src/system/kernel/device_manager/IOScheduler.cpp

   1 /*
   2  * Copyright 2010, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6
   7 #include "IOScheduler.h"
   8
   9 #include <stdlib.h>
  10 #include <string.h>
  11
  12 #include "IOSchedulerRoster.h"
  13
  14
  15 IOScheduler::IOScheduler(DMAResource* resource)
  16         :
  17         fDMAResource(resource),
  18         fName(NULL),
  19         fID(IOSchedulerRoster::Default()->NextID()),
  20         fIOCallback(NULL),
  21         fIOCallbackData(NULL),
  22         fSchedulerRegistered(false)
  23 {
  24 }
  25
  26
  27 IOScheduler::~IOScheduler()
  28 {
  29         if (fSchedulerRegistered)
  30                 IOSchedulerRoster::Default()->RemoveScheduler(this);
  31
  32         free(fName);
  33 }
  34
  35
  36 status_t
  37 IOScheduler::Init(const char* name)
  38 {
  39         fName = strdup(name);
  40         if (fName == NULL)
  41                 return B_NO_MEMORY;
  42
  43         IOSchedulerRoster::Default()->AddScheduler(this);
  44         fSchedulerRegistered = true;
  45
  46         return B_OK;
  47 }
  48
  49
  50 void
  51 IOScheduler::SetCallback(IOCallback& callback)
  52 {
  53         SetCallback(&IOCallback::WrapperFunction, &callback);
  54 }
  55
  56
  57 void
  58 IOScheduler::SetCallback(io_callback callback, void* data)
  59 {
  60         fIOCallback = callback;
  61         fIOCallbackData = data;
  62 }
  63
  64
  65 void
  66 IOScheduler::SetDeviceCapacity(off_t deviceCapacity)
  67 {
  68 }
  69
  70
  71 void
  72 IOScheduler::MediaChanged()
  73 {
  74 }