tesseract::SVSync Class Reference

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

#include <svutil.h>

Static Public Member Functions
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 38 of file svutil.h.

Member Function Documentation

StartProcess()

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

static

Starts a new process.

Definition at line 67 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
    std::string mutable_args(args);
    int argc = 1;
    for (auto ch : mutable_args) {
      if (ch == ' ') {
        ++argc;
      }
    }
    std::unique_ptr<char *[]> argv(new char *[argc + 2]);
    std::string argv0(executable);
    argv[0] = &argv0[0];
    argv[1] = &mutable_args[0];
    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());
  }
#  endif
}

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

• /media/home/debian/src/github/tesseract-ocr/tesseract/src/viewer/svutil.h
• /media/home/debian/src/github/tesseract-ocr/tesseract/src/viewer/svutil.cpp