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user32: Use a local buffer in peek_message to save a server call for small buffer sizes.

This commit is contained in:
Alexandre Julliard 2008-10-29 12:13:51 +01:00
parent 06dbbdd09b
commit 7804129e68
1 changed files with 46 additions and 49 deletions
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49
dlls/user32/message.c
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@ -2029,19 +2029,17 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
struct user_thread_info *thread_info = get_user_thread_info();
struct received_message_info info, *old_info;
unsigned int hw_id = 0; /* id of previous hardware message */
char local_buffer[256];
void *buffer = local_buffer;
size_t buffer_size = sizeof(local_buffer);
if (!first && !last) last = ~0;
for (;;)
{
NTSTATUS res;
void *buffer = NULL;
size_t size = 0, buffer_size = 0;
size_t size = 0;
do /* loop while buffer is too small */
{
if (buffer_size && !(buffer = HeapAlloc( GetProcessHeap(), 0, buffer_size )))
return FALSE;
SERVER_START_REQ( get_message )
{
req->flags = flags;
@ -2051,7 +2049,7 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
req->hw_id = hw_id;
req->wake_mask = changed_mask & (QS_SENDMESSAGE | QS_SMRESULT);
req->changed_mask = changed_mask;
if (buffer_size) wine_server_set_reply( req, buffer, buffer_size );
wine_server_set_reply( req, buffer, buffer_size );
if (!(res = wine_server_call( req )))
{
size = wine_server_reply_size( reply );
@ -2067,16 +2065,17 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
extra_info = reply->info;
thread_info->active_hooks = reply->active_hooks;
}
else
{
HeapFree( GetProcessHeap(), 0, buffer );
buffer_size = reply->total;
}
else buffer_size = reply->total;
}
SERVER_END_REQ;
} while (res == STATUS_BUFFER_OVERFLOW);
if (res) return FALSE;
if (res)
{
if (buffer != local_buffer) HeapFree( GetProcessHeap(), 0, buffer );
if (res != STATUS_BUFFER_OVERFLOW) return FALSE;
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, buffer_size ))) return FALSE;
continue;
}
TRACE( "got type %d msg %x (%s) hwnd %p wp %lx lp %lx\n",
info.type, info.msg.message,
@ -2098,16 +2097,16 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
case MSG_CALLBACK_RESULT:
if (size >= sizeof(struct callback_msg_data))
{
const struct callback_msg_data *data = (const struct callback_msg_data *)buffer;
const struct callback_msg_data *data = buffer;
call_sendmsg_callback( data->callback, info.msg.hwnd,
info.msg.message, data->data, data->result );
}
goto next;
continue;
case MSG_WINEVENT:
if (size >= sizeof(struct winevent_msg_data))
{
WINEVENTPROC hook_proc;
const struct winevent_msg_data *data = (const struct winevent_msg_data *)buffer;
const struct winevent_msg_data *data = buffer;
hook_proc = data->hook_proc;
size -= sizeof(*data);
@ -2121,7 +2120,7 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
if (!(hook_proc = get_hook_proc( hook_proc, module )))
{
ERR( "invalid winevent hook module name %s\n", debugstr_w(module) );
goto next;
continue;
}
}
@ -2140,7 +2139,7 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
data->hook, info.msg.message, info.msg.hwnd, info.msg.wParam,
info.msg.lParam, data->tid, info.msg.time);
}
goto next;
continue;
case MSG_OTHER_PROCESS:
info.flags = ISMEX_SEND;
if (!unpack_message( info.msg.hwnd, info.msg.message, &info.msg.wParam,
@ -2148,7 +2147,7 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
{
/* ignore it */
reply_message( &info, 0, TRUE );
goto next;
continue;
}
break;
case MSG_HARDWARE:
@ -2156,7 +2155,7 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
hwnd, first, last, flags & PM_REMOVE ))
{
TRACE("dropping msg %x\n", info.msg.message );
goto next; /* ignore it */
continue; /* ignore it */
}
thread_info->GetMessagePosVal = MAKELONG( info.msg.pt.x, info.msg.pt.y );
/* fall through */
@ -2169,20 +2168,20 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
else
peek_message( msg, info.msg.hwnd, info.msg.message,
info.msg.message, flags | PM_REMOVE, changed_mask );
goto next;
continue;
}
if (info.msg.message >= WM_DDE_FIRST && info.msg.message <= WM_DDE_LAST)
{
if (!unpack_dde_message( info.msg.hwnd, info.msg.message, &info.msg.wParam,
&info.msg.lParam, &buffer, size ))
goto next; /* ignore it */
continue; /* ignore it */
}
*msg = info.msg;
msg->pt.x = (short)LOWORD( thread_info->GetMessagePosVal );
msg->pt.y = (short)HIWORD( thread_info->GetMessagePosVal );
thread_info->GetMessageTimeVal = info.msg.time;
thread_info->GetMessageExtraInfoVal = extra_info;
HeapFree( GetProcessHeap(), 0, buffer );
if (buffer != local_buffer) HeapFree( GetProcessHeap(), 0, buffer );
HOOK_CallHooks( WH_GETMESSAGE, HC_ACTION, flags & PM_REMOVE, (LPARAM)msg, TRUE );
return TRUE;
}
@ -2198,8 +2197,6 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
/* if some PM_QS* flags were specified, only handle sent messages from now on */
if (HIWORD(flags) && !changed_mask) flags = PM_QS_SENDMESSAGE | LOWORD(flags);
next:
HeapFree( GetProcessHeap(), 0, buffer );
}
}