source: trunk/src/kernel32/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: 5.2 KB
Line 
1/* $Id: initterm.cpp,v 1.14 1999-09-15 23:26:07 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#include <wprocess.h>
36#include "handlemanager.h"
37#include "profile.h"
38#include "initterm.h"
39#include <win32type.h>
40#include <odinlx.h>
41
42/*-------------------------------------------------------------------*/
43/* A clean up routine registered with DosExitList must be used if */
44/* runtime calls are required and the runtime is dynamically linked. */
45/* This will guarantee that this clean up routine is run before the */
46/* library DLL is terminated. */
47/*-------------------------------------------------------------------*/
48static void APIENTRY cleanup(ULONG reason);
49extern void APIENTRY Win32DllExitList(ULONG reason);
50
51extern "C" {
52void CDECL _ctordtorInit( void );
53void CDECL _ctordtorTerm( void );
54}
55
56//Global DLL Data
57#pragma data_seg(_GLOBALDATA)
58int globLoadNr = 0;
59#pragma data_seg()
60
61/* Tue 03.03.1998: knut */
62/* flag to optimize DosAllocMem to use all the memory on SMP machines */
63ULONG flAllocMem = 0;
64int loadNr = 0;
65
66/****************************************************************************/
67/* _DLL_InitTerm is the function that gets called by the operating system */
68/* loader when it loads and frees this DLL for each process that accesses */
69/* this DLL. However, it only gets called the first time the DLL is loaded */
70/* and the last time it is freed for a particular process. The system */
71/* linkage convention MUST be used because the operating system loader is */
72/* calling this function. */
73/****************************************************************************/
74unsigned long SYSTEM _DLL_InitTerm(unsigned long hModule, unsigned long
75 ulFlag)
76{
77 size_t i;
78 APIRET rc;
79 ULONG sysinfo;
80
81 /*-------------------------------------------------------------------------*/
82 /* If ulFlag is zero then the DLL is being loaded so initialization should */
83 /* be performed. If ulFlag is 1 then the DLL is being freed so */
84 /* termination should be performed. */
85 /*-------------------------------------------------------------------------*/
86
87 switch (ulFlag)
88 {
89 case 0 :
90 loadNr = globLoadNr++;
91
92 dprintf(("kernel32 init\n"));
93 _ctordtorInit();
94
95 CheckVersionFromHMOD(PE2LX_VERSION, hModule); /*PLF Wed 98-03-18 05:28:48*/
96
97 if(RegisterLxDll(hModule, 0, 0) == FALSE)
98 return 0UL;
99
100 /*******************************************************************/
101 /* A DosExitList routine must be used to clean up if runtime calls */
102 /* are required and the runtime is dynamically linked. */
103 /*******************************************************************/
104
105 rc = DosExitList(0x0000F000|EXLST_ADD, cleanup);
106 if (rc)
107 return 0UL;
108
109 /* knut: check for high memory support */
110 rc = DosQuerySysInfo(QSV_VIRTUALADDRESSLIMIT, QSV_VIRTUALADDRESSLIMIT, &sysinfo, sizeof(sysinfo));
111
112 if ( rc == 0 && sysinfo > 512 ) //VirtualAddresslimit is in MB
113 flAllocMem = PAG_ANY; // high memory support. Let's use it!
114 else flAllocMem = 0; // no high memory support
115
116 InitializeTIB(TRUE);
117 //SvL: Do it here instead of during the exe object creation
118 //(std handles can be used in win32 dll initialization routines
119 HMInitialize(); /* store standard handles within HandleManager */
120 break;
121 case 1 :
122 UnregisterLxDll(hModule);
123 break;
124 default :
125 return 0UL;
126 }
127
128 /***********************************************************/
129 /* A non-zero value must be returned to indicate success. */
130 /***********************************************************/
131 return 1UL;
132}
133
134
135static void APIENTRY cleanup(ULONG ulReason)
136{
137 dprintf(("kernel32 exit %d\n", ulReason));
138 WriteOutProfiles();
139 DestroyTIB();
140 //NOTE: Must be done after DestroyTIB
141 CloseLogFile();
142 _ctordtorTerm();
143 DosExitList(EXLST_EXIT, cleanup);
144 return ;
145}
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