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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::Start(void)
{
// Initialize the thread:
m_Thread = std::thread(&cIsThread::Entrypoint, this);
// Notify the thread that initialization is complete and it can run its code safely:
m_Initialisation.Set();
}
void cIsThread::Stop(void)
{
m_ShouldTerminate = true;
{
LOGD("Waiting for the %s thread to finish", m_ThreadName.c_str());
if (m_Thread.joinable())
{
m_Thread.join();
}
LOGD("The %s thread finished", m_ThreadName.c_str());
}
m_ShouldTerminate = false;
}
void cIsThread::Entrypoint(void)
{
// Apply thread naming:
SetThreadName();
// Wait for initialisation:
m_Initialisation.Wait();
try
{
Execute();
}
catch (const std::exception & Oops)
{
LOGERROR("Thread %s faulted with standard exception: %s", m_ThreadName.c_str(), Oops.what());
std::abort();
}
catch (...)
{
LOGERROR("Thread %s faulted with unknown exception!", m_ThreadName.c_str());
std::abort();
}
}
void cIsThread::SetThreadName() const
{
#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 */
if (m_ThreadName.empty())
{
return;
}
#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)
const DWORD NAME_EXCEPTION = 0x406D1388;
const THREADNAME_INFO Name = {0x1000, m_ThreadName.c_str(), static_cast<DWORD>(-1), 0};
__try
{
RaiseException(NAME_EXCEPTION, 0, sizeof(Name) / sizeof(ULONG_PTR), reinterpret_cast<const ULONG_PTR *>(&Name));
}
__except (EXCEPTION_EXECUTE_HANDLER)
{
}
#endif
}
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