beremiz

make clipboard open minimal time as wxPython documentation recommends

2018-05-25, Andrey Skvortsov
5ce6d08ff2c7
make clipboard open minimal time as wxPython documentation recommends

https://wxpython.org/Phoenix/docs/html/wx.Clipboard.html#wx.Clipboard.GetData

"Call wx.Clipboard.Open to get ownership of the clipboard. If this
operation returns True, you now own the clipboard. Call
wx.Clipboard.SetData to put data on the clipboard, or
wx.Clipboard.GetData to retrieve data from the clipboard. Call
wx.Clipboard.Close to close the clipboard and relinquish ownership.
You should keep the clipboard open only momentarily."

Maybe it makes situation with pretty annoying error 'clipboard already
open' a little bit better.

traceback:
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/BeremizIDE.py", line 955, in OnSaveProjectMenu
self.RefreshAfterSave()
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/BeremizIDE.py", line 946, in RefreshAfterSave
self._Refresh(TITLE, FILEMENU, EDITMENU, PAGETITLES)
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/IDEFrame.py", line 926, in _Refresh
self.RefreshFunctions[element]()
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/BeremizIDE.py", line 766, in RefreshEditMenu
IDEFrame.RefreshEditMenu(self)
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/IDEFrame.py", line 1185, in RefreshEditMenu
if self.GetCopyBuffer() is not None:
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/IDEFrame.py", line 956, in GetCopyBuffer
if wx.TheClipboard.Open():
File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk3/wx/_misc.py", line 5793, in Open
return _misc_.Clipboard_Open(*args, **kwargs)
: C++ assertion "!m_open" failed at ../src/gtk/clipbrd.cpp(598) in Open(): clipboard already open
/**
* Linux specific code
**/
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <signal.h>
#include <stdlib.h>
#include <pthread.h>
#include <locale.h>
#include <semaphore.h>
static sem_t Run_PLC;
long AtomicCompareExchange(long* atomicvar,long compared, long exchange)
{
return __sync_val_compare_and_swap(atomicvar, compared, exchange);
}
long long AtomicCompareExchange64(long long* atomicvar, long long compared, long long exchange)
{
return __sync_val_compare_and_swap(atomicvar, compared, exchange);
}
void PLC_GetTime(IEC_TIME *CURRENT_TIME)
{
struct timespec tmp;
clock_gettime(CLOCK_REALTIME, &tmp);
CURRENT_TIME->tv_sec = tmp.tv_sec;
CURRENT_TIME->tv_nsec = tmp.tv_nsec;
}
void PLC_timer_notify(sigval_t val)
{
PLC_GetTime(&__CURRENT_TIME);
sem_post(&Run_PLC);
}
timer_t PLC_timer;
void PLC_SetTimer(unsigned long long next, unsigned long long period)
{
struct itimerspec timerValues;
/*
printf("SetTimer(%lld,%lld)\n",next, period);
*/
memset (&timerValues, 0, sizeof (struct itimerspec));
{
#ifdef __lldiv_t_defined
lldiv_t nxt_div = lldiv(next, 1000000000);
lldiv_t period_div = lldiv(period, 1000000000);
timerValues.it_value.tv_sec = nxt_div.quot;
timerValues.it_value.tv_nsec = nxt_div.rem;
timerValues.it_interval.tv_sec = period_div.quot;
timerValues.it_interval.tv_nsec = period_div.rem;
#else
timerValues.it_value.tv_sec = next / 1000000000;
timerValues.it_value.tv_nsec = next % 1000000000;
timerValues.it_interval.tv_sec = period / 1000000000;
timerValues.it_interval.tv_nsec = period % 1000000000;
#endif
}
timer_settime (PLC_timer, 0, &timerValues, NULL);
}
//
void catch_signal(int sig)
{
// signal(SIGTERM, catch_signal);
signal(SIGINT, catch_signal);
printf("Got Signal %d\n",sig);
exit(0);
}
static unsigned long __debug_tick;
pthread_t PLC_thread;
