From db5918bf8e6707b66c175e73635937e65d91357e Mon Sep 17 00:00:00 2001 From: Tim Janik Date: Sun, 9 Aug 1998 08:32:18 +0000 Subject: [PATCH] initial import of gmodule. --- Makefile.am | 4 + configure.in | 85 ++++++- glib-config.in | 64 +++++- glib/Makefile.am | 4 + gmodule/AUTHORS | 1 + gmodule/COPYING | 482 +++++++++++++++++++++++++++++++++++++++ gmodule/ChangeLog | 3 + gmodule/Makefile.am | 50 ++++ gmodule/gmodule-dl.c | 108 +++++++++ gmodule/gmodule-dld.c | 82 +++++++ gmodule/gmodule.c | 270 ++++++++++++++++++++++ gmodule/gmoduleconf.h.in | 48 ++++ gmodule/libgplugin_a.c | 63 +++++ gmodule/libgplugin_b.c | 43 ++++ gmodule/testgmodule.c | 170 ++++++++++++++ 15 files changed, 1464 insertions(+), 13 deletions(-) create mode 100644 gmodule/AUTHORS create mode 100644 gmodule/COPYING create mode 100644 gmodule/ChangeLog create mode 100644 gmodule/Makefile.am create mode 100644 gmodule/gmodule-dl.c create mode 100644 gmodule/gmodule-dld.c create mode 100644 gmodule/gmodule.c create mode 100644 gmodule/gmoduleconf.h.in create mode 100644 gmodule/libgplugin_a.c create mode 100644 gmodule/libgplugin_b.c create mode 100644 gmodule/testgmodule.c diff --git a/Makefile.am b/Makefile.am index 50faf48e..5316cae0 100644 --- a/Makefile.am +++ b/Makefile.am @@ -1,8 +1,12 @@ ## Process this file with automake to produce Makefile.in +SUBDIRS = gmodule + configincludedir = $(pkglibdir)/include bin_SCRIPTS=glib-config +BUILT_SOURCES=glib-config +glib-config: glib-config.in EXTRA_DIST = \ glib.m4 \ diff --git a/configure.in b/configure.in index 76ad642a..b9a4a205 100644 --- a/configure.in +++ b/configure.in @@ -222,4 +222,87 @@ if test $gtk_ok = no; then fi AC_MSG_RESULT($gtk_ok) -AC_OUTPUT([Makefile glib-config],[chmod +x glib-config]) +dnl *********************** +dnl *** g_module checks *** +dnl *********************** +G_MODULE_LIBS= +G_MODULE_LDFLAGS= +G_MODULE_IMPL= +G_MODULE_NEED_USCORE=0 +G_MODULE_HAVE_DLERROR=0 +dnl *** dlopen() in system libraries +if test -z "$G_MODULE_IMPL"; then + AC_CHECK_FUNC(dlopen, + G_MODULE_IMPL=G_MODULE_IMPL_DL + ,) +fi +dnl *** dlopen() in libdl +if test -z "$G_MODULE_IMPL"; then + AC_CHECK_LIB(dl, dlopen, + G_MODULE_LIBS=-ldl + G_MODULE_IMPL=G_MODULE_IMPL_DL + ,) +fi +dnl *** shl_load() in libdld (HP-UX) +if test -z "$G_MODULE_IMPL"; then + G_MODULE_LDFLAGS='-Wl,-E' + AC_CHECK_LIB(dld, shl_load, + G_MODULE_LIBS=-ldld + G_MODULE_IMPL=G_MODULE_IMPL_DLD + ,) +fi +dnl *** additional checks for G_MODULE_IMPL_DL +if test "$G_MODULE_IMPL" = "G_MODULE_IMPL_DL"; then + if test -d /usr/include/linux; then + G_MODULE_LDFLAGS='-rdynamic' + fi + LIBS_orig="$LIBS" + LDFLAGS_orig="$LDFLAGS" + LIBS="$LIBS $G_MODULE_LIBS" + LDFLAGS="$LDFLAGS $G_MODULE_LDFLAGS" +dnl *** check whether we need preceeding underscores + AC_MSG_CHECKING(for preceeding underscore in symbols) + AC_CACHE_VAL(glib_cv_uscore,[ + AC_TRY_RUN([ + #include + int glib_underscore_test (void) { return 42; } + int main() { + void *f1 = (void*)0, *f2 = (void*)0, *handle; + handle = dlopen ((void*)0, 0); + if (handle) { + f1 = dlsym (handle, "glib_underscore_test"); + f2 = dlsym (handle, "_glib_underscore_test"); + } return !