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#include "proc_alive.h"
#include <util/system/platform.h>
#include <util/system/compat.h>
#include <util/system/error.h>
#include <util/system/winint.h>
#include <errno.h>
namespace NYql {
bool IsProcessAlive(TProcessId pid) {
#ifdef _unix_
// If sending a null signal fails with the error ESRCH, then we know
// the process doesn’t exist. If the call fails with the error
// EPERM - the process exists, but we don’t have permission to send
// a signal to it.
kill(pid, 0);
return errno != ESRCH;
#elif defined(_win_)
HANDLE process = OpenProcess(SYNCHRONIZE, FALSE, pid);
if (process == NULL) {
return false;
}
DWORD ret = WaitForSingleObject(process, 0);
CloseHandle(process);
return ret == WAIT_TIMEOUT;
#else
Y_UNUSED(pid);
return false;
#endif
}
} // NYql
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