static void *
my_temp_malloc(size_t size)
{
OSErr result;
struct my_block **block;
long version;
char *ret_ptr;
size=(size+3)&~3;
if (Gestalt(gestaltSystemVersion,&version) || version<0x700) return(nil);
if (size>MY_BLOCK_SIZE) {
if (TempFreeMem()<1024*1024+size) return(nil);
block=(struct my_block **)TempNewHandle(size+sizeof(struct my_block **),&result);
if (!block || !*block || result) return(nil);
TempHLock((Handle)block,&result);
(*block)->next=temp_mem_blocks;
temp_mem_blocks=block;
return((void *)&(*block)->storage);
}
if (size>my_cur_avail) {
if (TempFreeMem()<1024*1024+MY_BLOCK_SIZE) return(nil);
block=(struct my_block **)TempNewHandle(sizeof(struct my_block),&result);
if (!block || !*block || result) return(nil);
TempHLock((Handle)block,&result);
(*block)->next=temp_mem_blocks;
temp_mem_blocks=block;
my_cur_block=(*block)->storage;
my_cur_avail=MY_BLOCK_SIZE;
}
ret_ptr=my_cur_block;
my_cur_block+=size;
my_cur_avail-=size;
return((void *)ret_ptr);
}
BOOL TempMemSeemsLow(Size size)
{
BOOL seemsLow = TempFreeMem() < kTempMemSafetyMargin + size;
if (seemsLow)
{
// Force a heap compaction, and look again.
Size ignored = 0;
TempMaxMem(&ignored);
seemsLow = TempFreeMem() < kTempMemSafetyMargin + size;
}
return seemsLow;
}
pascal void main (XCmdPtr paramPtr) {
/*
This XFCN returns the amount of system memory that's free.
*/
Str255 s;
NumToString (TempFreeMem (), s);
paramPtr->returnValue = PasToZero (paramPtr, s);
} /*main*/
static boolean sysfunctionvalue (short token, hdltreenode hparam1, tyvaluerecord *vreturned, bigstring bserror) {
//
// 2006-06-28 creedon: for Mac, FSRef-ized
//
// 5.0b16 dmb: undo that change. it affect performance adversely if many threads do it.
//
// 5.0b12 dmb: in systemtaskfunc, set flresting to false to make sure we don't slow down too much
//
// 1/18/93 dmb: in systemtaskfunc, don't call processyield directly; use langbackgroundtask
//
// 8/11/92 dmb: make apprunningfunc accept a string or an ostype
//
// 5/20/92 dmb: do processyield directly on systemtaskfunc
//
// 2/12/92 dmb: do partialeventloop on systemtask & bringapptofrontfunc
//
register tyvaluerecord *v = vreturned;
setbooleanvalue (false, v); /*assume the worst*/
switch (token) { /*these verbs don't need any special globals pushed*/
case systemversionfunc: {
bigstring bs;
getsystemversionstring (bs, nil);
if (!langcheckparamcount (hparam1, 0))
return (false);
return (setstringvalue (bs, v));
}
case systemtaskfunc:
if (!langcheckparamcount (hparam1, 0)) /*shouldn't have any parameters*/
return (false);
shellsysverbwaitroutine ();
/*
if (!processyield ())
return (false);
*/
if (!langbackgroundtask (true))
return (false);
(*v).data.flvalue = true;
return (true);
case browsenetworkfunc:
#ifdef MACVERSION
return (langipcbrowsenetwork (hparam1, v));
#endif
#ifdef WIN95VERSION
#pragma message ("WIN95: browsenetworkfunc - not yet implemented!")
break;
#endif
case apprunningfunc: {
OSType appid;
bigstring bsapp;
tyvaluerecord val;
flnextparamislast = true;
/*
if (!getostypevalue (hparam1, 1, &appid))
return (false);
(*v).data.flvalue = findrunningapplication (&appid, nil);
*/
if (!getparamvalue (hparam1, 1, &val))
return (false);
if (val.valuetype == ostypevaluetype) {
setemptystring (bsapp);
appid = val.data.ostypevalue;
}
else {
if (!coercetostring (&val))
return (false);
pullstringvalue (&val, bsapp);
if (!stringtoostype (bsapp, &appid))
appid = 0;
}
(*v).data.flvalue = findrunningapplication (&appid, bsapp, nil);
return (true);
}
case frontappfunc: {
bigstring bs;
if (!langcheckparamcount (hparam1, 0))
return (false);
if (!getfrontapplication (bs, false))
return (false);
return (setstringvalue (bs, v));
}
case bringapptofrontfunc: {
bigstring bs;
flnextparamislast = true;
if (!getstringvalue (hparam1, 1, bs))
return (false);
(*v).data.flvalue = activateapplication (bs);
return (true);
}
case countappsfunc:
if (!langcheckparamcount (hparam1, 0))
return (false);
return (setlongvalue (countapplications (), v));
case getnthappfunc: {
short n;
bigstring bs;
if (!getintvalue (hparam1, 1, &n))
return (false);
if (!getnthapplication (n, bs))
setemptystring (bs);
return (setstringvalue (bs, v));
}
case getapppathfunc: {
bigstring bs;
tyfilespec fs;
flnextparamislast = true;
if ( ! getstringvalue ( hparam1, 1, bs ) )
return ( false );
