mirror of
https://github.com/ashinn/chibi-scheme.git
synced 2025-05-20 14:19:18 +02:00
47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
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/* chibi-ffi should probably be able to detect these patterns automatically, */
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/* but for now we manually check two special cases - accept should check for */
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/* EWOULDBLOCK and block on the socket, and listen should automatically make */
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/* sockets non-blocking. */
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sexp sexp_accept (sexp ctx, sexp self, sexp arg0, sexp arg1, sexp arg2) {
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sexp f;
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socklen_t tmp;
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int res;
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if (! sexp_exact_integerp(arg0))
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return sexp_type_exception(ctx, self, SEXP_FIXNUM, arg0);
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if (! (sexp_pointerp(arg1) && (sexp_pointer_tag(arg1) == sexp_type_tag(sexp_sockaddr_type_t))))
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return sexp_type_exception(ctx, self, sexp_type_tag(sexp_sockaddr_type_t), arg1);
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if (! sexp_exact_integerp(arg2))
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return sexp_type_exception(ctx, self, SEXP_FIXNUM, arg2);
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tmp = sexp_sint_value(arg2);
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res = accept(sexp_sint_value(arg0), (struct sockaddr*)sexp_cpointer_value(arg1), &tmp);
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#if SEXP_USE_GREEN_THREADS
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if (res < 0 && errno == EWOULDBLOCK) {
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f = sexp_global(ctx, SEXP_G_THREADS_BLOCKER);
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if (sexp_opcodep(f)) {
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((sexp_proc2)sexp_opcode_func(f))(ctx, f, 1, arg0);
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return sexp_global(ctx, SEXP_G_IO_BLOCK_ERROR);
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}
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}
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#endif
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return sexp_make_integer(ctx, res);
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}
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/* If we're listening on a socket from Scheme, we most likely want it */
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/* to be non-blocking. */
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sexp sexp_listen (sexp ctx, sexp self, sexp arg0, sexp arg1) {
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int fd, res;
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if (! sexp_exact_integerp(arg0))
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return sexp_type_exception(ctx, self, SEXP_FIXNUM, arg0);
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if (! sexp_exact_integerp(arg1))
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return sexp_type_exception(ctx, self, SEXP_FIXNUM, arg1);
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fd = sexp_sint_value(arg0);
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res = listen(fd, sexp_sint_value(arg1));
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#if SEXP_USE_GREEN_THREADS
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if (res >= 0)
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fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK);
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#endif
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return sexp_make_integer(ctx, res);
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}
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