targets/Win32/plc_Win32_main.c
author Edouard Tisserant
Fri, 09 Sep 2022 10:06:02 +0200
changeset 3600 c9ecf7d50888
parent 3296 3bcd5ec67521
child 3731 549763a28934
permissions -rw-r--r--
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/**
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 * Win32 specific code
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 **/
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#include <stdio.h>
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#include <sys/timeb.h>
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#include <time.h>
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#include <windows.h>
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#include <locale.h>
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long AtomicCompareExchange(long* atomicvar, long compared, long exchange)
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{
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    return InterlockedCompareExchange(atomicvar, exchange, compared);
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}
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CRITICAL_SECTION Atomic64CS; 
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long long AtomicCompareExchange64(long long* atomicvar, long long compared, long long exchange)
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{
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    long long res;
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    EnterCriticalSection(&Atomic64CS);
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    res=*atomicvar;
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    if(*atomicvar == compared){
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        *atomicvar = exchange;
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    }
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    LeaveCriticalSection(&Atomic64CS);
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    return res;
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}
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struct timeb timetmp;
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void PLC_GetTime(IEC_TIME *CURRENT_TIME)
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{
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	ftime(&timetmp);
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	(*CURRENT_TIME).tv_sec = timetmp.time;
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	(*CURRENT_TIME).tv_nsec = timetmp.millitm * 1000000;
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}
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void PLC_timer_notify()
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{
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    PLC_GetTime(&__CURRENT_TIME);
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    __run();
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}
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HANDLE PLC_timer = NULL;
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void PLC_SetTimer(unsigned long long next, unsigned long long period)
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{
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	LARGE_INTEGER liDueTime;
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	/* arg 2 of SetWaitableTimer take 100 ns interval*/
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	liDueTime.QuadPart =  next / (-100);
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	if (!SetWaitableTimer(PLC_timer, &liDueTime, period<1000000?1:period/1000000, NULL, NULL, 0))
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    {
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        printf("SetWaitableTimer failed (%d)\n", GetLastError());
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    }
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}
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int PLC_shutdown;
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int ForceSaveRetainReq(void) {
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    return PLC_shutdown;
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}
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/* Variable used to stop plcloop thread */
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void PlcLoop()
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{
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    PLC_shutdown = 0;
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    while(!PLC_shutdown) {
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        if (WaitForSingleObject(PLC_timer, INFINITE) != WAIT_OBJECT_0)
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            PLC_shutdown = 1;
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        PLC_timer_notify();
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    }
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}
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HANDLE PLC_thread;
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HANDLE debug_sem;
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HANDLE debug_wait_sem;
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HANDLE python_sem;
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HANDLE python_wait_sem;
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#define maxval(a,b) ((a>b)?a:b)
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int startPLC(int argc,char **argv)
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{
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	unsigned long thread_id = 0;
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    BOOL tmp;
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    setlocale(LC_NUMERIC, "C");
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    debug_sem = CreateSemaphore(
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                            NULL,           // default security attributes
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                            1,  			// initial count
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                            1,  			// maximum count
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                            NULL);          // unnamed semaphore
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    if (debug_sem == NULL)
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    {
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        printf("startPLC CreateSemaphore debug_sem error: %d\n", GetLastError());
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        return 1;
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    }
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    debug_wait_sem = CreateSemaphore(
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                            NULL,           // default security attributes
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                            0,  			// initial count
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                            1,  			// maximum count
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                            NULL);          // unnamed semaphore
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    if (debug_wait_sem == NULL)
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    {
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        printf("startPLC CreateSemaphore debug_wait_sem error: %d\n", GetLastError());
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        return 1;
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    }
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    python_sem = CreateSemaphore(
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                            NULL,           // default security attributes
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                            1,  			// initial count
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                            1,  			// maximum count
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                            NULL);          // unnamed semaphore
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    if (python_sem == NULL)
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    {
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        printf("startPLC CreateSemaphore python_sem error: %d\n", GetLastError());
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        return 1;
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    }
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    python_wait_sem = CreateSemaphore(
