void Core::Suspend()
{
auto tid = this_thread::get_id();
// If recursive, just increment the count
{
lock_guard<mutex> lock(d->AccessMutex);
if (d->df_suspend_depth > 0 && d->df_suspend_thread == tid)
{
d->df_suspend_depth++;
return;
}
}
// put the condition on a stack
Core::Cond *nc = new Core::Cond();
{
lock_guard<mutex> lock2(d->StackMutex);
d->suspended_tools.push(nc);
}
// wait until Core::Update() wakes up the tool
{
lock_guard<mutex> lock(d->AccessMutex);
nc->Lock(&d->AccessMutex);
assert(d->df_suspend_depth == 0);
d->df_suspend_thread = tid;
d->df_suspend_depth = 1;
}
}
// should always be from simulation thread!
int Core::Update()
{
if(!started)
Init();
if(errorstate)
return -1;
// notify all the plugins that a game tick is finished
plug_mgr->OnUpdate();
// wake waiting tools
// do not allow more tools to join in while we process stuff here
StackMutex->lock();
while (!suspended_tools.empty())
{
Core::Cond * nc = suspended_tools.top();
suspended_tools.pop();
AccessMutex->lock();
// wake tool
nc->Unlock();
// wait for tool to wake us
core_cond->Lock(AccessMutex);
AccessMutex->unlock();
// destroy condition
delete nc;
}
StackMutex->unlock();
return 0;
};
// should always be from simulation thread!
int Core::Update()
{
if(!started)
Init();
if(errorstate)
return -1;
// detect if the game was loaded or unloaded in the meantime
void *new_wdata = NULL;
if (df::global::world) {
df::world_data *wdata = df::global::world->world_data;
// when the game is unloaded, world_data isn't deleted, but its contents are
if (wdata && !wdata->sites.empty())
new_wdata = wdata;
}
if (new_wdata != last_world_data_ptr) {
last_world_data_ptr = new_wdata;
plug_mgr->OnStateChange(new_wdata ? SC_GAME_LOADED : SC_GAME_UNLOADED);
}
// detect if the viewscreen changed
if (df::global::gview)
{
df::viewscreen *screen = &df::global::gview->view;
while (screen->child)
screen = screen->child;
if (screen != top_viewscreen)
{
top_viewscreen = screen;
plug_mgr->OnStateChange(SC_VIEWSCREEN_CHANGED);
}
}
// notify all the plugins that a game tick is finished
plug_mgr->OnUpdate();
// wake waiting tools
// do not allow more tools to join in while we process stuff here
StackMutex->lock();
while (!suspended_tools.empty())
{
Core::Cond * nc = suspended_tools.top();
suspended_tools.pop();
AccessMutex->lock();
// wake tool
nc->Unlock();
// wait for tool to wake us
core_cond->Lock(AccessMutex);
AccessMutex->unlock();
// destroy condition
delete nc;
}
StackMutex->unlock();
return 0;
};
void Core::Suspend()
{
Core::Cond * nc = new Core::Cond();
// put the condition on a stack
StackMutex->lock();
suspended_tools.push(nc);
StackMutex->unlock();
// wait until Core::Update() wakes up the tool
AccessMutex->lock();
nc->Lock(AccessMutex);
AccessMutex->unlock();
}
// should always be from simulation thread!
int Core::Update()
{
if(errorstate)
return -1;
color_ostream_proxy out(con);
// Pretend this thread has suspended the core in the usual way,
// and run various processing hooks.
{
CoreSuspendClaimer suspend(true);
// Initialize the core
bool first_update = false;
if(!started)
{
first_update = true;
Init();
if(errorstate)
return -1;
Lua::Core::Reset(con, "core init");
}
doUpdate(out, first_update);
}
// wake waiting tools
// do not allow more tools to join in while we process stuff here
lock_guard<mutex> lock_stack(d->StackMutex);
while (!d->suspended_tools.empty())
{
Core::Cond * nc = d->suspended_tools.top();
d->suspended_tools.pop();
lock_guard<mutex> lock(d->AccessMutex);
// wake tool
nc->Unlock();
// wait for tool to wake us
d->core_cond.Lock(&d->AccessMutex);
// verify
assert(d->df_suspend_depth == 0);
// destroy condition
delete nc;
// check lua stack depth
Lua::Core::Reset(out, "suspend");
}
return 0;
};
