mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-19 03:29:22 +00:00
8709927af8
nightly tests to be really messed up. The problem was that the new leakdetector was depending on undefined behavior: the order of destruction of static objects. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11488 91177308-0d34-0410-b5e6-96231b3b80d8
111 lines
3.1 KiB
C++
111 lines
3.1 KiB
C++
//===-- LeakDetector.cpp - Implement LeakDetector interface ---------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements the LeakDetector class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Support/LeakDetector.h"
|
|
#include "llvm/Value.h"
|
|
#include <set>
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
template <typename T>
|
|
struct LeakDetectorImpl {
|
|
LeakDetectorImpl(const char* const name) : Cache(0), Name(name) { }
|
|
|
|
// Because the most common usage pattern, by far, is to add a
|
|
// garbage object, then remove it immediately, we optimize this
|
|
// case. When an object is added, it is not added to the set
|
|
// immediately, it is added to the CachedValue Value. If it is
|
|
// immediately removed, no set search need be performed.
|
|
void addGarbage(const T* o) {
|
|
if (Cache) {
|
|
assert(Ts.count(Cache) == 0 && "Object already in set!");
|
|
Ts.insert(Cache);
|
|
}
|
|
Cache = o;
|
|
}
|
|
|
|
void removeGarbage(const T* o) {
|
|
if (o == Cache)
|
|
Cache = 0; // Cache hit
|
|
else
|
|
Ts.erase(o);
|
|
}
|
|
|
|
bool hasGarbage(const std::string& Message) {
|
|
addGarbage(0); // Flush the Cache
|
|
|
|
assert(Cache == 0 && "No value should be cached anymore!");
|
|
|
|
if (!Ts.empty()) {
|
|
std::cerr
|
|
<< "Leaked " << Name << " objects found: " << Message << ":\n\t";
|
|
std::copy(Ts.begin(), Ts.end(),
|
|
std::ostream_iterator<const T*>(std::cerr, " "));
|
|
std::cerr << '\n';
|
|
|
|
// Clear out results so we don't get duplicate warnings on
|
|
// next call...
|
|
Ts.clear();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
std::set<const T*> Ts;
|
|
const T* Cache;
|
|
const char* const Name;
|
|
};
|
|
|
|
typedef LeakDetectorImpl<void> Objects;
|
|
typedef LeakDetectorImpl<Value> LLVMObjects;
|
|
|
|
Objects& getObjects() {
|
|
static Objects *o = 0;
|
|
if (o == 0)
|
|
o = new Objects("GENERIC");
|
|
return *o;
|
|
}
|
|
|
|
LLVMObjects& getLLVMObjects() {
|
|
static LLVMObjects *o = 0;
|
|
if (o == 0)
|
|
o = new LLVMObjects("LLVM");
|
|
return *o;
|
|
}
|
|
}
|
|
|
|
void LeakDetector::addGarbageObjectImpl(void *Object) {
|
|
getObjects().addGarbage(Object);
|
|
}
|
|
|
|
void LeakDetector::addGarbageObjectImpl(const Value *Object) {
|
|
getLLVMObjects().addGarbage(Object);
|
|
}
|
|
|
|
void LeakDetector::removeGarbageObjectImpl(void *Object) {
|
|
getObjects().removeGarbage(Object);
|
|
}
|
|
|
|
void LeakDetector::removeGarbageObjectImpl(const Value *Object) {
|
|
getLLVMObjects().removeGarbage(Object);
|
|
}
|
|
|
|
void LeakDetector::checkForGarbageImpl(const std::string &Message) {
|
|
// use non-short-circuit version so that both checks are performed
|
|
if (getObjects().hasGarbage(Message) |
|
|
getLLVMObjects().hasGarbage(Message))
|
|
std::cerr << "\nThis is probably because you removed an object, but didn't "
|
|
"delete it. Please check your code for memory leaks.\n";
|
|
}
|