3D-printing/OrcaSlicer
1
0
Fork 0
mirror of https://github.com/SoftFever/OrcaSlicer.git synced 2025-07-18 04:08:02 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

drop deprecated TBB components (#6590)

Browse source 
Quite some time ago, many of the TBB components were deprecated in favor
of their near-equivalents in the STL or, in the case of task_scheduler_init,
were broken up and reconstituted under a less ad-hoc logic. Every time a header
file marked deprecated gets included, a rather loud warning is emitted, which
leads to a complete TBB's domination over the stderr stream during build time,
making it harder to notice _legitimate_ warnings.

Instead of merely muting the output with TBB_SUPPRESS_DEPRECATED_MESSAGES,
perform a genuine migration away from the deprecated components with the added
benefit of achieving a source compatibility with oneTBB, the successor to TBB
which has dropped the deprecated API for good.

What got replaced for what?

| Deprecated				| Replacement					|
| ------------------------------------- | --------------------------------------------- |
| `tbb::atomic`				| `std::atomic`					|
| `tbb::mutex`				| `std::mutex`					|
| `tbb::mutex::scoped_lock`		| `std::scoped_lock<std::mutex>`		|
| `tbb::mutex::scoped_lock` (empty)	| `std::unique_lock<std::mutex>` (deferred)	|
| `tbb::task_scheduler_init`		| `tbb::global_control`				|
| `tbb::this_thread`			| `std::this_thread`				|

Signed-off-by: Roman Beranek <roman.beranek@prusa3d.com>
This commit is contained in:
Roman Beránek 2021-06-23 11:48:48 +02:00 • committed by GitHub
parent 7a7108b2ad
commit e13535f822
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
18 changed files with 80 additions and 95 deletions
Download patch file Download diff file Expand all files Collapse all files

12
src/libslic3r/Thread.cpp
View file

@ -9,10 +9,10 @@
#include <atomic>
#include <condition_variable>
#include <mutex>
#include <thread>
#include <tbb/global_control.h>
#include <tbb/parallel_for.h>
#include <tbb/tbb_thread.h>
#include <tbb/task_arena.h>
#include <tbb/task_scheduler_init.h>
#include "Thread.hpp"
@ -206,13 +206,13 @@ void name_tbb_thread_pool_threads()
nthreads = 1;
#endif
if (nthreads != nthreads_hw)
new tbb::task_scheduler_init(int(nthreads));
if (nthreads != nthreads_hw)
tbb::global_control(tbb::global_control::max_allowed_parallelism, nthreads);
std::atomic<size_t> nthreads_running(0);
std::condition_variable cv;
std::mutex cv_m;
auto master_thread_id = tbb::this_tbb_thread::get_id();
auto master_thread_id = std::this_thread::get_id();
tbb::parallel_for(
tbb::blocked_range<size_t>(0, nthreads, 1),
[&nthreads_running, nthreads, &master_thread_id, &cv, &cv_m](const tbb::blocked_range<size_t> &range) {
@ -226,7 +226,7 @@ void name_tbb_thread_pool_threads()
std::unique_lock<std::mutex> lk(cv_m);
cv.wait(lk, [&nthreads_running, nthreads]{return nthreads_running == nthreads;});
}
auto thread_id = tbb::this_tbb_thread::get_id();
auto thread_id = std::this_thread::get_id();
if (thread_id == master_thread_id) {
// The calling thread runs the 0'th task.
assert(range.begin() == 0);