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0de02a6ba9
library (shared library/shared object) whose symbols can be looked up dynamically. Used for plug-ins. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17940 91177308-0d34-0410-b5e6-96231b3b80d8
79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
//===-- DynamicLibrary.cpp - Runtime link/load libraries --------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by Reid Spencer and is distributed under the
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// University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This header file implements the operating system DynamicLibrary concept.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/System/DynamicLibrary.h"
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#include "llvm/Config/dlfcn.h"
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#include <cassert>
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//===----------------------------------------------------------------------===//
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//=== WARNING: Implementation here must contain only TRULY operating system
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//=== independent code.
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//===----------------------------------------------------------------------===//
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#ifdef HAVE_LTDL_H
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namespace llvm {
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using namespace sys;
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#ifdef HAVE_LT_DLOPEN
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DynamicLibrary::DynamicLibrary(const char*filename) : handle(0) {
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if (0 != lt_dlinit())
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throw std::string(lt_dlerror());
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handle = lt_dlopen(filename);
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if (handle == 0)
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handle = lt_dlopenext(filename);
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if (handle == 0)
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throw std::string("Can't open dynamic library:") + filename;
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}
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DynamicLibrary::~DynamicLibrary() {
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if (handle)
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lt_dlclose((lt_dlhandle)handle);
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lt_dlexit();
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}
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void *DynamicLibrary::GetAddressOfSymbol(const char *symbolName) {
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assert(handle != 0 && "Invalid DynamicLibrary handle");
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return lt_dlsym((lt_dlhandle) handle,symbolName);
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}
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#else
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DynamicLibrary::DynamicLibrary(const char*filename) : handle(0) {
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assert(!"Have ltdl.h but not libltdl.a!");
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}
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DynamicLibrary::~DynamicLibrary() {
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assert(!"Have ltdl.h but not libltdl.a!");
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}
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void *DynamicLibrary::GetAddressOfSymbol(const char *symbolName) {
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assert(!"Have ltdl.h but not libltdl.a!");
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return 0;
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}
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#endif // HAVE_DLOPEN
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} // namespace llvm
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#else // HAVE_LTDL_H
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#include "platform/DynamicLibrary.cpp"
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#endif
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