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Annotation of q_a/samples/tls/tlscall.c, revision 1.1

1.1     ! root        1: 
        !             2: /******************************************************************************\
        !             3: *       This is a part of the Microsoft Source Code Samples. 
        !             4: *       Copyright (C) 1993 Microsoft Corporation.
        !             5: *       All rights reserved. 
        !             6: *       This source code is only intended as a supplement to 
        !             7: *       Microsoft Development Tools and/or WinHelp documentation.
        !             8: *       See these sources for detailed information regarding the 
        !             9: *       Microsoft samples programs.
        !            10: \******************************************************************************/
        !            11: 
        !            12: /****************************************************************************\
        !            13: *
        !            14: * MODULE:       tlscall.c
        !            15: *
        !            16: /****************************************************************************/
        !            17: 
        !            18: #include <stdio.h>
        !            19: #include <stdlib.h>
        !            20: #include <stdarg.h>
        !            21: #include <windows.h>
        !            22: #include <string.h>
        !            23: #include <winbase.h>
        !            24: #include "tlsdll.h"
        !            25: 
        !            26: #define NUMTHREADS 3    /* The number of threads to start */
        !            27: 
        !            28: /*-----------------------------------------------------------------*/
        !            29: 
        !            30: void ErrorOut(char errstring[30])
        !            31: /*
        !            32: Purpose: Print out an meainful error code by means of
        !            33:          GetLastError and printf
        !            34: 
        !            35: Inputs:  errstring - the action that failed, passed by the
        !            36:                      calling proc.
        !            37: 
        !            38: Returns: none
        !            39: 
        !            40: Calls:   GetLastError
        !            41: */
        !            42: 
        !            43: {
        !            44: DWORD Error;
        !            45: 
        !            46: Error= GetLastError();
        !            47: printf("Error on %s = %d\n", errstring, Error);
        !            48: }
        !            49: 
        !            50: /*-----------------------------------------------------------------*/
        !            51: 
        !            52: void Another_Thread()
        !            53: /*
        !            54: Purpose: Make a call into a DLL and then terminate, allowing
        !            55:          DLL init. and termination to be called.
        !            56: 
        !            57: Inputs:  none
        !            58: 
        !            59: Returns: none
        !            60: 
        !            61: Calls:   TlsInit: Dummy proc. to allow DLL initialization.
        !            62: */
        !            63: 
        !            64: {
        !            65: Sleep(300);      /* Sleep while other threads start */
        !            66: TlsInit();       /* Call dummy init. procedure */
        !            67: ExitThread(0);   /* Exit, calling DLL termination */
        !            68: }
        !            69: 
        !            70: /*-----------------------------------------------------------------*/
        !            71: 
        !            72: void main(void)
        !            73: /*
        !            74: Purpose: Make a call into a DLL and then terminate, allowing
        !            75:          DLL init. and termination to be called.
        !            76: 
        !            77: Inputs:  none
        !            78: 
        !            79: Returns: none
        !            80: 
        !            81: Calls:   CreateThread: to create threads for DLL init.
        !            82:          ErrorOut: To output any errors
        !            83:          WaitForMultipleObjects: To wait on thread(s) termination
        !            84: */
        !            85: 
        !            86: {
        !            87: int  threadid;
        !            88: HANDLE hThreads[NUMTHREADS];
        !            89: int count;
        !            90: 
        !            91:       /* start NUMTHREADS threads */
        !            92: for (count = 0 ; count < NUMTHREADS ; count++)
        !            93:   {
        !            94:   hThreads[count]= CreateThread(NULL,
        !            95:                                 0,
        !            96:                                 (LPTHREAD_START_ROUTINE)Another_Thread,
        !            97:                                 NULL,
        !            98:                                 0,
        !            99:                                 (LPDWORD)&threadid);
        !           100:   if( hThreads[count] == 0)
        !           101:     ErrorOut("CreateThread");
        !           102:   else
        !           103:     printf("\nStarting thread# %d\n\n", count +1);
        !           104:   }
        !           105: 
        !           106:       /* now wait for threads to terminate */
        !           107: printf("\n\n***** Waiting for %d Threads to Exit*****\n\n", NUMTHREADS);
        !           108: WaitForMultipleObjects( NUMTHREADS,
        !           109:                         hThreads,
        !           110:                         FALSE,
        !           111:                         0xFFFFFFFF);
        !           112: Sleep(1000);
        !           113: printf("\n\n*****   All %d Threads Terminated   *****\n\n", NUMTHREADS);
        !           114: 
        !           115: }

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