core/kill.c

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#ifdef WIN32
#include "windows.h"
#include "output.h"
#include "signal.h"
#include "process.h"

/* KILLONLY is undefined when building the kill program, 
   and defined when compiling with the main GridLAB-D 
   core modules
 */
#ifndef KILLONLY

#include "gridlabd.h"

static int handler_stop = 0;
void kill_stophandler(void)
{
    handler_stop = 1;
}

void msghandler(void *param)
{
    char name[32];
    HANDLE hEvent;
    unsigned int sig = (unsigned int)(int64)param;
    unsigned int pid = _getpid();
    sprintf(name,"gridlabd.%d.%d",pid,sig);
    hEvent = CreateEventA(NULL,TRUE,FALSE,name);
    output_verbose("creating gridlabd signal handler %d for process %d",sig,pid);
    while (WaitForSingleObject(hEvent,INFINITE)==WAIT_OBJECT_0)
    {
        output_verbose("windows signal handler activated");
        raise(sig);
        ResetEvent(hEvent);
    }
}

void kill_starthandler(void)
{
    if (_beginthread(&msghandler, 0, (void*)SIGINT)==1 || _beginthread(&msghandler, 0, (void*)SIGTERM)==1)
        output_error("kill handler failed to start");
    else
        output_verbose("windows message signal handlers started");
}
#else
#define output_error printf
#define output_verbose
#endif

int kill(unsigned short pid,    
         int sig)               
{
    char name[32];
    HANDLE hEvent;
    sprintf(name,"gridlabd.%d.%d",(int)pid,sig);
    hEvent = OpenEventA(EVENT_MODIFY_STATE,FALSE,name);
    if (hEvent==NULL)
    {
        output_error("unable to signal gridlabd process %d with signal %d (error %d)", pid, sig, GetLastError());
        return 0;
    }
    else
    {
        SetEvent(hEvent);
        output_verbose("signal %d sent to gridlabd process %d", sig, pid);
        return 1;
    }
}
#endif

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GridLAB-D^TM Version 1.0

An open-source project initiated by the US Department of Energy