130 lines
2.7 KiB
C++
130 lines
2.7 KiB
C++
#pragma once
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#include <mutex>
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#include <atomic>
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#include <deque>
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#include <map>
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#include <string>
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struct map_string_less : public std::binary_function<std::string,std::string,bool>
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{
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bool operator()(const std::string& a,const std::string& b) const
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{
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return a.compare(b) < 0;
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}
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};
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class ReferenceCounter {
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public:
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mutable std::mutex m_mutex;
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void setRefCount(int rc) {
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refCount.store(rc);
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}
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void decRefCount() {
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refCount.store(refCount.load()-1);
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}
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int getRefCount() {
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return refCount.load();
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}
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protected:
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std::atomic_int refCount;
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};
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template<class BufferType = ReferenceCounter>
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class ReBuffer {
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public:
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BufferType *getBuffer() {
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BufferType* buf = NULL;
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for (outputBuffersI = outputBuffers.begin(); outputBuffersI != outputBuffers.end(); outputBuffersI++) {
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if ((*outputBuffersI)->getRefCount() <= 0) {
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return (*outputBuffersI);
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}
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}
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buf = new BufferType();
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outputBuffers.push_back(buf);
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return buf;
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}
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void purge() {
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while (!outputBuffers.empty()) {
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BufferType *ref = outputBuffers.front();
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outputBuffers.pop_front();
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delete ref;
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}
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}
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private:
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std::deque<BufferType*> outputBuffers;
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typename std::deque<BufferType*>::iterator outputBuffersI;
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};
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class IOThread {
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public:
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virtual void setup() {
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};
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virtual void init() {
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};
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virtual void onBindOutput(std::string name, void* threadQueue) {
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};
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virtual void onBindInput(std::string name, void* threadQueue) {
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};
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#ifdef __APPLE__
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virtual void *threadMain() {
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return 0;
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};
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static void *pthread_helper(void *context) {
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return ((IOThread *) context)->threadMain();
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};
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#else
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virtual void threadMain() {
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};
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#endif
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virtual void terminate() {
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};
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void setInputQueue(std::string qname, void *threadQueue) {
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input_queues[qname] = threadQueue;
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this->onBindInput(qname, threadQueue);
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};
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void *getInputQueue(std::string qname) {
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return input_queues[qname];
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};
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void setOutputQueue(std::string qname, void *threadQueue) {
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output_queues[qname] = threadQueue;
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this->onBindOutput(qname, threadQueue);
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};
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void *getOutputQueue(std::string qname) {
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return output_queues[qname];
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};
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protected:
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std::map<std::string, void *, map_string_less> input_queues;
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std::map<std::string, void *, map_string_less> output_queues;
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};
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