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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.
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/* param.c -- low-level parameter utilities */
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/* Copyright (c) 2010-2011 Alex Shinn. All rights reserved. */
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/* BSD-style license: http://synthcode.com/license.txt */
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#include <chibi/eval.h>
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#define _I(x) sexp_make_fixnum(x)
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static sexp sexp_make_parameter (sexp ctx, sexp self, sexp_sint_t n, sexp init, sexp conv) {
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sexp res;
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sexp_gc_var1(cell);
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sexp_gc_preserve1(ctx, cell);
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cell = sexp_cons(ctx, SEXP_FALSE, init);
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res = sexp_make_opcode(ctx, self, SEXP_FALSE, _I(SEXP_OPC_PARAMETER),
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_I(SEXP_OP_PARAMETER_REF), SEXP_ZERO, SEXP_ONE,
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_I(SEXP_OBJECT), _I(SEXP_OBJECT), SEXP_ZERO,
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cell, conv, NULL);
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sexp_gc_release1(ctx);
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return res;
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}
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static sexp sexp_parameter_converter (sexp ctx, sexp self, sexp_sint_t n, sexp param) {
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sexp res;
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sexp_assert_type(ctx, sexp_opcodep, SEXP_OPCODE, param);
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res = sexp_opcode_data2(param);
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return res ? res : SEXP_FALSE;
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}
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sexp sexp_init_library (sexp ctx, sexp self, sexp_sint_t n, sexp env, const char* version, sexp_abi_identifier_t abi) {
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if (!(sexp_version_compatible(ctx, version, sexp_version)
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&& sexp_abi_compatible(ctx, abi, SEXP_ABI_IDENTIFIER)))
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return SEXP_ABI_ERROR;
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sexp_define_foreign(ctx, env, "%make-parameter", 2, sexp_make_parameter);
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sexp_define_foreign(ctx, env, "parameter-converter", 1, sexp_parameter_converter);
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return SEXP_VOID;
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}
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#undef _I
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