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ntdll: Don't use PEB lock for FLS data.

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Signed-off-by: Paul Gofman <pgofman@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Paul Gofman 2020-10-06 13:04:50 +03:00 committed by Alexandre Julliard
parent 87ea7698ab
commit 4039c5ad47
2 changed files with 44 additions and 5 deletions
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36
dlls/kernel32/tests/fiber.c
View file

@ -37,6 +37,8 @@ static DWORD (WINAPI *pFlsAlloc)(PFLS_CALLBACK_FUNCTION);
static BOOL (WINAPI *pFlsFree)(DWORD);
static PVOID (WINAPI *pFlsGetValue)(DWORD);
static BOOL (WINAPI *pFlsSetValue)(DWORD,PVOID);
static void (WINAPI *pRtlAcquirePebLock)(void);
static void (WINAPI *pRtlReleasePebLock)(void);
static NTSTATUS (WINAPI *pRtlFlsAlloc)(PFLS_CALLBACK_FUNCTION,DWORD*);
static NTSTATUS (WINAPI *pRtlFlsFree)(ULONG);
static NTSTATUS (WINAPI *pRtlFlsSetValue)(ULONG,void *);
@ -76,6 +78,8 @@ static VOID init_funcs(void)
X(RtlFlsSetValue);
X(RtlFlsGetValue);
X(RtlProcessFlsData);
X(RtlAcquirePebLock);
X(RtlReleasePebLock);
#undef X
}
@ -239,6 +243,19 @@ static unsigned int test_fls_chunk_index_from_index(unsigned int index, unsigned
return chunk_index;
}
static HANDLE test_fiberlocalstorage_peb_locked_event;
static HANDLE test_fiberlocalstorage_done_event;
static DWORD WINAPI test_FiberLocalStorage_thread(void *arg)
{
pRtlAcquirePebLock();
SetEvent(test_fiberlocalstorage_peb_locked_event);
WaitForSingleObject(test_fiberlocalstorage_done_event, INFINITE);
pRtlReleasePebLock();
return 0;
}
static void test_FiberLocalStorage(void)
{
static DWORD fls_indices[FLS_TEST_INDEX_COUNT];
@ -246,10 +263,11 @@ static void test_FiberLocalStorage(void)
LIST_ENTRY *fls_list_head, saved_entry;
TEB_FLS_DATA *fls_data, *new_fls_data;
GLOBAL_FLS_DATA *g_fls_data;
DWORD fls, fls_2, result;
TEB *teb = NtCurrentTeb();
PEB *peb = teb->Peb;
DWORD fls, fls_2;
NTSTATUS status;
HANDLE hthread;
SIZE_T size;
void* val;
BOOL ret;
@ -424,17 +442,29 @@ static void test_FiberLocalStorage(void)
HeapSize(GetProcessHeap(), 0, new_fls_data);
}
saved_entry = new_fls_data->fls_list_entry;
test_fiberlocalstorage_peb_locked_event = CreateEventA(NULL, FALSE, FALSE, NULL);
test_fiberlocalstorage_done_event = CreateEventA(NULL, FALSE, FALSE, NULL);
hthread = CreateThread(NULL, 0, test_FiberLocalStorage_thread, NULL, 0, NULL);
ok(!!hthread, "CreateThread failed.\n");
result = WaitForSingleObject(test_fiberlocalstorage_peb_locked_event, INFINITE);
ok(result == WAIT_OBJECT_0, "Got unexpected result %u.\n", result);
teb->FlsSlots = NULL;
saved_entry = new_fls_data->fls_list_entry;
pRtlProcessFlsData(new_fls_data, 1);
ok(!teb->FlsSlots, "Got unexpected teb->FlsSlots %p.\n", teb->FlsSlots);
teb->FlsSlots = fls_data;
SetEvent(test_fiberlocalstorage_done_event);
WaitForSingleObject(hthread, INFINITE);
CloseHandle(hthread);
CloseHandle(test_fiberlocalstorage_peb_locked_event);
CloseHandle(test_fiberlocalstorage_done_event);
ok(new_fls_data->fls_list_entry.Flink == saved_entry.Flink, "Got unexpected Flink %p.\n",
saved_entry.Flink);
ok(new_fls_data->fls_list_entry.Blink == saved_entry.Blink, "Got unexpected Flink %p.\n",
saved_entry.Blink);
size = HeapSize(GetProcessHeap(), 0, new_fls_data);
ok(size == sizeof(*new_fls_data), "Got unexpected size %p.\n", (void *)size);
pRtlProcessFlsData(new_fls_data, 2);

13
dlls/ntdll/thread.c
View file

@ -256,6 +256,15 @@ TEB_ACTIVE_FRAME * WINAPI RtlGetFrame(void)
static GLOBAL_FLS_DATA fls_data;
static RTL_CRITICAL_SECTION fls_section;
static RTL_CRITICAL_SECTION_DEBUG fls_critsect_debug =
{
0, 0, &fls_section,
{ &fls_critsect_debug.ProcessLocksList, &fls_critsect_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": fls_section") }
};
static RTL_CRITICAL_SECTION fls_section = { &fls_critsect_debug, -1, 0, 0, 0, 0 };
#define MAX_FLS_DATA_COUNT 0xff0
void init_global_fls_data(void)
@ -265,12 +274,12 @@ void init_global_fls_data(void)
static void lock_fls_data(void)
{
RtlAcquirePebLock();
RtlEnterCriticalSection( &fls_section );
}
static void unlock_fls_data(void)
{
RtlReleasePebLock();
RtlLeaveCriticalSection( &fls_section );
}
static unsigned int fls_chunk_size( unsigned int chunk_index )