source: trunk/src/kernel32/initterm.cpp@ 120

Last change on this file since 120 was 120, checked in by sandervl, 26 years ago

Include os2wrap.h instead of os2.h
File size: 6.0 KB
Line 
1/* $Id: initterm.cpp,v 1.3 1999-06-19 10:54:41 sandervl Exp $ */
2
3/*
4 * KERNEL32 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_DOSMISC
29#define INCL_DOSPROCESS
30#include <os2wrap.h> //Odin32 OS/2 api wrappers
31#include <stdlib.h>
32#include <stdio.h>
33#include <string.h>
34#include <misc.h>
35
36extern "C" {
37/*-------------------------------------------------------------------*/
38/* _CRT_init is the C run-time environment initialization function. */
39/* It will return 0 to indicate success and -1 to indicate failure. */
40/*-------------------------------------------------------------------*/
41int CDECL CRT_init(void);
42/*-------------------------------------------------------------------*/
43/* _CRT_term is the C run-time environment termination function. */
44/* It only needs to be called when the C run-time functions are */
45/* statically linked. */
46/*-------------------------------------------------------------------*/
47void CDECL CRT_term(void);
48void CDECL _ctordtorInit( void );
49void CDECL _ctordtorTerm( void );
50}
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);
59extern void APIENTRY Win32DllExitList(ULONG reason);
60
61/* Tue 03.03.1998: knut */
62/* flag to optimize DosAllocMem to use all the memory on SMP machines */
63ULONG flAllocMem;
64
65#ifndef PAG_ANY
66 #define PAG_ANY 0x00000400
67#endif
68
69#ifndef QSV_VIRTUALADDRESSLIMIT
70 #define QSV_VIRTUALADDRESSLIMIT 30
71#endif
72
73/****************************************************************************/
74/* _DLL_InitTerm is the function that gets called by the operating system */
75/* loader when it loads and frees this DLL for each process that accesses */
76/* this DLL. However, it only gets called the first time the DLL is loaded */
77/* and the last time it is freed for a particular process. The system */
78/* linkage convention MUST be used because the operating system loader is */
79/* calling this function. */
80/****************************************************************************/
81unsigned long SYSTEM _DLL_InitTerm(unsigned long hModule, unsigned long
82 ulFlag)
83{
84 size_t i;
85 APIRET rc;
86 ULONG sysinfo;
87
88 /*-------------------------------------------------------------------------*/
89 /* If ulFlag is zero then the DLL is being loaded so initialization should */
90 /* be performed. If ulFlag is 1 then the DLL is being freed so */
91 /* termination should be performed. */
92 /*-------------------------------------------------------------------------*/
93
94 switch (ulFlag)
95 {
96 case 0 :
97
98 /*******************************************************************/
99 /* The C run-time environment initialization function must be */
100 /* called before any calls to C run-time functions that are not */
101 /* inlined. */
102 /*******************************************************************/
103
104 if (CRT_init() == -1)
105 return 0UL;
106 _ctordtorInit();
107
108 dprintf(("kernel32 init\n"));
109 CheckVersionFromHMOD(PE2LX_VERSION, hModule); /*PLF Wed 98-03-18 05:28:48*/
110 /*******************************************************************/
111 /* A DosExitList routine must be used to clean up if runtime calls */
112 /* are required and the runtime is dynamically linked. */
113 /*******************************************************************/
114
115 rc = DosExitList(0x0000FF00|EXLST_ADD, cleanup);
116 if (rc)
117 return 0UL;
118
119 rc = DosExitList(0x00002A00|EXLST_ADD, Win32DllExitList);
120 if (rc)
121 return 0UL;
122
123 /* knut: check for high memory support */
124 rc = DosQuerySysInfo(QSV_VIRTUALADDRESSLIMIT, QSV_VIRTUALADDRESSLIMIT, &sysinfo, sizeof(sysinfo));
125
126 if ( rc == 0 && sysinfo > 512 ) //VirtualAddresslimit is in MB
127 flAllocMem = PAG_ANY; // high memory support. Let's use it!
128 else flAllocMem = 0; // no high memory support
129
130 break;
131 case 1 :
132 break;
133 default :
134 return 0UL;
135 }
136
137 /***********************************************************/
138 /* A non-zero value must be returned to indicate success. */
139 /***********************************************************/
140 return 1UL;
141}
142
143
144static void APIENTRY cleanup(ULONG ulReason)
145{
146 dprintf(("kernel32 exit\n"));
147 _dump_allocated(10); /*PLF Wed 98-03-18 23:55:07*/
148 _ctordtorTerm();
149 CRT_term();
150 DosExitList(EXLST_EXIT, cleanup);
151 return ;
152}
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