SVSync Class Reference

The SVSync class provides functionality for Thread & Process Creation. More...

#include <svutil.h>

Static Public Member Functions
static void	StartThread (void *(*func)(void *), void *arg)
	Create new thread. More...
static void	ExitThread ()
	Signals a thread to exit. More...
static void	StartProcess (const char *executable, const char *args)
	Starts a new process. More...

Detailed Description

The SVSync class provides functionality for Thread & Process Creation.

Definition at line 46 of file svutil.h.

Member Function Documentation

ExitThread()

void SVSync::ExitThread ( )

static

Signals a thread to exit.

Definition at line 111 of file svutil.cpp.

                        {
#ifdef _WIN32
  // ExitThread(0);
#else
  pthread_exit(nullptr);
#endif
}

StartProcess()

void SVSync::StartProcess ( const char *  executable, const char *  args  )

static

Starts a new process.

Definition at line 120 of file svutil.cpp.

                                                                  {
  std::string proc;
  proc.append(executable);
  proc.append(" ");
  proc.append(args);
  std::cout << "Starting " << proc << std::endl;
#ifdef _WIN32
  STARTUPINFO start_info;
  PROCESS_INFORMATION proc_info;
  GetStartupInfo(&start_info);
  if (!CreateProcess(nullptr, const_cast<char*>(proc.c_str()), nullptr, nullptr, FALSE,
                CREATE_NO_WINDOW | DETACHED_PROCESS, nullptr, nullptr,
                &start_info, &proc_info))
    return;
#else
  int pid = fork();
  if (pid != 0) {   // The father process returns
  } else {
#ifdef __linux__
    // Make sure the java process terminates on exit, since its
    // broken socket detection seems to be useless.
    prctl(PR_SET_PDEATHSIG, 2, 0, 0, 0);
#endif
    char* mutable_args = strdup(args);
    int argc = 1;
    for (int i = 0; mutable_args[i]; ++i) {
      if (mutable_args[i] == ' ') {
        ++argc;
      }
    }
    std::unique_ptr<char*[]> argv(new char*[argc + 2]);
    argv[0] = strdup(executable);
    argv[1] = mutable_args;
    argc = 2;
    bool inquote = false;
    for (int i = 0; mutable_args[i]; ++i) {
      if (!inquote && mutable_args[i] == ' ') {
        mutable_args[i] = '\0';
        argv[argc++] = mutable_args + i + 1;
      } else if (mutable_args[i] == '"') {
        inquote = !inquote;
        mutable_args[i] = ' ';
      }
    }
    argv[argc] = nullptr;
    execvp(executable, argv.get());
    free(argv[0]);
    free(argv[1]);
  }
#endif
}

StartThread()

void SVSync::StartThread ( void *(*)(void *)  func, void *  arg  )

static

Create new thread.

Definition at line 87 of file svutil.cpp.

                                                        {
#ifdef _WIN32
  LPTHREAD_START_ROUTINE f = (LPTHREAD_START_ROUTINE)func;
  DWORD threadid;
  HANDLE newthread = CreateThread(nullptr,        // default security attributes
                                  0,           // use default stack size
                                  f,           // thread function
                                  arg,         // argument to thread function
                                  0,           // use default creation flags
                                  &threadid);  // returns the thread identifier
#else
  pthread_t helper;
  pthread_attr_t attr;
  pthread_attr_init(&attr);
  pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
  pthread_create(&helper, &attr, func, arg);
#endif
}

---

The documentation for this class was generated from the following files:

• /usr/src/tesseract-ocr.master/src/viewer/svutil.h
• /usr/src/tesseract-ocr.master/src/viewer/svutil.cpp