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S3/S4/S5 Long Run Test
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1. Why need it?6 ^1 i! r) f* `7 B0 o0 p) e# F
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NB研发的工程中,需要跑很多的测试项目,其中long run S3/S4/S5就是非常重要的测试项目。而且对于测试结果非常看重,一般long run测试fail就没法出货。常规的测试方法就是10~20台机器测试S3/S4/S5 1000 cycle,如果fail率在万分之几就有可能要挂了。于是我就有了写一个long run S3/S4/S5测试程序的想法了。
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2. How to implement?8 r1 d. V w# F9 j
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心动不如行动,Let’s go!经过几番查阅MSDN,S3/S4的功能已经有些眉目了,可是如何实现S5 wakeup呢?猛翻SDK&DDK,狂试API结果发现不行,好像没有相关的API能做到这件事。最后联系微软的FAE,他们的结论也是如此。既然常规做法不行,那么我就另辟蹊径。我知道BIOS Setup menu 有个选项可以设置RTC唤醒,只要机器还有电S5的状态下也可以唤醒机器。那么BIOS是怎么做的呢?我请教了BIOS 得知需要做两个动作:1.设置CMOS中的alarm time 2:将chipset RTC_EN bit置起然后进入S5。系统在alarm time到达时会产生wakeup event,Chipset会送power sequence系统就会开机。通过一个IO port driver,完成上述过程后我调用API ExitWindowsEx(EWX_SHUTDOWN|EWX_FORCE,0);关机,我等的头发都白了系统也没有唤醒L,到底什么地方出了问题呀?后来我用SE.exe模拟上述过程,结果发现RTC_EN被我修改过之后,过了一会居然又被改回原来的值了,看起来windows在幕后做了不少小动作哦J,这样一来这个方法就行不通了,那么该怎么办呢?答案就是使用EC_BIOS去做,只要有电EC就会运行,那么S5时EC仍然在工作,所以只需要EC在特定的条件下模拟一个开机动作即可。思路已经有了那么该如何实现呢?方法有两种:a.通过IO port driver 下81 cmd给66 port,然后将EC ram index和value送给62 port,这样就可以修改EC ram了,然后EC在S5时检查该EC ram值如果非0就倒数计时,时间到了就模拟一个开机动作,从而完成S5 wake up。b.同样是写EC ram不过使用不同的方法,我们可以在BIOS asl code里定制一个WMI ACPI device,并且在该device scope提供query/set EC ram的方法,并且提供一个WMI ACPI的driver,这样应用程序就可以方便的操纵EC ram了,而且一旦完成这只driver就可以完成非常多的增值部分,比如我们可以写一个程序读写EC ram中的battery info;或者我们可以写一个读取thermal info程序等等。
, x: P+ ]' d# S3 W$ C& K如下图1是程序的运行画面,该测试程序实现了S3/S4/S5的功能S3/S4在xp下面可以正常工作,而
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vista下无法唤醒L。下S3/S4是通下述代码实现的:
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//hibernate and standby
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int1 P$ ?% K! A( n, u4 r
CAutoPowerOnShutdownDlg::SetPower(BOOL% @! U2 n/ {/ f8 K
bSuspend,BOOL
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TOKEN_PRIVILEGES: m$ g- k0 r3 s1 r/ C5 ~) S& E0 w
tp;
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HANDLE
6 ~8 e2 d. O T9 R2 UhToken;
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8 t3 K7 k, g. QLUID( m( B0 G& G7 V+ F, s/ ^/ \
luid;* e( _# r; h; s3 B% u
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: ?4 \" i, V* f- K G, MLPTSTR
6 |+ A$ E8 T& Z* gMachineName=NULL;
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if(!OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES,&hToken2 s* i0 _7 v' w: T4 P: R- H
))
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RTN_ERROR;9 s @3 @) ~6 ?5 A
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* b( G4 V6 _1 p# f- N if(!LookupPrivilegeValue(MachineName,
3 Z8 p- F9 Q1 ^8 A; U& a0 f* VSE_SHUTDOWN_NAME,) q4 u4 T: p, A& G5 k( C
&luid))- t8 G! b2 {( S* Q
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RTN_ERROR;
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tp.PrivilegeCount
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tp.Privileges[0].Luid% B) [1 J. N# u$ R) a1 m9 n
=
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tp.Privileges[0].Attributes$ X; d9 ?" P8 z- w: Z; D# L0 a
=
9 g/ ~7 F. _7 u) M6 hSE_PRIVILEGE_ENABLED;
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0 C' F. L4 c. S: ZAdjustTokenPrivileges(hToken,
8 ^4 A+ c: n- c0 U6 K9 ?FALSE,
- { f% g# v9 G- r$ V4 M$ Q: G8 p&tp,
8 a& ^0 U7 j1 ]: Q: E* xsizeof(TOKEN_PRIVILEGES),NULL,
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2 l% k, n8 Q4 ]7 |9 V( b+ M; ZNULL, q) c& P3 C7 _+ i( Q$ U5 T
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( i. m) ?2 e$ j0 q$ gSetSystemPowerState(bSuspend,bForce);
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S3/S4 wake up function是通过在下去的时候设置一个WaitableTimer实
4 |4 Y5 E+ ^8 O* ]. v现唤醒的功能代码如下所示:6 D2 n( K# _/ _# O% N) G
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PBT_APMSUSPEND:
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{
