172 lines
4.9 KiB
C
172 lines
4.9 KiB
C
/*
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* Win32 events
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*
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* Copyright 1998 Alexandre Julliard
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*/
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#include <assert.h>
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#include <string.h>
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#include "winerror.h"
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#include "heap.h"
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#include "syslevel.h"
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#include "server.h"
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/***********************************************************************
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* CreateEvent32A (KERNEL32.156)
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*/
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HANDLE WINAPI CreateEventA( SECURITY_ATTRIBUTES *sa, BOOL manual_reset,
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BOOL initial_state, LPCSTR name )
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{
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struct create_event_request req;
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struct create_event_reply reply;
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if (!name) name = "";
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req.manual_reset = manual_reset;
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req.initial_state = initial_state;
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req.inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
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CLIENT_SendRequest( REQ_CREATE_EVENT, -1, 2, &req, sizeof(req), name, strlen(name)+1 );
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SetLastError(0);
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CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL );
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if (reply.handle == -1) return 0;
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return reply.handle;
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}
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/***********************************************************************
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* CreateEvent32W (KERNEL32.157)
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*/
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HANDLE WINAPI CreateEventW( SECURITY_ATTRIBUTES *sa, BOOL manual_reset,
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BOOL initial_state, LPCWSTR name )
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{
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LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, name );
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HANDLE ret = CreateEventA( sa, manual_reset, initial_state, nameA );
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if (nameA) HeapFree( GetProcessHeap(), 0, nameA );
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return ret;
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}
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/***********************************************************************
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* WIN16_CreateEvent (KERNEL.457)
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*/
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HANDLE WINAPI WIN16_CreateEvent( BOOL manual_reset, BOOL initial_state )
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{
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return CreateEventA( NULL, manual_reset, initial_state, NULL );
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}
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/***********************************************************************
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* OpenEvent32A (KERNEL32.536)
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*/
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HANDLE WINAPI OpenEventA( DWORD access, BOOL inherit, LPCSTR name )
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{
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struct open_event_request req;
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struct open_event_reply reply;
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int len = name ? strlen(name) + 1 : 0;
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req.access = access;
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req.inherit = inherit;
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CLIENT_SendRequest( REQ_OPEN_EVENT, -1, 2, &req, sizeof(req), name, len );
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CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL );
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if (reply.handle == -1) return 0; /* must return 0 on failure, not -1 */
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return (HANDLE)reply.handle;
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}
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/***********************************************************************
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* OpenEvent32W (KERNEL32.537)
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*/
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HANDLE WINAPI OpenEventW( DWORD access, BOOL inherit, LPCWSTR name )
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{
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LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, name );
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HANDLE ret = OpenEventA( access, inherit, nameA );
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if (nameA) HeapFree( GetProcessHeap(), 0, nameA );
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return ret;
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}
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/***********************************************************************
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* EVENT_Operation
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*
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* Execute an event operation (set,reset,pulse).
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*/
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static BOOL EVENT_Operation( HANDLE handle, enum event_op op )
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{
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struct event_op_request req;
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req.handle = handle;
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req.op = op;
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CLIENT_SendRequest( REQ_EVENT_OP, -1, 1, &req, sizeof(req) );
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return !CLIENT_WaitReply( NULL, NULL, 0 );
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}
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/***********************************************************************
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* PulseEvent (KERNEL32.557)
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*/
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BOOL WINAPI PulseEvent( HANDLE handle )
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{
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return EVENT_Operation( handle, PULSE_EVENT );
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}
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/***********************************************************************
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* SetEvent (KERNEL32.644)
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*/
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BOOL WINAPI SetEvent( HANDLE handle )
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{
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return EVENT_Operation( handle, SET_EVENT );
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}
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/***********************************************************************
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* ResetEvent (KERNEL32.586)
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*/
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BOOL WINAPI ResetEvent( HANDLE handle )
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{
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return EVENT_Operation( handle, RESET_EVENT );
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}
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/***********************************************************************
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* NOTE: The Win95 VWin32_Event routines given below are really low-level
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* routines implemented directly by VWin32. The user-mode libraries
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* implement Win32 synchronisation routines on top of these low-level
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* primitives. We do it the other way around here :-)
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*/
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/***********************************************************************
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* VWin32_EventCreate (KERNEL.442)
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*/
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HANDLE WINAPI VWin32_EventCreate(VOID)
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{
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HANDLE hEvent = CreateEventA( NULL, FALSE, 0, NULL );
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return ConvertToGlobalHandle( hEvent );
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}
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/***********************************************************************
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* VWin32_EventDestroy (KERNEL.443)
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*/
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VOID WINAPI VWin32_EventDestroy(HANDLE event)
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{
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CloseHandle( event );
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}
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/***********************************************************************
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* VWin32_EventWait (KERNEL.450)
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*/
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VOID WINAPI VWin32_EventWait(HANDLE event)
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{
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SYSLEVEL_ReleaseWin16Lock();
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WaitForSingleObject( event, INFINITE );
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SYSLEVEL_RestoreWin16Lock();
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}
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/***********************************************************************
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* VWin32_EventSet (KERNEL.451)
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*/
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VOID WINAPI VWin32_EventSet(HANDLE event)
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{
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SetEvent( event );
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}
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