123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
/*
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* Win32 waitable timers
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*
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* Copyright 1999 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 "file.h" /* for FILETIME routines */
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#include "server.h"
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/***********************************************************************
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* CreateWaitableTimerA (KERNEL32.861)
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*/
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HANDLE WINAPI CreateWaitableTimerA( SECURITY_ATTRIBUTES *sa, BOOL manual, LPCSTR name )
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{
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struct create_timer_request *req = get_req_buffer();
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req->manual = manual;
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req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
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server_strcpyAtoW( req->name, name );
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SetLastError(0);
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server_call( REQ_CREATE_TIMER );
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if (req->handle == -1) return 0;
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return req->handle;
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}
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/***********************************************************************
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* CreateWaitableTimerW (KERNEL32.862)
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*/
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HANDLE WINAPI CreateWaitableTimerW( SECURITY_ATTRIBUTES *sa, BOOL manual, LPCWSTR name )
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{
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struct create_timer_request *req = get_req_buffer();
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req->manual = manual;
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req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
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server_strcpyW( req->name, name );
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SetLastError(0);
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server_call( REQ_CREATE_TIMER );
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if (req->handle == -1) return 0;
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return req->handle;
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}
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/***********************************************************************
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* OpenWaitableTimerA (KERNEL32.881)
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*/
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HANDLE WINAPI OpenWaitableTimerA( DWORD access, BOOL inherit, LPCSTR name )
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{
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struct open_timer_request *req = get_req_buffer();
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req->access = access;
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req->inherit = inherit;
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server_strcpyAtoW( req->name, name );
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server_call( REQ_OPEN_TIMER );
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if (req->handle == -1) return 0; /* must return 0 on failure, not -1 */
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return req->handle;
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}
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/***********************************************************************
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* OpenWaitableTimerW (KERNEL32.882)
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*/
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HANDLE WINAPI OpenWaitableTimerW( DWORD access, BOOL inherit, LPCWSTR name )
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{
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struct open_timer_request *req = get_req_buffer();
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req->access = access;
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req->inherit = inherit;
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server_strcpyW( req->name, name );
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server_call( REQ_OPEN_TIMER );
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if (req->handle == -1) return 0; /* must return 0 on failure, not -1 */
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return req->handle;
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}
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/***********************************************************************
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* SetWaitableTimer (KERNEL32.894)
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*/
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BOOL WINAPI SetWaitableTimer( HANDLE handle, const LARGE_INTEGER *when, LONG period,
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PTIMERAPCROUTINE callback, LPVOID arg, BOOL resume )
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{
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FILETIME ft;
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DWORD remainder;
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struct set_timer_request *req = get_req_buffer();
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if (when->s.HighPart < 0) /* relative time */
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{
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DWORD low = ft.dwLowDateTime;
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GetSystemTimeAsFileTime( &ft );
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ft.dwLowDateTime -= when->s.LowPart;
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ft.dwHighDateTime -= when->s.HighPart;
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if (low < ft.dwLowDateTime) ft.dwHighDateTime--; /* overflow */
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}
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else /* absolute time */
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{
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ft.dwLowDateTime = when->s.LowPart;
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ft.dwHighDateTime = when->s.HighPart;
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}
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req->handle = handle;
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req->sec = DOSFS_FileTimeToUnixTime( &ft, &remainder );
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req->usec = remainder / 10; /* convert from 100-ns to us units */
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req->period = period;
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req->callback = callback;
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req->arg = arg;
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if (resume) SetLastError( ERROR_NOT_SUPPORTED ); /* set error but can still succeed */
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return !server_call( REQ_SET_TIMER );
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}
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/***********************************************************************
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* CancelWaitableTimer (KERNEL32.857)
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*/
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BOOL WINAPI CancelWaitableTimer( HANDLE handle )
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{
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struct cancel_timer_request *req = get_req_buffer();
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req->handle = handle;
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return !server_call( REQ_CANCEL_TIMER );
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}
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