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clarifying contexts can't be freed

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Alex Shinn 2017-08-26 20:55:43 +09:00
parent 6d447d6c15
commit f1eab48fd1
1 changed files with 8 additions and 2 deletions
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10
doc/chibi.scrbl
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@ -375,7 +375,7 @@ int main(int argc, char** argv) {
sexp ctx;
ctx = sexp_make_eval_context(NULL, NULL, NULL, 0, 0);
sexp_load_standard_env(ctx, NULL, SEXP_SEVEN);
sexp_load_standard_ports(ctx, NULL, stdin, stdout, stderr, 0);
sexp_load_standard_ports(ctx, NULL, stdin, stdout, stderr, 1);
dostuff(ctx);
sexp_destroy_context(ctx);
}
@ -441,6 +441,11 @@ using only the parent.
Otherwise, a new heap is allocated with \var{size} bytes, expandable to a
maximum of \var{max_size} bytes, using the system defaults if either is 0.
Note this context is not a malloced pointer (it resides inside a
malloced heap), and therefore can't be passed to \ccode{free()},
or stored in a C++ smart pointer. It can only be reclaimed with
\ccode{sexp_destroy_context}.
}}
\item{\ccode{sexp_make_eval_context(sexp ctx, sexp stack, sexp env, sexp_uint_t size, sexp_uint_t max_size)}
@ -472,7 +477,8 @@ the default context environment is used. Any of the \ctype{FILE*} may
be \cvar{NULL}, in which case the corresponding port is not set. If
\var{leave_open} is true, then the underlying \ctype{FILE*} is left
open after the Scheme port is closed, otherwise they are both closed
together.
together. If you want to reuse these streams from other vms, or from
C, you should specify leave_open.
}}
\item{\ccode{sexp_load(sexp ctx, sexp file, sexp env)}