[llvm-commits] CVS: llvm/lib/System/Win32/DynamicLibrary.cpp

[Reid Spencer]

Changes in directory llvm/lib/System/Win32:

DynamicLibrary.cpp added (r1.1)
---
Log message:

Dynamic Library abstraction. This makes the abstraction of a single dynamic
library (shared library/shared object) whose symbols can be looked up 
dynamically. Used for plug-ins.


---
Diffs of the changes:  (+47 -0)

Index: llvm/lib/System/Win32/DynamicLibrary.cpp
diff -c /dev/null llvm/lib/System/Win32/DynamicLibrary.cpp:1.1
*** /dev/null	Wed Nov 17 22:33:50 2004
--- llvm/lib/System/Win32/DynamicLibrary.cpp	Wed Nov 17 22:33:40 2004
***************
*** 0 ****
--- 1,47 ----
+ //===- Win32/DynamicLibrary.cpp - Win32 DL Implementation -------*- C++ -*-===//
+ // 
+ //                     The LLVM Compiler Infrastructure
+ //
+ // This file was developed by Reid Spencer and is distributed under the 
+ // University of Illinois Open Source License. See LICENSE.TXT for details.
+ // 
+ //===----------------------------------------------------------------------===//
+ //
+ // This file provides the Win32 specific implementation of the DynamicLibrary
+ //
+ //===----------------------------------------------------------------------===//
+ 
+ #include "Win32.h"
+ 
+ namespace llvm {
+ using namespace sys;
+ 
+ //===----------------------------------------------------------------------===//
+ //=== WARNING: Implementation here must contain only Win32 specific code 
+ //===          and must not be UNIX code
+ //===----------------------------------------------------------------------===//
+ 
+ DynamicLibrary::DynamicLibrary(const char*filename) : handle(0) {
+   handle = LoadLibrary(filename);
+ 
+   if (handle == 0) {
+     char Buffer[100];
+     // FIXME: This should use FormatMessage
+     sprintf(Buffer, "Windows error code %d\n", GetLastError());
+     throw std::string(Buffer);
+   }
+ }
+ 
+ DynamicLibrary::~DynamicLibrary() {
+   if (handle)
+     FreeLibrary(handle);
+ }
+ 
+ void *DynamicLibrary::GetAddressOfSymbol(const char *symbolName) {
+   assert(handle !=0 && "Invalid DynamicLibrary handle");
+   return GetProcAddress(handle, symbolName);
+ }
+ 
+ }
+ 
+ // vim: sw=2 smartindent smarttab tw=80 autoindent expandtab