88 lines
1.8 KiB
C++
88 lines
1.8 KiB
C++
#ifndef _WDL_SHM_CONNECTION_H_
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#define _WDL_SHM_CONNECTION_H_
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#ifdef _WIN32
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#include <windows.h>
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#else
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#include "swell/swell.h"
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#include "swell/swell-internal.h"
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#endif
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#include <time.h>
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#include "wdlstring.h"
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#include "wdltypes.h"
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#include "queue.h"
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class WDL_SHM_Connection
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{
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public:
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WDL_SHM_Connection(bool whichChan, // a true con connects to a false con -- note on SHM false should be created FIRST.
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const char *uniquestring, // identify
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int shmsize=262144, // bytes, whoever opens first decides
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int timeout_sec=0,
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int extra_flags=0 // on posix, set 1 for the master to create a .lock file as well
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);
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~WDL_SHM_Connection();
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int Run(); // call as often as possible, returns <0 error, >0 if did something
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bool WantSendKeepAlive(); // called when it needs a keepalive to be sent (may be never, or whatever interval it decides)
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// wait for this if you want to see when data comes in
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HANDLE GetWaitEvent()
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{
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#ifdef _WIN32
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return m_events[m_whichChan];
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#else
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return m_waitevt;
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#endif
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}
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// receiving and sending data
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WDL_Queue recv_queue;
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WDL_Queue send_queue;
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private:
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int m_timeout_sec;
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time_t m_last_recvt;
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int m_timeout_cnt;
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WDL_String m_tempfn;
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int m_whichChan; // which channel we read from
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#ifdef _WIN32
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HANDLE m_file, m_filemap;
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HANDLE m_events[2]; // [m_whichChan] set when the other side did something useful
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HANDLE m_lockmutex;
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unsigned char *m_mem;
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#else
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time_t m_next_keepalive;
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int m_sockbufsize;
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int m_rdbufsize;
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char *m_rdbuf; // m_rdbufsize
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int m_listen_socket;
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int m_socket;
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HANDLE m_waitevt;
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void *m_sockaddr;
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void acquireListener();
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WDL_String m_lockfn;
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int m_lockhandle;
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#endif
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};
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#endif
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