int _LibMain( int hdll, int reason, void *reserved )
{
thread_data *tdata;
int rc = 0;
switch( reason ) {
case DLL_THREAD_ATTACH:
tdata = ( thread_data * )RdosAllocateMem( __ThreadDataSize );
if( tdata ) {
memset( tdata, 0, __ThreadDataSize );
tdata->__data_size = __ThreadDataSize;
__RdosAddThread( tdata );
}
break;
case DLL_PROCESS_ATTACH:
__InitRtns( INIT_PRIORITY_THREAD );
tdata = ( thread_data * )RdosAllocateMem( __ThreadDataSize );
memset( tdata, 0, __ThreadDataSize );
tdata->__data_size = __ThreadDataSize;
__InitThreadData( tdata );
__RdosInit( 1, tdata, hdll );
__InitRtns( 255 );
__CommonInit();
__sig_init_rtn();
if( !__RdosThreadInit() ) return( -1 );
__InitMultipleThread();
rc = LibMain( hdll, reason, reserved );
if( !rc ) {
__FiniRtns( 0, 255 );
}
break;
case DLL_THREAD_DETACH:
__RdosRemoveThread();
break;
case DLL_PROCESS_DETACH:
__FiniRtns( 0, FINI_PRIORITY_EXIT - 1 );
__RdosRemoveThread();
RdosFreeMem( __FirstThreadData );
__FirstThreadData = NULL;
break;
}
return( rc );
}
int __stdcall DllMain(HANDLE hInst,DWORD ul_reason_being_called,LPVOID lpReserved)
{
/*
Unless environment variable LIBMYSQL_DLLINIT is set, do nothing.
The environment variable is checked once, during the first call to DllMain()
(in DLL_PROCESS_ATTACH hook).
*/
if (ul_reason_being_called == DLL_PROCESS_ATTACH)
do_libmain = (getenv("LIBMYSQL_DLLINIT") != NULL);
if (do_libmain)
return LibMain(hInst,ul_reason_being_called,lpReserved);
return TRUE;
}
BOOL __stdcall DllEntryPoint (HANDLE hDll, DWORD dwReason, LPVOID lpReserved)
{
BOOL fRc;
// char msg[80];
switch(dwReason)
{
case DLL_PROCESS_ATTACH:
// DebugBreak();
break;
}
if (fRc = _CRT_INIT(hDll, dwReason, lpReserved))
fRc = LibMain(hDll, dwReason, lpReserved);
switch(dwReason)
{
case DLL_PROCESS_ATTACH:
// sprintf(msg, "Compob32 returning %d on attach\r\n", fRc);
// OutputDebugStringA(msg);
break;
}
return fRc;
}
unsigned _LibMain( unsigned hmod, unsigned termination )
/******************************************************/
{
static int processes;
unsigned rc;
if( termination != 0 ) {
// If we're running with single DGROUP and tried to load
// twice, do not run any termination code! Also reset the
// process counter so that the already loaded DLL can
// terminate properly
if( processes > 1 ) {
--processes;
return( 0 );
}
rc = LibMain( hmod, termination );
--processes;
#ifdef __SW_BR
__FiniRtns( 0, 255 );
#else
if( _LpwCmdLine ) {
lib_free( _LpwCmdLine );
_LpwCmdLine = NULL;
}
if( _LpwPgmName ) {
lib_free( _LpwPgmName );
_LpwPgmName = NULL;
}
__FiniRtns( FINI_PRIORITY_EXIT, 255 );
// calls to free memory have to be done before semaphores closed
__FreeInitThreadData( __FirstThreadData );
__OS2Fini(); // must be done before following finalizers get called
__FiniRtns( 0, FINI_PRIORITY_EXIT - 1 );
__shutdown_stack_checking();
#endif
return( rc );
}
++processes;
if( processes > 1 ) {
if( __disallow_single_dgroup(hmod) ) {
return( 0 );
}
}
__hmodule = hmod;
#ifdef __SW_BR
{
static char fname[_MAX_PATH];
static wchar_t wfname[_MAX_PATH];
__Is_DLL = 1;
__InitRtns( 255 );
DosQueryModuleName( hmod, sizeof( fname ), fname );
_LpDllName = fname;
_LpwDllName = wfname;
_atouni( _LpwDllName, _LpDllName );
}
#else
{
PTIB pptib;
PPIB pppib;
unsigned i;
DosGetInfoBlocks( &pptib, &pppib );
_RWD_Envptr = pppib->pib_pchenv;
_LpCmdLine = pppib->pib_pchcmd;
while( *_LpCmdLine ) { // skip over program name
_LpCmdLine++;
}
_LpCmdLine++;
_LpwCmdLine = lib_malloc( (strlen( _LpCmdLine ) + 1) * sizeof( wchar_t ) );
_atouni( _LpwCmdLine, _LpCmdLine );
{
// ugly stuff to deal with two copies of .exe name in the
