Thread synchronization--kernel object implements thread synchronization--Event kernel Object

1 Event Kernel Object2 3 There are two different types of event type objects, manual reset and automatic reset4 Manual Reset: When a manual reset object is triggered, all threads waiting for the object become available for dispatch. 5 Automatic Reset: When an automatic reset object is triggered, only one thread waiting for the event becomes scheduled6 7 here is a function to create an event kernel object:8 HANDLE CreateEvent (9 lpsecurity_attributes Lpeventattributes,Ten BOOL bManualReset, One BOOL Binitialstate, A pctstr lpname); -  - the first to fourth parameter is similar to creating other kernel objects, presumably familiar.  the It 's not a referral here.  - The second parameter, bManualReset, is a bool value that tells the system whether to reset the object manually (TRUE) or to reset the object automatically (FALSE). - The third parameter, Binitialstate, is whether the event is initialized to the trigger state (TRUE), or the state is not triggered (FALSE) -  + BOOL SetEvent (HANDLE hevent); - The function turns the event into a trigger state +  A BOOL resetevent (HANDLE hevent); at The function changes the event to a non-triggering state -  -  - How to use: - 1) - //defining an Event object 1 in HANDLE g_hevent; -  to 2) + //Create a manually reset event object and put the event in the trigger State -G_hevent =CreateEvent (null,false,true,null); the  * 3) $ //called in the threadPanax Notoginseng DWORD WINAPI threadfunone (PVOID pvparam) - { the WaitForSingleObject (g_hevent,infinite); +g_x++; A  the return 0; + } -  $#include"windows.h" $#include"iostream" - using namespacestd; - LongG_x =0 ; the  - //defining an Event object 1Wuyi HANDLE g_hevent;  the  - //defining thread Functions 1 Wu DWORD WINAPI threadfunone (PVOID pvparam); -  About //Defining thread Functions 2 $ DWORD WINAPI threadfuntwo (PVOID pvparam); -  - intMain () - { A  +     //Create a manually reset event object and put the event in the trigger State theG_hevent =CreateEvent (null,true,true,null); -  $     //set event to not trigger state the     //resetevent (g_hevent); the  the     //set event to trigger State the     //SetEvent (g_hevent); -  in     //Create thread 1 theHANDLE Hthreadone = CreateThread (NULL,0, Threadfunone,0,0, NULL); the CloseHandle (hthreadone); About  the     //Create thread 2 theHANDLE hthreadtwo = CreateThread (NULL,0, Threadfuntwo,0,0, NULL); the CloseHandle (hthreadtwo); +  -     //let the main thread hang first to make sure that the other threads perform the completion theSleep ( +); Bayicout<<g_x<<Endl; the     return 0 ; the } -  - DWORD WINAPI threadfunone (PVOID pvparam) the { the WaitForSingleObject (g_hevent,infinite); theg_x++; the  -     return 0; the } the  the DWORD WINAPI threadfuntwo (PVOID pvparam)94 { theSleep ( $); the WaitForSingleObject (g_hevent,infinite); theg_x++; 98  About     return 0; -}