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7 H! _" a0 b Q" O& [' LHANDLE hTimer=::CreateWaitableTimer(NULL,TRUE,CString(_T("WaitForResume")));
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if(!hTimer)4 p4 s. {9 ^/ N9 U8 r5 B# k
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MessageBox(CString(_T("Fail7 _- M# |# j9 Q% Y$ B
to
b" c( E2 R5 G, P( A3 Rcreate$ u- |( V/ Y" R5 x, C
waitable' w0 o7 e& K) M# n/ i2 z3 Z
timer!")));
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- ~6 j: A0 X9 F8 C2 s+ N: I9 Z3 LhTimer=OpenWaitableTimer(TIMER_ALL_ACCESS,TRUE,CString(_T("WaitForResume")));
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2 ~$ M9 O( F; i+ h: \. ?* RLARGE_INTEGER
% E; V1 D* B- Z* ]4 Y) ]) [liDueTime; n$ P3 c8 ?$ k0 Z* x9 @ t
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liDueTime.QuadPart=m_DlInf.m_TimeSnd *1000*1000*(-10);& M5 ~8 i2 X4 y9 E; Y9 V- \
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if(!::SetWaitableTimer(hTimer,&liDueTime,0,NULL,NULL,TRUE))
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{
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MessageBox(CString(_T("Fail
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waitable
# |' W' H' V% r& Mtimer!")));
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break;
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8 A" c8 ^& ]- N& W/ abreak;
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最关键的部分就是S5 wake up了我们来看看它的实现代码吧,代码中最核
* S* [1 J2 ]$ |心的部分就是同连接到我们定制的WMI class MSI_System,然后通过7 s' j7 j2 [6 ~5 p' d7 ~- A
HRESULT PutInstance(! X) O; x4 b, ~7 x p+ g# R9 _/ w3 C. g: e
[in]
9 _) Z# I8 d) `IWbemClassObject* pInst,
h! b9 m3 i* D$ r: m$ r[in]' j. U, S7 W7 t
LONG lFlags,3 f- |! L, B6 y( U
[in]; Q: S P. E8 A. Q7 L
IWbemContext* pCtx,- B0 e9 {$ M8 F& J, }) s3 r
[out], A% N1 ~- _# M" u" R* t r, ], z
IWbemCallResult** ppCallResult);修改该class的System变量而该变量在BIOS的asl中被定义在EC ram之' c: i1 d7 x+ ^5 u! q
中的特定位置,这样就会改变EC ram中的值了。1 M+ O; r$ l9 x. ~6 d g3 k8 n
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( H6 K- ?& V l Ivoid CAutoPowerOnShutdownDlg::SetS4WakeTimer(unsigned char seconds)* [0 B# K, i4 t8 y; k; p- q
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HRESULT hres;
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// Step 1: --------------------------------------------------% K- i6 q$ f$ `
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1 X1 d5 h# K, L2 ?# f4 G// Initialize COM. ------------------------------------------0 e0 M$ o7 [1 y: E% q8 |* d' B
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hres =
0 r7 h1 r6 s; _" ?1 R! `3 |5 ^! hCoInitializeEx(0, COINIT_MULTITHREADED); ( w# G- t9 g; x
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if (FAILED(hres))8 a8 ]- W0 t6 }2 _) A
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cout << "Failed to initialize COM library. Error code = 0x"
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! \2 C& U; p; }% |/ X<< hex << hres << endl;
0 z9 T* v$ t7 r* B; M return;
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// Step 2: --------------------------------------------------2 K6 t" g$ p4 q, L
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- J% q( z8 e5 d6 j% ]// Set general COM security levels --------------------------+ O4 G( @. ^5 J6 i
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# x: m. _9 p" m; p/ [// Note: If you are using Windows 2000, you need to specify -
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0 E! o) }; \" p// the default authentication credentials for a user by using
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0 O% r2 G/ ^" z% n9 v// a SOLE_AUTHENTICATION_LIST structure in the pAuthList ----5 e" c; k1 n/ T( i/ h5 Q' T6 a
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// parameter of CoInitializeSecurity ------------------------2 x k& u; h$ g$ w8 f4 k
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" a2 S# ]+ k7 C0 U& l4 v& bhres =
$ v' T: z5 S3 @5 zCoInitializeSecurity(
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0 Z2 E U' C0 F& T# ]+ p2 C, t5 CNULL,
