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/*******************************************************************************
* Goggles Audio Player Library *
********************************************************************************
* Copyright (C) 2010-2021 by Sander Jansen. All Rights Reserved *
* --- *
* This program 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. *
* *
* This program 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 this program. If not, see http://www.gnu.org/licenses. *
********************************************************************************/
#include "ap_defs.h"
#include "ap_event.h"
#include "ap_thread_queue.h"
namespace ap {
ThreadQueue::ThreadQueue() : EventQueue() {
}
ThreadQueue::~ThreadQueue() {
FXASSERT(head==nullptr);
FXASSERT(tail==nullptr);
}
FXbool ThreadQueue::init() {
return sfifo.create();
}
void ThreadQueue::free() {
flush();
FXASSERT(head==nullptr);
FXASSERT(tail==nullptr);
sfifo.close();
}
void ThreadQueue::post(Event*event,FXint where) {
if (where==Flush) {
mfifo.lock();
Event * h = head;
event->next=nullptr;
head = tail = event;
sfifo.set();
mfifo.unlock();
/// cleanup outside the fifo lock!
while(h) {
event = h;
h = h->next;
event->next = nullptr;
Event::unref(event);
}
}
else if (where==Back) {
mfifo.lock();
if (tail) tail->next = event;
event->next=nullptr;
tail = event;
if (head==nullptr) {
head=tail;
sfifo.set();
}
mfifo.unlock();
}
else {
//fxmessage("posting event\n");
mfifo.lock();
event->next=head;
head=event;
sfifo.set();
if (tail==nullptr) {
tail=head;
}
mfifo.unlock();
}
}
Event * ThreadQueue::pop() {
Event * event=nullptr;
mfifo.lock();
if (head) {
event=head;
head=head->next;
event->next=nullptr;
if (head==nullptr) {
tail=nullptr;
sfifo.clear();
}
}
else {
sfifo.clear();
}
mfifo.unlock();
return event;
}
Event * ThreadQueue::wait() {
Event * event = pop();
if (event==nullptr) {
sfifo.wait();
event = pop();
FXASSERT(event);
}
return event;
}
Event * ThreadQueue::wait_for(FXuchar event_type) {
Event * event = nullptr;
do {
mfifo.lock();
sfifo.clear();
if (head) {
if (head->type == event_type) {
event = head;
head = head->next;
event->next = nullptr;
if (head==nullptr) tail=nullptr;
}
mfifo.unlock();
return event;
}
mfifo.unlock();
sfifo.wait();
}
while(1);
return nullptr;
}
FXbool ThreadQueue::checkAbort() {
FXScopedMutex lock(mfifo);
if (head && (head->type&0x80))
return true;
sfifo.clear();
return false;
}
void ThreadQueue::flush() {
mfifo.lock();
Event * h = head;
head=tail=nullptr;
sfifo.clear();
mfifo.unlock();
while(h) {
Event * event = h;
h = h->next;
event->next = nullptr;
Event::unref(event);
}
}
FXbool ThreadQueue::peek_if_not(FXuchar requested) {
FXbool match;
mfifo.lock();
sfifo.clear();
if (head && head->type!=requested)
match=true;
else
match=false;
mfifo.unlock();
return match;
}
/// Pop typed event
Event * ThreadQueue::pop_if_not(FXuchar r1,FXuchar r2){
Event * event = nullptr;
mfifo.lock();
sfifo.clear();
if (head) {
if ((head->type!=r1) && (head->type!=r2)) {
event = head;
head = head->next;
event->next = nullptr;
if (head==nullptr) tail=nullptr;
}
}
mfifo.unlock();
return event;
}
}
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