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Locks the virtual views linked list.

This commit is contained in:
Gerard Patel 2000-09-24 19:47:39 +00:00 committed by Alexandre Julliard
parent ff7a61f8d3
commit 2a6acd3d70
1 changed files with 25 additions and 6 deletions
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31
memory/virtual.c
View File

@ -78,6 +78,7 @@ static const BYTE VIRTUAL_Win32Flags[16] =
static FILE_VIEW *VIRTUAL_FirstView; static FILE_VIEW *VIRTUAL_FirstView;
static CRITICAL_SECTION csVirtual = CRITICAL_SECTION_INIT;
#ifdef __i386__ #ifdef __i386__
/* These are always the same on an i386, and it will be faster this way */ /* These are always the same on an i386, and it will be faster this way */
@ -163,13 +164,16 @@ static void VIRTUAL_DumpView( FILE_VIEW *view )
*/ */
void VIRTUAL_Dump(void) void VIRTUAL_Dump(void)
{ {
FILE_VIEW *view = VIRTUAL_FirstView; FILE_VIEW *view;
DPRINTF( "\nDump of all virtual memory views:\n\n" ); DPRINTF( "\nDump of all virtual memory views:\n\n" );
EnterCriticalSection(&csVirtual);
view = VIRTUAL_FirstView;
while (view) while (view)
{ {
VIRTUAL_DumpView( view ); VIRTUAL_DumpView( view );
view = view->next; view = view->next;
} }
LeaveCriticalSection(&csVirtual);
} }
@ -185,14 +189,22 @@ void VIRTUAL_Dump(void)
static FILE_VIEW *VIRTUAL_FindView( static FILE_VIEW *VIRTUAL_FindView(
UINT addr /* [in] Address */ UINT addr /* [in] Address */
) { ) {
FILE_VIEW *view = VIRTUAL_FirstView; FILE_VIEW *view;
EnterCriticalSection(&csVirtual);
view = VIRTUAL_FirstView;
while (view) while (view)
{ {
if (view->base > addr) return NULL; if (view->base > addr)
if (view->base + view->size > addr) return view; {
view = NULL;
break;
}
if (view->base + view->size > addr) break;
view = view->next; view = view->next;
} }
return NULL; LeaveCriticalSection(&csVirtual);
return view;
} }
@ -233,6 +245,7 @@ static FILE_VIEW *VIRTUAL_CreateView( UINT base, UINT size, UINT flags,
/* Insert it in the linked list */ /* Insert it in the linked list */
EnterCriticalSection(&csVirtual);
if (!VIRTUAL_FirstView || (VIRTUAL_FirstView->base > base)) if (!VIRTUAL_FirstView || (VIRTUAL_FirstView->base > base))
{ {
view->next = VIRTUAL_FirstView; view->next = VIRTUAL_FirstView;
@ -249,6 +262,7 @@ static FILE_VIEW *VIRTUAL_CreateView( UINT base, UINT size, UINT flags,
if (view->next) view->next->prev = view; if (view->next) view->next->prev = view;
prev->next = view; prev->next = view;
} }
LeaveCriticalSection(&csVirtual);
VIRTUAL_DEBUG_DUMP_VIEW( view ); VIRTUAL_DEBUG_DUMP_VIEW( view );
return view; return view;
} }
@ -266,9 +280,11 @@ static void VIRTUAL_DeleteView(
) { ) {
if (!(view->flags & VFLAG_SYSTEM)) if (!(view->flags & VFLAG_SYSTEM))
munmap( (void *)view->base, view->size ); munmap( (void *)view->base, view->size );
EnterCriticalSection(&csVirtual);
if (view->next) view->next->prev = view->prev; if (view->next) view->next->prev = view->prev;
if (view->prev) view->prev->next = view->next; if (view->prev) view->prev->next = view->next;
else VIRTUAL_FirstView = view->next; else VIRTUAL_FirstView = view->next;
LeaveCriticalSection(&csVirtual);
if (view->mapping) CloseHandle( view->mapping ); if (view->mapping) CloseHandle( view->mapping );
free( view ); free( view );
} }
@ -1055,13 +1071,15 @@ DWORD WINAPI VirtualQuery(
LPMEMORY_BASIC_INFORMATION info, /* [out] Address of info buffer */ LPMEMORY_BASIC_INFORMATION info, /* [out] Address of info buffer */
DWORD len /* [in] Size of buffer */ DWORD len /* [in] Size of buffer */
) { ) {
FILE_VIEW *view = VIRTUAL_FirstView; FILE_VIEW *view;
UINT base = ROUND_ADDR( addr ); UINT base = ROUND_ADDR( addr );
UINT alloc_base = 0; UINT alloc_base = 0;
UINT size = 0; UINT size = 0;
/* Find the view containing the address */ /* Find the view containing the address */
EnterCriticalSection(&csVirtual);
view = VIRTUAL_FirstView;
for (;;) for (;;)
{ {
if (!view) if (!view)
@ -1084,6 +1102,7 @@ DWORD WINAPI VirtualQuery(
alloc_base = view->base + view->size; alloc_base = view->base + view->size;
view = view->next; view = view->next;
} }
LeaveCriticalSection(&csVirtual);
/* Fill the info structure */ /* Fill the info structure */