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0 f {; j4 ?) e3 ^8 X" _2 z5 s6 I! o/ J% A' l" q3 L
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# [5 M& V4 l \
// COM authentication
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NULL,
/ W6 t: J9 i% y8 K$ g8 ^// Authentication services2 Z% y7 g" `7 M Z8 ^, v
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// Reserved: |& X! G2 D d% G: n* g
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// Default authentication 0 w( J: D2 e6 }5 z6 S& ` k
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RPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation
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NULL,: {; F, r F, ~! l% f+ L F
// Authentication info5 a# y. w: P8 s, N
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' y% Y7 Y5 L1 B7 h( NEOAC_NONE,9 a8 z0 I* w+ ]
// Additional capabilities
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NULL
$ ]7 B6 R# U7 N* ?4 b3 q# e1 M// Reserved
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if (FAILED(hres))5 V1 b) }' E0 ~" P9 i- L
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{
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9 \$ c+ A6 ~& w7 _2 fcout << "Failed to initialize security. Error code = 0x" . p! j' y- U% F/ a
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5 n- b# |5 h% l" I/ M+ g) m<< hex << hres << endl;
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CoUninitialize();
' K" ?. N9 S. F return;
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}
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// Step 3: ---------------------------------------------------# f6 K) R/ b! ~0 s2 J- v1 i! Z0 l1 d
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3 M( Q% z" l* s- L W$ k6 B// Obtain the initial locator to WMI -------------------------) L4 k2 m+ z1 I, h" u0 y
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IWbemLocator *pLoc = NULL;/ H$ T4 r0 Z, b* \4 `: k
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hres = CoCreateInstance(& {' S& T$ } B+ W
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) S4 C# p0 w/ P( o& d! X" ?& jCLSID_WbemLocator,& C8 m M6 F) F# z( y% `( [
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7 U* w0 ?" t% o& {CLSCTX_INPROC_SERVER,
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; s4 p+ ]* R0 Q; ^2 ]IID_IWbemLocator, (LPVOID *) &pLoc);% r. g# c, ~; w- X
% i: I. a- G V& h: C3 b
Q H" g9 e3 j+ l* b& h9 e# a( d% _" q1 {+ h: N
. H% U- f* E! N3 l) I6 gif (FAILED(hres))" h- k% M) x, e; {' A! x3 ?
& u& e+ O+ A% n! f- F
6 i; T- r* b3 r6 J% `{" X9 m. o7 e: d! Q$ {
! ]1 i6 K5 o# s) H7 M5 X0 c- q- t/ j; k) Q0 H- E: O7 T& \ ?
cout << "Failed to create IWbemLocator object."
4 X' D4 w+ w! a% h: o, ^" a
% L8 d* v1 M$ u5 d* U
/ q" v F4 h; Z. Z* B. ~<< " Err code = 0x"9 R& L+ E9 y8 V* |6 V1 V) m1 e, U
, D$ l6 w7 ?; x0 G* O
! p! l k: @- z) I/ E: _<< hex << hres << endl;/ q: V' ^9 l4 ^. J' \
- l; e. [% w J3 [" U
7 Z; @2 C. r! i l8 g% ]5 B* `CoUninitialize();
) u4 w- k8 g4 x, e1 X( U
( X: T0 y5 K8 V8 j7 ?; _: z% C# s
return ;$ a! Q* p; N5 o4 c9 A
// Program has failed.: X# I1 P7 o: A$ D7 O% Z8 P
" E; n; @7 L0 o9 f% g3 }6 M4 q4 Q e/ C: S
}; I0 r X" Z' i) d9 e
: X- [! |3 V3 n- P
* O- C. H6 f6 |7 f! o9 a$ M
" e1 X+ o2 f" @( m: ?5 O' X
// Step 4: -----------------------------------------------------" f1 K: S2 {+ w# f E. a0 B
* m! Q- o3 q0 a6 S z6 I6 k: x. F3 [! v$ l P0 ~( D: e
- p( @& U1 l j7 R7 n9 K! o// Connect to WMI through the IWbemLocator::ConnectServer method+ ~7 a" ^" {# z. p% J1 ]
/ i7 j) C$ e/ j2 s! ^" _
2 V/ U- v5 d2 u% D
" T8 b5 D2 C2 pIWbemServices *pSvc = NULL;
0 l7 g T* z- O, B" v H, b" @! S @/ t& Z Z; }3 o& `9 K
5 G. k( ?% Z9 S% k0 ]/ N. \" g k
$ [: M& N" r- \& m$ ^
" a: ] v( Y2 t// Connect to the root\cimv2 namespace with# r5 M1 m4 R% v4 I c
! D1 h3 l w0 d/ Q" Q. g3 I
& _1 o) G" r1 }# h2 @6 X4 b' u
// the current user and obtain pointer pSvc
# t$ ]7 y3 s2 b0 [. W# }3 C( f! Z7 E0 T3 _- y
4 x, l1 w, l: c& @( B4 J// to make IWbemServices calls.