(f2 && !f1); + }], + glib_cv_uscore=yes + G_MODULE_NEED_USCORE=1 + , + glib_cv_uscore=no + G_MODULE_NEED_USCORE=0 + ,) + ]) + AC_MSG_RESULT($glib_cv_uscore) + LDFLAGS="$LDFLAGS_orig" +dnl *** check for having dlerror() + AC_CHECK_FUNC(dlerror, + G_MODULE_HAVE_DLERROR=1, + G_MODULE_HAVE_DLERROR=0) + LIBS="$LIBS_orig" +fi +dnl *** done, have e got an implementation? +if test -z "$G_MODULE_IMPL"; then + G_MODULE_IMPL=0 +fi +AC_SUBST(G_MODULE_IMPL) +AC_SUBST(G_MODULE_LIBS) +AC_SUBST(G_MODULE_LDFLAGS) +AC_SUBST(G_MODULE_HAVE_DLERROR) +AC_SUBST(G_MODULE_NEED_USCORE) + + +AC_OUTPUT([ +Makefile +glib-config +gmodule/gmoduleconf.h +gmodule/Makefile +],[chmod +x glib-config]) diff --git a/glib-config.in b/glib-config.in index ad92c6f1..7e4fed65 100644 --- a/glib-config.in +++ b/glib-config.in @@ -4,14 +4,29 @@ prefix=@prefix@ exec_prefix=@exec_prefix@ exec_prefix_set=no -usage="\ -Usage: glib-config [--prefix[=DIR]] [--exec-prefix[=DIR]] [--version] [--libs] [--cflags]" +usage() +{ + cat <&2 - exit 1 + usage 1 1>&2 fi +lib_glib=yes + while test $# -gt 0; do case "$1" in -*=*) optarg=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'` ;; @@ -26,32 +41,57 @@ while test $# -gt 0; do fi ;; --prefix) - echo $prefix + echo_prefix=yes ;; --exec-prefix=*) exec_prefix=$optarg exec_prefix_set=yes ;; --exec-prefix) - echo $exec_prefix + echo_exec_prefix=yes ;; --version) echo @GLIB_VERSION@ + exit 0 ;; --cflags) - if test @includedir@ != /usr/include ; then - includes=-I@includedir@ + if test "@includedir@" != /usr/include ; then + includes="-I@includedir@" fi - echo -I@libdir@/glib/include $includes + echo_cflags=yes ;; --libs) - echo -L@libdir@ -lglib-@LT_RELEASE@ + echo_libs=yes + ;; + glib) + lib_glib=yes + ;; + gmodule) + lib_gmodule=yes ;; *) - echo "${usage}" 1>&2 - exit 1 + usage 1 1>&2 ;; esac shift done +if test "$echo_prefix" = "yes"; then + echo $prefix +fi +if test "$echo_exec_prefix" = "yes"; then + echo $exec_prefix +fi +if test "$echo_cflags" = "yes"; then + echo -I@libdir@/glib/include $includes +fi +if test "$echo_libs" = "yes"; then + libs="" + if test "$lib_glib" = "yes"; then + libs="$libs -lglib-@LT_RELEASE@" + fi + if test "$lib_gmodule" = "yes"; then + libs="@G_MODULE_LDFLAGS@ -lgmodule-@LT_RELEASE@ $libs @G_MODULE_LIBS@" + fi + echo "-L@libdir@ $libs" +fi diff --git a/glib/Makefile.am b/glib/Makefile.am index 50faf48e..5316cae0 100644 --- a/glib/Makefile.am +++ b/glib/Makefile.am @@ -1,8 +1,12 @@ ## Process this file with automake to produce Makefile.in +SUBDIRS = gmodule + configincludedir = $(pkglibdir)/include bin_SCRIPTS=glib-config +BUILT_SOURCES=glib-config +glib-config: glib-config.in EXTRA_DIST = \ glib.m4 \ diff --git a/gmodule/AUTHORS b/gmodule/AUTHORS new file mode 100644 index 00000000..32826958 --- /dev/null +++ b/gmodule/AUTHORS @@ -0,0 +1 @@ +Tim Janik diff --git a/gmodule/COPYING b/gmodule/COPYING new file mode 100644 index 00000000..bf50f20d --- /dev/null +++ b/gmodule/COPYING @@ -0,0 +1,482 @@ + GNU LIBRARY GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1991 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the library GPL. 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You can do so by permitting +redistribution under these terms (or, alternatively, under the terms of the +ordinary General Public License). + + To apply these terms, attach the following notices to the library. It is +safest to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least the +"copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the + Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307 USA. + +Also add information on how to contact you by electronic and paper mail. