int LLProcessLauncher::launch(void)
{
// If there was already a process associated with this object, kill it.
kill();
orphan();
int result = 0;
PROCESS_INFORMATION pinfo;
STARTUPINFOA sinfo;
memset(&sinfo, 0, sizeof(sinfo));
std::string args = mExecutable;
for(int i = 0; i < (int)mLaunchArguments.size(); i++)
{
args += " ";
args += mLaunchArguments[i];
}
// So retarded. Windows requires that the second parameter to CreateProcessA be a writable (non-const) string...
char *args2 = new char[args.size() + 1];
strcpy(args2, args.c_str());
if( ! CreateProcessA( NULL, args2, NULL, NULL, FALSE, 0, NULL, NULL, &sinfo, &pinfo ) )
{
// TODO: do better than returning the OS-specific error code on failure...
result = GetLastError();
if(result == 0)
{
// Make absolutely certain we return a non-zero value on failure.
result = -1;
}
}
else
{
// foo = pinfo.dwProcessId; // get your pid here if you want to use it later on
// CloseHandle(pinfo.hProcess); // stops leaks - nothing else
mProcessHandle = pinfo.hProcess;
CloseHandle(pinfo.hThread); // stops leaks - nothing else
}
delete[] args2;
return result;
}
int LLProcessLauncher::launch(void)
{
// If there was already a process associated with this object, kill it.
kill();
orphan();
int result = 0;
int current_wd = -1;
// create an argv vector for the child process
const char ** fake_argv = new const char *[mLaunchArguments.size() + 2]; // 1 for the executable path, 1 for the NULL terminator
int i = 0;
// add the executable path
fake_argv[i++] = mExecutable.c_str();
// and any arguments
for(int j=0; j < mLaunchArguments.size(); j++)
fake_argv[i++] = mLaunchArguments[j].c_str();
// terminate with a null pointer
fake_argv[i] = NULL;
if(!mWorkingDir.empty())
{
// save the current working directory
current_wd = ::open(".", O_RDONLY);
// and change to the one the child will be executed in
if (::chdir(mWorkingDir.c_str()))
{
// chdir failed
}
}
// flush all buffers before the child inherits them
::fflush(NULL);
pid_t id = vfork();
if(id == 0)
{
// child process
::execv(mExecutable.c_str(), (char * const *)fake_argv);
// If we reach this point, the exec failed.
// Use _exit() instead of exit() per the vfork man page.
_exit(0);
}
// parent process
if(current_wd >= 0)
{
// restore the previous working directory
if (::fchdir(current_wd))
{
// chdir failed
}
::close(current_wd);
}
delete[] fake_argv;
mProcessID = id;
// At this point, the child process will have been created (since that's how vfork works -- the child borrowed our execution context until it forked)
// If the process doesn't exist at this point, the exec failed.
if(!isRunning())
{
result = -1;
}
return result;
}
int LLProcessLauncher::launch(void)
{
// If there was already a process associated with this object, kill it.
kill();
orphan();
int result = 0;
PROCESS_INFORMATION pinfo;
STARTUPINFOA sinfo;
memset(&sinfo, 0, sizeof(sinfo));
std::string args = mExecutable;
for(int i = 0; i < (int)mLaunchArguments.size(); i++)
{
args += " ";
args += mLaunchArguments[i];
}
// So retarded. Windows requires that the second parameter to CreateProcessA be a writable (non-const) string...
char *args2 = new char[args.size() + 1];
strcpy(args2, args.c_str());
const char * working_directory = 0;
if(!mWorkingDir.empty()) working_directory = mWorkingDir.c_str();
if( ! CreateProcessA( NULL, args2, NULL, NULL, FALSE, 0, NULL, working_directory, &sinfo, &pinfo ) )
{
result = GetLastError();
LPTSTR error_str = 0;
if(
FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL,
result,
0,
(LPTSTR)&error_str,
0,
NULL)
!= 0)
{
char message[256];
wcstombs(message, error_str, 256);
message[255] = 0;
LL_WARNS() << "CreateProcessA failed: " << message << LL_ENDL;
LocalFree(error_str);
}
if(result == 0)
{
// Make absolutely certain we return a non-zero value on failure.
result = -1;
}
}
else
{
// foo = pinfo.dwProcessId; // get your pid here if you want to use it later on
// CloseHandle(pinfo.hProcess); // stops leaks - nothing else
mProcessHandle = pinfo.hProcess;
CloseHandle(pinfo.hThread); // stops leaks - nothing else
}
delete[] args2;
return result;
}
void pTextEdit::setWordWrap(bool wordWrap) {
//ES_AUTOHSCROLL cannot be changed after widget creation.