: O; H# {) p; y" ?, s4 z# k% i ^, d0 C' ?6 A
; ^+ [0 l/ S$ n; q+ Z6 J6 Z
hres = pLoc->ConnectServer(
5 v0 R$ O8 v* R
0 \2 f) c, S z2 s% z. F0 E5 ?& ]# U/ F {; q2 ~& n
_bstr_t(L"ROOT\\WMI"), // Object path of WMI namespace
5 W/ H7 Z# ^8 B: e7 q8 t
/ q+ z! q7 J& ~% d( O) p, q5 i. p) C$ |4 V ~5 `* D, b
NULL,
- R! M# n7 N3 {$ o, O' a// User name. NULL = current user
T6 f6 V- Y$ q9 O; N, N) b" M; u' O& a+ M" a: [! e5 K! o
5 n7 Q9 B3 D7 {4 P! ]" wNULL,- J8 W6 v1 c( w7 [. t5 l; q6 j% |
// User password. NULL = current
. q& Z5 d/ o! j, ]9 `6 f8 q ]( d0 y" S9 x. a; p
$ R+ w5 B- m1 _ X+ C
0,
& o: B" l: Z$ {8 [6 U1 K// Locale. NULL indicates current; n1 g+ t' }$ s/ p4 {9 [
7 ~/ b- R ]+ n- I$ H8 T% Q
: K( D$ S5 j( c/ U$ O. D/ @NULL,
5 w4 X1 j8 M3 p& f# @( l* t+ K// Security flags.- l% J* ~8 g4 c
( y3 C$ _( m: u* O, C8 c
4 F, L% D1 r9 t, r( p3 M1 J0,0 W( i, l0 M6 B$ `" C# I- g
// Authority (e.g. Kerberos)
, u# C9 l9 M9 d5 G" e5 I. O' S1 o; b0 E4 }3 g# k' l( I: h
4 m) B1 n$ W. J, @
0,. A6 |/ l' ]5 b+ j
// Context object . A" x* U3 q% E9 f( n c1 H
6 D9 d( b, L- i! f& X, X& B! V" I& s
) K* c$ t0 h/ h( C! s; n0 M/ v&pSvc
( S( X( {( X: S) q F: v3 z2 K* T// pointer to IWbemServices proxy
4 P8 q( \* f2 d" v+ v6 I' |* U% m
# a4 e, b' Q8 V
# p4 x, a; U# X- J! e);8 O% t1 Q6 J& e$ y' L5 t9 l
9 g9 r7 `: ~# E# y& u& t* V) ~. D
- p& _9 `7 J5 o* Z: H2 W$ [' Q
( J( }3 Z* L2 J8 `if (FAILED(hres))
, M6 L; ]- ~0 K4 \) z4 T
$ Z* X/ B" z! s4 @! T
) C p: ?- g. _. q& J, e6 @) @{' |3 F9 Z& `' ~" X ~9 Q: M
6 ^) W. W, L x7 W, F. N
k0 N8 n, L2 ~& ]' R; D% A1 ccout << "Could not connect. Error code = 0x" , V' v3 D. r" w2 b
6 P" _, o. ~7 E- Y1 M# L
( ^* L( a8 x1 x<< hex << hres << endl;
+ I1 P$ K- b/ I: q$ f0 ~2 i. z: ]2 J7 o7 |7 u5 O5 i
0 n% N! U# D* K. h( T8 x
pLoc->Release();" b8 M& s5 t# c+ e$ A% k6 p
, c3 {3 @5 i) U7 Q
# o2 M1 i" y' d- ^: N- |. a0 V4 b& o" o. }3 `& N$ Y, E; P; M
CoUninitialize();: L0 z% S( r7 P( c6 C
0 Y, K: }# r9 D6 J* n0 n: T- R
9 u8 z2 I+ F1 f3 i
7 L1 n* u" |$ g! J0 X' C/ X: E* c* S8 Q9 C: M# F# c
return ;& c& V( U' m8 d# E: d" l9 t& d
// Program has failed.
, C! p$ P8 z0 N$ d: E: q9 D0 O# v/ A- Y7 e
1 T5 b7 S* c- d6 R+ S' D+ p& i
}
% G5 e$ Z- ]6 s/ z, V/ l. q- [5 X* q5 B: z! b; [
# Z7 `5 u2 q& {+ S
* v' K3 \- x/ @6 F5 F
cout << "Connected to ROOT\\CIMV2 WMI namespace" << endl;0 X, Y7 s. L# G# I. l
2 S+ I; d+ N; U, }
# b$ D; ]6 I5 ~6 Z0 M8 m( L
' O. F3 w1 s2 ]8 T
8 }/ {- y2 U" T g2 z. V1 S// Step 5: --------------------------------------------------3 ], P+ i3 A8 g+ U, K" r8 T" F" w6 w) L
" b8 M' m) v& \* P) N$ K9 C! w) {/ m$ P8 V; I' ?9 y
// Set security levels on the proxy -------------------------
0 {% n, _! K+ J, G7 P
7 j5 g" l; E5 ?