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                            NULL,           // default security attributes
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                            0,  			// initial count
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                            1,  			// maximum count
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                            NULL);          // unnamed semaphore
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    if (python_wait_sem == NULL)
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    {
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        printf("startPLC CreateSemaphore python_wait_sem error: %d\n", GetLastError());
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        return 1;
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    }
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    /* Create a waitable timer */
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    timeBeginPeriod(1);
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    PLC_timer = CreateWaitableTimer(NULL, FALSE, "WaitableTimer");
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    if(NULL == PLC_timer)
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    {
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        printf("CreateWaitableTimer failed (%d)\n", GetLastError());
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        return 1;
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    }
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    if( __init(argc,argv) == 0 )
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    {
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        PLC_SetTimer(common_ticktime__,common_ticktime__);
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        PLC_thread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)PlcLoop, NULL, 0, &thread_id);
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    }
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    else{
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        return 1;
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    }
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    return 0;
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}
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static unsigned long __debug_tick;
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   154
85e92d9e34a8 fixed : bug in debugthreadproc (plugger.py)
greg
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   155
int TryEnterDebugSection(void)
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{
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   157
	//printf("TryEnterDebugSection\n");
469
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   158
    if(WaitForSingleObject(debug_sem, 0) == WAIT_OBJECT_0){
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   159
        /* Only enter if debug active */
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   160
        if(__DEBUG){
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   161
            return 1;
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   162
        }
483
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        ReleaseSemaphore(debug_sem, 1, NULL);
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   164
    }
469
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   165
    return 0;
244
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   166
}
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   167
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   168
void LeaveDebugSection(void)
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   169
{
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   170
	ReleaseSemaphore(debug_sem, 1, NULL);
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   171
    //printf("LeaveDebugSection\n");
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}
229
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int stopPLC()
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{
483
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   176
    CloseHandle(PLC_timer);
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    WaitForSingleObject(PLC_thread, INFINITE);
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    __cleanup();
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    CloseHandle(debug_wait_sem);
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   180
    CloseHandle(debug_sem);
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   181
    CloseHandle(python_wait_sem);
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   182
    CloseHandle(python_sem);
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   183
    CloseHandle(PLC_thread);
229
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}
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/* from plc_debugger.c */
446
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ed
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int WaitDebugData(unsigned long *tick)
229
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   188
{
709
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   189
	DWORD res;
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	res = WaitForSingleObject(debug_wait_sem, INFINITE);
446
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   191
    *tick = __debug_tick;
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   192
    /* Wait signal from PLC thread */
709
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   193
	return res != WAIT_OBJECT_0;
229
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}
329
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280
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/* Called by PLC thread when debug_publish finished
229
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 * This is supposed to unlock debugger thread in WaitDebugData*/
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void InitiateDebugTransfer()
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   199
{
244
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    /* remember tick */
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   201
    __debug_tick = __tick;
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    /* signal debugger thread it can read data */
280
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    ReleaseSemaphore(debug_wait_sem, 1, NULL);
229
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}
244
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   205
614
eed1dcf311a1 added return type to suspendDebug
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int suspendDebug(int disable)
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{
244
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    /* Prevent PLC to enter debug code */
483
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    WaitForSingleObject(debug_sem, INFINITE);
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    __DEBUG = !disable;
484
3d0c06e2648c Fixed freeze on debug suspend.
Lolitech
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   211
    if(disable)
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        ReleaseSemaphore(debug_sem, 1, NULL);
614
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    return 0;
244
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   214
}
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   216
void resumeDebug()
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{
290
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	__DEBUG = 1;
244
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    /* Let PLC enter debug code */
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   220
	ReleaseSemaphore(debug_sem, 1, NULL);
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   221
}
280
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/* from plc_python.c */
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int WaitPythonCommands(void)
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{
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   226
    /* Wait signal from PLC thread */
329
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   227
	return WaitForSingleObject(python_wait_sem, INFINITE);
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   228
}
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   229
280
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   230
/* Called by PLC thread on each new python command*/
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   231
void UnBlockPythonCommands(void)