static pthread_mutex_t python_wait_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t python_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t debug_wait_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t debug_mutex = PTHREAD_MUTEX_INITIALIZER;
int PLC_shutdown = 0;
void PLC_thread_proc(void *arg)
{
while (!PLC_shutdown) {
sem_wait(&Run_PLC);
__run();
}
pthread_exit(0);
}
#define maxval(a,b) ((a>b)?a:b)
int startPLC(int argc,char **argv)
{
struct sigevent sigev;
setlocale(LC_NUMERIC, "C");
PLC_shutdown = 0;
sem_init(&Run_PLC, 0, 0);
pthread_create(&PLC_thread, NULL, (void*) &PLC_thread_proc, NULL);
memset (&sigev, 0, sizeof (struct sigevent));
sigev.sigev_value.sival_int = 0;
sigev.sigev_notify = SIGEV_THREAD;
sigev.sigev_notify_attributes = NULL;
sigev.sigev_notify_function = PLC_timer_notify;
pthread_mutex_init(&debug_wait_mutex, NULL);
pthread_mutex_init(&debug_mutex, NULL);
pthread_mutex_init(&python_wait_mutex, NULL);
pthread_mutex_init(&python_mutex, NULL);
pthread_mutex_lock(&debug_wait_mutex);
pthread_mutex_lock(&python_wait_mutex);
timer_create (CLOCK_REALTIME, &sigev, &PLC_timer);
if( __init(argc,argv) == 0 ){
PLC_SetTimer(common_ticktime__,common_ticktime__);
/* install signal handler for manual break */
signal(SIGINT, catch_signal);
}else{
return 1;
}
return 0;
}
int TryEnterDebugSection(void)
{
if (pthread_mutex_trylock(&debug_mutex) == 0){
/* Only enter if debug active */
if(__DEBUG){
return 1;
}
pthread_mutex_unlock(&debug_mutex);
}
return 0;
}
void LeaveDebugSection(void)
{
pthread_mutex_unlock(&debug_mutex);
}
int stopPLC()
{
/* Stop the PLC */
PLC_shutdown = 1;
sem_post(&Run_PLC);
PLC_SetTimer(0,0);
pthread_join(PLC_thread, NULL);
sem_destroy(&Run_PLC);
timer_delete (PLC_timer);
__cleanup();
pthread_mutex_destroy(&debug_wait_mutex);
pthread_mutex_destroy(&debug_mutex);
pthread_mutex_destroy(&python_wait_mutex);
pthread_mutex_destroy(&python_mutex);
return 0;
}
extern unsigned long __tick;
int WaitDebugData(unsigned long *tick)
{
int res;
if (PLC_shutdown) return 1;
/* Wait signal from PLC thread */
res = pthread_mutex_lock(&debug_wait_mutex);
*tick = __debug_tick;
return res;
}
/* Called by PLC thread when debug_publish finished
* This is supposed to unlock debugger thread in WaitDebugData*/
void InitiateDebugTransfer()
{
/* remember tick */
__debug_tick = __tick;
/* signal debugger thread it can read data */
pthread_mutex_unlock(&debug_wait_mutex);
}
int suspendDebug(int disable)
{
/* Prevent PLC to enter debug code */
pthread_mutex_lock(&debug_mutex);
/*__DEBUG is protected by this mutex */
__DEBUG = !disable;
if (disable)
pthread_mutex_unlock(&debug_mutex);
return 0;
}
void resumeDebug(void)
{
__DEBUG = 1;
/* Let PLC enter debug code */
pthread_mutex_unlock(&debug_mutex);
}
/* from plc_python.c */
int WaitPythonCommands(void)
{
/* Wait signal from PLC thread */
return pthread_mutex_lock(&python_wait_mutex);
}
/* Called by PLC thread on each new python command*/
void UnBlockPythonCommands(void)
{
/* signal debugger thread it can read data */
pthread_mutex_unlock(&python_wait_mutex);
}
int TryLockPython(void)
{
return pthread_mutex_trylock(&python_mutex) == 0;
}
void UnLockPython(void)
{
pthread_mutex_unlock(&python_mutex);
}
void LockPython(void)
{
pthread_mutex_lock(&python_mutex);
}
#ifndef HAVE_RETAIN
void InitRetain(void)
{
}
void CleanupRetain(void)
{
}
int CheckRetainBuffer(void)
{
return 1;
}
void ValidateRetainBuffer(void)
{
}
void InValidateRetainBuffer(void)
{
}
void Retain(unsigned int offset, unsigned int count, void *p)
{
}
void Remind(unsigned int offset, unsigned int count, void *p)
{
}
#endif // !HAVE_RETAIN