event.c

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#include <windows.h>
#include <stdio.h>
 
HANDLE events[2];
 
DWORD WINAPI thread( LPVOID crap )
{
    SetEvent( events[0] );
    if( crap )
        SetEvent( events[1] );
    return 1;
}
 
int main( void )
{
    DWORD id, Status;
    printf( "Creating events\n" );
    events[0] = CreateEvent( 0, TRUE, FALSE, 0 );
    events[1] = CreateEvent( 0, TRUE, FALSE, 0 );
    printf( "Created events\n" );
    CreateThread( 0, 0, thread, 0, 0, &id );
    printf( "WaitForSingleObject %s\n", ( WaitForSingleObject( events[0], INFINITE ) == WAIT_OBJECT_0 ? "worked" : "failed" ) );
    ResetEvent( events[0] );
    CreateThread( 0, 0, thread, 0, 0, &id );
    printf( "WaitForMultipleObjects with waitall = FALSE %s\n", ( WaitForMultipleObjects( 2, events, FALSE, INFINITE ) == WAIT_OBJECT_0 ? "worked" : "failed" ) );
    ResetEvent( events[0] );
    CreateThread( 0, 0, thread, (void *)1, 0, &id );
    Status = WaitForMultipleObjects( 2, events, TRUE, INFINITE );
    printf( "WaitForMultipleObjects with waitall = TRUE %s\n", ( Status == WAIT_OBJECT_0 || Status == WAIT_OBJECT_0 + 1 ? "worked" : "failed" ) );
    ResetEvent( events[0] );
    printf( "WaitForSingleObject with timeout %s\n", ( WaitForSingleObject( events[0], 100 ) == WAIT_TIMEOUT ? "worked" : "failed" ) );
    return 0;
}