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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "app.h"
#include "process.h"
#include "thread.h"
#include <poll.h>
class FastOS_RingBuffer;
class FastOS_UNIX_IPCHelper : public FastOS_Runnable
{
private:
FastOS_UNIX_IPCHelper(const FastOS_UNIX_IPCHelper&);
FastOS_UNIX_IPCHelper& operator=(const FastOS_UNIX_IPCHelper&);
protected:
FastOS_Mutex _lock;
volatile bool _exitFlag;
FastOS_ApplicationInterface *_app;
FastOS_UNIX_Process::DescriptorHandle _appParentIPCDescriptor;
int _wakeupPipe[2];
bool DoWrite (FastOS_UNIX_Process::DescriptorHandle &desc);
bool DoRead (FastOS_UNIX_Process::DescriptorHandle &desc);
bool SetBlocking (int fileDescriptor, bool doBlock);
void BuildPollCheck (bool isRead, int filedes, FastOS_RingBuffer *buffer, bool *check);
void BuildPollArray(pollfd **fds, unsigned int *nfds, unsigned int *allocnfds);
bool SavePollArray(pollfd *fds, unsigned int nfds);
void PerformAsyncIO (void);
void PerformAsyncIPCIO (void);
void BuildPollChecks(void);
void DeliverMessages (FastOS_RingBuffer *buffer);
void PipeData (FastOS_UNIX_Process *process, FastOS_UNIX_Process::DescriptorType type);
void RemoveClosingProcesses(void);
public:
FastOS_UNIX_IPCHelper (FastOS_ApplicationInterface *app, int appDescriptor);
~FastOS_UNIX_IPCHelper ();
void Run (FastOS_ThreadInterface *thisThread, void *arg) override;
bool SendMessage (FastOS_UNIX_Process *xproc, const void *buffer, int length);
void NotifyProcessListChange ();
void AddProcess (FastOS_UNIX_Process *xproc);
void RemoveProcess (FastOS_UNIX_Process *xproc);
void Exit ();
};
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