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/*
* This file is part of RawTherapee.
*
* Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
*
* RawTherapee is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* RawTherapee is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with RawTherapee. If not, see <https://www.gnu.org/licenses/>.
*/
#include <memory>
#include <set>
#include "cachemanager.h"
#include "filebrowserentry.h"
#include "previewloader.h"
#include "guiutils.h"
#include "threadutils.h"
#ifdef _OPENMP
#include <omp.h>
#endif
#define DEBUG(format,args...)
//#define DEBUG(format,args...) printf("PreviewLoader::%s: " format "\n", __FUNCTION__, ## args)
class PreviewLoader::Impl :
public rtengine::NonCopyable
{
public:
struct Job {
Job(int dir_id, const Glib::ustring& dir_entry, PreviewLoaderListener* listener):
dir_id_(dir_id),
dir_entry_(dir_entry),
listener_(listener)
{}
Job():
dir_id_(0),
listener_(nullptr)
{}
int dir_id_;
Glib::ustring dir_entry_;
PreviewLoaderListener* listener_;
};
/* Issue 2406
struct OutputJob
{
bool complete;
int dir_id;
PreviewLoaderListener* listener;
FileBrowserEntry* fdn;
};
*/
struct JobCompare {
bool operator()(const Job& lhs, const Job& rhs) const
{
if ( lhs.dir_id_ == rhs.dir_id_ ) {
return lhs.dir_entry_ < rhs.dir_entry_;
}
return lhs.dir_id_ < rhs.dir_id_;
}
};
typedef std::set<Job, JobCompare> JobSet;
Impl(): nConcurrentThreads(0)
{
#ifdef _OPENMP
int threadCount = omp_get_num_procs();
#else
int threadCount = 2;
#endif
threadPool_.reset(new Glib::ThreadPool(threadCount, 0));
}
std::unique_ptr<Glib::ThreadPool> threadPool_;
MyMutex mutex_;
JobSet jobs_;
gint nConcurrentThreads;
// Issue 2406 std::vector<OutputJob *> output_;
void processNextJob()
{
Job j;
// Issue 2406 OutputJob *oj;
{
MyMutex::MyLock lock(mutex_);
// nothing to do; could be jobs have been removed
if ( jobs_.empty() ) {
DEBUG("processing: nothing to do");
return;
}
// copy and remove front job
j = *jobs_.begin();
jobs_.erase(jobs_.begin());
DEBUG("processing %s", j.dir_entry_.c_str());
DEBUG("%d job(s) remaining", jobs_.size());
/* Issue 2406
oj = new OutputJob();
oj->complete = false;
oj->dir_id = j.dir_id_;
oj->listener = j.listener_;
oj->fdn = 0;
output_.push_back(oj);
*/
}
g_atomic_int_inc (&nConcurrentThreads); // to detect when last thread in pool has run out
// unlock and do processing; will relock on block exit, then call listener
// if something got
// Issue 2406 FileBrowserEntry* fdn = 0;
try {
Thumbnail* tmb = nullptr;
{
if (Glib::file_test(j.dir_entry_, Glib::FILE_TEST_EXISTS)) {
tmb = cacheMgr->getEntry(j.dir_entry_);
}
}
if ( tmb ) {
DEBUG("Preview Ready\n");
j.listener_->previewReady(j.dir_id_, new FileBrowserEntry(tmb, j.dir_entry_));
// Issue 2406 fdn = new FileBrowserEntry(tmb,j.dir_entry_);
}
} catch (Glib::Error &e) {} catch(...) {}
/* Issue 2406
{
// the purpose of the output_ vector is to deliver the previewReady() calls in the same
// order as we got the jobs from the jobs_ queue.
MyMutex::MyLock lock(mutex_);
oj->fdn = fdn;
oj->complete = true;
while (output_.size() > 0 && output_.front()->complete) {
oj = output_.front();
if (oj->fdn) {
oj->listener->previewReady(oj->dir_id,oj->fdn);
}
output_.erase(output_.begin());
delete oj;
}
}
*/
bool last = g_atomic_int_dec_and_test (&nConcurrentThreads);
// signal at end
if (last && jobs_.empty()) {
j.listener_->previewsFinished(j.dir_id_);
}
}
};
PreviewLoader::PreviewLoader():
impl_(new Impl())
{
}
PreviewLoader::~PreviewLoader() {
delete impl_;
}
PreviewLoader* PreviewLoader::getInstance()
{
static PreviewLoader instance_;
return &instance_;
}
void PreviewLoader::add(int dir_id, const Glib::ustring& dir_entry, PreviewLoaderListener* l)
{
// somebody listening?
if ( l != nullptr ) {
{
MyMutex::MyLock lock(impl_->mutex_);
// create a new job and append to queue
DEBUG("saving job %s", dir_entry.c_str());
impl_->jobs_.insert(Impl::Job(dir_id, dir_entry, l));
}
// queue a run request
DEBUG("adding run request %s", dir_entry.c_str());
impl_->threadPool_->push(sigc::mem_fun(*impl_, &PreviewLoader::Impl::processNextJob));
}
}
void PreviewLoader::removeAllJobs()
{
DEBUG("stop %d", impl_->nConcurrentThreads);
MyMutex::MyLock lock(impl_->mutex_);
impl_->jobs_.clear();
}
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