Const-correctness.

llvm-svn: 81249

llvm/include/llvm/System/Program.h

@@ -40,7 +40,7 @@ namespace sys {
     ~Program();
 
     /// Return process ID of this program.
-    unsigned GetPid();
+    unsigned GetPid() const;
 
     /// This function executes the program using the \p arguments provided.  The
     /// invoked program will inherit the stdin, stdout, and stderr file

llvm/lib/System/Unix/Program.inc

@@ -38,7 +38,7 @@ Program::Program() : Data_(0) {}
 
 Program::~Program() {}
 
-unsigned Program::GetPid() {
+unsigned Program::GetPid() const {
   return reinterpret_cast<unsigned>(Data_);
 }
 

llvm/lib/System/Win32/Program.inc

@@ -35,7 +35,7 @@ Program::~Program() {
   }
 }
 
-unsigned Program::GetPid() {
+unsigned Program::GetPid() const {
   HANDLE hProcess = reinterpret_cast<HANDLE>(Data_);
   return GetProcessId(hProcess);
 }