gdipp_lib/scoped_rw_lock.cpp

   1 #include "stdafx.h"
   2 #include "scoped_rw_lock.h"
   3
   4 namespace gdipp
   5 {
   6
   7 std::vector<SRWLOCK> scoped_rw_lock::_srws;
   8
   9 void scoped_rw_lock::initialize()
  10 {
  11         _srws.resize(LAST_MONITOR_LOCATION);
  12         for (int i = 0; i < LAST_MONITOR_LOCATION; ++i)
  13                 InitializeSRWLock(&_srws[i]);
  14 }
  15
  16 scoped_rw_lock::scoped_rw_lock(MONITOR_LOCATION cs_location, bool is_shared)
  17 {
  18         _curr_srw = &_srws[cs_location];
  19         _is_shared = is_shared;
  20
  21         if (is_shared)
  22                 AcquireSRWLockShared(_curr_srw);
  23         else
  24                 AcquireSRWLockExclusive(_curr_srw);
  25 }
  26
  27 scoped_rw_lock::~scoped_rw_lock()
  28 {
  29         if (_is_shared)
  30                 ReleaseSRWLockShared(_curr_srw);
  31         else
  32                 ReleaseSRWLockExclusive(_curr_srw);
  33 }
  34
  35 }