Memory allocation test
Geoffrey Hausheer
i134rth8d9s at phracturedblue.com
Tue Mar 26 08:00:03 CST 2002
Here is my memory allocation test. I didn't get much feedback as to whether
the coding style, etc. is okay, so I hope it's fine.
In wine it returns:
alloc.c: 54 tests executed, 1 marked as todo, 0 failures.
The todo has to do with wine allocating more memory than dwMaximumSize
allows.
The test passes cleanly on win2k.
The alloc.c file obviously goes into dlls/kernel/tests
Thanks,
.Geoff
Index: dlls/kernel/Makefile.in
===================================================================
RCS file: /home/wine/wine/dlls/kernel/Makefile.in,v
retrieving revision 1.27
diff -u -r1.27 Makefile.in
--- dlls/kernel/Makefile.in 22 Mar 2002 01:00:17 -0000 1.27
+++ dlls/kernel/Makefile.in 26 Mar 2002 13:35:54 -0000
@@ -40,7 +40,8 @@
tests
CTESTS = \
- tests/directory.c
+ tests/directory.c \
+ tests/alloc.c
PLTESTS = \
tests/atom.pl
-------------------------------------------------------
-------------- next part --------------
/*
* Unit test suite for memory allocation functions.
*
* Copyright 2002 Geoffrey Hausheer
*/
#include "winbase.h"
#include "winerror.h"
#include "wine/test.h"
/* Currently Wine doesn't have macros for LocalDiscard and GlobalDiscard
so I am disableing the checks for them. These macros are equivalent
to reallocing '0' bytes, so we try that instead
*/
#define DISCARD_DEFINED 0
/* The following functions don't have tests, because either I don't know how
to test them, or they are WinNT only, or require multiple threads.
Since the last two issues shouldn't really stop the tests from being
written, assume for now that it is all due to the first case
HeapCompact
HeapLock
HeapQueryInformation
HeapSetInformation
HeapUnlock
HeapValidate
HeapWalk
*/
/* In addition, these features aren't being tested
HEAP_NO_SERIALIZE
HEAP_GENERATE_EXCEPTIONS
STATUS_ACCESS_VIOLATION (error code from HeapAlloc)
*/
static void test_Heap(void)
{
SYSTEM_INFO sysInfo;
ULONG memchunk;
HANDLE heap;
LPVOID mem1,mem1a,mem3;
UCHAR *mem2,*mem2a;
UINT error,i;
/* Retreive the page size for this system */
sysInfo.dwPageSize=0;
GetSystemInfo(&sysInfo);
ok(sysInfo.dwPageSize>0,"GetSystemInfo should return a valid page size");
/* Create a Heap with a minimum and maximum size */
/* Note that Windows and Wine seem to behave a bit differently with respect
to memory allocation. In Windows, you can't access all the memory
specified in the heap (due to overhead), so choosing a reasonable maximum
size for the heap was done mostly by trial-and-error on Win2k. It may need
more tweaking for otherWindows variants.
*/
memchunk=10*sysInfo.dwPageSize;
heap=HeapCreate((DWORD)NULL,2*memchunk,5*memchunk);
/* Check that HeapCreate allocated the right amount of ram */
todo_wine {
/* Today HeapCreate seems to return a memory block larger than specified.