! W( M, i6 ^3 S4 c# ]5 ?! q/ B$ }2 Y/ R9 i8 b8 S
hres = CoSetProxyBlanket(, d- t2 j7 g# X0 B0 |
: o4 F) k" i( ?, f+ ~3 \# w4 e( l% \
pSvc,
3 {- {% e% ^0 W3 `# V$ k// Indicates the proxy to set
- }! J% W! k, a+ f, j/ f9 d+ N0 T9 O, e: o
|9 K. c( M6 e" r: Y4 @7 V8 l
RPC_C_AUTHN_WINNT,& I) ^- h( p1 b
// RPC_C_AUTHN_xxx
/ U: }2 `: o3 c, ^& F' n+ c$ b6 m" i- P# g
$ J+ p, }5 [; |' ^- WRPC_C_AUTHZ_NONE,9 [; |; t5 r S1 c: W. q
// RPC_C_AUTHZ_xxx! T; c: H3 y* D l, s
; X. I0 I( b. x( w1 D: o' m/ P) }, F j8 ~( L4 l8 p0 y
NULL,
4 [* p- W7 P; h3 z: k/ t3 D& k9 K: D3 x" Y! s! w) [
// Server principal name
! ?: K8 W9 ?; L/ L7 X
# J% h+ U1 ^& d: T. u/ t. [1 c/ b& |; p/ ?1 J. _* D0 \
RPC_C_AUTHN_LEVEL_CALL,
. Y; X5 g; g: F; g) b) F// RPC_C_AUTHN_LEVEL_xxx - I' X# P0 J: v4 T, h
* [: j" c" r1 g5 p& c; B# Q, t" ~* N {( |. ?
RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx6 C; E) b% Y; b" h" R+ s
t& N$ j! k. X3 P/ W" z
& U: @" B1 @1 B
NULL,4 }4 m/ F% D, t
// client identity
3 ^% W1 \ O+ y1 h7 T$ l% X; A/ E, K1 G) k$ ^
5 P) u1 y. b9 i' j# \EOAC_NONE: ? l' h# ?3 s' I. `( A
// proxy capabilities : V, J) q8 P; m* h
- X1 @( x# F% Z) _
3 @2 d& }" K- d& x, a);
8 u8 b, S0 H- p: Q$ g6 r. i3 a# t/ Y* v! X4 |
* [; V7 ]" ]; u0 g- R, [5 V& I
0 l) e4 m2 u( R8 A" vif (FAILED(hres))9 K3 n- B0 l, t3 \) e+ y! _/ {
* i8 _" K( f& |
$ k, i3 @. C5 H: m" a{
2 O. L; |% Y) r: x' ^
2 p3 A. p2 L7 K5 U/ \
8 _3 h& a' z( ?# Q+ ccout << "Could not set proxy blanket. Error code = 0x" ( g9 }! S; N/ O/ u
& _% O; o6 Y7 |& [* Q( {9 M+ k3 B$ ]7 j9 g: E
<< hex << hres << endl;
8 [$ {! \/ m- S' z0 v7 P1 N( i# {9 q8 @4 L6 e/ M' a
# f# r5 F2 X R2 }( s/ m. N) H9 zpSvc->Release();
9 M9 s8 y: t' e
/ Z: W: D9 O3 N p9 X. |2 t$ Q0 p( X: D9 U- X
pLoc->Release();4 e3 g: }9 H5 `& L$ y1 `/ m* j
6 e/ i* z1 u$ L+ x3 \, w9 n6 K. Y* E
* o$ H9 Y( {4 G( j/ t
CoUninitialize();. A: P. r# e7 g$ M3 b
% d+ q5 y/ c" m9 D* F
/ N& N4 X8 g' d4 M) Treturn ;+ a6 d. i' z! B3 B( R6 t% w! s+ F
// Program has failed.
