/indra/newview/llappviewerlinux_api_dbus.cpp
C++ | 126 lines | 72 code | 24 blank | 30 comment | 11 complexity | df99f3576b85507f1b0fd41de906c792 MD5 | raw file
Possible License(s): LGPL-2.1
- /**
- * @file llappviewerlinux_api_dbus.cpp
- * @brief dynamic DBus symbol-grabbing code
- *
- * $LicenseInfo:firstyear=2008&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
- * $/LicenseInfo$
- */
- #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(...) do { lldebugs << llformat(__VA_ARGS__) << llendl; } while(0)
- #define INFOMSG(...) do { llinfos << llformat(__VA_ARGS__) << llendl; } while(0)
- #define WARNMSG(...) do { llwarns << llformat(__VA_ARGS__) << llendl; } while(0)
- #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