diff options
Diffstat (limited to 'indra/newview/llappviewerlinux_api_dbus.cpp')
| -rw-r--r-- | indra/newview/llappviewerlinux_api_dbus.cpp | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/indra/newview/llappviewerlinux_api_dbus.cpp b/indra/newview/llappviewerlinux_api_dbus.cpp new file mode 100644 index 0000000000..24dfea1c6a --- /dev/null +++ b/indra/newview/llappviewerlinux_api_dbus.cpp @@ -0,0 +1,131 @@ +/** + * @file llappviewerlinux_api_dbus.cpp + * @brief dynamic DBus symbol-grabbing code + * + * $LicenseInfo:firstyear=2008&license=viewergpl$ + * + * Copyright (c) 2008, Linden Research, Inc. + * + * Second Life Viewer Source Code + * The source code in this file ("Source Code") is provided by Linden Lab + * to you under the terms of the GNU General Public License, version 2.0 + * ("GPL"), unless you have obtained a separate licensing agreement + * ("Other License"), formally executed by you and Linden Lab. Terms of + * the GPL can be found in doc/GPL-license.txt in this distribution, or + * online at http://secondlife.com/developers/opensource/gplv2 + * + * There are special exceptions to the terms and conditions of the GPL as + * it is applied to this Source Code. View the full text of the exception + * in the file doc/FLOSS-exception.txt in this software distribution, or + * online at http://secondlife.com/developers/opensource/flossexception + * + * By copying, modifying or distributing this software, you acknowledge + * that you have read and understood your obligations described above, + * and agree to abide by those obligations. + * + * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO + * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, + * COMPLETENESS OR PERFORMANCE. + * $/LicenseInfo$ + */ + +#if LL_DBUS_ENABLED + +#include "linden_common.h" + +extern "C" { +#include <dbus/dbus-glib.h> + +#include "apr_pools.h" +#include "apr_dso.h" +} + +#define DEBUGMSG(...) lldebugs << llformat(__VA_ARGS__) << llendl +#define INFOMSG(...) llinfos << llformat(__VA_ARGS__) << llendl +#define WARNMSG(...) llwarns << llformat(__VA_ARGS__) << llendl + +#define LL_DBUS_SYM(REQUIRED, DBUSSYM, RTN, ...) RTN (*ll##DBUSSYM)(__VA_ARGS__) = NULL +#include "llappviewerlinux_api_dbus_syms_raw.inc" +#undef LL_DBUS_SYM + +static bool sSymsGrabbed = false; +static apr_pool_t *sSymDBUSDSOMemoryPool = NULL; +static apr_dso_handle_t *sSymDBUSDSOHandleG = NULL; + +bool grab_dbus_syms(std::string dbus_dso_name) +{ + if (sSymsGrabbed) + { + // already have grabbed good syms + return TRUE; + } + + bool sym_error = false; + bool rtn = false; + apr_status_t rv; + apr_dso_handle_t *sSymDBUSDSOHandle = NULL; + +#define LL_DBUS_SYM(REQUIRED, DBUSSYM, RTN, ...) do{rv = apr_dso_sym((apr_dso_handle_sym_t*)&ll##DBUSSYM, sSymDBUSDSOHandle, #DBUSSYM); if (rv != APR_SUCCESS) {INFOMSG("Failed to grab symbol: %s", #DBUSSYM); if (REQUIRED) sym_error = true;} else DEBUGMSG("grabbed symbol: %s from %p", #DBUSSYM, (void*)ll##DBUSSYM);}while(0) + + //attempt to load the shared library + apr_pool_create(&sSymDBUSDSOMemoryPool, NULL); + + if ( APR_SUCCESS == (rv = apr_dso_load(&sSymDBUSDSOHandle, + dbus_dso_name.c_str(), + sSymDBUSDSOMemoryPool) )) + { + INFOMSG("Found DSO: %s", dbus_dso_name.c_str()); + +#include "llappviewerlinux_api_dbus_syms_raw.inc" + + if ( sSymDBUSDSOHandle ) + { + sSymDBUSDSOHandleG = sSymDBUSDSOHandle; + sSymDBUSDSOHandle = NULL; + } + + rtn = !sym_error; + } + else + { + INFOMSG("Couldn't load DSO: %s", dbus_dso_name.c_str()); + rtn = false; // failure + } + + if (sym_error) + { + WARNMSG("Failed to find necessary symbols in DBUS-GLIB libraries."); + } +#undef LL_DBUS_SYM + + sSymsGrabbed = rtn; + return rtn; +} + + +void ungrab_dbus_syms() +{ + // should be safe to call regardless of whether we've + // actually grabbed syms. + + if ( sSymDBUSDSOHandleG ) + { + apr_dso_unload(sSymDBUSDSOHandleG); + sSymDBUSDSOHandleG = NULL; + } + + if ( sSymDBUSDSOMemoryPool ) + { + apr_pool_destroy(sSymDBUSDSOMemoryPool); + sSymDBUSDSOMemoryPool = NULL; + } + + // NULL-out all of the symbols we'd grabbed +#define LL_DBUS_SYM(REQUIRED, DBUSSYM, RTN, ...) do{ll##DBUSSYM = NULL;}while(0) +#include "llappviewerlinux_api_dbus_syms_raw.inc" +#undef LL_DBUS_SYM + + sSymsGrabbed = false; +} + +#endif // LL_DBUS_ENABLED |