# E4 [8 `4 ]: P! e' a. ]7 L
- ?6 @! r5 D1 D
$ p/ u" o" }7 h0 b7 L$ ?}
! K$ I) f( e: C+ y. A+ E5 G
. H9 f$ o9 H8 x4 B
; S: Q5 ^) w- l$ Z+ l
, ?, T+ Z- q" Z! ] g// Step 6: --------------------------------------------------
( t8 R+ [) v& @6 k) I
# v$ n) G/ I) \ J* C0 p. v
/ g6 m$ C4 _9 [% |* Z! y. Q' m// Use the IWbemServices pointer to make requests of WMI ----/ s3 R0 ]1 T' E+ [, M: p% n
; ]! g# j' }- v& C8 C5 T( y
9 @* B! ?+ n! u/ [+ m
5 x7 h/ h7 X5 w4 m// For example, get the name of the operating system
4 N5 u' p# Y0 Q. f" Z$ z! b. ^$ W# `
/ `: Z: _' Y( g+ E7 w" V+ V* k
IEnumWbemClassObject* pEnumerator = NULL;
. v* p; h! k# }# C3 G8 Z8 f% a4 i" X! T) }- w& z0 g* _) x/ C
8 k i& u; s B% x
0 x# O/ e3 q+ z2 t* k2 S, l3 n3 v3 C/ lhres = pSvc->ExecQuery(/ O0 i; J$ L$ X5 q1 R: w
% l# r; | L+ z2 f( B3 m# S$ b1 i
bstr_t("WQL"),
4 T. |! V3 F: ~, S6 T9 @$ A* O) a% x7 \, @& a4 o; t. o
3 H6 L- Y$ m, R2 u h- V" Pbstr_t("SELECT * FROM MSI_System"),, O% P" I" |( O, y$ N% }: n2 b% X
% @5 R1 t j# C( ?- X& M0 _& E, |" D, p5 y
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, , j% {/ E$ U/ S' L7 x# `; J+ Z
; }0 L) F& Q5 I+ Q0 L% Q
) ]5 b3 [- N8 }3 R. NNULL,! d4 k( v: C+ S
8 T% d. [ ?7 z4 p
, J* M9 V t# l# L7 ?" y&pEnumerator);
; i8 o, y1 e8 m9 z* F% V' N" l @0 r! ]4 d. A
7 c% x X$ Y( v+ i
8 O$ p2 s9 q& v' w9 I# [! J- t, G* ^) p3 T/ j8 `
if (FAILED(hres)), y, W5 {6 M7 `9 C3 @
, I2 @3 o* D2 |5 Z6 h$ M. t1 g, ]1 }5 n$ F
{, l2 o/ v% F5 c# e: x; t
' w" X- b! [% k' t% ]$ R5 i( Z" {6 d) h2 ]. M5 X" ], ~8 J
cout << "Query for operating system name failed."& |9 x9 Q2 p6 K
2 r; h7 M6 M- C
! W3 F. w$ ~2 [0 g7 U& n
<< " Error code = 0x"
) P& e. D, x2 i9 D$ L% ^! d3 b- L0 b; f8 u, [+ l" N
3 R# n; s; X0 f, k1 g' a! U
<< hex << hres << endl;0 S% s3 H& ^, S8 x9 z
' L8 [; D, ~$ r# @" `
( R1 f( L0 ~, F; F4 f9 Q2 A6 }pSvc->Release();! ~, q3 z3 K2 K6 F2 x3 ~
$ q( W/ A9 R3 V$ P
3 ?1 W8 M$ t0 Z- R% ?8 lpLoc->Release();# Y3 |; V% S) U
0 Z2 L+ g# C9 ]9 b
) l6 f+ `0 D' o' \: k1 V. }
CoUninitialize();. B# x0 F. R! z5 o7 o! Z5 K
1 b7 X1 d( g: W. v" O1 _' p- Y3 J! l8 ]* i8 g5 R% u
return;9 J: w- s) B" }& W& u
" F4 o, E4 F& p1 d6 U; p) ^
// Program has failed.9 h8 ~" l% e% k* i! `7 p" q' J/ {
. F" U$ T$ v( h$ ?7 Q2 A# {- L
7 K' W; n; Q* Q9 H' S$ v+ |% R7 H}
9 t. X, F& R" o
7 k1 r8 B, a8 O# o! _/ W: F0 |/ y/ {. b! U' {& y* Z% p
9 v) y0 k S+ ^' ^" j$ w// Step 7: -------------------------------------------------, f4 X/ n1 }6 O% j
( M1 E3 }8 r% p: _; z/ A( d* ]
// Get the data from the query in step 6 -------------------0 }# B! ^+ k9 j0 Z5 f) v
8 o/ J' C2 J6 q* g Q8 Y; c: d
y/ e# W- _" U) G1 G0 q! c. b2 n7 k" z) i7 L4 R$ h7 E* }
; |. C8 P" z) k% k1 T2 X8 Y/ \IWbemClassObject *pclsObj;/ y+ h+ ^$ h( S, u) F
/ Q& s4 H% M' m
: V _& g* K+ t3 P7 D7 R6 P
ULONG uReturn = 0;% }4 A* Z! M0 }4 ^: e! u# q7 [
: Z( x8 {6 D' c. Z: m q
3 y+ V L G% P3 qint count = 0;
0 Y, S- g" ?1 c( Y {0 L
]( s0 J) I" B, K* J* b( \, w+ a8 U2 o: h' X
while (pEnumerator)
8 b+ h+ H% c7 I; J- o8 s& F7 u1 j3 F/ j
' b/ v. a( r0 c: U/ S; S8 i{
?# k: [, l+ ]( q- {& r, A/ d, o+ n, s# o0 N/ Z7 V/ [
# x7 P8 X7 K8 u; t; d' z- @# v$ j& s
HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1,
