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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "CobEngine.h"
#include "CobThread.h"
#include "CobInstance.h"
#include "CobFile.h"
#include "System/FileSystem/FileHandler.h"
#include "System/TimeProfiler.h"
CCobEngine* cobEngine = nullptr;
CCobFileHandler* cobFileHandler = nullptr;
/******************************************************************************/
/******************************************************************************/
CR_BIND(CCobEngine, )
CR_REG_METADATA(CCobEngine, (
CR_MEMBER(currentTime),
CR_MEMBER(running),
CR_MEMBER(sleeping),
//always null/empty when saving
CR_IGNORED(wantToRun),
CR_IGNORED(curThread)
))
CCobEngine::CCobEngine()
: curThread(nullptr)
, currentTime(0)
{ }
CCobEngine::~CCobEngine()
{
//Should delete all things that the scheduler knows
do {
while (!running.empty()) {
CCobThread* tmp = running.back();
running.pop_back();
delete tmp;
}
while (!wantToRun.empty()) {
CCobThread* tmp = wantToRun.back();
wantToRun.pop_back();
delete tmp;
}
while (!sleeping.empty()) {
CCobThread* tmp = sleeping.top();
sleeping.pop();
delete tmp;
}
// callbacks may add new threads
} while (!running.empty() || !wantToRun.empty() || !sleeping.empty());
}
CCobFileHandler::~CCobFileHandler()
{
//Free all cobfiles
for (std::map<std::string, CCobFile *>::iterator i = cobFiles.begin(); i != cobFiles.end(); ++i) {
delete i->second;
}
}
//A thread wants to continue running at a later time, and adds itself to the scheduler
void CCobEngine::AddThread(CCobThread *thread)
{
switch (thread->state) {
case CCobThread::Run:
wantToRun.push_back(thread);
break;
case CCobThread::Sleep:
sleeping.push(thread);
break;
default:
LOG_L(L_ERROR, "thread added to scheduler with unknown state (%d)", thread->state);
break;
}
}
void CCobEngine::TickThread(CCobThread* thread)
{
curThread = thread; // for error messages originating in CUnitScript
if (!thread->Tick())
delete thread;
curThread = NULL;
}
void CCobEngine::Tick(int deltaTime)
{
SCOPED_TIMER("CobEngine::Tick");
currentTime += deltaTime;
// Advance all running threads
for (CCobThread* t: running) {
//LOG_L(L_DEBUG, "Now 1running %d: %s", currentTime, (*i)->GetName().c_str());
TickThread(t);
}
// A thread can never go from running->running, so clear the list
// note: if preemption was to be added, this would no longer hold
// however, ta scripts can not run preemptively anyway since there
// isn't any synchronization methods available
running.clear();
// The threads that just ran may have added new threads that should run next tick
std::swap(running, wantToRun);
//Check on the sleeping threads
if (!sleeping.empty()) {
CCobThread* cur = sleeping.top();
while ((cur != NULL) && (cur->GetWakeTime() < currentTime)) {
// Start with removing the executing thread from the queue
sleeping.pop();
//Run forward again. This can quite possibly readd the thread to the sleeping array again
//But it will not interfere since it is guaranteed to sleep > 0 ms
//LOG_L(L_DEBUG, "Now 2running %d: %s", currentTime, cur->GetName().c_str());
if (cur->state == CCobThread::Sleep) {
cur->state = CCobThread::Run;
TickThread(cur);
} else if (cur->state == CCobThread::Dead) {
delete cur;
} else {
LOG_L(L_ERROR, "Sleeping thread strange state %d", cur->state);
}
if (!sleeping.empty())
cur = sleeping.top();
else
cur = NULL;
}
}
}
void CCobEngine::ShowScriptError(const string& msg)
{
if (curThread)
curThread->ShowError(msg);
else
LOG_L(L_ERROR, "%s outside script execution", msg.c_str());
}
/******************************************************************************/
/******************************************************************************/
CCobFile* CCobFileHandler::GetCobFile(const string& name)
{
//Already known?
map<string, CCobFile *>::iterator i;
if ((i = cobFiles.find(name)) != cobFiles.end()) {
return i->second;
}
CFileHandler f(name);
if (!f.FileExists()) {
return NULL;
}
CCobFile *cf = new CCobFile(f, name);
cobFiles[name] = cf;
return cf;
}
CCobFile* CCobFileHandler::ReloadCobFile(const string& name)
{
map<string, CCobFile *>::iterator it = cobFiles.find(name);
if (it == cobFiles.end()) {
return GetCobFile(name);
}
delete it->second;
cobFiles.erase(it);
return GetCobFile(name);
}
const CCobFile* CCobFileHandler::GetScriptAddr(const string& name) const
{
map<string, CCobFile *>::const_iterator it = cobFiles.find(name);
if (it != cobFiles.end()) {
return it->second;
}
return NULL;
}
/******************************************************************************/
/******************************************************************************/
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