qse/samples/si/thr03.cpp

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#include <qse/si/Thread.hpp>
#include <qse/si/Condition.hpp>
#include <qse/si/mtx.h>
#include <qse/si/sio.h>
#include <qse/si/os.h>
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#include <qse/cmn/mem.h>
#include <qse/cmn/str.h>
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#include <qse/cmn/HeapMmgr.hpp>
#include <locale.h>
#if defined(_WIN32)
# include <windows.h>
#endif
#include <signal.h>
#include <string.h>
static int g_stopreq = 0;
static qse_ntime_t sleep_interval = { 1, 0 };
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QSE::HeapMmgr g_heap_mmgr (30000, QSE::Mmgr::getDFL());
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struct rq_data_t
{
rq_data_t(): stop(0) {}
int stop;
QSE::Mutex mtx;
QSE::Condition cnd;
};
class Waiter
{
public:
int operator() (QSE::Thread* thr)
{
int i = 0;
rq_data_t* rqdata = (rq_data_t*)thr->getContext();
while (1)
{
#if 0
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rqdata->mtx.lock ();
#else
while (!rqdata->mtx.trylock())
{
qse_printf (QSE_T("[%p] -> retrying to lock\n"), this, i);
}
#endif
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if (rqdata->stop)
{
rqdata->mtx.unlock ();
break;
}
rqdata->cnd.wait(rqdata->mtx);
rqdata->mtx.unlock ();
qse_printf (QSE_T("[%p] -> loop %d\n"), this, i);
i++;
}
qse_printf (QSE_T("[%p] -> exiting\n"), this);
return i;
}
};
static int test1 (void)
{
rq_data_t rqdata;
QSE::ThreadF<Waiter> thr[3];
for (int i = 0; i < 3; i++)
{
thr[i].setStackSize (64000);
thr[i].setContext (&rqdata);
if (thr[i].start(QSE::Thread::SIGNALS_BLOCKED) <= -1)
{
qse_printf (QSE_T("cannot start thread%d\n"), i);
return -1;
}
}
while (1)
{
if (g_stopreq)
{
qse_printf (QSE_T("broadcasting stop ---> 1\n"));
rqdata.mtx.lock ();
rqdata.stop = 1;
rqdata.mtx.unlock ();
rqdata.cnd.broadcast ();
}
int nterm = 0;
for (int i = 0; i < 3; i++)
{
if (thr[i].getState() == QSE::Thread::TERMINATED) nterm++;
}
if (nterm == 3) break;
qse_printf (QSE_T("signalling ....(nterm = %d)\n"), nterm);
rqdata.cnd.signal ();
qse_sleep (&sleep_interval);
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}
for (int i = 0; i < 3; i++)
{
thr[i].join();
}
for (int i = 0; i < 3; i++)
{
qse_printf (QSE_T("thread%d ended with retcode %d\n"), i, thr[i].getReturnCode());
}
return 0;
}
static void handle_sigint (int sig, siginfo_t* siginfo, void* ctx)
{
g_stopreq = 1;
}
static void set_signal (int sig, void(*handler)(int, siginfo_t*, void*))
{
struct sigaction sa;
memset (&sa, 0, sizeof(sa));
/*sa.sa_handler = handler;*/
sa.sa_flags = SA_SIGINFO;
sa.sa_sigaction = handler;
sigemptyset (&sa.sa_mask);
sigaction (sig, &sa, NULL);
}
static void set_signal_to_default (int sig)
{
struct sigaction sa;
memset (&sa, 0, sizeof(sa));
sa.sa_handler = SIG_DFL;
sa.sa_flags = 0;
sigemptyset (&sa.sa_mask);
sigaction (sig, &sa, NULL);
}
int main ()
{
#if defined(_WIN32)
char locale[100];
UINT codepage = GetConsoleOutputCP();
if (codepage == CP_UTF8)
{
/*SetConsoleOutputCP (CP_UTF8);*/
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qse_setdflcmgrbyid (QSE_CMGR_UTF8);
}
else
{
qse_mbsxfmt (locale, QSE_COUNTOF(locale), ".%u", (unsigned int)codepage);
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setlocale (LC_ALL, locale);
/*qse_setdflcmgrbyid (QSE_CMGR_SLMB);*/
}
#else
setlocale (LC_ALL, "");
/*qse_setdflcmgrbyid (QSE_CMGR_SLMB);*/
#endif
set_signal (SIGINT, handle_sigint);
qse_open_stdsios ();
test1();
qse_close_stdsios ();
set_signal_to_default (SIGINT);
return 0;
}