rename and simplification

1 files changed, 0 insertions, 429 deletions

diff --git a/src/common/loop.c b/src/common/loop.c
deleted file mode 100644
index 1c6a612..0000000
--- a/src/common/loop.c
+++ /dev/null
@@ -1,429 +0,0 @@
-#define _GNU_SOURCE
-#define _POSIX_C_SOURCE 200809L
-#include "loop.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <poll.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-
-#define YASL_LOOP_INIT_CAP 32
-
-typedef int (*yasl_loop_fd_fn)(int fd, short revents, void *ud);
-
-struct yasl_fd_source {
-    yasl_loop_fd_fn fn;
-    void *ud;
-    int id;
-    int fd;
-    short events;
-};
-
-struct yasl_timer_source {
-    yasl_timer_cb fn;
-    void *ud;
-    uint64_t interval_ns;
-    uint64_t deadline_ns;
-    yasl_timer_id id;
-    bool deleted;
-};
-
-struct yasl_loop {
-    struct yasl_fd_source *fds;
-    struct pollfd *pollfds;
-    int count;
-    int capacity;
-    int next_id;
-    bool running;
-    int wake_rfd;
-    int wake_wfd;
-    int wake_watch;
-
-    struct yasl_timer_source *timers;
-    int timer_count;
-    int timer_capacity;
-    uint32_t next_timer_id;
-    int timer_firing_depth;
-};
-
-uint64_t yasl_loop_now_ns(void)
-{
-    struct timespec ts;
-    clock_gettime(CLOCK_MONOTONIC, &ts);
-    return (uint64_t)ts.tv_sec * 1000000000ull + (uint64_t)ts.tv_nsec;
-}
-
-static int loop_wake_cb(int fd, short revents, void *ud)
-{
-    (void)revents;
-    (void)ud;
-    char buf[128];
-    ssize_t n;
-    while ((n = read(fd, buf, sizeof(buf))) > 0 || (n < 0 && errno == EINTR)) {}
-    return 0;
-}
-
-struct yasl_loop *yasl_loop_create(void)
-{
-    struct yasl_loop *l = calloc(1, sizeof(*l));
-    if (!l) return NULL;
-
-    l->capacity = YASL_LOOP_INIT_CAP;
-    l->fds = malloc((size_t)l->capacity * sizeof(*l->fds));
-    l->pollfds = malloc((size_t)l->capacity * sizeof(*l->pollfds));
-    if (!l->fds || !l->pollfds) {
-        free(l->fds);
-        free(l->pollfds);
-        free(l);
-        return NULL;
-    }
-
-    l->next_id = 1;
-    l->next_timer_id = 1;
-    l->wake_rfd = -1;
-    l->wake_wfd = -1;
-
-    int p[2];
-#if defined(__linux__) && defined(O_CLOEXEC)
-    if (pipe2(p, O_CLOEXEC | O_NONBLOCK) == 0) {
-        l->wake_rfd = p[0];
-        l->wake_wfd = p[1];
-    }
-#else
-    if (pipe(p) == 0) {
-        int f0 = fcntl(p[0], F_GETFL, 0);
-        int f1 = fcntl(p[1], F_GETFL, 0);
-        if (f0 >= 0) fcntl(p[0], F_SETFL, f0 | O_NONBLOCK);
-        if (f1 >= 0) fcntl(p[1], F_SETFL, f1 | O_NONBLOCK);
-        fcntl(p[0], F_SETFD, FD_CLOEXEC);
-        fcntl(p[1], F_SETFD, FD_CLOEXEC);
-        l->wake_rfd = p[0];
-        l->wake_wfd = p[1];
-    }
-#endif
-
-    if (l->wake_rfd >= 0) {
-        l->wake_watch = yasl_loop_add_fd(l, l->wake_rfd, POLLIN, loop_wake_cb, l);
-    }
-    return l;
-}
-
-void yasl_loop_destroy(struct yasl_loop *l)
-{
-    if (!l) return;
-    if (l->wake_watch > 0)
-        yasl_loop_del_fd(l, l->wake_watch);
-    if (l->wake_rfd >= 0)
-        close(l->wake_rfd);
-    if (l->wake_wfd >= 0)
-        close(l->wake_wfd);
-    free(l->fds);
-    free(l->pollfds);
-    free(l->timers);
-    free(l);
-}
-
-int yasl_loop_add_fd(struct yasl_loop *l, int fd, short events,
-                     int (*fn)(int fd, short revents, void *ud), void *ud)
-{
-    if (!l || fd < 0)
-        return -1;
-
-    if (l->count >= l->capacity) {
-        int new_cap = l->capacity ? l->capacity * 2 : YASL_LOOP_INIT_CAP;
-        struct yasl_fd_source *new_fds = realloc(l->fds, (size_t)new_cap * sizeof(*new_fds));
-        if (!new_fds) return -1;
-        l->fds = new_fds;
-
-        struct pollfd *new_pollfds = realloc(l->pollfds, (size_t)new_cap * sizeof(*new_pollfds));
-        if (!new_pollfds) return -1;
-        l->pollfds = new_pollfds;
-        l->capacity = new_cap;
-    }
-
-    int id = l->next_id++;
-    if (l->next_id <= 0) l->next_id = 1;
-
-    l->fds[l->count] = (struct yasl_fd_source){
-        .fn = fn, .ud = ud, .id = id, .fd = fd, .events = events,
-    };
-    l->pollfds[l->count] = (struct pollfd){
-        .fd = fd, .events = events, .revents = 0,
-    };
-    l->count++;
-    return id;
-}
-
-int yasl_loop_del_fd(struct yasl_loop *l, int id)
-{
-    if (!l || id <= 0) return -1;
-    for (int i = 0; i < l->count; i++) {
-        if (l->fds[i].id == id) {
