void RunBackend(oid_t thread_id) {
auto txn_count = state.transaction_count;
auto update_ratio = state.update_ratio;
UniformGenerator generator;
Timer<> timer;
// Start timer
timer.Reset();
timer.Start();
// Run these many transactions
for (oid_t txn_itr = 0; txn_itr < txn_count; txn_itr++) {
auto rng_val = generator.GetSample();
if (rng_val < update_ratio) {
RunUpdate();
}
else {
RunRead();
}
}
// Stop timer
timer.Stop();
// Set duration
durations[thread_id] = timer.GetDuration();
}
void RunBackend(oid_t thread_id) {
auto update_ratio = state.update_ratio;
UniformGenerator generator;
oid_t &execution_count_ref = abort_counts[thread_id];
oid_t &transaction_count_ref = commit_counts[thread_id];
// Run these many transactions
while (true) {
if (is_running == false) {
break;
}
auto rng_val = generator.GetSample();
if (rng_val < update_ratio) {
while (RunUpdate() == false) {
execution_count_ref++;
}
} else {
while (RunRead() == false) {
execution_count_ref++;
}
}
transaction_count_ref++;
}
}
void RunWorkerThread()
{
DWORD dwKey, nBytes;
OVERLAPPED *p_Ovl;
int error;
MPD_Context *pContext;
int ret_val;
while (true)
{
if (GetQueuedCompletionStatus(g_hCommPort, &nBytes, &dwKey, &p_Ovl, INFINITE))
{
//dbg_printf("RunWorkerThread::%d bytes\n", nBytes);
if (dwKey == EXIT_WORKER_KEY)
ExitThread(0);
pContext = (MPD_Context*)dwKey;
if (nBytes)
{
if (nBytes == 1)
{
pContext->bReadPosted = false;
if (!RunRead(pContext, &ret_val))
ErrorExit("RunRead returned FALSE", ret_val);
if (pContext->bDeleteMe)
{
RemoveContext(pContext);
pContext = NULL;
}
else
{
// post the next read
error = PostContextRead(pContext);
if (error)
{
if (error == ERROR_NETNAME_DELETED || error == ERROR_IO_PENDING || error == WSAECONNABORTED)
dbg_printf("RunWorkerThread:Post read for %s(%d) failed, error %d\n", ContextTypeToString(pContext), pContext->sock, error);
else
err_printf("RunWorkerThread:Post read for %s(%d) failed, error %d\n", ContextTypeToString(pContext), pContext->sock, error);
RemoveContext(pContext);
pContext = NULL;
}
}
}
else
{
dbg_printf("RunWorkerThread: nBytes = %d, *** unexpected ***\n", nBytes);
error = PostContextRead(pContext);
if (error)
{
err_printf("RunWorkerThread:Post read for %s(%d) failed, error %d\n", ContextTypeToString(pContext), pContext->sock, error);
RemoveContext(pContext);
pContext = NULL;
}
}
}
else
{
dbg_printf("RunWorkerThread::closing context %s(%d)\n", ContextTypeToString(pContext), pContext->sock);
RemoveContext(pContext);
pContext = NULL;
}
}
else
{
error = GetLastError();
if (error == ERROR_NETNAME_DELETED || error == ERROR_IO_PENDING || error == WSAECONNABORTED)
{
dbg_printf("RunWorkerThread: GetQueuedCompletionStatus failed, error %d\n", error);
}
else
{
err_printf("RunWorkerThread: GetQueuedCompletionStatus failed, error %d\n", error);
}
//return;
}
}
}
