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kernel32: Don't use depth in RtlInterlockedFlushSList. 

Depth wraps around at 65536 but list supports more elements.
This commit is contained in:
Daniel Lehman 2013-10-22 22:47:26 -07:00 committed by Alexandre Julliard
parent 35f0cf26b0
commit 0669a8aca2
2 changed files with 19 additions and 3 deletions
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18
dlls/kernel32/tests/sync.c
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@ -244,8 +244,9 @@ static void test_slist(void)
} item1, item2, item3, *pitem;
SLIST_HEADER slist_header;
PSLIST_ENTRY entry;
PSLIST_ENTRY entry, next;
USHORT size;
int i;
VOID (WINAPI *pInitializeSListHead)(PSLIST_HEADER);
USHORT (WINAPI *pQueryDepthSList)(PSLIST_HEADER);
@ -323,6 +324,21 @@ static void test_slist(void)
}
ok(((struct item*)entry)->value == 2, "item 2 not in front of list\n");
ok(((struct item*)entry->Next)->value == 1, "item 1 not at the back of list\n");
for (i = 0; i < 65536; i++)
{
entry = HeapAlloc(GetProcessHeap(), 0, sizeof(*entry));
pInterlockedPushEntrySList(&slist_header, entry);
}
entry = pInterlockedFlushSList(&slist_header);
ok(entry != NULL, "not flushed\n");
while (entry)
{
next = entry->Next;
HeapFree(GetProcessHeap(), 0, entry);
entry = next;
}
}
static void test_event(void)

4
dlls/ntdll/rtl.c
View File

@ -1080,7 +1080,7 @@ PSLIST_ENTRY WINAPI RtlInterlockedFlushSList(PSLIST_HEADER list)
SLIST_HEADER old, new;
#ifdef _WIN64
if (!list->Header16.Depth) return NULL;
if (!list->Header16.NextEntry) return NULL;
new.s.Alignment = new.s.Region = 0;
new.Header16.HeaderType = 1; /* we use the 16-byte header */
do
@ -1090,7 +1090,7 @@ PSLIST_ENTRY WINAPI RtlInterlockedFlushSList(PSLIST_HEADER list)
} while (!interlocked_cmpxchg128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
#else
if (!list->s.Depth) return NULL;
if (!list->s.Next.Next) return NULL;
new.Alignment = 0;
do
{