MSDN says the maximum heap size should be dwMaximumSize rounded up to the
nearest page boundary
*/
mem1=HeapAlloc(heap,(DWORD)NULL,5*memchunk+1);
ok(mem1==NULL,"HeapCreate allocated more Ram than it should have");
if(mem1) {
HeapFree(heap,(DWORD)NULL,mem1);
}
}
/* Check that a normal alloc works */
mem1=HeapAlloc(heap,(DWORD)NULL,memchunk);
ok(mem1!=NULL,"HeapAlloc failed");
if(mem1) {
ok(HeapSize(heap,(DWORD)NULL,mem1)>=memchunk, "HeapAlloc should return a big enough memory block");
}
/* Check that a 'zeroing' alloc works */
mem2=(UCHAR *)HeapAlloc(heap,HEAP_ZERO_MEMORY,memchunk);
ok(mem2!=NULL,"HeapAlloc failed");
if(mem2) {
ok(HeapSize(heap,(DWORD)NULL,mem2)>=memchunk,"HeapAlloc should return a big enough memory block");
error=0;
for(i=0;i<memchunk;i++) {
if(mem2[i]!=0) {
error=1;
}
}
ok(!error,"HeapAlloc should have zeroed out it's allocated memory");
}
/* Check that HeapAlloc returns NULL when requested way too much memory */
mem3=HeapAlloc(heap,(DWORD)NULL,5*memchunk);
ok(mem3==NULL,"HeapAlloc should return NULL");
if(mem3) {
ok(HeapFree(heap,(DWORD)NULL,mem3),"HeapFree didn't pass successfully");
}
/* Check that HeapRealloc works */
mem2a=(UCHAR *)HeapReAlloc(heap,HEAP_ZERO_MEMORY,mem2,memchunk+5*sysInfo.dwPageSize);
ok(mem2a!=NULL,"HeapReAlloc failed");
if(mem2a) {
ok(HeapSize(heap,(DWORD)NULL,mem2a)>=memchunk+5*sysInfo.dwPageSize,"HeapReAlloc failed");
error=0;
for(i=0;i<5*sysInfo.dwPageSize;i++) {
if(mem2a[memchunk+i]!=0) {
error=1;
}
}
ok(!error,"HeapReAlloc should have zeroed out it's allocated memory");
}
/* Check that HeapRealloc honours HEAP_REALLOC_IN_PLACE_ONLY */
error=0;
mem1a=HeapReAlloc(heap,HEAP_REALLOC_IN_PLACE_ONLY,mem1,memchunk+sysInfo.dwPageSize);
if(mem1a!=NULL) {
if(mem1a!=mem1) {
error=1;
}
}
ok(mem1a==NULL || error==0,"HeapReAlloc didn't honour HEAP_REALLOC_IN_PLACE_ONLY");
/* Check that HeapFree works correctly */
if(mem1a) {
ok(HeapFree(heap,(DWORD)NULL,mem1a),"HeapFree failed");
} else {
ok(HeapFree(heap,(DWORD)NULL,mem1),"HeapFree failed");
}
if(mem2a) {
ok(HeapFree(heap,(DWORD)NULL,mem2a),"HeapFree failed");
} else {
ok(HeapFree(heap,(DWORD)NULL,mem2),"HeapFree failed");
}
/* Check that HeapDestry works */
ok(HeapDestroy(heap),"HeapDestroy failed");
}
/* The following functions don't have tests, because either I don't know how
to test them, or they are WinNT only, or require multiple threads.
Since the last two issues shouldn't really stop the tests from being
written, assume for now that it is all due to the first case
GlobalFlags
GlobalMemoryStatus
GlobalMemoryStatusEx
*/
/* In addition, these features aren't being tested
GMEM_DISCADABLE
GMEM_NOCOMPACT
*/
static void test_Global(void)
{
ULONG memchunk;
HGLOBAL mem1,mem2,mem2a,mem2b;
UCHAR *mem2ptr;
UINT error,i;
memchunk=100000;
SetLastError(NO_ERROR);
/* Check that a normal alloc works */
mem1=GlobalAlloc((UINT)NULL,memchunk);
ok(mem1!=(HGLOBAL)NULL,"GlobalAlloc failed");
if(mem1) {
ok(GlobalSize(mem1)>=memchunk, "GlobalAlloc should return a big enough memory block");
}
/* Check that a 'zeroing' alloc works */
mem2=GlobalAlloc(GMEM_ZEROINIT,memchunk);
ok(mem2!=(HGLOBAL)NULL,"GlobalAlloc failed");
if(mem2) {
