diff options
Diffstat (limited to 'doc/assuan.texi')
| -rw-r--r-- | doc/assuan.texi | 39 |
1 files changed, 13 insertions, 26 deletions
diff --git a/doc/assuan.texi b/doc/assuan.texi index adfc86d..5641aa0 100644 --- a/doc/assuan.texi +++ b/doc/assuan.texi @@ -465,10 +465,6 @@ specifying both options to @command{libassuan-config}: gcc -o foo foo.c $(libassuan-config --cflags --libs) @end example -If your application uses Pth or pthread, you need to pass the option -@option{--thread=pth} respective @option{--thread=pthread} to the -invocation of @command{libassuan-config}. - @node Automake @section Building sources using Automake @@ -498,36 +494,27 @@ AM_CPPFLAGS = $(LIBASSUAN_CFLAGS) LDADD = $(LIBASSUAN_LIBS) @end example -@defmac AM_PATH_LIBASSUAN_PTH (@ovar{minimum-version}, @ovar{action-if-found}, @ovar{action-if-not-found}) -Same as @code{AM_PATH_LIBASSUAN} but checks for the GNU Pth enabled -version of the library and defines @code{LIBASSUAN_PTH_CFLAGS} -@code{LIBASSUAN_PTH_LIBS} instead. Use this is you are using GNU Pth. -Note that you also need to pass the appropriate options for Pth to the -compiler and linker. -@end defmac - -@defmac AM_PATH_LIBASSUAN_PTHREAD (@ovar{minimum-version}, @ovar{action-if-found}, @ovar{action-if-not-found}) -Same as @code{AM_PATH_LIBASSUAN} but checks for the pthreads enabled -version of the library and defines @code{LIBASSUAN_PTHREAD_CFLAGS} -@code{LIBASSUAN_PTHREAD_LIBS} instead. Use this is you are using GNU Pth. -Note that you also need to pass the appropriate options for Pth to the -compiler and linker. -@end defmac - - @node Multi Threading @section Multi Threading -The @code{libassuan} library is thread-safe if you adhere to the following -requirements: +The @code{libassuan} library is designed so that it can be used in a +threaded application, if some rules are followed. @itemize @bullet @item Run the initialization functions before you actually start -to use threads. +to use threads. Specifically, the functions +@code{assuan_set_gpg_err_source}, @code{assuan_set_malloc_hooks} and +@code{assuan_set_log_cb} should not be called concurrently with +@code{assuan_new}. Use @code{assuan_new_ext} instead or ensure proper +serialization. @item Only one thread at a time may access an @code{libassuan} context. @item If you use the default log handler, use @code{assuan_set_assuan_log_stream} to setup a default log stream. +@item If you have callback functions shared by multiple functions, +the callback function must be reentrant for that purpose. +@code{libassuan} does not serialize invocation of callback functions +across contexts. @end itemize @@ -950,12 +937,12 @@ If the peer is not a simple pipe server but one using full-duplex sockets, the full-fledged variant of the above function should be used: -@deftypefun gpg_error_t assuan_pipe_connect_ext (@w{assuan_context_t *@var{ctx}},@w{const char *@var{name}}, @w{const char *@var{argv}[]}, @w{int *@var{fd_child_list}}, @w{void (*@var{atfork}) (void *, int)}, @w{void *@var{atforkvalue}}, @w{unsigned int @var{flags}}) +@deftypefun gpg_error_t assuan_pipe_connect_ext (@w{assuan_context_t *@var{ctx}},@w{const char *@var{name}}, @w{const char *@var{argv}[]}, @w{assuan_fd_t *@var{fd_child_list}}, @w{void (*@var{atfork}) (void *, int)}, @w{void *@var{atforkvalue}}, @w{unsigned int @var{flags}}) A call to this functions forks the current process and executes the program @var{name}, passing the arguments given in the NULL-terminated list @var{argv}. A list of file descriptors not to be closed may be -given using the @code{-1} terminated array @var{fd_child_list}. +given using the @code{ASSUAN_INVLID_FD} terminated array @var{fd_child_list}. If @var{name} is a null pointer, only a fork but no exec is done. Thus the child continues to run. However all file descriptors are |