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   232
{
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   233
    /* signal debugger thread it can read data */
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   234
	ReleaseSemaphore(python_wait_sem, 1, NULL);
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   235
}
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   236
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   237
int TryLockPython(void)
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   238
{
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   239
	return WaitForSingleObject(python_sem, 0) == WAIT_OBJECT_0;
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diff changeset
   240
}
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etisserant
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   241
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   242
void UnLockPython(void)
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   243
{
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   244
	ReleaseSemaphore(python_sem, 1, NULL);
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   245
}
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etisserant
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diff changeset
   246
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   247
void LockPython(void)
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{
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   249
	WaitForSingleObject(python_sem, INFINITE);
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   250
}
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   251
1465
9011e2ceea85 Fixed win32 runtime crashing when attempting to log before errors before PLC start. Added pictures to wxHMI and fixed it so that it loads on windows as well
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   252
static void __attribute__((constructor))
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   253
beremiz_dll_init(void)
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   254
{
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   255
    InitializeCriticalSection(&Atomic64CS);
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Edouard Tisserant
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   256
9011e2ceea85 Fixed win32 runtime crashing when attempting to log before errors before PLC start. Added pictures to wxHMI and fixed it so that it loads on windows as well
Edouard Tisserant
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diff changeset
   257
}
9011e2ceea85 Fixed win32 runtime crashing when attempting to log before errors before PLC start. Added pictures to wxHMI and fixed it so that it loads on windows as well
Edouard Tisserant
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diff changeset
   258
9011e2ceea85 Fixed win32 runtime crashing when attempting to log before errors before PLC start. Added pictures to wxHMI and fixed it so that it loads on windows as well
Edouard Tisserant
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   259
static void __attribute__((destructor))
9011e2ceea85 Fixed win32 runtime crashing when attempting to log before errors before PLC start. Added pictures to wxHMI and fixed it so that it loads on windows as well
Edouard Tisserant
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   260
beremiz_dll_destroy(void)
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   261
{
9011e2ceea85 Fixed win32 runtime crashing when attempting to log before errors before PLC start. Added pictures to wxHMI and fixed it so that it loads on windows as well
Edouard Tisserant
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   262
    DeleteCriticalSection(&Atomic64CS);
9011e2ceea85 Fixed win32 runtime crashing when attempting to log before errors before PLC start. Added pictures to wxHMI and fixed it so that it loads on windows as well
Edouard Tisserant
parents: 1457
diff changeset
   263
}
9011e2ceea85 Fixed win32 runtime crashing when attempting to log before errors before PLC start. Added pictures to wxHMI and fixed it so that it loads on windows as well
Edouard Tisserant
parents: 1457
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   264
3295
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   265
struct RT_to_nRT_signal_s {
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   266
    HANDLE sem;
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   267
};
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   268
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   269
typedef struct RT_to_nRT_signal_s RT_to_nRT_signal_t;
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   271
#define _LogAndReturnNull(text) \
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   272
    {\
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   273
    	char mstr[256] = text " for ";\
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   274
        strncat(mstr, name, 255);\
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   275
        LogMessage(LOG_CRITICAL, mstr, strlen(mstr));\
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   276
        return NULL;\
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   277
    }
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   278
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   279
void *create_RT_to_nRT_signal(char* name){
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   280
    RT_to_nRT_signal_t *sig = (RT_to_nRT_signal_t*)malloc(sizeof(RT_to_nRT_signal_t));
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   281
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   282
    if(!sig) 
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   283
    	_LogAndReturnNull("Failed allocating memory for RT_to_nRT signal");
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   285
    sig->sem = CreateSemaphore(
0375d801fff7 Runtime+SVGHMI: Add generic wakeup of threads from PLC thread to windows implementation of plc_main.c. Also added nRT_reschedule to abstract sched_yield.
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   286
                            NULL,           // default security attributes
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                            1,  			// initial count
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                            1,  			// maximum count
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                            NULL);          // unnamed semaphore
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    if(sig->sem == NULL)
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    {
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    	char mstr[256];
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        snprintf(mstr, 255, "startPLC CreateSemaphore %s error: %d\n", name, GetLastError());
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        LogMessage(LOG_CRITICAL, mstr, strlen(mstr));
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        return NULL;
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    }
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    return (void*)sig;
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}
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void delete_RT_to_nRT_signal(void* handle){
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    RT_to_nRT_signal_t *sig = (RT_to_nRT_signal_t*)handle;
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    CloseHandle(python_sem);
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    free(sig);
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}
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int wait_RT_to_nRT_signal(void* handle){
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    int ret;
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    RT_to_nRT_signal_t *sig = (RT_to_nRT_signal_t*)handle;
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	return WaitForSingleObject(sig->sem, INFINITE);
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}
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int unblock_RT_to_nRT_signal(void* handle){
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    RT_to_nRT_signal_t *sig = (RT_to_nRT_signal_t*)handle;
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	return ReleaseSemaphore(sig->sem, 1, NULL);
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}
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void nRT_reschedule(void){
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    SwitchToThread();
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}
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