mirror of
https://github.com/ashinn/chibi-scheme.git
synced 2025-05-19 21:59:17 +02:00
8b5eb68238
They can be close()d explicitly with close-file-descriptor, and will close() on gc, but only explicitly closing the last port on them will close the fileno. Notably needed for network sockets where we open separate input and output ports on the same socket.
35 lines
1.4 KiB
C
35 lines
1.4 KiB
C
/* rest.c -- low-level utilities for VM rest optimization */
|
|
/* Copyright (c) 2011 Alex Shinn. All rights reserved. */
|
|
/* BSD-style license: http://synthcode.com/license.txt */
|
|
|
|
#include <chibi/eval.h>
|
|
|
|
static sexp sexp_num_parameters (sexp ctx, sexp self, sexp_sint_t n) {
|
|
return sexp_stack_data(sexp_context_stack(ctx))[sexp_context_last_fp(ctx)];
|
|
}
|
|
|
|
struct sexp_opcode_struct local_ref_op =
|
|
{SEXP_OPC_GENERIC, SEXP_OP_LOCAL_REF, 1, 8, 0, (sexp)"local-ref", SEXP_VOID,
|
|
NULL, NULL, sexp_make_fixnum(SEXP_OBJECT), sexp_make_fixnum(SEXP_FIXNUM),
|
|
0, 0, NULL};
|
|
|
|
static sexp copy_opcode (sexp ctx, struct sexp_opcode_struct *op) {
|
|
sexp res = sexp_alloc_type(ctx, opcode, SEXP_OPCODE);
|
|
memcpy(&(res->value), op, sizeof(op[0]));
|
|
return res;
|
|
}
|
|
|
|
sexp sexp_init_library (sexp ctx, sexp self, sexp_sint_t n, sexp env, const char* version, sexp_abi_identifier_t abi) {
|
|
sexp_gc_var2(name, op);
|
|
if (!(sexp_version_compatible(ctx, version, sexp_version)
|
|
&& sexp_abi_compatible(ctx, abi, SEXP_ABI_IDENTIFIER)))
|
|
return SEXP_ABI_ERROR;
|
|
sexp_gc_preserve2(ctx, name, op);
|
|
sexp_define_foreign(ctx, env, "num-parameters", 0, sexp_num_parameters);
|
|
op = copy_opcode(ctx, &local_ref_op);
|
|
sexp_opcode_name(op) = sexp_c_string(ctx, (char*)sexp_opcode_name(op), -1);
|
|
name = sexp_string_to_symbol(ctx, sexp_opcode_name(op));
|
|
sexp_env_define(ctx, env, name, op);
|
|
sexp_gc_release2(ctx);
|
|
return SEXP_VOID;
|
|
}
|