//As a result, we must destroy and re-create widget to change this setting.
orphan();
}
int LLProcessLauncher::launch(void)
{
// If there was already a process associated with this object, kill it.
kill();
orphan();
int result = 0;
int current_wd = -1;
// create an argv vector for the child process
const char ** fake_argv = new const char *[mLaunchArguments.size() + 2]; // 1 for the executable path, 1 for the NULL terminator
int i = 0;
// add the executable path
fake_argv[i++] = mExecutable.c_str();
// and any arguments
for(int j=0; j < mLaunchArguments.size(); j++)
fake_argv[i++] = mLaunchArguments[j].c_str();
// terminate with a null pointer
fake_argv[i] = NULL;
if(!mWorkingDir.empty())
{
// save the current working directory
current_wd = ::open(".", O_RDONLY);
// and change to the one the child will be executed in
if (::chdir(mWorkingDir.c_str()))
{
// chdir failed
}
}
pid_t id;
{
#ifdef DEBUG_PIPE_CHILD_ERROR_REPORTING
// Set up a pipe to the child process for error reporting.
apr_file_t* in;
apr_file_t* out;
LLAPRPool pool;
pool.create();
#if(APR_VERSION_MAJOR==1 && APR_VERSION_MINOR>=3 || APR_VERSION_MAJOR>1)
apr_status_t status = apr_file_pipe_create_ex(&in, &out, APR_FULL_BLOCK, pool());
#else
apr_status_t status = apr_file_pipe_create(&in, &out, pool());
#endif
assert(status == APR_SUCCESS);
bool success = (status == APR_SUCCESS);
if (success)
{
apr_interval_time_t const timeout = 10000000; // 10 seconds.
status = apr_file_pipe_timeout_set(in, timeout);
assert(status == APR_SUCCESS);
success = (status == APR_SUCCESS);
}
#endif // DEBUG_PIPE_CHILD_ERROR_REPORTING
// flush all buffers before the child inherits them
::fflush(NULL);
id = vfork();
if (id == 0)
{
// child process
#ifdef DEBUG_PIPE_CHILD_ERROR_REPORTING
// Tell parent process we're about to call execv.
write_pipe(out, "CALLING EXECV");
#ifdef _DEBUG
char const* display = getenv("DISPLAY");
std::cerr << "Calling ::execv(\"" << mExecutable << '"';
for(int j = 0; j < i; ++j)
std::cerr << ", \"" << fake_argv[j] << '"';
std::cerr << ") with DISPLAY=\"" << (display ? display : "NULL") << '"' << std::endl;
#endif
#endif // DEBUG_PIPE_CHILD_ERROR_REPORTING
::execv(mExecutable.c_str(), (char * const *)fake_argv);
#ifdef DEBUG_PIPE_CHILD_ERROR_REPORTING
status = APR_FROM_OS_ERROR(apr_get_os_error());
char message[256];
char errbuf[128];
apr_strerror(status, errbuf, sizeof(errbuf));
snprintf(message, sizeof(message), "Child process: execv: %s: %s", mExecutable.c_str(), errbuf);
write_pipe(out, message);
#ifdef _DEBUG
std::cerr << "::execv() failed." << std::endl;
#endif
#endif // DEBUG_PIPE_CHILD_ERROR_REPORTING
// If we reach this point, the exec failed.
// Use _exit() instead of exit() per the vfork man page.
_exit(0);
}
// parent process
#ifdef DEBUG_PIPE_CHILD_ERROR_REPORTING
// Close unused pipe end.
apr_file_close(out);
if (success)
{
// Attempt to do error reporting.
std::string message = read_pipe(in);
success = (message == "CALLING EXECV");
assert(success);
if (success)
{
status = apr_file_pipe_timeout_set(in, 2000000); // Only wait 2 seconds.
message = read_pipe(in, true);
if (message != "TIMEOUT" && message != "END OF FILE")
{
// Most likely execv failed.
llwarns << message << llendl;
assert(false); // Fail in debug mode.
}
}
}
// Clean up.
apr_file_close(in);
#endif // DEBUG_PIPE_CHILD_ERROR_REPORTING
}
if(current_wd >= 0)
{
// restore the previous working directory
if (::fchdir(current_wd))
{
// chdir failed
}
::close(current_wd);
}
delete[] fake_argv;
mProcessID = id;
// At this point, the child process will have been created (since that's how vfork works -- the child borrowed our execution context until it forked)
// If the process doesn't exist at this point, the exec failed.
if(!isRunning())
{
result = -1;
}
return result;
}
