source: trunk/src/version/initterm.c@ 4

Last change on this file since 4 was 4, checked in by ktk, 26 years ago

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File size: 4.9 KB
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1/* $Id: initterm.c,v 1.1 1999-05-24 20:20:05 ktk Exp $ */
2
3/*
4 *
5 * Project Odin Software License can be found in LICENSE.TXT
6 *
7 */
8/*
9 * VERSION DLL entry point
10 *
11 * Copyright 1998 Sander van Leeuwen
12 * Copyright 1998 Peter Fitzsimmons
13 *
14 */
15
16/*-------------------------------------------------------------*/
17/* INITERM.C -- Source for a custom dynamic link library */
18/* initialization and termination (_DLL_InitTerm) */
19/* function. */
20/* */
21/* When called to perform initialization, this sample function */
22/* gets storage for an array of integers, and initializes its */
23/* elements with random integers. At termination time, it */
24/* frees the array. Substitute your own special processing. */
25/*-------------------------------------------------------------*/
26
27
28/* Include files */
29#define INCL_DOSMODULEMGR
30#define INCL_DOSPROCESS
31#include <os2.h>
32#include <stdlib.h>
33#include <stdio.h>
34#include <string.h>
35#include <builtin.h>
36#include "misc.h" /*PLF Wed 98-03-18 23:18:29*/
37
38/*-------------------------------------------------------------------*/
39/* _CRT_init is the C run-time environment initialization function. */
40/* It will return 0 to indicate success and -1 to indicate failure. */
41/*-------------------------------------------------------------------*/
42int _CRT_init(void);
43/*-------------------------------------------------------------------*/
44/* _CRT_term is the C run-time environment termination function. */
45/* It only needs to be called when the C run-time functions are */
46/* statically linked. */
47/*-------------------------------------------------------------------*/
48void _CRT_term(void);
49void __ctordtorInit( void );
50void __ctordtorTerm( void );
51
52/*-------------------------------------------------------------------*/
53/* A clean up routine registered with DosExitList must be used if */
54/* runtime calls are required and the runtime is dynamically linked. */
55/* This will guarantee that this clean up routine is run before the */
56/* library DLL is terminated. */
57/*-------------------------------------------------------------------*/
58static void APIENTRY cleanup(ULONG reason);
59
60
61
62/****************************************************************************/
63/* _DLL_InitTerm is the function that gets called by the operating system */
64/* loader when it loads and frees this DLL for each process that accesses */
65/* this DLL. However, it only gets called the first time the DLL is loaded */
66/* and the last time it is freed for a particular process. The system */
67/* linkage convention MUST be used because the operating system loader is */
68/* calling this function. */
69/****************************************************************************/
70unsigned long _System _DLL_InitTerm(unsigned long hModule, unsigned long
71 ulFlag)
72{
73 size_t i;
74 APIRET rc;
75
76 /*-------------------------------------------------------------------------*/
77 /* If ulFlag is zero then the DLL is being loaded so initialization should */
78 /* be performed. If ulFlag is 1 then the DLL is being freed so */
79 /* termination should be performed. */
80 /*-------------------------------------------------------------------------*/
81
82 switch (ulFlag) {
83 case 0 :
84
85 /*******************************************************************/
86 /* The C run-time environment initialization function must be */
87 /* called before any calls to C run-time functions that are not */
88 /* inlined. */
89 /*******************************************************************/
90
91 if (_CRT_init() == -1)
92 return 0UL;
93 __ctordtorInit();
94
95 CheckVersionFromHMOD(PE2LX_VERSION, hModule); /*PLF Wed 98-03-18 05:28:48*/
96
97 /*******************************************************************/
98 /* A DosExitList routine must be used to clean up if runtime calls */
99 /* are required and the runtime is dynamically linked. */
100 /*******************************************************************/
101
102 rc = DosExitList(0x0000FF00|EXLST_ADD, cleanup);
103 if(rc)
104 return 0UL;
105
106 break;
107 case 1 :
108 break;
109 default :
110 return 0UL;
111 }
112
113 /***********************************************************/
114 /* A non-zero value must be returned to indicate success. */
115 /***********************************************************/
116 return 1UL;
117}
118
119
120static void APIENTRY cleanup(ULONG ulReason)
121{
122 __ctordtorTerm();
123 _CRT_term();
124 DosExitList(EXLST_EXIT, cleanup);
125 return ;
126}
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