadId to do what gettid does now, but that would be breaking change. Let's just introduce getter method for threadid member

[ciarmcom]

ARM Internal Ref: IOTMORF-175

[0xc0170]

cc @LiyouZhou

[daniel-cesarini-tridonic-com]

@0xc0170 @sg- : I am also encountering same issue. Are there plans to change this in near future?
Actually it would be enough to have a method to return _tid variable value from the Thread class, or am I wrong?
Having the gettid() returning the runningThreadId and not the threadOnWhichGettidIsCalled is counter-intuitive.

[pan-]

In C++ 11, APIs applying to the current thread are grouped within the namespace this_thread to avoid confusion between static and member functions. Other functions such as yield or wait or delay_until might also benefits from such construct.

@sg would that be the right approach to tackle that issue on mbed os ?