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the library, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random Hacker. + + , 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! diff --git a/gmodule/ChangeLog b/gmodule/ChangeLog new file mode 100644 index 00000000..b568d2fd --- /dev/null +++ b/gmodule/ChangeLog @@ -0,0 +1,3 @@ +Sun Aug 9 10:31:05 1998 Tim Janik + + * ChangeLog start for gmodule. diff --git a/gmodule/Makefile.am b/gmodule/Makefile.am new file mode 100644 index 00000000..5b6806f9 --- /dev/null +++ b/gmodule/Makefile.am @@ -0,0 +1,50 @@ +## Process this file with automake to produce Makefile.in + +INCLUDES = -I$(top_srcdir) -I$(top_srcdir)/gmodule + +EXTRA_DIST = \ + gmoduleconf.h.in + +BUILT_SOURCES = gmoduleconf.h +gmoduleconf.h: gmoduleconf.h.in + +include_HEADERS = \ + gmodule.h + +lib_LTLIBRARIES = libgmodule-1.1.la libgplugin_a.la libgplugin_b.la + +libgmodule_1_1_la_SOURCES = gmodule.c +libgmodule_1_1_la_LDFLAGS = @G_MODULE_LDFLAGS@ -version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE) +libgmodule_1_1_la_LIBADD = @G_MODULE_LIBS@ -lglib-@LT_RELEASE@ + +libgplugin_a_la_SOURCES = libgplugin_a.c +libgplugin_a_la_LDFLAGS = @G_MODULE_LDFLAGS@ +libgplugin_a_la_LIBADD = @G_MODULE_LIBS@ -lglib-@LT_RELEASE@ + +libgplugin_b_la_SOURCES = libgplugin_b.c +libgplugin_b_la_LDFLAGS = @G_MODULE_LDFLAGS@ +libgplugin_b_la_LIBADD = @G_MODULE_LIBS@ -lglib-@LT_RELEASE@ + +noinst_PROGRAMS = testgmodule +testgmodule_LDFLAGS += @G_MODULE_LDFLAGS@ +testgmodule_LDADD = libgmodule-@LT_RELEASE@.la -lglib-@LT_RELEASE@ @G_MODULE_LIBS@ + +.PHONY: files release + +files: + @files=`ls $(DISTFILES) 2> /dev/null `; for p in $$files; do \ + echo $$p; \ + done + +install-libLTLIBRARIES: libgmodule-1.1.la + @$(NORMAL_INSTALL) + $(mkinstalldirs) $(DESTDIR)$(libdir) + @list='libgmodule-1.1.la'; for p in $$list; do \ + if test -f $$p; then \ + echo "$(LIBTOOL) --mode=install $(INSTALL_DATA) $$p $(DESTDIR)$(libdir)/$$p"; \ + $(LIBTOOL) --mode=install $(INSTALL_DATA) $$p $(DESTDIR)$(libdir)/$$p; \ + else :; fi; \ + done + +release: + $(MAKE) dist distdir=$(PACKAGE)`date +"%y%m%d"` diff --git a/gmodule/gmodule-dl.c b/gmodule/gmodule-dl.c new file mode 100644 index 00000000..09d4bd51 --- /dev/null +++ b/gmodule/gmodule-dl.c @@ -0,0 +1,108 @@ +/* GMODULE - GLIB wrapper code for dynamic module loading + * Copyright (C) 1998 Tim Janik + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ +#include + +/* Perl includes and instead of on some systmes? */ + + +/* dlerror() is not implemented on all systems + */ +#ifndef G_MODULE_HAVE_DLERROR +# ifdef __NetBSD__ +# define dlerror() g_strerror (errno) +# else /* !__NetBSD__ */ +/* could we rely on errno's state here? */ +# define dlerror() "unknown dl-error" +# endif /* !__NetBSD__ */ +#endif /* G_MODULE_HAVE_DLERROR */ + +/* some flags are missing on some systems, so we provide + * harmless defaults. + * The Perl sources say, RTLD_LAZY needs to be defined as (1), + * at least for Solaris 1. + */ +#ifndef RTLD_GLOBAL +#define RTLD_GLOBAL 0 +#endif /* RTLD_GLOBAL */ +#ifndef RTLD_LAZY +#define RTLD_LAZY 1 +#endif /* RTLD_LAZY */ +#ifndef RTLD_NOW +#define RTLD_NOW 0 +#endif /* RTLD_NOW */ + + +/* --- functions --- */ +static gpointer +_g_module_open (const gchar *file_name, + gboolean bind_lazy) +{ + gpointer handle; + + handle = dlopen (file_name, RTLD_GLOBAL | (bind_lazy ? RTLD_LAZY : RTLD_NOW)); + if (!handle) + g_module_set_error (dlerror ()); + + return handle; +} + +static gpointer +_g_module_self (void) +{ + gpointer handle; + + /* to query symbols from the program itself, special link options + * are required on some systems. + */ + + handle = dlopen (NULL, RTLD_GLOBAL | RTLD_LAZY); + if (!handle) + g_module_set_error (dlerror ()); + + return handle; +} + +static void +_g_module_close (gpointer *handle_p, + gboolean is_unref) +{ + /* are there any systems out there that have