110 lines
3.2 KiB
Text
110 lines
3.2 KiB
Text
// Copyright (c) 2014, Thomas Goyne <plorkyeran@aegisub.org>
|
|
//
|
|
// Permission to use, copy, modify, and distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice appear in all copies.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
//
|
|
// Aegisub Project http://www.aegisub.org/
|
|
|
|
#include "libaegisub/dispatch.h"
|
|
|
|
#include <dispatch/dispatch.h>
|
|
#include <mutex>
|
|
|
|
namespace {
|
|
using namespace agi::dispatch;
|
|
std::function<void (Thunk)> invoke_main;
|
|
|
|
struct OSXQueue : Queue {
|
|
virtual void DoSync(Thunk thunk)=0;
|
|
};
|
|
|
|
struct MainQueue final : OSXQueue {
|
|
void DoInvoke(Thunk thunk) override { invoke_main(thunk); }
|
|
|
|
void DoSync(Thunk thunk) override {
|
|
std::mutex m;
|
|
std::condition_variable cv;
|
|
std::unique_lock<std::mutex> l(m);
|
|
std::exception_ptr e;
|
|
bool done = false;
|
|
invoke_main([&]{
|
|
std::unique_lock<std::mutex> l(m);
|
|
try {
|
|
thunk();
|
|
}
|
|
catch (...) {
|
|
e = std::current_exception();
|
|
}
|
|
done = true;
|
|
cv.notify_all();
|
|
});
|
|
cv.wait(l, [&]{ return done; });
|
|
if (e) std::rethrow_exception(e);
|
|
}
|
|
};
|
|
|
|
struct GCDQueue final : OSXQueue {
|
|
dispatch_queue_t queue;
|
|
GCDQueue(dispatch_queue_t queue) : queue(queue) { }
|
|
~GCDQueue() { dispatch_release(queue); }
|
|
|
|
void DoInvoke(Thunk thunk) override {
|
|
dispatch_async(queue, ^{
|
|
try {
|
|
thunk();
|
|
}
|
|
catch (...) {
|
|
auto e = std::current_exception();
|
|
invoke_main([=] { std::rethrow_exception(e); });
|
|
}
|
|
});
|
|
}
|
|
|
|
void DoSync(Thunk thunk) override {
|
|
std::exception_ptr e;
|
|
std::exception_ptr *e_ptr = &e;
|
|
dispatch_sync(queue, ^{
|
|
try {
|
|
thunk();
|
|
}
|
|
catch (...) {
|
|
*e_ptr = std::current_exception();
|
|
}
|
|
});
|
|
if (e) std::rethrow_exception(e);
|
|
}
|
|
};
|
|
}
|
|
|
|
namespace agi { namespace dispatch {
|
|
void Init(std::function<void (Thunk)> invoke_main) {
|
|
::invoke_main = std::move(invoke_main);
|
|
}
|
|
|
|
void Queue::Async(Thunk thunk) { DoInvoke(std::move(thunk)); }
|
|
void Queue::Sync(Thunk thunk) { static_cast<OSXQueue *>(this)->DoSync(std::move(thunk)); }
|
|
|
|
Queue& Main() {
|
|
static MainQueue q;
|
|
return q;
|
|
}
|
|
|
|
Queue& Background() {
|
|
static GCDQueue q(dispatch_get_global_queue(0, DISPATCH_QUEUE_PRIORITY_DEFAULT));
|
|
return q;
|
|
}
|
|
|
|
std::unique_ptr<Queue> Create() {
|
|
return std::unique_ptr<Queue>(new GCDQueue(dispatch_queue_create("Aegisub worker queue",
|
|
DISPATCH_QUEUE_SERIAL)));
|
|
}
|
|
} }
|