You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
188 lines
6.7 KiB
188 lines
6.7 KiB
/*
|
|
Copyright 2005-2013 Intel Corporation. All Rights Reserved.
|
|
|
|
This file is part of Threading Building Blocks.
|
|
|
|
Threading Building Blocks is free software; you can redistribute it
|
|
and/or modify it under the terms of the GNU General Public License
|
|
version 2 as published by the Free Software Foundation.
|
|
|
|
Threading Building Blocks 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with Threading Building Blocks; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
As a special exception, you may use this file as part of a free software
|
|
library without restriction. Specifically, if other files instantiate
|
|
templates or use macros or inline functions from this file, or you compile
|
|
this file and link it with other files to produce an executable, this
|
|
file does not by itself cause the resulting executable to be covered by
|
|
the GNU General Public License. This exception does not however
|
|
invalidate any other reasons why the executable file might be covered by
|
|
the GNU General Public License.
|
|
*/
|
|
|
|
#ifndef __TBB_runtime_loader_H
|
|
#define __TBB_runtime_loader_H
|
|
|
|
#if ! TBB_PREVIEW_RUNTIME_LOADER
|
|
#error Set TBB_PREVIEW_RUNTIME_LOADER to include runtime_loader.h
|
|
#endif
|
|
|
|
#include "tbb/tbb_stddef.h"
|
|
#include <climits>
|
|
|
|
#if _MSC_VER
|
|
#if ! __TBB_NO_IMPLICIT_LINKAGE
|
|
#ifdef _DEBUG
|
|
#pragma comment( linker, "/nodefaultlib:tbb_debug.lib" )
|
|
#pragma comment( linker, "/defaultlib:tbbproxy_debug.lib" )
|
|
#else
|
|
#pragma comment( linker, "/nodefaultlib:tbb.lib" )
|
|
#pragma comment( linker, "/defaultlib:tbbproxy.lib" )
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
namespace tbb {
|
|
|
|
namespace interface6 {
|
|
|
|
//! Load TBB at runtime.
|
|
/*!
|
|
|
|
\b Usage:
|
|
|
|
In source code:
|
|
|
|
\code
|
|
#include "tbb/runtime_loader.h"
|
|
|
|
char const * path[] = { "<install dir>/lib/ia32", NULL };
|
|
tbb::runtime_loader loader( path );
|
|
|
|
// Now use TBB.
|
|
\endcode
|
|
|
|
Link with \c tbbproxy.lib (or \c libtbbproxy.a) instead of \c tbb.lib (\c libtbb.dylib,
|
|
\c libtbb.so).
|
|
|
|
TBB library will be loaded at runtime from \c <install dir>/lib/ia32 directory.
|
|
|
|
\b Attention:
|
|
|
|
All \c runtime_loader objects (in the same module, i.e. exe or dll) share some global state.
|
|
The most noticeable piece of global state is loaded TBB library.
|
|
There are some implications:
|
|
|
|
- Only one TBB library can be loaded per module.
|
|
|
|
- If one object has already loaded TBB library, another object will not load TBB.
|
|
If the loaded TBB library is suitable for the second object, both will use TBB
|
|
cooperatively, otherwise the second object will report an error.
|
|
|
|
- \c runtime_loader objects will not work (correctly) in parallel due to absence of
|
|
syncronization.
|
|
|
|
*/
|
|
|
|
class runtime_loader : tbb::internal::no_copy {
|
|
|
|
public:
|
|
|
|
//! Error mode constants.
|
|
enum error_mode {
|
|
em_status, //!< Save status of operation and continue.
|
|
em_throw, //!< Throw an exception of tbb::runtime_loader::error_code type.
|
|
em_abort //!< Print message to \c stderr and call \c abort().
|
|
}; // error_mode
|
|
|
|
//! Error codes.
|
|
enum error_code {
|
|
ec_ok, //!< No errors.
|
|
ec_bad_call, //!< Invalid function call (e. g. load() called when TBB is already loaded).
|
|
ec_bad_arg, //!< Invalid argument passed.
|
|
ec_bad_lib, //!< Invalid library found (e. g. \c TBB_runtime_version symbol not found).
|
|
ec_bad_ver, //!< TBB found but version is not suitable.
|
|
ec_no_lib //!< No suitable TBB library found.
|
|
}; // error_code
|
|
|
|
//! Initialize object but do not load TBB.
|
|
runtime_loader( error_mode mode = em_abort );
|
|
|
|
//! Initialize object and load TBB.
|
|
/*!
|
|
See load() for details.
|
|
|
|
If error mode is \c em_status, call status() to check whether TBB was loaded or not.
|
|
*/
|
|
runtime_loader(
|
|
char const * path[], //!< List of directories to search TBB in.
|
|
int min_ver = TBB_INTERFACE_VERSION, //!< Minimal suitable version of TBB.
|
|
int max_ver = INT_MAX, //!< Maximal suitable version of TBB.
|
|
error_mode mode = em_abort //!< Error mode for this object.
|
|
);
|
|
|
|
//! Destroy object.
|
|
~runtime_loader();
|
|
|
|
//! Load TBB.
|
|
/*!
|
|
The method searches the directories specified in \c path[] array for the TBB library.
|
|
When the library is found, it is loaded and its version is checked. If the version is
|
|
not suitable, the library is unloaded, and the search continues.
|
|
|
|
\b Note:
|
|
|
|
For security reasons, avoid using relative directory names. For example, never load
|
|
TBB from current (\c "."), parent (\c "..") or any other relative directory (like
|
|
\c "lib" ). Use only absolute directory names (e. g. "/usr/local/lib").
|
|
|
|
For the same security reasons, avoid using system default directories (\c "") on
|
|
Windows. (See http://www.microsoft.com/technet/security/advisory/2269637.mspx for
|
|
details.)
|
|
|
|
Neglecting these rules may cause your program to execute 3-rd party malicious code.
|
|
|
|
\b Errors:
|
|
- \c ec_bad_call - TBB already loaded by this object.
|
|
- \c ec_bad_arg - \p min_ver and/or \p max_ver negative or zero,
|
|
or \p min_ver > \p max_ver.
|
|
- \c ec_bad_ver - TBB of unsuitable version already loaded by another object.
|
|
- \c ec_no_lib - No suitable library found.
|
|
*/
|
|
error_code
|
|
load(
|
|
char const * path[], //!< List of directories to search TBB in.
|
|
int min_ver = TBB_INTERFACE_VERSION, //!< Minimal suitable version of TBB.
|
|
int max_ver = INT_MAX //!< Maximal suitable version of TBB.
|
|
|
|
);
|
|
|
|
|
|
//! Report status.
|
|
/*!
|
|
If error mode is \c em_status, the function returns status of the last operation.
|
|
*/
|
|
error_code status();
|
|
|
|
private:
|
|
|
|
error_mode const my_mode;
|
|
error_code my_status;
|
|
bool my_loaded;
|
|
|
|
}; // class runtime_loader
|
|
|
|
} // namespace interface6
|
|
|
|
using interface6::runtime_loader;
|
|
|
|
} // namespace tbb
|
|
|
|
#endif /* __TBB_runtime_loader_H */
|
|
|