hanez/fun
1
0
Fork 0
forked from fun/fun
Code Pull requests Activity

Added some basic asyncio stuff. (0.39.12)

Browse source
This commit is contained in:
Johannes Findeisen 2026-03-27 00:44:40 +01:00
commit cb3eb0a498
9 changed files with 328 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

50
src/vm/os/fd_poll_read.c Normal file
View file

@ -0,0 +1,50 @@
/**
* This file is part of the Fun programming language.
* https://fun-lang.xyz/
*
* Copyright 2026 Johannes Findeisen <you@hanez.org>
* Licensed under the terms of the Apache-2.0 license.
* https://opensource.org/license/apache-2-0
*
* Added: 2026-03-26
*/
case OP_FD_POLL_READ: {
/* Pops timeout_ms:int, fd:int; pushes 1 if readable, 0 on timeout/EOF, -1 on error */
Value to = pop_value(vm);
Value fdv = pop_value(vm);
int rc = -1;
#ifdef __unix__
if (fdv.type != VAL_INT || to.type != VAL_INT) {
fprintf(stderr, "Runtime type error: fd_poll_read expects (int fd, int timeout_ms)\n");
rc = -1;
} else {
int fd = (int)fdv.i;
int timeout_ms = (int)to.i;
struct pollfd pfd;
pfd.fd = fd;
pfd.events = POLLIN;
pfd.revents = 0;
int pr = poll(&pfd, 1, timeout_ms);
if (pr > 0) {
if (pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
rc = 0; /* treat as not readable / peer closed */
} else if (pfd.revents & POLLIN) {
rc = 1;
} else {
rc = 0;
}
} else if (pr == 0) {
rc = 0; /* timeout */
} else {
rc = -1; /* error */
}
}
#else
(void)to; (void)fdv;
#endif
free_value(to);
free_value(fdv);
push_value(vm, make_int(rc));
break;
}

50
src/vm/os/fd_poll_write.c Normal file
View file

@ -0,0 +1,50 @@
/**
* This file is part of the Fun programming language.
* https://fun-lang.xyz/
*
* Copyright 2026 Johannes Findeisen <you@hanez.org>
* Licensed under the terms of the Apache-2.0 license.
* https://opensource.org/license/apache-2-0
*
* Added: 2026-03-26
*/
case OP_FD_POLL_WRITE: {
/* Pops timeout_ms:int, fd:int; pushes 1 if writable, 0 on timeout, -1 on error */
Value to = pop_value(vm);
Value fdv = pop_value(vm);
int rc = -1;
#ifdef __unix__
if (fdv.type != VAL_INT || to.type != VAL_INT) {
fprintf(stderr, "Runtime type error: fd_poll_write expects (int fd, int timeout_ms)\n");
rc = -1;
} else {
int fd = (int)fdv.i;
int timeout_ms = (int)to.i;
struct pollfd pfd;
pfd.fd = fd;
pfd.events = POLLOUT;
pfd.revents = 0;
int pr = poll(&pfd, 1, timeout_ms);
if (pr > 0) {
if (pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
rc = 0; /* treat as not writable */
} else if (pfd.revents & POLLOUT) {
rc = 1;
} else {
rc = 0;
}
} else if (pr == 0) {
rc = 0; /* timeout */
} else {
rc = -1; /* error */
}
}
#else
(void)to; (void)fdv;
#endif
free_value(to);
free_value(fdv);
push_value(vm, make_int(rc));
break;
}

40
src/vm/os/fd_set_nonblock.c Normal file
View file

@ -0,0 +1,40 @@
/**
* This file is part of the Fun programming language.
* https://fun-lang.xyz/
*
* Copyright 2026 Johannes Findeisen <you@hanez.org>
* Licensed under the terms of the Apache-2.0 license.
* https://opensource.org/license/apache-2-0
*
* Added: 2026-03-26
*/
case OP_FD_SET_NONBLOCK: {
/* Pops on:int (0/1), fd:int; pushes 1 on success, 0 on error/unsupported */
Value onv = pop_value(vm);
Value fdv = pop_value(vm);
int ok = 0;
#ifdef __unix__
if (fdv.type != VAL_INT || onv.type != VAL_INT) {
fprintf(stderr, "Runtime type error: fd_set_nonblock expects (int fd, int on)\n");
ok = 0;
} else {
int fd = (int)fdv.i;
int on = (int)onv.i;
int flags = fcntl(fd, F_GETFL, 0);
if (flags >= 0) {
if (on)
flags |= O_NONBLOCK;
else
flags &= ~O_NONBLOCK;
if (fcntl(fd, F_SETFL, flags) == 0) ok = 1;
}
}
#else
(void)onv; (void)fdv;
#endif
free_value(onv);
free_value(fdv);
push_value(vm, make_int(ok ? 1 : 0));
break;
}