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// IsThread.cpp
// Implements the cIsThread class representing an OS-independent wrapper for a class that implements a thread.
#include "Globals.h"
#include "IsThread.h"
////////////////////////////////////////////////////////////////////////////////
// cIsThread:
cIsThread::cIsThread(AString && a_ThreadName) :
m_ShouldTerminate(false),
m_ThreadName(std::move(a_ThreadName))
{
}
cIsThread::~cIsThread()
{
Stop();
}
void cIsThread::DoExecute(void)
{
#if defined(_MSC_VER) && !defined(NDEBUG)
/* Sets the name of this thread.
(When in MSVC, the debugger provides "thread naming" by catching special exceptions)
Code adapted from MSDN: https://msdn.microsoft.com/en-us/library/xcb2z8hs.aspx */
#pragma pack(push, 8)
struct THREADNAME_INFO
{
DWORD dwType; // Must be 0x1000.
LPCSTR szName; // Pointer to name (in user addr space).
DWORD dwThreadID; // Thread ID (-1 = caller thread).
DWORD dwFlags; // Reserved for future use, must be zero.
};
#pragma pack(pop)
if (!m_ThreadName.empty())
{
const DWORD NAME_EXCEPTION = 0x406D1388;
const THREADNAME_INFO Name = { 0x1000, m_ThreadName.c_str(), -1, 0 };
__try
{
RaiseException(NAME_EXCEPTION, 0, sizeof(Name) / sizeof(ULONG_PTR), reinterpret_cast<const ULONG_PTR *>(&Name));
}
__except (EXCEPTION_EXECUTE_HANDLER)
{
}
}
#endif
m_evtStart.Wait();
Execute();
}
bool cIsThread::Start(void)
{
try
{
// Initialize the thread:
m_Thread = std::thread(&cIsThread::DoExecute, this);
// Notify the thread that initialization is complete and it can run its code safely:
m_evtStart.Set();
return true;
}
catch (const std::system_error & a_Exception)
{
LOGERROR("cIsThread::Start error %i: could not construct thread %s; %s", a_Exception.code().value(), m_ThreadName.c_str(), a_Exception.code().message().c_str());
return false;
}
}
void cIsThread::Stop(void)
{
m_ShouldTerminate = true;
Wait();
m_ShouldTerminate = false;
}
bool cIsThread::Wait(void)
{
LOGD("Waiting for the %s thread to finish", m_ThreadName.c_str());
if (m_Thread.joinable())
{
try
{
m_Thread.join();
return true;
}
catch (const std::system_error & a_Exception)
{
LOGERROR("%s error %i: could not join the %s thread; %s", __FUNCTION__, a_Exception.code().value(), m_ThreadName.c_str(), a_Exception.code().message().c_str());
return false;
}
}
LOGD("The %s thread finished", m_ThreadName.c_str());
return true;
}
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