/*
* Copyright (c) 1994 by Xerox Corporation. All rights reserved.
*
* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
* OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
*
* Permission is hereby granted to use or copy this program
* for any purpose, provided the above notices are retained on all copies.
* Permission to modify the code and to distribute modified code is granted,
* provided the above notices are retained, and a notice that the code was
* modified is included with the above copyright notice.
*/
/****************************************************************************
usage: test_cpp number-of-iterations
This program tries to test the specific C++ functionality provided by
gc_cpp.h that isn't tested by the more general test routines of the
collector.
A recommended value for number-of-iterations is 10, which will take a
few minutes to complete.
***************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#undef GC_BUILD
#define GC_DONT_INCL_WINDOWS_H
#include "gc_cpp.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "gc_allocator.h"
# include "private/gcconfig.h"
# ifndef GC_API_PRIV
# define GC_API_PRIV GC_API
# endif
extern "C" {
GC_API_PRIV void GC_printf(const char * format, ...);
/* Use GC private output to reach the same log file. */
/* Don't include gc_priv.h, since that may include Windows system */
/* header files that don't take kindly to this context. */
}
#ifdef MSWIN32
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN 1
# endif
# define NOSERVICE
# include <windows.h>
#endif
#ifdef GC_NAME_CONFLICT
# define USE_GC GC_NS_QUALIFY(UseGC)
struct foo * GC;
#else
# define USE_GC GC_NS_QUALIFY(GC)
#endif
#define my_assert( e ) \
if (! (e)) { \
GC_printf( "Assertion failure in " __FILE__ ", line %d: " #e "\n", \
__LINE__ ); \
exit( 1 ); }
#if defined(__powerpc64__) && !defined(__clang__) && GC_GNUC_PREREQ(10, 0)
/* Suppress "layout of aggregates ... has changed" GCC note. */
# define A_I_TYPE short
#else
# define A_I_TYPE int
#endif
class A {public:
/* An uncollectible class. */
GC_ATTR_EXPLICIT A( int iArg ): i((A_I_TYPE)iArg) {}
void Test( int iArg ) {
my_assert( i == iArg );}
virtual ~A() {}
A_I_TYPE i; };
class B: public GC_NS_QUALIFY(gc), public A { public:
/* A collectible class. */
GC_ATTR_EXPLICIT B( int j ): A( j ) {}
virtual ~B() {
my_assert( deleting );}
static void Deleting( int on ) {
deleting = on;}
static int deleting;};
int B::deleting = 0;
#define C_INIT_LEFT_RIGHT(arg_l, arg_r) \
{ \
C *l = new C(arg_l); \
C *r = new C(arg_r); \
left = l; \
right = r; \
if (GC_is_heap_ptr(this)) { \
GC_END_STUBBORN_CHANGE(this); \
GC_reachable_here(l); \
GC_reachable_here(r); \
} \
}
class C: public GC_NS_QUALIFY(gc_cleanup), public A { public:
/* A collectible class with cleanup and virtual multiple inheritance. */
// The class uses dynamic memory/resource allocation, so provide both
// a copy constructor and an assignment operator to workaround a cppcheck
// warning.
C(const C& c) : A(c.i), level(c.level), left(0), right(0) {
if (level > 0)
C_INIT_LEFT_RIGHT(*c.left, *c.right);
}
C& operator=(const C& c) {
if (this != &c) {
delete left;
delete right;
i = c.i;
level = c.level;
left = 0;
right = 0;
if (level > 0)
C_INIT_LEFT_RIGHT(*c.left, *c.right);
}
return *this;
}
GC_ATTR_EXPLICIT C( int levelArg ): A( levelArg ), level( levelArg ) {
nAllocated++;
if (level > 0) {
C_INIT_LEFT_RIGHT(level - 1, level - 1);
} else {
left = right = 0;}}
~C() {
this->A::Test( level );
nFreed++;
my_assert( level == 0 ?
left == 0 && right == 0 :
level == left->level + 1 && level == right->level + 1 );
left = right = 0;
level = -123456;}
static void Test() {
if (GC_is_incremental_mode() && nFreed < (nAllocated / 5) * 4) {
// An explicit GC might be needed to reach the expected number
// of the finalized objects.