9 Q/ x$ v- c9 o) z, \
7 _- K6 @) W0 H; P' Y) G, C, k/ ~; ]
8 C7 {0 K$ }7 f% _% P1 b k+ F: C' V
&pclsObj, &uReturn);
6 h; \6 X. @% n6 c9 a+ f( i0 w! \3 W8 z/ W
0 F0 m, X5 p- C6 m {* z# s
E2 D4 m' _) P; W
% P9 I* |2 _) Dif(0 == uReturn)4 S/ k7 c( @% X/ P4 i+ b5 L0 Z
" X2 I G* P, R5 x" n
# g, w" `. I" g1 t+ f) X+ @8 D7 f9 D$ F8 a2 R
{
* i1 N& }+ U: \ ]6 [. O* l- ]* M0 e; ? X; [/ x& W
% \4 u. S4 o: V! {! \: ^3 P- ]; o1 W
6 ~3 o* K) l. b9 H! I. t! Z& `6 @break;2 l/ W% i+ t0 e' ]0 Y% d$ S
) ]/ |' y; F" L
8 \- F% t. F0 z0 }; {
: k! R. _4 C, R& Y}
; g* r5 Q5 C5 h" S0 u- P. ^8 q1 S) l/ e: u, j+ O
if(++count == 3)
, ?1 k* M4 T: o
) d; K: p2 ?5 Q; ^0 q& U{, i: f, b- {0 W h
6 G+ l' l! r. h! Z/ x
CString tmp;
F0 l9 {, V4 y' [- S3 }7 S; L& v3 K4 k/ ~1 }% { h
tmp.Format(_T("%d"),seconds);" E8 ]3 e" S+ S6 S
1 @( z8 Q' h) G6 L0 \0 `1 X
( [7 X8 e I; I* s. V/ `) R: M. q// Set up the property value.! s4 q A, k2 C. o( q
( A$ \- Z% A9 w3 W( fVARIANT v;
8 ?2 e6 M# P7 x! K+ x
" b- v0 R: s9 B8 fVariantInit(&v);( `$ N' \* B4 s9 d/ v% u
z7 B$ b! d- y$ M6 F+ b4 B8 xV_VT(&v) = VT_BSTR;/ y; T: y( V1 [* l0 o3 n
' f6 A! | _% u; j5 i+ q( IV_BSTR(&v) = tmp.AllocSysString(); // - decimal format, not hex
) B( J: w2 W$ w9 y; u0 d/ w
2 I4 V! r0 f* h( j
3 ^1 j* _" f$ \8 F7 chr = pclsObj->ut(L"System",0,&v,CIM_UINT8);+ {- g! p( p! L7 O( T$ N- D
// Clean up.
& S" s ^! _; v% Q+ x
6 V0 y* l2 |/ U. h1 w9 N) uVariantClear(&v);( V( w/ `; C; e3 m* F/ o
2 U) ~- M3 H2 ?4 X& {$ C+ z7 k" p% c6 S9 s5 \
if (hr == WBEM_E_ACCESS_DENIED): D9 q* _* g I9 z8 X) o# Y- ~
4 X& F5 B. m9 E{
c7 Z1 b7 M+ |; v( f5 g6 u! G! M5 [7 U* q) N/ t' E
printf("WBEM_E_ACCESS_DENIED\n");
0 r0 c, P" g' E4 V: z" N, f% f7 j- I+ N/ ^; R
// Processing to handle specific error code
& X1 [- m B* v u' D" ]
! h2 |% h. ]% M( g$ e, E1 d. d}9 i( C& G* L& y, `7 D$ F
else if (hr == WBEM_S_DUPLICATE_OBJECTS)$ l% c: }1 U, | N: H
, m: g- G2 X$ [; z, n: |7 U
{1 t. K- ^, u0 G+ [9 R
; y! w) G0 Y3 z$ X8 t' }
printf("WBEM_S_DUPLICATE_OBJECTS\n");
% M! m( t4 O0 l4 S$ ] // All other cases, including errors specific to COM* f4 g3 ~+ E' r) T1 Y, f
( q# [/ M- Q0 v3 c# N, D p% s7 R
}
+ Y/ n D K' y, Z: _% L6 o else if (hr == WBEM_E_INVALID_OBJECT)
, E0 S$ _3 t- I7 y0 b0 ]$ X+ Z! ^* y2 N$ R
{( X& I7 `) Q9 e- c" ~2 i" O
2 H3 }6 g% F1 \8 O6 C5 |printf("WBEM_E_INVALID_OBJECT\n");
& E/ U3 S/ Q3 C* R* u
( }. Z) h6 H+ f}
: p; L, d g1 D1 D" \0 P else if(hr == WBEM_E_INVALID_PARAMETER)0 R5 f* y& @$ }1 x% W( N
7 w6 f% b! H6 @! \5 h: J2 C3 s# @* I{9 [9 W( X8 k/ r. }
. `" ?' A- M# ]5 jprintf("WBEM_E_INVALID_PARAMETER\n");* o Q( i Q+ O2 x0 q! @7 y2 E
: J% N5 r* o1 @" M, P$ A0 n7 \}; c$ l, `: U ]2 e
else if(hr == WBEM_S_NO_ERROR)3 v/ \5 x8 N; z% @; R
( n' E9 g2 o. t
{
/ `8 e' G+ @8 S! q
6 Y% S1 l5 c) b i! ~3 tprintf("WBEM_S_NO_ERROR\n");7 K* p* V% i) E5 j* `( U
9 Q) M& m9 r" ~# b6 Q}+ w% G# T+ v9 c) S- d
else
. M7 X3 b& B- o$ d
! ^8 G2 c, r( y/ S4 a8 X! ^8 pprintf("ERROR:%x",hr);- ~2 `4 R5 t. B$ Y% ~
+ I9 e0 i- e: ~/ d" V
1 V3 S9 [/ U* g% bHRESULT hRes = pSvc->utInstance(pclsObj,WBEM_FLAG_CREATE_OR_UPDATE,0,0);3 z' P) a& a: W; \
8 _! A+ P( j2 N8 P k; j7 n. V4 z
% e+ f( J4 H% j, I5 [ // Check for specific error and status codes.