// environment space. apparently the OS fullpath name is
// just before this one in the environment space
char *cmd_path;
cmd_path = pppib->pib_pchcmd;
for( cmd_path -= 2; *cmd_path != '\0'; --cmd_path );
++cmd_path;
_LpPgmName = cmd_path;
_LpwPgmName = lib_malloc( (strlen( _LpPgmName ) + 1) * sizeof( wchar_t ) );
_atouni( _LpwPgmName, _LpPgmName );
}
__InitRtns( INIT_PRIORITY_THREAD );
if( __InitThreadProcessing() == NULL )
return( 0 );
__OS2Init( TRUE, __AllocInitThreadData( NULL ) );
for( i = 2; i <= __MaxThreads; i++ ) {
if( !__OS2AddThread( i, NULL ) ) {
return( 0 );
}
}
__InitRtns( INIT_PRIORITY_EXIT - 1 );
__InitMultipleThread();
{
static char fname[_MAX_PATH];
static wchar_t wfname[_MAX_PATH];
DosQueryModuleName( hmod, sizeof( fname ), fname );
_LpDllName = fname;
_LpwDllName = wfname;
_atouni( _LpwDllName, _LpDllName );
}
__InitRtns( 255 );
}
#endif
__CommonInit();
#ifndef __SW_BR
/* allocate alternate stack for F77 */
__ASTACKPTR = (char *)_STACKLOW + __ASTACKSIZ;
#endif
return( LibMain( hmod, termination ) );
}
int APIENTRY _LibMain( HANDLE hdll, DWORD reason, LPVOID reserved )
{
int rc;
static int processes;
switch( reason ) {
case DLL_THREAD_ATTACH:
#ifndef __SW_BR
if( !__NTAddThread( NULL ) ) {
return( FALSE );
}
#endif
rc = LibMain( hdll, reason, reserved );
break;
case DLL_PROCESS_ATTACH:
++processes;
if( processes > 1 ) {
if( __disallow_single_dgroup( hdll ) ) {
rc = FALSE;
break;
}
}
#ifdef __SW_BR
__Is_DLL = 1;
__InitRtns( INIT_PRIORITY_EXIT - 1 );
#else
// The following initializers are called: (in the CLIB run-time DLL):
// nothing is called
__InitRtns( INIT_PRIORITY_THREAD );
// allocate some thread data storage and initialize run-time variables
{
thread_data *tdata = __AllocInitThreadData( NULL );
if( !tdata || !__NTInit( TRUE, tdata, hdll ) ) {
rc = FALSE;
break;
}
}
// set up TLSIndex thingee
if( !__NTThreadInit() ) { // safe to call multiple times
rc = FALSE;
break;
}
// The following initializers are called: (in the CLIB run-time DLL):
// __chk8087
// __verify_pentium_fdiv_bug
// __Init_Argv
// __imthread_fn (which calls _NTThreadInit and __InitMultipleThread)
__InitRtns( INIT_PRIORITY_EXIT - 1 );
// sets up semaphores and starts linked list of thread data storage
__InitMultipleThread(); // now safe to call multiple times
#endif
if( _pRawDllMain != NULL ) {
if( !_pRawDllMain( hdll, reason, reserved ) ) {
__FiniRtns( 0, FINI_PRIORITY_EXIT - 1 );
rc = FALSE;
break;
}
}
// The following initializers are called: (in the CLIB run-time DLL):
// profilog_init
// __InitWinLinesSem
// dbgdata@do_it
// __setenvp
// __mbInitOnStartup
// __sig_init
// (??) in STK
// __InitFiles
// __clock_init
__InitRtns( 255 );
#ifdef __SW_BR
{
static char fn[_MAX_PATH];
__lib_GetModuleFileNameA( hdll, fn, sizeof( fn ) );
_LpDllName = fn;
}
{
static wchar_t wfn[_MAX_PATH];
__lib_GetModuleFileNameW( hdll, wfn, sizeof( wfn ) );
_LpwDllName = wfn;
}
#endif
__CommonInit();
__sig_init_rtn();
rc = LibMain( hdll, reason, reserved );
if( !rc ) {
__FiniRtns( 0, 255 );
}
break;
case DLL_THREAD_DETACH:
rc = LibMain( hdll, reason, reserved );
#ifndef __SW_BR
__NTRemoveThread( TRUE );
#endif
break;
case DLL_PROCESS_DETACH:
rc = LibMain( hdll, reason, reserved );
__FiniRtns( FINI_PRIORITY_EXIT, 255 );
if( _pRawDllMain != NULL ) {
_pRawDllMain( hdll, reason, reserved );
}
#ifndef __SW_BR
__NTFini(); // must be done before following finalizers get called
#endif
__FiniRtns( 0, FINI_PRIORITY_EXIT - 1 );
#ifndef __SW_BR
__NTRemoveThread( TRUE );
__FreeInitThreadData( __FirstThreadData );
__FirstThreadData = NULL;
#endif
--processes;
}
return( rc );
}