GC_gcollect();
}
my_assert(nFreed <= nAllocated);
# ifndef GC_NO_FINALIZATION
my_assert(nFreed >= (nAllocated / 5) * 4 || GC_get_find_leak());
# endif
}
static int nFreed;
static int nAllocated;
int level;
C* left;
C* right;};
int C::nFreed = 0;
int C::nAllocated = 0;
class D: public GC_NS_QUALIFY(gc) { public:
/* A collectible class with a static member function to be used as
an explicit clean-up function supplied to ::new. */
GC_ATTR_EXPLICIT D( int iArg ): i( iArg ) {
nAllocated++;}
static void CleanUp( void* obj, void* data ) {
D* self = static_cast<D*>(obj);
nFreed++;
my_assert( (GC_word)self->i == (GC_word)data );}
static void Test() {
# ifndef GC_NO_FINALIZATION
my_assert(nFreed >= (nAllocated / 5) * 4 || GC_get_find_leak());
# endif
}
int i;
static int nFreed;
static int nAllocated;};
int D::nFreed = 0;
int D::nAllocated = 0;
class E: public GC_NS_QUALIFY(gc_cleanup) { public:
/* A collectible class with clean-up for use by F. */
E() {
nAllocated++;}
~E() {
nFreed++;}
static int nFreed;
static int nAllocated;};
int E::nFreed = 0;
int E::nAllocated = 0;
class F: public E {public:
/* A collectible class with clean-up, a base with clean-up, and a
member with clean-up. */
F() {
nAllocatedF++;
}
~F() {
nFreedF++;
}
static void Test() {
# ifndef GC_NO_FINALIZATION
my_assert(nFreedF >= (nAllocatedF / 5) * 4 || GC_get_find_leak());
# endif
my_assert(2 * nFreedF == nFreed);
}
E e;
static int nFreedF;
static int nAllocatedF;
};
int F::nFreedF = 0;
int F::nAllocatedF = 0;
GC_word Disguise( void* p ) {
return ~ (GC_word) p;}
void* Undisguise( GC_word i ) {
return (void*) ~ i;}
#define GC_CHECKED_DELETE(p) \
{ \
size_t freed_before = GC_get_expl_freed_bytes_since_gc(); \
delete p; /* the operator should invoke GC_FREE() */ \
size_t freed_after = GC_get_expl_freed_bytes_since_gc(); \
my_assert(freed_before != freed_after); \
}
#if ((defined(MSWIN32) && !defined(__MINGW32__)) || defined(MSWINCE)) \
&& !defined(NO_WINMAIN_ENTRY)
int APIENTRY WinMain( HINSTANCE /* instance */, HINSTANCE /* prev */,
LPSTR cmd, int /* cmdShow */)
{
int argc = 0;
char* argv[ 3 ];
# if defined(CPPCHECK)
GC_noop1((GC_word)&WinMain);
# endif
if (cmd != 0)
for (argc = 1; argc < (int)(sizeof(argv) / sizeof(argv[0])); argc++) {
// Parse the command-line string. Non-reentrant strtok() is not used
// to avoid complains of static analysis tools. (And, strtok_r() is
// not available on some platforms.) The code is equivalent to:
// if (!(argv[argc] = strtok(argc == 1 ? cmd : 0, " \t"))) break;
if (NULL == cmd) {
argv[argc] = NULL;
break;
}
for (; *cmd != '\0'; cmd++) {
if (*cmd != ' ' && *cmd != '\t')
break;
}
if ('\0' == *cmd) {
argv[argc] = NULL;
break;
}
argv[argc] = cmd;
while (*(++cmd) != '\0') {
if (*cmd == ' ' || *cmd == '\t')
break;
}
if (*cmd != '\0') {
*(cmd++) = '\0';
} else {
cmd = NULL;
}
}
#elif defined(MACOS)
int main() {
char* argv_[] = {"test_cpp", "10"}; // MacOS doesn't have a command line
argv = argv_;
argc = sizeof(argv_)/sizeof(argv_[0]);
#else
int main( int argc, char* argv[] ) {
#endif
