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Diffusion Ant (feature/nursery) Code

ant/src/modules/builtin.c
ddfe6237cab5feature/nursery

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builtin.c
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#include <compat.h> // IWYU pragma: keep
#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#ifdef __APPLE__
#include <mach/mach.h>
#elif defined(__linux__)
#include <sys/resource.h>
#endif
#include "ant.h"
#include "errors.h"
#include "runtime.h"
#include "internal.h"
#include "modules/builtin.h"
#include "modules/buffer.h"
#include "modules/collections.h"
static struct {
struct js *js;
jsval_t handler;
} signal_handlers[NSIG] = {0};
static void general_signal_handler(int signum) {
if (signum < 0 || signum >= NSIG) return;
struct js *js = signal_handlers[signum].js;
jsval_t handler = signal_handlers[signum].handler;
if (js && vtype(handler) != T_UNDEF) {
jsval_t args[] = {js_mknum(signum)};
js_call(js, handler, args, 1);
}
exit(0);
}
// Ant.signal(signal, handler)
static jsval_t js_signal(struct js *js, jsval_t *args, int nargs) {
if (nargs < 2) return js_mkerr(js, "Ant.signal() requires 2 arguments");
int signum = (int)js_getnum(args[0]);
if (signum <= 0 || signum >= NSIG) {
return js_mkerr_typed(js, JS_ERR_RANGE, "Invalid signal number: %d", signum);
}
signal_handlers[signum].js = js;
signal_handlers[signum].handler = args[1];
signal(signum, general_signal_handler);
return js_mkundef();
}
// Ant.gc()
static jsval_t js_gc_trigger(struct js *js, jsval_t *args, int nargs) {
js->needs_gc = true;
return js_mkundef();
}
// Ant.raw.typeof(jsval_t)
static jsval_t js_raw_typeof(struct js *js, jsval_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "Ant.raw.typeof() requires 1 argument");
const uint8_t type = vtype(args[0]);
return js_mknum((double)type);
}
// Ant.sleep(seconds)
static jsval_t js_sleep(struct js *js, jsval_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "Ant.sleep() requires 1 argument");
unsigned int seconds = (unsigned int)js_getnum(args[0]);
sleep(seconds);
return js_mkundef();
}
// Ant.msleep(milliseconds)
static jsval_t js_msleep(struct js *js, jsval_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "Ant.msleep() requires 1 argument");
long ms = (long)js_getnum(args[0]);
struct timespec ts = { .tv_sec = ms / 1000, .tv_nsec = (ms % 1000) * 1000000 };
struct timespec rem;
while (nanosleep(&ts, &rem) == -1 && errno == EINTR) ts = rem;
return js_mkundef();
}
// Ant.usleep(microseconds)
static jsval_t js_usleep(struct js *js, jsval_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "Ant.usleep() requires 1 argument");
useconds_t us = (useconds_t)js_getnum(args[0]);
usleep(us);
return js_mkundef();
}
// Ant.stats()
static jsval_t js_stats_fn(struct js *js, jsval_t *args, int nargs) {
(void) args; (void) nargs;
jsval_t result = js_newobj(js);
js_set(js, result, "arenaUsed", js_mknum((double)js_getbrk(js)));
js_set(js, result, "arenaSize", js_mknum((double)js->size));
size_t buffer_mem = buffer_get_external_memory();
size_t code_mem = code_arena_get_memory();
size_t collections_mem = collections_get_external_memory();
size_t external_total = buffer_mem + code_mem + collections_mem;
jsval_t ext = js_newobj(js);
js_set(js, ext, "buffers", js_mknum((double)buffer_mem));
js_set(js, ext, "code", js_mknum((double)code_mem));
js_set(js, ext, "collections", js_mknum((double)collections_mem));
js_set(js, ext, "total", js_mknum((double)external_total));
js_set(js, result, "external", ext);
if (js->cstk != NULL) {
volatile char marker;
uintptr_t base = (uintptr_t)js->cstk;
uintptr_t curr = (uintptr_t)&marker;
size_t used = (base > curr) ? (base - curr) : (curr - base);
js_set(js, result, "cstack", js_mknum((double)used));
} else js_set(js, result, "cstack", js_mknum(0));
#ifdef __APPLE__
struct mach_task_basic_info info;
mach_msg_type_number_t count = MACH_TASK_BASIC_INFO_COUNT;
if (task_info(mach_task_self(), MACH_TASK_BASIC_INFO, (task_info_t)&info, &count) == KERN_SUCCESS) {
js_set(js, result, "rss", js_mknum((double)info.resident_size));
js_set(js, result, "virtualSize", js_mknum((double)info.virtual_size));
}
#elif defined(__linux__)
struct rusage usage;
if (getrusage(RUSAGE_SELF, &usage) == 0) {
js_set(js, result, "rss", js_mknum((double)usage.ru_maxrss * 1024));
}
#endif
return result;
}
void init_builtin_module() {
struct js *js = rt->js;
jsval_t ant_obj = rt->ant_obj;
js_set(js, ant_obj, "gc", js_mkfun(js_gc_trigger));
js_set(js, ant_obj, "stats", js_mkfun(js_stats_fn));
js_set(js, ant_obj, "signal", js_mkfun(js_signal));
js_set(js, ant_obj, "sleep", js_mkfun(js_sleep));
js_set(js, ant_obj, "msleep", js_mkfun(js_msleep));
js_set(js, ant_obj, "usleep", js_mkfun(js_usleep));
jsval_t raw_obj = js_newobj(js);
js_set(js, raw_obj, "typeof", js_mkfun(js_raw_typeof));
js_set(js, ant_obj, "raw", raw_obj);
}

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