if ( ! getapplicationfilespec ( bs, &fs ) ) // 2006-02-17 aradke: initializes fs even if it fails
setemptystring (bs);
return ( setfilespecvalue ( &fs, v ) );
}
case memavailfunc:
{
unsigned long memavail;
#ifdef WIN95VERSION
MEMORYSTATUS meminfo;
meminfo.dwLength = sizeof (MEMORYSTATUS);
GlobalMemoryStatus (&meminfo);
memavail = meminfo.dwAvailVirtual;
#endif
#ifdef MACVERSION
memavail = TempFreeMem();
#endif
if (!langcheckparamcount (hparam1, 0)) /*shouldn't have any parameters*/
return (false);
return (setlongvalue (memavail, v));
}
case machinefunc:
#ifdef MACVERSION
//Code change by Timothy Paustian Friday, June 16, 2000 3:13:09 PM
//Changed to Opaque call for Carbon
//Carbon only runs on PPC
#if TARGET_API_MAC_CARBON
return (setstringvalue (machinePPC, v));
#else
#if GENERATINGPOWERPC
return (setstringvalue (machinePPC, v));
#endif
#if GENERATING68K
return (setstringvalue (machine68K, v));
#endif
#endif
#endif
#ifdef WIN95VERSION
return (setstringvalue (machinex86, v));
#endif
break;
case osfunc:
return (sysos (v));
break;
#ifdef WIN95VERSION
case getenvironmentvariablefunc: {
bigstring bsenvname;
bigstring buf;
DWORD res;
flnextparamislast = true;
if (!getstringvalue (hparam1, 1, bsenvname))
return (false);
nullterminate(bsenvname);
res = GetEnvironmentVariable (stringbaseaddress(bsenvname), stringbaseaddress(buf), sizeof(buf)-2);
if (res > sizeof(buf) - 2) {
return (setbooleanvalue (false, v)); //safety valve
}
setstringlength (buf, res);
return (setstringvalue (buf, v));
}
break;
case setenvironmentvariablefunc: {
bigstring bsenvname;
bigstring bsenvval;
bigstring bserror, bserror2;
boolean res;
if (!getstringvalue (hparam1, 1, bsenvname))
return (false);
flnextparamislast = true;
if (!getstringvalue (hparam1, 2, bsenvval))
return (false);
nullterminate(bsenvname);
nullterminate(bsenvval);
res = SetEnvironmentVariable (stringbaseaddress(bsenvname), stringbaseaddress(bsenvval));
if (res) {
return (setbooleanvalue (true, v));
}
getsystemerrorstring (GetLastError(), bserror);
nullterminate(bserror);
wsprintf (bserror2, "Can't set environment variable \"%s\" to \"%s\" because %s", stringbaseaddress (bsenvname), stringbaseaddress (bsenvval), stringbaseaddress (bserror));
setstringlength (bserror2, strlen(stringbaseaddress(bserror2)));
shellerrormessage (bserror2);
return (setbooleanvalue (false, v));
}
break;
#endif
#if TARGET_API_MAC_CARBON == 1
case unixshellcommandfunc: { /*7.0b51 PBS: call shell on OS X*/
Handle hcommand, hreturn;
flnextparamislast = true;
if (!getexempttextvalue (hparam1, 1, &hcommand))
return (false);
newemptyhandle (&hreturn);
if (!unixshellcall (hcommand, hreturn)) {
disposehandle (hreturn);
disposehandle (hcommand);
return (false);
} /*if*/
disposehandle (hcommand);
return (setheapvalue (hreturn, stringvaluetype, v));
}
#endif
#ifdef WIN95VERSION
case winshellcommandfunc: {
Handle hcommand;
Handle houttext = nil;
Handle herrtext = nil;
long exitcode = 0;
tyaddress adrexitcode, adrstderr;
short ctconsumed = 1;
short ctpositional = 1;
boolean flneedexitcode, flneedstderr;
tyvaluerecord val;
if (!getexempttextvalue (hparam1, 1, &hcommand))
return (false);
if (!getoptionaladdressparam (hparam1, &ctconsumed, &ctpositional, "\x0b" "adrExitCode", &adrexitcode.ht, adrexitcode.bs))
return (false);
flnextparamislast = true;
if (!getoptionaladdressparam (hparam1, &ctconsumed, &ctpositional, "\x0b" "adrStdErr", &adrstderr.ht, adrstderr.bs))
return (false);
flneedexitcode = (adrexitcode.ht != nil) || !isemptystring (adrexitcode.bs);
flneedstderr = (adrstderr.ht != nil) || !isemptystring (adrstderr.bs);
newemptyhandle (&houttext);
if (flneedstderr)
newemptyhandle (&herrtext);
if (!winshellcall (hcommand, houttext, herrtext,
(flneedexitcode ? &exitcode : nil))) {
disposehandle (houttext);
disposehandle (herrtext);
disposehandle (hcommand);
return (false);
} /*if*/
disposehandle (hcommand);
if (flneedexitcode) {
setlongvalue (exitcode, &val);
if (!langsetsymboltableval (adrexitcode.ht, adrexitcode.bs, val))
return (false);
}
if (flneedstderr) {
setheapvalue (herrtext, stringvaluetype, &val);
if (!langsetsymboltableval (adrstderr.ht, adrstderr.bs, val))
return (false);
exemptfromtmpstack (&val);
}
return (setheapvalue (houttext, stringvaluetype, v));
}
#endif //WIN95VERSION
default:
break;
}
getstringlist (langerrorlist, unimplementedverberror, bserror);
return (false);
} /*sysfunctionvalue*/
