source: trunk/src/odincrt/initterm.cpp@ 3669

Last change on this file since 3669 was 2649, checked in by sandervl, 26 years ago

Rewrote dll entrypoint
File size: 5.3 KB
Line 
1/* $Id: initterm.cpp,v 1.3 2000-02-05 02:05:37 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 <misc.h> /*PLF Wed 98-03-18 23:18:15*/
35#include <exitlist.h>
36
37extern "C" {
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 CDECL 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 CDECL CRT_term(void);
49void CDECL _ctordtorInit( void );
50void CDECL _ctordtorTerm( void );
51}
52
53/*-------------------------------------------------------------------*/
54/* A clean up routine registered with DosExitList must be used if */
55/* runtime calls are required and the runtime is dynamically linked. */
56/* This will guarantee that this clean up routine is run before the */
57/* library DLL is terminated. */
58/*-------------------------------------------------------------------*/
59static void APIENTRY cleanup(ULONG reason);
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 /*******************************************************************/
96 /* A DosExitList routine must be used to clean up if runtime calls */
97 /* are required and the runtime is dynamically linked. */
98 /*******************************************************************/
99
100 rc = DosExitList(EXITLIST_ODINCRT|EXLST_ADD, cleanup);
101 if(rc)
102 return 0UL;
103 #if 1 /*
104 * Experimental console hack. Sets apptype to PM anyhow.
105 * First Dll to be initiated should now allways be OdinCrt!
106 * So include odincrt first!
107 */
108 PPIB pPIB;
109 PTIB pTIB;
110 rc = DosGetInfoBlocks(&pTIB, &pPIB);
111 if (rc != NO_ERROR)
112 return 0UL;
113 pPIB->pib_ultype = 3;
114 #endif
115 break;
116 case 1 :
117 break;
118 default :
119 return 0UL;
120 }
121
122 /***********************************************************/
123 /* A non-zero value must be returned to indicate success. */
124 /***********************************************************/
125 return 1UL;
126}
127
128
129static void APIENTRY cleanup(ULONG ulReason)
130{
131 _ctordtorTerm();
132 CRT_term();
133 DosExitList(EXLST_EXIT, cleanup);
134 return ;
135}
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