--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/wrk/src/ae_epoll.c	Fri Jan 23 22:38:59 2026 -0800
@@ -0,0 +1,135 @@
+/* Linux epoll(2) based ae.c module
+ *
+ * Copyright (c) 2009-2012, Salvatore Sanfilippo <antirez at gmail dot com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   * Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *   * Neither the name of Redis nor the names of its contributors may be used
+ *     to endorse or promote products derived from this software without
+ *     specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include <sys/epoll.h>
+
+typedef struct aeApiState {
+    int epfd;
+    struct epoll_event *events;
+} aeApiState;
+
+static int aeApiCreate(aeEventLoop *eventLoop) {
+    aeApiState *state = zmalloc(sizeof(aeApiState));
+
+    if (!state) return -1;
+    state->events = zmalloc(sizeof(struct epoll_event)*eventLoop->setsize);
+    if (!state->events) {
+        zfree(state);
+        return -1;
+    }
+    state->epfd = epoll_create(1024); /* 1024 is just a hint for the kernel */
+    if (state->epfd == -1) {
+        zfree(state->events);
+        zfree(state);
+        return -1;
+    }
+    eventLoop->apidata = state;
+    return 0;
+}
+
+static int aeApiResize(aeEventLoop *eventLoop, int setsize) {
+    aeApiState *state = eventLoop->apidata;
+
+    state->events = zrealloc(state->events, sizeof(struct epoll_event)*setsize);
+    return 0;
+}
+
+static void aeApiFree(aeEventLoop *eventLoop) {
+    aeApiState *state = eventLoop->apidata;
+
+    close(state->epfd);
+    zfree(state->events);
+    zfree(state);
+}
+
+static int aeApiAddEvent(aeEventLoop *eventLoop, int fd, int mask) {
+    aeApiState *state = eventLoop->apidata;
+    struct epoll_event ee = {0}; /* avoid valgrind warning */
+    /* If the fd was already monitored for some event, we need a MOD
+     * operation. Otherwise we need an ADD operation. */
+    int op = eventLoop->events[fd].mask == AE_NONE ?
+            EPOLL_CTL_ADD : EPOLL_CTL_MOD;
+
+    ee.events = 0;
+    mask |= eventLoop->events[fd].mask; /* Merge old events */
+    if (mask & AE_READABLE) ee.events |= EPOLLIN;
+    if (mask & AE_WRITABLE) ee.events |= EPOLLOUT;
+    ee.data.fd = fd;
+    if (epoll_ctl(state->epfd,op,fd,&ee) == -1) return -1;
+    return 0;
+}
+
+static void aeApiDelEvent(aeEventLoop *eventLoop, int fd, int delmask) {
+    aeApiState *state = eventLoop->apidata;
+    struct epoll_event ee = {0}; /* avoid valgrind warning */
+    int mask = eventLoop->events[fd].mask & (~delmask);
+
+    ee.events = 0;
+    if (mask & AE_READABLE) ee.events |= EPOLLIN;
+    if (mask & AE_WRITABLE) ee.events |= EPOLLOUT;
+    ee.data.fd = fd;
+    if (mask != AE_NONE) {
+        epoll_ctl(state->epfd,EPOLL_CTL_MOD,fd,&ee);
+    } else {
+        /* Note, Kernel < 2.6.9 requires a non null event pointer even for
+         * EPOLL_CTL_DEL. */
+        epoll_ctl(state->epfd,EPOLL_CTL_DEL,fd,&ee);
+    }
+}
+
+static int aeApiPoll(aeEventLoop *eventLoop, struct timeval *tvp) {
+    aeApiState *state = eventLoop->apidata;
+    int retval, numevents = 0;
+
+    retval = epoll_wait(state->epfd,state->events,eventLoop->setsize,
+            tvp ? (tvp->tv_sec*1000 + tvp->tv_usec/1000) : -1);
+    if (retval > 0) {
+        int j;
+
+        numevents = retval;
+        for (j = 0; j < numevents; j++) {
+            int mask = 0;
+            struct epoll_event *e = state->events+j;
+
+            if (e->events & EPOLLIN) mask |= AE_READABLE;
+            if (e->events & EPOLLOUT) mask |= AE_WRITABLE;
+            if (e->events & EPOLLERR) mask |= AE_WRITABLE;
+            if (e->events & EPOLLHUP) mask |= AE_WRITABLE;
+            eventLoop->fired[j].fd = e->data.fd;
+            eventLoop->fired[j].mask = mask;
+        }
+    }
+    return numevents;
+}
+
+static char *aeApiName(void) {
+    return "epoll";
+}