source: trunk/src/psapi/initterm.cpp@ 1036

Last change on this file since 1036 was 951, checked in by sandervl, 26 years ago

Initterm creates LX image object during initialization
File size: 3.9 KB
Line 
1/* $Id: initterm.cpp,v 1.2 1999-09-15 23:26:08 sandervl Exp $ */
2
3/*
4 * DLL entry point
5 *
6 * Copyright 1998 Sander van Leeuwen
7 * Copyright 1998 Peter Fitzsimmons
8 *
9 *
10 * Project Odin Software License can be found in LICENSE.TXT
11 *
12 */
13
14/*-------------------------------------------------------------*/
15/* INITERM.C -- Source for a custom dynamic link library */
16/* initialization and termination (_DLL_InitTerm) */
17/* function. */
18/* */
19/* When called to perform initialization, this sample function */
20/* gets storage for an array of integers, and initializes its */
21/* elements with random integers. At termination time, it */
22/* frees the array. Substitute your own special processing. */
23/*-------------------------------------------------------------*/
24
25
26/* Include files */
27#define INCL_DOSMODULEMGR
28#define INCL_DOSPROCESS
29#include <os2wrap.h> //Odin32 OS/2 api wrappers
30#include <stdlib.h>
31#include <stdio.h>
32#include <string.h>
33#include <odin.h>
34#include <win32type.h>
35#include <odinlx.h>
36#include <misc.h> /*PLF Wed 98-03-18 23:18:15*/
37
38extern "C" {
39void CDECL _ctordtorInit( void );
40void CDECL _ctordtorTerm( void );
41}
42
43/*-------------------------------------------------------------------*/
44/* A clean up routine registered with DosExitList must be used if */
45/* runtime calls are required and the runtime is dynamically linked. */
46/* This will guarantee that this clean up routine is run before the */
47/* library DLL is terminated. */
48/*-------------------------------------------------------------------*/
49static void APIENTRY cleanup(ULONG reason);
50
51
52/****************************************************************************/
53/* _DLL_InitTerm is the function that gets called by the operating system */
54/* loader when it loads and frees this DLL for each process that accesses */
55/* this DLL. However, it only gets called the first time the DLL is loaded */
56/* and the last time it is freed for a particular process. The system */
57/* linkage convention MUST be used because the operating system loader is */
58/* calling this function. */
59/****************************************************************************/
60unsigned long SYSTEM _DLL_InitTerm(unsigned long hModule, unsigned long
61 ulFlag)
62{
63 size_t i;
64 APIRET rc;
65
66 /*-------------------------------------------------------------------------*/
67 /* If ulFlag is zero then the DLL is being loaded so initialization should */
68 /* be performed. If ulFlag is 1 then the DLL is being freed so */
69 /* termination should be performed. */
70 /*-------------------------------------------------------------------------*/
71
72 switch (ulFlag) {
73 case 0 :
74 _ctordtorInit();
75
76 CheckVersionFromHMOD(PE2LX_VERSION, hModule); /*PLF Wed 98-03-18 05:28:48*/
77
78 /*******************************************************************/
79 /* A DosExitList routine must be used to clean up if runtime calls */
80 /* are required and the runtime is dynamically linked. */
81 /*******************************************************************/
82
83 if(RegisterLxDll(hModule, 0, 0) == FALSE)
84 return 0UL;
85
86 rc = DosExitList(0x0000F000|EXLST_ADD, cleanup);
87 if(rc)
88 return 0UL;
89
90 break;
91 case 1 :
92 UnregisterLxDll(hModule);
93 break;
94 default :
95 return 0UL;
96 }
97
98 /***********************************************************/
99 /* A non-zero value must be returned to indicate success. */
100 /***********************************************************/
101 return 1UL;
102}
103
104
105static void APIENTRY cleanup(ULONG ulReason)
106{
107 _ctordtorTerm();
108 DosExitList(EXLST_EXIT, cleanup);
109 return ;
110}
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