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// file : odb/details/win32/thread.cxx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#include <process.h> // _beginthreadex, _endthreadex
#include <memory> // std::auto_ptr
#include <odb/details/win32/thread.hxx>
#include <odb/details/win32/exceptions.hxx>
unsigned int __stdcall
odb_thread_thunk (void* arg)
{
odb::details::thread::thread_thunk (arg);
_endthreadex (0);
return 0;
}
namespace odb
{
namespace details
{
void thread::
thread_thunk (void* arg)
{
data* d (static_cast<data*> (arg));
d->ret = d->func (d->arg);
d->mutex.lock ();
unsigned char count = --d->count;
d->mutex.unlock ();
if (count == 0)
delete d;
}
thread::
~thread ()
{
if (handle_ != 0)
{
CloseHandle (handle_);
// Win32 mutex implementation does not throw.
//
data_->mutex.lock ();
unsigned char count = --data_->count;
data_->mutex.unlock ();
if (count == 0)
delete data_;
}
}
thread::
thread (void* (*func) (void*), void* arg)
{
std::auto_ptr<data> d (new data);
d->func = func;
d->arg = arg;
d->count = 2; // One for the thread and one for us.
handle_ = (HANDLE)_beginthreadex (
0, 0, &odb_thread_thunk, d.get (), 0, 0);
if (handle_ == 0)
throw win32_exception ();
data_ = d.release ();
}
void* thread::
join ()
{
void* r;
if (WaitForSingleObject (handle_, INFINITE) != 0)
throw win32_exception ();
r = data_->ret;
CloseHandle (handle_);
delete data_;
handle_ = 0;
data_ = 0;
return r;
}
}
}
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