ok(GlobalSize(mem2)>=memchunk,"GlobalAlloc should return a big enough memory block");
mem2ptr=(UCHAR *)GlobalLock(mem2);
ok(mem2ptr==(UCHAR *)mem2,"GlobalLock should have returned the same memory as was allocated");
if(mem2ptr) {
error=0;
for(i=0;i<memchunk;i++) {
if(mem2ptr[i]!=0) {
error=1;
}
}
ok(!error,"GlobalAlloc should have zeroed out it's allocated memory");
}
}
/* Check that GlobalReAlloc works */
/* Check that we can change GMEM_FIXED to GMEM_MOVEABLE */
mem2a=GlobalReAlloc(mem2,0,GMEM_MODIFY | GMEM_MOVEABLE);
ok(mem2a!=(HGLOBAL)NULL,"GlobalReAlloc failed to convert FIXED to MOVEABLE");
if(mem2a!=(HGLOBAL)NULL) {
mem2=mem2a;
}
mem2ptr=GlobalLock(mem2a);
ok(mem2ptr!=NULL && !GlobalUnlock(mem2a)&&GetLastError()==NO_ERROR,
"Converting from FIXED to MOVEABLE didn't REALLY work");
/* Check that ReAllocing memory works as expected */
mem2a=GlobalReAlloc(mem2,2*memchunk,GMEM_MOVEABLE | GMEM_ZEROINIT);
ok(mem2a!=(HGLOBAL)NULL,"GlobalReAlloc failed");
if(mem2a) {
ok(GlobalSize(mem2a)>=2*memchunk,"GlobalReAlloc failed");
mem2ptr=(UCHAR *)GlobalLock(mem2a);
ok(mem2ptr!=NULL,"GlobalLock Failed.");
if(mem2ptr) {
error=0;
for(i=0;i<memchunk;i++) {
if(mem2ptr[memchunk+i]!=0) {
error=1;
}
}
ok(!error,"GlobalReAlloc should have zeroed out it's allocated memory");
/* Check that GlobalHandle works */
mem2b=GlobalHandle(mem2ptr);
ok(mem2b==mem2a,"GlobalHandle didn't return the correct memory handle");
/* Check that we can't discard locked memory */
#if DISCARD_DEFINED
/* Wine doesn't include the GlobalDiscard function */
mem2b=GlobalDiscard(mem2a);
ok(mem2b==(HGLOBAL)NULL,"Discarded memory we shouldn't have");
#else
/* This is functionally equivalent to the above */
mem2b=GlobalReAlloc(mem2a,0,GMEM_MOVEABLE);
ok(mem2b==(HGLOBAL)NULL,"Discarded memory we shouldn't have");
#endif
ok(!GlobalUnlock(mem2a) && GetLastError()==NO_ERROR,"GlobalUnlock Failed.");
}
}
if(mem1) {
ok(GlobalFree(mem1)==(HGLOBAL)NULL,"GlobalFree failed");
}
if(mem2a) {
ok(GlobalFree(mem2a)==(HGLOBAL)NULL,"GlobalFree failed");
} else {
ok(GlobalFree(mem2)==(HGLOBAL)NULL,"GlobalFree failed");
}
}
/* The following functions don't have tests, because either I don't know how
to test them, or they are WinNT only, or require multiple threads.
Since the last two issues shouldn't really stop the tests from being
written, assume for now that it is all due to the first case
LocalDiscard
LocalFlags
*/
/* In addition, these features aren't being tested
LMEM_DISCADABLE
LMEM_NOCOMPACT
*/
static void test_Local(void)
{
ULONG memchunk;
HLOCAL mem1,mem2,mem2a,mem2b;
UCHAR *mem2ptr;
UINT error,i;
memchunk=100000;
/* Check that a normal alloc works */
mem1=LocalAlloc((UINT)NULL,memchunk);
ok(mem1!=(HLOCAL)NULL,"LocalAlloc failed");
if(mem1) {
ok(LocalSize(mem1)>=memchunk, "LocalAlloc should return a big enough memory block");
}
/* Check that a 'zeroing' alloc works */
mem2=LocalAlloc(LMEM_ZEROINIT,memchunk);
ok(mem2!=(HLOCAL)NULL,"LocalAlloc failed");
if(mem2) {
ok(LocalSize(mem2)>=memchunk,"LocalAlloc should return a big enough memory block");
mem2ptr=(UCHAR *)LocalLock(mem2);
ok(mem2ptr==(UCHAR *)mem2,"LocalLock Didn't lock it's memory");
if(mem2ptr) {
error=0;
for(i=0;i<memchunk;i++) {
if(mem2ptr[i]!=0) {
error=1;
}