dlopen()/dlclose() + * without a reference count implementation? + */ + is_unref |= 1; + + if (is_unref) + { + if (dlclose (*handle_p) != 0) + g_module_set_error (dlerror ()); + } +} + +static gpointer +_g_module_symbol (gpointer *handle_p, + const gchar *symbol_name) +{ + gpointer p; + + p = dlsym (*handle_p, symbol_name); + if (!p) + g_module_set_error (dlerror ()); + + return p; +} diff --git a/gmodule/gmodule-dld.c b/gmodule/gmodule-dld.c new file mode 100644 index 00000000..1e5c3faa --- /dev/null +++ b/gmodule/gmodule-dld.c @@ -0,0 +1,82 @@ +/* GMODULE - GLIB wrapper code for dynamic module loading + * Copyright (C) 1998 Tim Janik + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ +#include + + +/* some flags are missing on some systems, so we provide + * harmless defaults. + */ +#ifndef DYNAMIC_PATH +#define DYNAMIC_PATH 0 +#endif /* DYNAMIC_PATH */ + +/* should we have BIND_TOGETHER here as well? */ +#define CONST_BIND_FLAGS (BIND_NONFATAL | BIND_VERBOSE) + + +/* --- functions --- */ +static gpointer +_g_module_open (const gchar *file_name, + gboolean bind_lazy) +{ + gpointer handle; + + handle = shl_load (file_name, CONST_BIND_FLAGS | (bind_lazy ? BIND_DEFERRED : BIND_IMMEDIATE), 0); + if (!handle) + g_module_set_error (g_strerror (errno)); + + return handle; +} + +static gpointer +_g_module_self (void) +{ + gpointer handle; + + handle = PROG_HANDLE; + if (!handle) + g_module_set_error (g_strerror (errno)); + + return handle; +} + +static void +_g_module_close (gpointer *handle_p, + gboolean is_unref) +{ + if (!is_unref) + { + if (shl_unload (*handle_p) != 0) + g_module_set_error (g_strerror (errno)); + } +} + +static gpointer +_g_module_symbol (gpointer *handle_p, + const gchar *symbol_name) +{ + gpointer p = NULL; + + /* should we restrict lookups to TYPE_PROCEDURE? + */ + if (shl_findsym (handle_p, symbol_name, TYPE_UNDEFINED, &p) != 0 || p == NULL) + g_module_set_error (g_strerror (errno)); + + return p; +} diff --git a/gmodule/gmodule.c b/gmodule/gmodule.c new file mode 100644 index 00000000..f5ef2d8a --- /dev/null +++ b/gmodule/gmodule.c @@ -0,0 +1,270 @@ +/* GLIB - Library of useful routines for C programming + * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ +#include "gmodule.h" +#include "gmoduleconf.h" +#include +#include + + +/* We maintain a list of modules, so we can reference count them. + * That's needed because some platforms don't support refernce counts on + * modules (http://www.stat.umn.edu/~luke/xls/projects/dlbasics/dlbasics.html). + * Also, the module for the program itself is kept seperatedly for + * faster access. + */ + + +/* --- structures --- */ +struct _GModule +{ + gchar *file_name; + gpointer handle; + guint ref_count; + GModule *next; +}; + + +/* --- prototypes --- */ +static gpointer _g_module_open (const gchar *file_name, + gboolean bind_lazy); +static void _g_module_close (gpointer *handle_p, + gboolean is_unref); +static gpointer _g_module_self (void); +static gpointer _g_module_symbol (gpointer *handle_p, + const gchar *symbol_name); +static inline void g_module_set_error (const gchar *error); +static inline GModule* g_module_find_by_handle (gpointer handle); +static inline GModule* g_module_find_by_name (const gchar *name); + + +/* --- variables --- */ +static GModule *modules = NULL; +static GModule *main_module = NULL; +static gchar *module_error = NULL; + + +/* --- inline functions --- */ +static inline GModule* +g_module_find_by_handle (gpointer handle) +{ + GModule *module; + + for (module = modules; module; module = module->next) + if (handle == module->handle) + return module; + return NULL; +} + +static inline GModule* +g_module_find_by_name (const gchar *name) +{ + GModule *module; + + for (module = modules; module; module = module->next) + if (strcmp (name, module->file_name) == 0) + return module; + return NULL; +} + +static inline void +g_module_set_error (const gchar *error) +{ + if (module_error) + g_free (module_error); + if (error) + module_error = g_strdup (error); + else + module_error = NULL; + errno = 0; +} + + +/* --- include platform specifc code --- */ +#define CHECK_ERROR(rv) { g_module_set_error (NULL); } +#if (G_MODULE_IMPL == G_MODULE_IMPL_DL) +#include "gmodule-dl.c" +#elif (G_MODULE_IMPL == G_MODULE_IMPL_DLD) +#include "gmodule-dld.c" +#else +#undef CHECK_ERROR +#define CHECK_ERROR(rv) { g_module_set_error ("unsupported"); return rv; } +#endif /* no implementation */ + + +/* --- functions --- */ +gboolean +g_module_supported (void) +{ + CHECK_ERROR (FALSE); + + return TRUE; +} + +GModule* +g_module_open (const gchar *file_name, + GModuleFlags flags) +{ + GModule *module; + gpointer handle; + + CHECK_ERROR (NULL); + + if (!file_name) + { + if (!main_module) + { + handle = _g_module_self (); + if (handle) + { + main_module = g_new (GModule, 1); + main_module->file_name = NULL; + main_module->ref_count = 1; + main_module->next = NULL; + main_module->handle = handle; + } + } + + return main_module; + } + + /* we first search the module list by name */ + module = g_module_find_by_name (file_name); + if (module) + { + module->ref_count++; + + return module; + } + + /* open the module */ + handle = _g_module_open (file_name, (flags & G_MODULE_BIND_LAZY) != 0); + if (handle) + { + GModule *module; + + /* search the module list by handle, since file names are not unique */ + module = g_module_find_by_handle (handle); + if (module) + { + _g_module_close (&module->handle, TRUE); + module->ref_count++; + g_module_set_error (NULL); + + return module; + } + + module = g_new (GModule, 1); + module->file_name = g_strdup (file_name); + module->handle = handle; + module->ref_count = 1; + module->next = modules; + modules = module; + + return module; + } + + return NULL; +} + +gboolean +g_module_close (GModule *module) +{ + CHECK_ERROR (FALSE); + + g_return_val_if_fail (module != NULL, FALSE); + g_return_val_if_fail (module->ref_count > 0, FALSE); + + if (module != main_module) + module->ref_count--; + + if (!module->ref_count) + { + GModule *last; + GModule *node; + + _g_module_close (&module->handle, FALSE); + g_free (module->file_name); + + last = NULL; + node = modules; + while (node) + { + if (node == module) + { + if (last) + last->next = node->next; + else + modules = node->next; + break; + } + last = node; + node = last->next; + } + g_free (module); + } + + return module_error == NULL; +} + +gchar* +g_module_error (void) +{ + return module_error; +} + +gboolean +g_module_symbol (GModule *module, + const gchar *symbol_name, + gconstpointer *symbol) +{ + if (symbol) + *symbol = NULL; + CHECK_ERROR (FALSE); + + g_return_val_if_fail (module != NULL, FALSE); + g_return_val_if_fail (symbol_name != NULL, FALSE); + g_return_val_if_fail (symbol != NULL, FALSE); + +#ifdef G_MODULE_NEED_USCORE + symbol_name = g_strconcat ("_", symbol_name, NULL); + *symbol = _g_module_symbol (&module->handle, symbol_name); + g_free (symbol_name); +#else /* !G_MODULE_NEED_USCORE */ + *symbol = _g_module_symbol (&module->handle, symbol_name); +#endif /* !G_MODULE_NEED_USCORE */ + + if (module_error) + { + *symbol = NULL; + return FALSE; + } + + return