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CancelToken.cpp
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47 lines (38 loc) · 957 Bytes
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#include "precompiled_headers.h"
#include "libinstall/CancelToken.h"
CancelToken::CancelToken()
: m_refCount(new int(1))
{
m_token = ::CreateEvent(NULL, TRUE /*manualReset*/, FALSE /*initialState*/, NULL /*name*/);
}
CancelToken::CancelToken(const CancelToken& copy)
{
m_refCount = copy.m_refCount;
(*m_refCount)++;
m_token = copy.m_token;
}
CancelToken& CancelToken::operator=(CancelToken& other)
{
this->~CancelToken();
m_refCount = other.m_refCount;
(*m_refCount)++;
m_token = other.m_token;
return *this;
}
CancelToken::~CancelToken()
{
(*m_refCount)--;
if (0 == *m_refCount) {
::CloseHandle(m_token);
delete m_refCount;
m_refCount = NULL;
}
}
BOOL CancelToken::isSignalled() const
{
return (WAIT_OBJECT_0 == WaitForSingleObject(m_token, 0));
}
void CancelToken::triggerCancel()
{
SetEvent(m_token);
}