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Re: Porting Boehm-gc to embedded m68k environment

From: David Daney <ddaney at avtrex dot com>
To: John Neil <jneil at atrove dot com>
Cc: java at gcc dot gnu dot org
Date: Tue, 04 Nov 2003 22:05:51 -0800
Subject: Re: Porting Boehm-gc to embedded m68k environment
References: <000001c3a357$2d5c1ec0$0100a8c0@RICHO>

John Neil wrote:

3.  Why do the Jv_realloc and Jv_malloc functions in prims.cc us
realloc/malloc directly rather than the corresponding GC function's
GC_malloc/GC_alloc.  Is this for efficiency reasons, to reduce the amount of
memory the GC has to scan during a collection.

Jv_malloc et. al. are used to allocate non-garbage-collected memory. So by definition you cannot used GCed memory for this.

They are used by the parts of the runtime need to explicitly manage their own memory. The support for soft and weak references uses it. And there are surely other parts of the runtime that need it as well.

David Daney.

References:
- Porting Boehm-gc to embedded m68k environment
  - From: John Neil

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