TRUE; +} + +gchar* +g_module_name (GModule *module) +{ + g_return_val_if_fail (module != NULL, NULL); + + if (module == main_module) + return "main"; + + return module->file_name; +} diff --git a/gmodule/gmoduleconf.h.in b/gmodule/gmoduleconf.h.in new file mode 100644 index 00000000..fb15f156 --- /dev/null +++ b/gmodule/gmoduleconf.h.in @@ -0,0 +1,48 @@ +/* GMODULE - GLIB wrapper code for dynamic module loading + * Copyright (C) 1998 Tim Janik + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ +#ifndef __G_MODULE_CONF_H__ +#define __G_MODULE_CONF_H__ + + +#ifdef __cplusplus +extern "C" { +#pragma } +#endif /* __cplusplus */ + + +#define G_MODULE_IMPL_NONE 0 +#define G_MODULE_IMPL_DL 1 +#define G_MODULE_IMPL_DLD 2 + +#define G_MODULE_IMPL @G_MODULE_IMPL@ +#undef G_MODULE_HAVE_DLERROR +#if (@G_MODULE_HAVE_DLERROR@) +#define G_MODULE_HAVE_DLERROR +#endif +#if (@G_MODULE_NEED_USCORE@) || defined (hp9000s300) || defined (__hp9000s300) || defined (__hp9000s300__) +#define G_MODULE_NEED_USCORE +#endif + + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + + +#endif /* __G_MODULE_CONF_H__ */ diff --git a/gmodule/libgplugin_a.c b/gmodule/libgplugin_a.c new file mode 100644 index 00000000..5f8ff5a5 --- /dev/null +++ b/gmodule/libgplugin_a.c @@ -0,0 +1,63 @@ +/* libgplugin_a.c - test plugin for testgmodule + * Copyright (C) 1998 Tim Janik + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ +#include + +G_MODULE_EXPORT void +gplugin_a_func (void) +{ + g_print ("GPluginA: Hello world\n"); +} + +G_MODULE_EXPORT void +gplugin_clash_func (void) +{ + g_print ("GPluginA: Hello plugin clash\n"); +} + +G_MODULE_EXPORT void +g_clash_func (void) +{ + g_print ("GPluginA: Hello global clash\n"); +} + +G_MODULE_EXPORT void +gplugin_say_boo_func (void) +{ + g_print ("GPluginA: BOOH!\n"); +} + +void +gplugin_a_module_func (GModule *module) +{ + void(*f)(void) = NULL; + gchar *string; + + string = "gplugin_say_boo_func"; + g_print ("GPluginA: retrive symbol `%s' from \"%s\"\n", + string, + g_basename (g_module_name (module))); + if (!g_module_symbol (module, string, &f)) + { + g_print ("error: %s\n", g_module_error ()); + exit (1); + } + + g_print ("GPluginA: call that function(%p): ", f); + f (); +} diff --git a/gmodule/libgplugin_b.c b/gmodule/libgplugin_b.c new file mode 100644 index 00000000..b31a936a --- /dev/null +++ b/gmodule/libgplugin_b.c @@ -0,0 +1,43 @@ +/* libgplugin_b.c - test plugin for testgmodule + * Copyright (C) 1998 Tim Janik + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ +#include + +G_MODULE_EXPORT void +gplugin_b_func (void) +{ + g_print ("GPluginB: Hello world\n"); +} + +G_MODULE_EXPORT void +gplugin_clash_func (void) +{ + g_print ("GPluginB: Hello plugin clash\n"); +} + +G_MODULE_EXPORT void +g_clash_func (void) +{ + g_print ("GPluginB: Hello global clash\n"); +} + +G_MODULE_EXPORT void +gplugin_say_boo_func (void) +{ + g_print ("GPluginB: BOOH!\n"); +} diff --git a/gmodule/testgmodule.c b/gmodule/testgmodule.c new file mode 100644 index 00000000..3a18f78a --- /dev/null +++ b/gmodule/testgmodule.c @@ -0,0 +1,170 @@ +/* testgmodule.c - test program for GMODULE + * Copyright (C) 1998 Tim Janik + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ +#include + + +void +g_clash_func (void) +{ + g_print ("GModule: Hello global clash\n"); +} + +typedef void (*SimpleFunc) (void); +typedef void (*GModuleFunc) (GModule *); + +SimpleFunc gplugin_clash_func; + + +int +main (int arg, + char *argv[]) +{ + GModule *module_self, *module_a, *module_b; + gchar *string; + gchar *plugin_a, *plugin_b; + SimpleFunc