GC_set_all_interior_pointers(1);
/* needed due to C++ multiple inheritance used */
# ifdef TEST_MANUAL_VDB
GC_set_manual_vdb_allowed(1);
# endif
GC_INIT();
# ifndef NO_INCREMENTAL
GC_enable_incremental();
# endif
if (GC_get_find_leak())
GC_printf("This test program is not designed for leak detection mode\n");
int i, iters, n;
int *x = gc_allocator<int>().allocate(1);
int *xio;
xio = gc_allocator_ignore_off_page<int>().allocate(1);
GC_reachable_here(xio);
int **xptr = traceable_allocator<int *>().allocate(1);
*x = 29;
if (!xptr) {
fprintf(stderr, "Out of memory!\n");
exit(3);
}
GC_PTR_STORE_AND_DIRTY(xptr, x);
x = 0;
if (argc != 2
|| (n = (int)COVERT_DATAFLOW(atoi(argv[1]))) <= 0) {
GC_printf("usage: test_cpp number-of-iterations\n"
"Assuming 10 iters\n");
n = 10;
}
for (iters = 1; iters <= n; iters++) {
GC_printf( "Starting iteration %d\n", iters );
/* Allocate some uncollectible As and disguise their pointers.
Later we'll check to see if the objects are still there. We're
checking to make sure these objects really are uncollectible. */
GC_word as[ 1000 ];
GC_word bs[ 1000 ];
for (i = 0; i < 1000; i++) {
as[ i ] = Disguise( new (GC_NS_QUALIFY(NoGC)) A(i) );
bs[ i ] = Disguise( new (GC_NS_QUALIFY(NoGC)) B(i) ); }
/* Allocate a fair number of finalizable Cs, Ds, and Fs.
Later we'll check to make sure they've gone away. */
for (i = 0; i < 1000; i++) {
C* c = new C( 2 );
C c1( 2 ); /* stack allocation should work too */
D* d;
F* f;
d = ::new (USE_GC, D::CleanUp, (void*)(GC_word)i) D( i );
GC_reachable_here(d);
f = new F;
F** fa = new F*[1];
fa[0] = f;
(void)fa;
delete[] fa;
if (0 == i % 10)
GC_CHECKED_DELETE(c);
}
/* Allocate a very large number of collectible As and Bs and
drop the references to them immediately, forcing many
collections. */
for (i = 0; i < 1000000; i++) {
A* a;
a = new (USE_GC) A( i );
GC_reachable_here(a);
B* b;
b = new B( i );
(void)b;
b = new (USE_GC) B( i );
if (0 == i % 10) {
B::Deleting( 1 );
GC_CHECKED_DELETE(b);
B::Deleting( 0 );}
# if defined(FINALIZE_ON_DEMAND) && !defined(GC_NO_FINALIZATION)
GC_invoke_finalizers();
# endif
}
/* Make sure the uncollectible As and Bs are still there. */
for (i = 0; i < 1000; i++) {
A* a = static_cast<A*>(Undisguise(as[i]));
B* b = static_cast<B*>(Undisguise(bs[i]));
a->Test( i );
# if defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER)
// Workaround for ASan/MSan: the linker uses operator delete
// implementation from libclang_rt instead of gc_cpp (thus
// causing incompatible alloc/free).
GC_FREE(a);
# else
GC_CHECKED_DELETE(a);
# endif
b->Test( i );
B::Deleting( 1 );
GC_CHECKED_DELETE(b);
B::Deleting( 0 );
# if defined(FINALIZE_ON_DEMAND) && !defined(GC_NO_FINALIZATION)
GC_invoke_finalizers();
# endif
}
/* Make sure most of the finalizable Cs, Ds, and Fs have
gone away. */
C::Test();
D::Test();
F::Test();}
x = *xptr;
my_assert (29 == x[0]);
GC_printf( "The test appears to have succeeded.\n" );
return( 0 );
}
¤ Dauer der Verarbeitung: 0.1 Sekunden
(vorverarbeitet am 2026-11-04)
¤
*© Formatika GbR, Deutschland