}
ok(!error,"LocalAlloc should have zeroed out it's allocated memory");
ok(!(error=LocalUnlock(mem2)) &&
(GetLastError()==ERROR_NOT_LOCKED || GetLastError()==NO_ERROR),
"LocalUnlock Failed.");
}
}
/* Reallocate mem2 as moveable memory */
mem2a=LocalFree(mem2);
mem2=LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT,memchunk);
ok(mem2a==(HLOCAL)NULL && mem2!=(HLOCAL)NULL, "LocalAlloc failed to create moveable memory");
/* Check that ReAllocing memory works as expected */
mem2a=LocalReAlloc(mem2,2*memchunk,LMEM_MOVEABLE | LMEM_ZEROINIT);
ok(mem2a!=(HLOCAL)NULL,"LocalReAlloc failed");
if(mem2a) {
ok(LocalSize(mem2a)>=2*memchunk,"LocalReAlloc failed");
mem2ptr=(UCHAR *)LocalLock(mem2a);
ok(mem2ptr!=NULL,"LocalLock Failed.");
if(mem2ptr) {
error=0;
for(i=0;i<memchunk;i++) {
if(mem2ptr[memchunk+i]!=0) {
error=1;
}
}
ok(!error,"LocalReAlloc should have zeroed out it's allocated memory");
/* Check that LocalHandle works */
mem2b=LocalHandle(mem2ptr);
ok(mem2b==mem2a,"LocalHandle didn't return the correct memory handle");
/* Check that we can't discard locked memory */
#if DISCARD_DEFINED
/* Wine doesn't include the LocalDiscard function */
mem2b=LocalDiscard(mem2a);
ok(mem2b==(HLOCAL)NULL,"Discarded memory we shouldn't have");
#else
/* This is functionally equivalent to the above */
mem2b=LocalReAlloc(mem2a,0,GMEM_MOVEABLE);
ok(mem2b==(HLOCAL)NULL,"Discarded memory we shouldn't have");
#endif
SetLastError(NO_ERROR);
ok(!LocalUnlock(mem2a) && GetLastError()==NO_ERROR, "LocalUnlock Failed.");
}
}
if(mem1) {
ok(LocalFree(mem1)==(HLOCAL)NULL,"LocalFree failed");
}
if(mem2a) {
ok(LocalFree(mem2a)==(HLOCAL)NULL,"LocalFree failed");
} else {
ok(LocalFree(mem2)==(HLOCAL)NULL,"LocalFree failed");
}
}
/* The Virtual* routines are not tested as thoroughly,
since I don't really understand how to use them correctly :)
The following routines are not tested at all
VirtualAllocEx
VirtualFreeEx
VirtualLock
VirtualProtect
VirtualProtectEx
VirtualQuery
VirtualQueryEx
VirtualUnlock
And the only features (flags) being tested are
MEM_COMMIT
MEM_RELEASE
PAGE_READWRITE
Testing the rest requires using exceptions, which I really don't
understand well
*/
static void test_Virtual(void)
{
SYSTEM_INFO sysInfo;
ULONG memchunk;
UCHAR *mem1;
UINT error,i;
/* Retreive the page size for this system */
sysInfo.dwPageSize=0;
GetSystemInfo(&sysInfo);
ok(sysInfo.dwPageSize>0,"GetSystemInfo should return a valid page size");
/* Chhose a reasonable allocation size */
memchunk=10*sysInfo.dwPageSize;
/* Check that a normal alloc works */
mem1=VirtualAlloc(NULL,memchunk,MEM_COMMIT,PAGE_READWRITE);
ok(mem1!=NULL,"VirtualAlloc failed");
if(mem1) {
/* check that memory is initialized to 0 */
error=0;
for(i=0;i<memchunk;i++) {
if(mem1[i]!=0) {
error=1;
}
}
ok(!error,"VirtualAlloc did not initialize memory to '0's");
/* Check that we can read/write to memory */
error=0;
for(i=0;i<memchunk;i+=100) {
mem1[i]='a';
if(mem1[i]!='a') {
error=1;
}
}
ok(!error,"Virtual memory was not writable");
}
ok(VirtualFree(mem1,0,MEM_RELEASE),"VirtualFree failed");
}
START_TEST(alloc)
{
test_Heap();
test_Global();
test_Local();
test_Virtual();
}
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