f_a, f_b, f_self; + GModuleFunc gmod_f; + + string = g_get_current_dir (); + g_print ("testgmodule (%s):\n", string); + + plugin_a = g_strconcat (string, "/.libs/", "libgplugin_a.so", NULL); + plugin_b = g_strconcat (string, "/.libs/", "libgplugin_b.so", NULL); + g_free (string); + + /* module handles + */ + g_print ("get main module handle\n"); + module_self = g_module_open (NULL, G_MODULE_BIND_LAZY); + if (!module_self) + { + g_print ("error: %s\n", g_module_error ()); + return 1; + } + g_print ("load plugin from \"%s\"\n", plugin_a); + module_a = g_module_open (plugin_a, G_MODULE_BIND_LAZY); + if (!module_a) + { + g_print ("error: %s\n", g_module_error ()); + return 1; + } + g_print ("load plugin from \"%s\"\n", plugin_b); + module_b = g_module_open (plugin_b, G_MODULE_BIND_LAZY); + if (!module_b) + { + g_print ("error: %s\n", g_module_error ()); + return 1; + } + + /* get plugin specific symbols and call them + */ + string = "gplugin_a_func"; + g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_a))); + if (!g_module_symbol (module_a, string, &f_a)) + { + g_print ("error: %s\n", g_module_error ()); + return 1; + } + string = "gplugin_b_func"; + g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_b))); + if (!g_module_symbol (module_b, string, &f_b)) + { + g_print ("error: %s\n", g_module_error ()); + return 1; + } + g_print ("call plugin function(%p) A: ", f_a); + f_a (); + g_print ("call plugin function(%p) B: ", f_b); + f_b (); + + /* get and call globally clashing functions + */ + string = "g_clash_func"; + g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_self))); + if (!g_module_symbol (module_self, string, &f_self)) + { + g_print ("error: %s\n", g_module_error ()); + return 1; + } + g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_a))); + if (!g_module_symbol (module_a, string, &f_a)) + { + g_print ("error: %s\n", g_module_error ()); + return 1; + } + g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_b))); + if (!g_module_symbol (module_b, string, &f_b)) + { + g_print ("error: %s\n", g_module_error ()); + return 1; + } + g_print ("call plugin function(%p) self: ", f_self); + f_self (); + g_print ("call plugin function(%p) A: ", f_a); + f_a (); + g_print ("call plugin function(%p) B: ", f_b); + f_b (); + + /* get and call clashing plugin functions + */ + string = "gplugin_clash_func"; + g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_a))); + if (!g_module_symbol (module_a, string, &f_a)) + { + g_print ("error: %s\n", g_module_error ()); + return 1; + } + g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_b))); + if (!g_module_symbol (module_b, string, &f_b)) + { + g_print ("error: %s\n", g_module_error ()); + return 1; + } + g_print ("call plugin function(%p) A: ", f_a); + gplugin_clash_func = f_a; + gplugin_clash_func (); + g_print ("call plugin function(%p) B: ", f_b); + gplugin_clash_func = f_b; + gplugin_clash_func (); + + /* call gmodule function form A + */ + string = "gplugin_a_module_func"; + g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_a))); + if (!g_module_symbol (module_a, string, &gmod_f)) + { + g_print ("error: %s\n", g_module_error ()); + return 1; + } + g_print ("call plugin A's module function(%p):\n{\n", gmod_f); + gmod_f (module_b); + g_print ("}\n"); + + + /* unload plugins + */ + g_print ("unload plugin A:\n"); + if (!g_module_close (module_a)) + g_print ("error: %s\n", g_module_error ()); + g_print ("unload plugin B:\n"); + if (!g_module_close (module_b)) + g_print ("error: %s\n", g_module_error ()); + + return 0; +} -- 2.34.1