pollevent.hh revision 2 
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2810915Sandreas.sandberg@arm.com
2910915Sandreas.sandberg@arm.com#ifndef __POLLEVENT_H__
3010915Sandreas.sandberg@arm.com#define __POLLEVENT_H__
3110915Sandreas.sandberg@arm.com
32#include <vector>
33#include <poll.h>
34#include "universe.hh"
35
36class PollEvent
37{
38  private:
39    friend class PollQueue;
40
41  protected:
42    pollfd pfd;
43    PollQueue *queue;
44    bool enabled;
45
46  public:
47    PollEvent(int fd, int event);
48    virtual ~PollEvent();
49
50    void disable();
51    void enable();
52    virtual void process(int revent) = 0;
53};
54
55class PollQueue
56{
57  private:
58    typedef std::vector<PollEvent *> eventvec_t;
59    eventvec_t events;
60
61    pollfd *poll_fds;
62    int max_size;
63    int num_fds;
64
65  public:
66    PollQueue();
67    ~PollQueue();
68
69    void copy();
70    void remove(PollEvent *event);
71    void schedule(PollEvent *event);
72    void service();
73
74  protected:
75    static bool handler;
76    static struct sigaction oldio;
77    static struct sigaction oldalrm;
78
79  public:
80    static void setupAsyncIO(int fd, bool set);
81    static void handleIO(int);
82    static void handleALRM(int);
83    static void removeHandler();
84    static void setupHandler();
85};
86
87extern PollQueue pollQueue;
88
89#endif // __POLLEVENT_H__
90