287 lines
7.6 KiB
C++
287 lines
7.6 KiB
C++
/****************************************************************************
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Copyright (c) 1994 by Xerox Corporation. All rights reserved.
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THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
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OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
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Permission is hereby granted to use or copy this program for any
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purpose, provided the above notices are retained on all copies.
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Permission to modify the code and to distribute modified code is
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granted, provided the above notices are retained, and a notice that
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the code was modified is included with the above copyright notice.
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****************************************************************************
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Last modified on Mon Jul 10 21:06:03 PDT 1995 by ellis
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modified on December 20, 1994 7:27 pm PST by boehm
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usage: test_cpp number-of-iterations
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This program tries to test the specific C++ functionality provided by
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gc_c++.h that isn't tested by the more general test routines of the
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collector.
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A recommended value for number-of-iterations is 10, which will take a
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few minutes to complete.
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***************************************************************************/
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#include "gc_cpp.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define USE_STD_ALLOCATOR
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#ifdef USE_STD_ALLOCATOR
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# include "gc_allocator.h"
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#elif __GNUC__
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# include "new_gc_alloc.h"
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#else
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# include "gc_alloc.h"
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#endif
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extern "C" {
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#include "private/gc_priv.h"
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}
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#ifdef MSWIN32
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# include <windows.h>
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#endif
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#ifdef GC_NAME_CONFLICT
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# define USE_GC UseGC
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struct foo * GC;
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#else
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# define USE_GC GC
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#endif
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#define my_assert( e ) \
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if (! (e)) { \
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GC_printf1( "Assertion failure in " __FILE__ ", line %d: " #e "\n", \
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__LINE__ ); \
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exit( 1 ); }
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class A {public:
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/* An uncollectable class. */
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A( int iArg ): i( iArg ) {}
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void Test( int iArg ) {
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my_assert( i == iArg );}
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int i;};
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class B: public gc, public A {public:
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/* A collectable class. */
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B( int j ): A( j ) {}
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~B() {
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my_assert( deleting );}
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static void Deleting( int on ) {
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deleting = on;}
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static int deleting;};
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int B::deleting = 0;
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class C: public gc_cleanup, public A {public:
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/* A collectable class with cleanup and virtual multiple inheritance. */
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C( int levelArg ): A( levelArg ), level( levelArg ) {
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nAllocated++;
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if (level > 0) {
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left = new C( level - 1 );
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right = new C( level - 1 );}
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else {
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left = right = 0;}}
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~C() {
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this->A::Test( level );
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nFreed++;
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my_assert( level == 0 ?
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left == 0 && right == 0 :
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level == left->level + 1 && level == right->level + 1 );
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left = right = 0;
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level = -123456;}
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static void Test() {
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my_assert( nFreed <= nAllocated && nFreed >= .8 * nAllocated );}
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static int nFreed;
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static int nAllocated;
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int level;
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C* left;
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C* right;};
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int C::nFreed = 0;
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int C::nAllocated = 0;
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class D: public gc {public:
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/* A collectable class with a static member function to be used as
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an explicit clean-up function supplied to ::new. */
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D( int iArg ): i( iArg ) {
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nAllocated++;}
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static void CleanUp( void* obj, void* data ) {
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D* self = (D*) obj;
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nFreed++;
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my_assert( self->i == (int) (long) data );}
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static void Test() {
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my_assert( nFreed >= .8 * nAllocated );}
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int i;
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static int nFreed;
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static int nAllocated;};
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int D::nFreed = 0;
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int D::nAllocated = 0;
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class E: public gc_cleanup {public:
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/* A collectable class with clean-up for use by F. */
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E() {
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nAllocated++;}
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~E() {
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nFreed++;}
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static int nFreed;
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static int nAllocated;};
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int E::nFreed = 0;
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int E::nAllocated = 0;
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class F: public E {public:
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/* A collectable class with clean-up, a base with clean-up, and a
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member with clean-up. */
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F() {
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nAllocated++;}
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~F() {
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nFreed++;}
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static void Test() {
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my_assert( nFreed >= .8 * nAllocated );
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my_assert( 2 * nFreed == E::nFreed );}
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E e;
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static int nFreed;
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static int nAllocated;};
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int F::nFreed = 0;
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int F::nAllocated = 0;
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long Disguise( void* p ) {
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return ~ (long) p;}
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void* Undisguise( long i ) {
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return (void*) ~ i;}
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#ifdef MSWIN32
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int APIENTRY WinMain(
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HINSTANCE instance, HINSTANCE prev, LPSTR cmd, int cmdShow )
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{
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int argc;
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char* argv[ 3 ];
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for (argc = 1; argc < sizeof( argv ) / sizeof( argv[ 0 ] ); argc++) {
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argv[ argc ] = strtok( argc == 1 ? cmd : 0, " \t" );
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if (0 == argv[ argc ]) break;}
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#else
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# ifdef MACOS
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int main() {
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# else
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int main( int argc, char* argv[] ) {
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# endif
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#endif
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# if defined(MACOS) // MacOS
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char* argv_[] = {"test_cpp", "10"}; // doesn't
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argv = argv_; // have a
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argc = sizeof(argv_)/sizeof(argv_[0]); // commandline
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# endif
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int i, iters, n;
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# ifdef USE_STD_ALLOCATOR
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int *x = gc_allocator<int>().allocate(1);
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int **xptr = traceable_allocator<int *>().allocate(1);
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# else
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# ifdef __GNUC__
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int *x = (int *)gc_alloc::allocate(sizeof(int));
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# else
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int *x = (int *)alloc::allocate(sizeof(int));
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# endif
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# endif
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*x = 29;
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# ifdef USE_STD_ALLOCATOR
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*xptr = x;
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x = 0;
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# endif
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if (argc != 2 || (0 >= (n = atoi( argv[ 1 ] )))) {
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GC_printf0( "usage: test_cpp number-of-iterations\n" );
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exit( 1 );}
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for (iters = 1; iters <= n; iters++) {
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GC_printf1( "Starting iteration %d\n", iters );
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/* Allocate some uncollectable As and disguise their pointers.
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Later we'll check to see if the objects are still there. We're
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checking to make sure these objects really are uncollectable. */
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long as[ 1000 ];
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long bs[ 1000 ];
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for (i = 0; i < 1000; i++) {
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as[ i ] = Disguise( new (NoGC) A( i ) );
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bs[ i ] = Disguise( new (NoGC) B( i ) );}
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/* Allocate a fair number of finalizable Cs, Ds, and Fs.
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Later we'll check to make sure they've gone away. */
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for (i = 0; i < 1000; i++) {
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C* c = new C( 2 );
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C c1( 2 ); /* stack allocation should work too */
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D* d = ::new (USE_GC, D::CleanUp, (void*)(long)i) D( i );
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F* f = new F;
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if (0 == i % 10) delete c;}
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/* Allocate a very large number of collectable As and Bs and
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drop the references to them immediately, forcing many
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collections. */
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for (i = 0; i < 1000000; i++) {
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A* a = new (USE_GC) A( i );
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B* b = new B( i );
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b = new (USE_GC) B( i );
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if (0 == i % 10) {
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B::Deleting( 1 );
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delete b;
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B::Deleting( 0 );}
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# ifdef FINALIZE_ON_DEMAND
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GC_invoke_finalizers();
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# endif
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}
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/* Make sure the uncollectable As and Bs are still there. */
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for (i = 0; i < 1000; i++) {
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A* a = (A*) Undisguise( as[ i ] );
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B* b = (B*) Undisguise( bs[ i ] );
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a->Test( i );
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delete a;
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b->Test( i );
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B::Deleting( 1 );
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delete b;
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B::Deleting( 0 );
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# ifdef FINALIZE_ON_DEMAND
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GC_invoke_finalizers();
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# endif
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}
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/* Make sure most of the finalizable Cs, Ds, and Fs have
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gone away. */
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C::Test();
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D::Test();
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F::Test();}
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# ifdef USE_STD_ALLOCATOR
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x = *xptr;
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# endif
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my_assert (29 == x[0]);
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GC_printf0( "The test appears to have succeeded.\n" );
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return( 0 );}
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