3 B* [5 T8 m/ ], }3 C if (hRes == WBEM_E_ACCESS_DENIED)
" p1 r3 I/ R$ C3 Q% g. Q$ [% m- q$ w6 S' Y) s
{% k- g4 b4 Z6 [ u+ ?) ^. I- I9 o: l s
q$ K! E! T: _9 t$ c! `! \
printf("WBEM_E_ACCESS_DENIED\n");: Z( m( D9 R% M0 p# M( {) ?! \
0 Y; f, G7 d. G* K2 J& E% t // Processing to handle specific error code+ f$ E. s; a( F4 _, _( J% h$ Q4 s* f
& n; [! r5 C7 Y* g# \8 o- N$ p}1 k6 s2 L0 o3 z: I: w
else if (hRes == WBEM_S_DUPLICATE_OBJECTS)
# y. y' i! t# Y6 S6 N7 v1 Z
' y. ]% `% N8 ]5 O) U5 ?8 x0 T{3 ?, a/ p. x) i; v3 q0 L, U& \0 a e
5 c( u/ m6 [) e6 n' O; |( @' e; i
printf("WBEM_S_DUPLICATE_OBJECTS\n");7 n) |. w5 y7 y# y6 O' I* F
// All other cases, including errors specific to COM
" S Y& Q: Q0 E! Z' U$ A. ~% p# W; `% ^* j2 B
}: q: r% h; R1 i+ ^$ U% Q& C
else if (hRes == WBEM_E_INVALID_OBJECT)
% V1 }. Z0 I0 r' {9 [! z
* @$ m6 o" r6 T' j7 I! \{
9 n& T' s, M- b5 ?3 _! |8 S
8 r5 \& I6 J) ?6 [" P7 Mprintf("WBEM_E_INVALID_OBJECT\n");
* `" A6 X4 [! q# M j( d1 t* S' d9 B
}8 y+ S2 V! ]/ S2 J0 K6 \
else if(hRes == WBEM_E_INVALID_PARAMETER)
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/ V( k: u$ t) g8 A/ ]/ k4 A) |printf("WBEM_E_INVALID_PARAMETER\n");; e- t7 ` X L0 o* K" t& K
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}
' R' j) v1 V$ Q/ L else if(hRes == WBEM_S_NO_ERROR)5 r2 `0 C# p$ J: ^+ P9 Y* W
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printf("WBEM_S_NO_ERROR\n");
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// Cleanup7 ]8 q- s" t( x# ~
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// ========7 a# F! C" Q% N# N0 \. ?: r$ t0 k/ _
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pSvc->Release();, c0 H+ ~1 k1 g7 u, E! I
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pLoc->Release();8 `. s# z3 r# M2 K
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pEnumerator->Release();
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$ F$ z. b/ y$ f- opclsObj->Release();
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CoUninitialize();# O/ w" M- ^5 x
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以上就是该程序实现的全部过程,完整的source code可以在附件下载。S5 wake up使用了WMI ACPI,
# _3 l1 |+ e1 M4 f, V7 T该部分比较复杂,我在后续会发一个WMIACPI的系列,完整的描述WMI ACPI实现过程中
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BIOS,EC,OS,Driver分别扮演的角色。9 t* \3 J8 N6 \& J
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that's all!
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Peter 0 x7 Q B: b7 A" e# @8 f8 p$ r* C" x
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[ 本帖最后由 peterhu 于 2009-6-3 14:25 编辑 ] |
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