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// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2011 Gael Guennebaud <gael.guennebaud@inria.fr>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// Various sanity tests with exceptions:
// - no memory leak when a custom scalar type trow an exceptions
// - todo: complete the list of tests!
#define EIGEN_STACK_ALLOCATION_LIMIT 100000000
#include "main.h"
struct my_exception
{
my_exception() {}
~my_exception() {}
};
class ScalarWithExceptions
{
public:
ScalarWithExceptions() { init(); }
ScalarWithExceptions(const float& _v) { init(); *v = _v; }
ScalarWithExceptions(const ScalarWithExceptions& other) { init(); *v = *(other.v); }
~ScalarWithExceptions() {
delete v;
instances--;
}
void init() {
v = new float;
instances++;
}
ScalarWithExceptions operator+(const ScalarWithExceptions& other) const
{
countdown--;
if(countdown<=0)
throw my_exception();
return ScalarWithExceptions(*v+*other.v);
}
ScalarWithExceptions operator-(const ScalarWithExceptions& other) const
{ return ScalarWithExceptions(*v-*other.v); }
ScalarWithExceptions operator*(const ScalarWithExceptions& other) const
{ return ScalarWithExceptions((*v)*(*other.v)); }
ScalarWithExceptions& operator+=(const ScalarWithExceptions& other)
{ *v+=*other.v; return *this; }
ScalarWithExceptions& operator-=(const ScalarWithExceptions& other)
{ *v-=*other.v; return *this; }
ScalarWithExceptions& operator=(const ScalarWithExceptions& other)
{ *v = *(other.v); return *this; }
bool operator==(const ScalarWithExceptions& other) const
{ return *v==*other.v; }
bool operator!=(const ScalarWithExceptions& other) const
{ return *v!=*other.v; }
float* v;
static int instances;
static int countdown;
};
ScalarWithExceptions real(const ScalarWithExceptions &x) { return x; }
ScalarWithExceptions imag(const ScalarWithExceptions & ) { return 0; }
ScalarWithExceptions conj(const ScalarWithExceptions &x) { return x; }
int ScalarWithExceptions::instances = 0;
int ScalarWithExceptions::countdown = 0;
#define CHECK_MEMLEAK(OP) { \
ScalarWithExceptions::countdown = 100; \
int before = ScalarWithExceptions::instances; \
bool exception_thrown = false; \
try { OP; } \
catch (my_exception) { \
exception_thrown = true; \
VERIFY(ScalarWithExceptions::instances==before && "memory leak detected in " && EIGEN_MAKESTRING(OP)); \
} \
VERIFY(exception_thrown && " no exception thrown in " && EIGEN_MAKESTRING(OP)); \
}
void memoryleak()
{
typedef Eigen::Matrix<ScalarWithExceptions,Dynamic,1> VectorType;
typedef Eigen::Matrix<ScalarWithExceptions,Dynamic,Dynamic> MatrixType;
{
int n = 50;
VectorType v0(n), v1(n);
MatrixType m0(n,n), m1(n,n), m2(n,n);
v0.setOnes(); v1.setOnes();
m0.setOnes(); m1.setOnes(); m2.setOnes();
CHECK_MEMLEAK(v0 = m0 * m1 * v1);
CHECK_MEMLEAK(m2 = m0 * m1 * m2);
CHECK_MEMLEAK((v0+v1).dot(v0+v1));
}
VERIFY(ScalarWithExceptions::instances==0 && "global memory leak detected in " && EIGEN_MAKESTRING(OP)); \
}
void test_exceptions()
{
CALL_SUBTEST( memoryleak() );
}
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