After removal of `MP_MUTEX_RECURSIVE` from vdpau.c there are no more
clients of recursive mutex. Remove all the code related to it. This
commit can be reverted if in the future it is needed again. For now
let's not keep dead code.
On Windows and any other platform where cpu-time is unsuported,
previously the cpu-time was reported as 0, and now it's omitted
(at the perf-info property native value).
Code which process this report, like stats.lua, could not distinguish
between 0 which was due to unsupported platform, and "real" 0 which
indicates zero cpu activity in this poll-period.
In stats.lua this resulted in a whole lot of empty cpu graphs,
including one for every loaded script.
Now cpu-time is excluded from the report on unsupported platforms.
Real-time is obviously still being reported where requested.
Implementation wise, this is slightly hacky, by literally only
excluding the cpu-time nodes from the report itself, while keeping
all the other cpu-tinme code intact.
A more correct solution might be to identify support at compile
(configure) time, and no-op the relevant code if needed.
However, stats.c is already hacky in parts, and there's no real cost
to keeping the code active even if the result is excluded at the
report, and it's also way simpler and less bug prone. So be it.
This change removes convoluted core thread extraction through dispatch
added in 500ce69a06.
Currently we fully control this thread, create it and join, there is no
reason not to keep the handle of it in the player context.
As a bonus to code simplification this also fixes thread handle leak on
Windows.
Fixes: #14472
This change essentially removes mp_thread_self() and instead add
mp_thread_id to track threads and have ability to query current thread
id during runtime.
This will be useful for upcoming win32 implementation, where accessing
thread handle is different than on pthreads. Greatly reduces complexity.
Otherweis locked map of tid <-> handle is required which is completely
unnecessary for all mpv use-cases.
Note that this is the mp_thread_id, not to confuse with system tid. For
example on threads-posix implementation it is simply pthread_t.
Kacper Michajłow