include/monitor/SHMReader.h

   1 /** Aesalon, a tool to visualize program behaviour in real time.
   2         Copyright (C) 2009-2011, Aesalon development team.
   3
   4         Aesalon is distributed under the terms of the GNU GPLv3. See
   5         the included file LICENSE for more information.
   6
   7         @file include/monitor/SHMReader.h
   8 */
   9
  10 #ifndef AesalonMonitor_SHMReader_H
  11 #define AesalonMonitor_SHMReader_H
  12
  13 #include <stdint.h>
  14
  15 #include <string>
  16 #include <vector>
  17
  18 #include "shm/Header.h"
  19
  20 namespace Monitor {
  21
  22 class SHMReader {
  23 private:
  24         int m_fd;
  25         std::string m_shmName;
  26
  27         SHM::Header *m_header;
  28
  29         uint8_t *m_zoneUseData;
  30
  31         typedef std::vector<uint8_t *> ZoneList;
  32         ZoneList m_zoneList;
  33 public:
  34         SHMReader();
  35         ~SHMReader();
  36
  37         uint32_t zoneCount();
  38         int32_t zoneWithData();
  39
  40         void waitForPacket();
  41
  42         void readData(uint32_t zoneID, void *buffer, uint32_t size);
  43 private:
  44         uint8_t *getZone(uint32_t id);
  45         void *mapRegion(uint32_t start, uint32_t size);
  46         void unmapRegion(void *data, uint32_t size);
  47         void setupHeader();
  48         void setupConfiguration();
  49         void setupZones();
  50 };
  51
  52 } // namespace Monitor
  53
  54 #endif