-            l->count--;
-            l->fds[i] = l->fds[l->count];
-            l->pollfds[i] = l->pollfds[l->count];
-            return 0;
-        }
-    }
-    return -1;
-}
-
-int yasl_loop_set_fd_events(struct yasl_loop *l, int id, short events)
-{
-    if (!l || id <= 0) return -1;
-    for (int i = 0; i < l->count; i++) {
-        if (l->fds[i].id == id) {
-            l->fds[i].events = events;
-            l->pollfds[i].events = events;
-            return 0;
-        }
-    }
-    return -1;
-}
-
-void yasl_loop_kick(struct yasl_loop *l)
-{
-    if (!l || l->wake_wfd < 0) return;
-    char b = 1;
-    ssize_t n;
-    do {
-        n = write(l->wake_wfd, &b, 1);
-    } while (n < 0 && errno == EINTR);
-}
-
-static void timer_cleanup_deleted(struct yasl_loop *l)
-{
-    if (!l || l->timer_firing_depth > 0) return;
-    int dest = 0;
-    for (int src = 0; src < l->timer_count; src++) {
-        struct yasl_timer_source t = l->timers[src];
-        l->timers[dest] = t;
-        dest += !t.deleted;
-    }
-    l->timer_count = dest;
-}
-
-bool yasl_loop_timer_armed(const struct yasl_loop *l, yasl_timer_id id)
-{
-    if (!l || id == 0) return false;
-    for (int i = 0; i < l->timer_count; i++)
-        if (l->timers[i].id == id)
-            return !l->timers[i].deleted;
-    return false;
-}
-
-int yasl_loop_next_timeout_ms(const struct yasl_loop *l)
-{
-    if (!l || l->timer_count <= 0) return -1;
-    uint64_t now = yasl_loop_now_ns();
-    uint64_t min_deadline = UINT64_MAX;
-    bool has_active = false;
-    for (int i = 0; i < l->timer_count; i++) {
-        if (!l->timers[i].deleted) {
-            has_active = true;
-            if (l->timers[i].deadline_ns < min_deadline)
-                min_deadline = l->timers[i].deadline_ns;
-        }
-    }
-    if (!has_active) return -1;
-    if (min_deadline <= now) return 0;
-    uint64_t diff = min_deadline - now;
-    uint64_t ms = (diff + 999999ull) / 1000000ull;
-    return (ms > (uint64_t)INT_MAX) ? INT_MAX : (int)ms;
-}
-
-yasl_timer_id yasl_loop_add_timer(struct yasl_loop *l, uint64_t interval_ns,
-                                  yasl_timer_cb cb, void *ud)
-{
-    if (!l || !cb || interval_ns == 0) return 0;
-
-    if (l->timer_count >= l->timer_capacity) {
-        int new_cap = l->timer_capacity ? l->timer_capacity * 2 : 16;
-        struct yasl_timer_source *new_timers = realloc(l->timers, (size_t)new_cap * sizeof(*new_timers));
-        if (!new_timers) return 0;
-        l->timers = new_timers;
-        l->timer_capacity = new_cap;
-    }
-
-    uint32_t id = l->next_timer_id++;
-    if (l->next_timer_id == 0) l->next_timer_id = 1;
-
-    uint64_t now = yasl_loop_now_ns();
-    l->timers[l->timer_count++] = (struct yasl_timer_source){
-        .fn = cb,
-        .ud = ud,
-        .id = id,
-        .interval_ns = interval_ns,
-        .deadline_ns = now + interval_ns,
-        .deleted = false,
-    };
-
-    yasl_loop_kick(l);
-    return id;
-}
-
-bool yasl_loop_del_timer(struct yasl_loop *l, yasl_timer_id id)
-{
-    if (!l || id == 0) return false;
-    for (int i = l->timer_count - 1; i >= 0; i--) {
-        if (l->timers[i].id == id && !l->timers[i].deleted) {
-            l->timers[i].deleted = true;
-            if (l->timer_firing_depth == 0) {
-                if (i == l->timer_count - 1) {
-                    while (l->timer_count > 0 && l->timers[l->timer_count - 1].deleted)
-                        l->timer_count--;
-                } else {
-                    timer_cleanup_deleted(l);
-                }
-            }
-            return true;
-        }
-    }
-    return false;
-}
-
-int yasl_loop_step(struct yasl_loop *l, int timeout_ms)
-{
-    if (!l) return -1;
-
-    int timer_to = yasl_loop_next_timeout_ms(l);
-    int effective_timeout = timeout_ms;
-    if (timer_to >= 0) {
-        if (effective_timeout < 0 || timer_to < effective_timeout)
-            effective_timeout = timer_to;
-    }
-
-    if (l->count <= 0) {
-        if (effective_timeout > 0) {
-            struct timespec req = {
-                .tv_sec = effective_timeout / 1000,
-                .tv_nsec = (long)(effective_timeout % 1000) * 1000000L,
-            };
-            nanosleep(&req, NULL);
-        }
-    } else {
-        int n;
-        do {
-            n = poll(l->pollfds, (nfds_t)l->count, effective_timeout);
