[pypy-dev] Re: [pypy-svn] r22006 - in pypy/dist/pypy/translator/c: . src test

[Ben.Young at risk.sungard.com]

Hi Eric,

Just to let you know that on Windows, alloca is spelt _alloca. In later 
versions the preferred version is _malloca, which needs to be matched by a 
_freea, as _malloca can allocate on the heap if the object is too large.

Cheers,
Ben

pypy-svn-bounces at codespeak.net wrote on 12/01/2006 09:31:21:

> Author: ericvrp
> Date: Thu Jan 12 10:31:20 2006
> New Revision: 22006
> 
> Modified:
>    pypy/dist/pypy/translator/c/funcgen.py
>    pypy/dist/pypy/translator/c/src/address.h
>    pypy/dist/pypy/translator/c/test/test_lladdresses.py
> Log:
> Added genc support of stack flavored_malloc
> 
> 
> Modified: pypy/dist/pypy/translator/c/funcgen.py
> 
==============================================================================
> --- pypy/dist/pypy/translator/c/funcgen.py   (original)
> +++ pypy/dist/pypy/translator/c/funcgen.py   Thu Jan 12 10:31:20 2006
> @@ -568,6 +568,8 @@
>          flavor = op.args[0].value
>          if flavor == "raw": 
>              return "OP_RAW_MALLOC(%s, %s, %s);" % (esize, eresult, err) 

> +        elif flavor == "stack": 
> +            return "OP_STACK_MALLOC(%s, %s, %s);" % (esize, eresult, 
err) 
>          else:
>              raise NotImplementedError
> 
> 
> Modified: pypy/dist/pypy/translator/c/src/address.h
> 
==============================================================================
> --- pypy/dist/pypy/translator/c/src/address.h   (original)
> +++ pypy/dist/pypy/translator/c/src/address.h   Thu Jan 12 10:31:20 2006
> @@ -20,5 +20,9 @@
>      r = (void*) malloc(size);    \
>      if (r == NULL) FAIL_EXCEPTION(err, PyExc_MemoryError, "out of 
memory");\
> 
> +#define OP_STACK_MALLOC(size,r,err)    \
> +    r = (void*) alloca(size);    \
> +    if (r == NULL) FAIL_EXCEPTION(err, PyExc_MemoryError, "out of 
memory");\
> + 
>  #define OP_RAW_FREE(x,r,err)        free(x);
>  #define OP_RAW_MEMCOPY(x,y,size,r,err) memcpy(y,x,size);
> 
> Modified: pypy/dist/pypy/translator/c/test/test_lladdresses.py
> 
==============================================================================
> --- pypy/dist/pypy/translator/c/test/test_lladdresses.py   (original)
> +++ pypy/dist/pypy/translator/c/test/test_lladdresses.py   Thu Jan 
> 12 10:31:20 2006
> @@ -88,7 +88,7 @@
>      res = fc()
>      assert res == int('011100' * 2, 2)
> 
> -def test_flavored_malloc():
> +def test_flavored_malloc_raw():
>      class A(object):
>          _alloc_flavor_ = "raw"
>          def __init__(self, val):
> @@ -100,3 +100,15 @@
>          return result
>      fn = compile(f, [int])
>      assert fn(1) == 2
> +
> +def test_flavored_malloc_stack():
> +    class A(object):
> +        _alloc_flavor_ = "stack"
> +        def __init__(self, val):
> +            self.val = val
> +    def f(x):
> +        a = A(x + 1)
> +        result = a.val
> +        return result
> +    fn = compile(f, [int])
> +    assert fn(1) == 2
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