[M3devel] AMD64_LINUX gc/stubgen

[Jay]

@M3paranoidgc always succeeds. I see, reading the code, it only does reads. Nevertheless.
 
Simply programs that just allocate memory forever also succeed.
Such as this:
 
jay at amd64a:/dev2/cm3/t$ cat src/t.m3MODULE t EXPORTS Main;
TYPE T1 = RECORD c : ARRAY [0..10000000] OF INTEGER; END;TYPE T2 = RECORD c : ARRAY [0..4095] OF INTEGER; END;
 
VAR a: REFANY;
 
PROCEDURE F1()=VAR b: REFANY;
BEGIN  WHILE TRUE DO    b := NEW(REF T2);    a := NEW(REF T1);  END;END F1;
 
BEGIN  F1();END t.
 
Darn.
 
 - Jay



From: hosking at cs.purdue.eduTo: jay.krell at cornell.eduDate: Sun, 9 Nov 2008 18:02:41 +0000CC: m3devel at elegosoft.comSubject: Re: [M3devel] AMD64_LINUX gc/stubgen
Clearly a problem with GC.  I'm guessing you have something wrong (pointer alignment?) in the configuration.  I suspect if you run with @M3paranoidgc you'll trip over the problem.




On 9 Nov 2008, at 14:09, Jay wrote:

Tony, any tips on this one? :) jay at amd64a:~/dev2/cm3/m3-ui/zeus/AMD64_LINUX$ /cm3/bin/stubgen -v1 -sno RemoteView.T -T.M3IMPTAB @M3nogc always succeeds. jay at amd64a:~/dev2/cm3/m3-ui/zeus/AMD64_LINUX$ /cm3/bin/stubgen -v1 -sno RemoteView.T   -T.M3IMPTAB usually fails:****** runtime error:***    NEW() was unable to allocate more memory.***    file "../src/runtime/common/RTAllocator.m3", line 285***Formatter.m3: CONST ChunkSize = 128; (* Must be a power of 2 *)PROCEDURE New(wr: Wr.T;  width: CARDINAL:= 75): T RAISES {} =  BEGIN    WITH t = NEW(T) DO      t.wr := wr;      t.width := width;      t.indent := 0;        t.numChars := 0;        (* t.stream := RefStream{NIL, ..}; *)        t.buffer := NEW (ExprBuf, 4 * ChunkSize);  << this is the line that fails Lowering chunk size to 64 seemed to make it succeed more often, but not always.I think I'll go back to MIPS64_OPENBSD..probably easier to track that problem down.  - Jay
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