-        } while (n < 0 && errno == EINTR);
-
-        if (n < 0) return -1;
-    }
-
-    int handled = 0;
-
-    if (l->count > 0) {
-        int count = l->count;
-        struct yasl_fd_source sstack[32];
-        struct pollfd pstack[32];
-        struct yasl_fd_source *scopy = (count <= 32) ? sstack : malloc((size_t)count * sizeof(*scopy));
-        struct pollfd *pcopy = (count <= 32) ? pstack : malloc((size_t)count * sizeof(*pcopy));
-        if (!scopy || !pcopy) {
-            if (scopy && scopy != sstack) free(scopy);
-            if (pcopy && pcopy != pstack) free(pcopy);
-            return -1;
-        }
-
-        memcpy(scopy, l->fds, (size_t)count * sizeof(*scopy));
-        memcpy(pcopy, l->pollfds, (size_t)count * sizeof(*pcopy));
-
-        for (int i = 0; i < count; i++) {
-            if (pcopy[i].revents) {
-                short revents = pcopy[i].revents;
-                // Fast-path: check if source is still at index i before linear scan
-                bool valid = false;
-                if (i < l->count && l->fds[i].id == scopy[i].id) {
-                    l->pollfds[i].revents = 0;
-                    valid = true;
-                } else {
-                    for (int j = 0; j < l->count; j++) {
-                        if (l->fds[j].id == scopy[i].id) {
-                            l->pollfds[j].revents = 0;
-                            valid = true;
-                            break;
-                        }
-                    }
-                }
-                if (valid && scopy[i].fn) {
-                    scopy[i].fn(scopy[i].fd, revents, scopy[i].ud);
-                    handled++;
-                }
-            }
-        }
-
-        if (scopy != sstack) free(scopy);
-        if (pcopy != pstack) free(pcopy);
-    }
-
-    if (l->timer_count > 0) {
-        uint64_t now = yasl_loop_now_ns();
-        l->timer_firing_depth++;
-        int initial_count = l->timer_count;
-        for (int i = 0; i < initial_count; i++) {
-            if (i >= l->timer_count) break;
-            if (l->timers[i].deleted || l->timers[i].deadline_ns > now)
-                continue;
-
-            yasl_timer_id tid = l->timers[i].id;
-            uint64_t interval = l->timers[i].interval_ns;
-            void *ud = l->timers[i].ud;
-            struct yasl_timer_source timer_src = l->timers[i];
-
-            uint64_t next_interval = timer_src.fn(ud, tid, interval);
-            handled++;
-
-            // Fast-path: timer is usually still at index i unless an earlier timer was deleted
-            if (i < l->timer_count && l->timers[i].id == tid) {
-                if (next_interval == 0 || l->timers[i].deleted) {
-                    l->timers[i].deleted = true;
-                } else {
-                    l->timers[i].interval_ns = next_interval;
-                    if (l->timers[i].deadline_ns + next_interval > now)
-                        l->timers[i].deadline_ns += next_interval;
-                    else
-                        l->timers[i].deadline_ns = now + next_interval;
-                }
-            } else {
-                for (int j = 0; j < l->timer_count; j++) {
-                    if (l->timers[j].id == tid) {
-                        if (next_interval == 0 || l->timers[j].deleted) {
-                            l->timers[j].deleted = true;
-                        } else {
-                            l->timers[j].interval_ns = next_interval;
-                            if (l->timers[j].deadline_ns + next_interval > now)
-                                l->timers[j].deadline_ns += next_interval;
-                            else
-                                l->timers[j].deadline_ns = now + next_interval;
-                        }
-                        break;
-                    }
-                }
-            }
-        }
-        l->timer_firing_depth--;
-        if (l->timer_firing_depth == 0) {
-            timer_cleanup_deleted(l);
-        }
-    }
-
-    return handled;
-}
-
-int yasl_loop_run(struct yasl_loop *l)
-{
-    if (!l) return -1;
-    l->running = true;
-    while (l->running) {
-        if (yasl_loop_step(l, -1) < 0)
-            return -1;
-    }
-    return 0;
-}
-
-void yasl_loop_quit(struct yasl_loop *l)
-{
-    if (l) l->running = false;
-}