llvm-6502/lib/VMCore/Module.cpp

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//===-- Module.cpp - Implement the Module class ------------------*- C++ -*--=//
//
// This file implements the Module class for the VMCore library.
//
//===----------------------------------------------------------------------===//
#include "llvm/ValueHolderImpl.h"
#include "llvm/InstrTypes.h"
#include "llvm/BasicBlock.h"
#include "llvm/Method.h"
#include "llvm/Module.h"
// Instantiate Templates - This ugliness is the price we have to pay
// for having a DefHolderImpl.h file seperate from DefHolder.h! :(
//
template class ValueHolder<Method, Module>;
Module::Module()
: SymTabValue(0/*TODO: REAL TYPE*/, Value::ModuleVal, ""),
MethodList(this, this) {
}
Module::~Module() {
dropAllReferences();
MethodList.delete_all();
MethodList.setParent(0);
}
// dropAllReferences() - This function causes all the subinstructions to "let
// go" of all references that they are maintaining. This allows one to
// 'delete' a whole class at a time, even though there may be circular
// references... first all references are dropped, and all use counts go to
// zero. Then everything is delete'd for real. Note that no operations are
// valid on an object that has "dropped all references", except operator
// delete.
//
void Module::dropAllReferences() {
MethodListType::iterator MI = MethodList.begin();
for (; MI != MethodList.end(); MI++)
(*MI)->dropAllReferences();
}