1 files changed, 171 insertions, 0 deletions
diff --git a/deps/hiredis/adapters/libuv.h b/deps/hiredis/adapters/libuv.h
new file mode 100644
index 0000000..268edab
--- /dev/null
+++ b/deps/hiredis/adapters/libuv.h
@@ -0,0 +1,171 @@
+#ifndef __HIREDIS_LIBUV_H__
+#define __HIREDIS_LIBUV_H__
+#include <stdlib.h>
+#include <uv.h>
+#include "../hiredis.h"
+#include "../async.h"
+#include <string.h>
+
+typedef struct redisLibuvEvents {
+    redisAsyncContext* context;
+    uv_poll_t          handle;
+    uv_timer_t         timer;
+    int                events;
+} redisLibuvEvents;
+
+
+static void redisLibuvPoll(uv_poll_t* handle, int status, int events) {
+    redisLibuvEvents* p = (redisLibuvEvents*)handle->data;
+    int ev = (status ? p->events : events);
+
+    if (p->context != NULL && (ev & UV_READABLE)) {
+        redisAsyncHandleRead(p->context);
+    }
+    if (p->context != NULL && (ev & UV_WRITABLE)) {
+        redisAsyncHandleWrite(p->context);
+    }
+}
+
+
+static void redisLibuvAddRead(void *privdata) {
+    redisLibuvEvents* p = (redisLibuvEvents*)privdata;
+
+    if (p->events & UV_READABLE) {
+        return;
+    }
+
+    p->events |= UV_READABLE;
+
+    uv_poll_start(&p->handle, p->events, redisLibuvPoll);
+}
+
+
+static void redisLibuvDelRead(void *privdata) {
+    redisLibuvEvents* p = (redisLibuvEvents*)privdata;
+
+    p->events &= ~UV_READABLE;
+
+    if (p->events) {
+        uv_poll_start(&p->handle, p->events, redisLibuvPoll);
+    } else {
+        uv_poll_stop(&p->handle);
+    }
+}
+
+
+static void redisLibuvAddWrite(void *privdata) {
+    redisLibuvEvents* p = (redisLibuvEvents*)privdata;
+
+    if (p->events & UV_WRITABLE) {
+        return;
+    }
+
+    p->events |= UV_WRITABLE;
+
+    uv_poll_start(&p->handle, p->events, redisLibuvPoll);
+}
+
+
+static void redisLibuvDelWrite(void *privdata) {
+    redisLibuvEvents* p = (redisLibuvEvents*)privdata;
+
+    p->events &= ~UV_WRITABLE;
+
+    if (p->events) {
+        uv_poll_start(&p->handle, p->events, redisLibuvPoll);
+    } else {
+        uv_poll_stop(&p->handle);
+    }
+}
+
+static void on_timer_close(uv_handle_t *handle) {
+    redisLibuvEvents* p = (redisLibuvEvents*)handle->data;
+    p->timer.data = NULL;
+    if (!p->handle.data) {
+        // both timer and handle are closed
+        hi_free(p);
+    }
+    // else, wait for `on_handle_close`
+}
+
+static void on_handle_close(uv_handle_t *handle) {
+    redisLibuvEvents* p = (redisLibuvEvents*)handle->data;
+    p->handle.data = NULL;
+    if (!p->timer.data) {
+        // timer never started, or timer already destroyed
+        hi_free(p);
+    }
+    // else, wait for `on_timer_close`
+}
+
+// libuv removed `status` parameter since v0.11.23
+// see: https://github.com/libuv/libuv/blob/v0.11.23/include/uv.h
+#if (UV_VERSION_MAJOR == 0 && UV_VERSION_MINOR < 11) || \
+    (UV_VERSION_MAJOR == 0 && UV_VERSION_MINOR == 11 && UV_VERSION_PATCH < 23)
+static void redisLibuvTimeout(uv_timer_t *timer, int status) {
+    (void)status; // unused
+#else
+static void redisLibuvTimeout(uv_timer_t *timer) {
+#endif
+    redisLibuvEvents *e = (redisLibuvEvents*)timer->data;
+    redisAsyncHandleTimeout(e->context);
+}
+
+static void redisLibuvSetTimeout(void *privdata, struct timeval tv) {
+    redisLibuvEvents* p = (redisLibuvEvents*)privdata;
+
+    uint64_t millsec = tv.tv_sec * 1000 + tv.tv_usec / 1000.0;
+    if (!p->timer.data) {
+        // timer is uninitialized
+        if (uv_timer_init(p->handle.loop, &p->timer) != 0) {
+            return;
+        }
+        p->timer.data = p;
+    }
+    // updates the timeout if the timer has already started
+    // or start the timer
+    uv_timer_start(&p->timer, redisLibuvTimeout, millsec, 0);
+}
+
+static void redisLibuvCleanup(void *privdata) {
+    redisLibuvEvents* p = (redisLibuvEvents*)privdata;
+
+    p->context = NULL; // indicate that context might no longer exist
+    if (p->timer.data) {
+        uv_close((uv_handle_t*)&p->timer, on_timer_close);
+    }
+    uv_close((uv_handle_t*)&p->handle, on_handle_close);
+}
+
+
+static int redisLibuvAttach(redisAsyncContext* ac, uv_loop_t* loop) {
+    redisContext *c = &(ac->c);
+
+    if (ac->ev.data != NULL) {
+        return REDIS_ERR;
+    }
+
+    ac->ev.addRead        = redisLibuvAddRead;
+    ac->ev.delRead        = redisLibuvDelRead;
+    ac->ev.addWrite       = redisLibuvAddWrite;
+    ac->ev.delWrite       = redisLibuvDelWrite;
+    ac->ev.cleanup        = redisLibuvCleanup;
+    ac->ev.scheduleTimer  = redisLibuvSetTimeout;
+
+    redisLibuvEvents* p = (redisLibuvEvents*)hi_malloc(sizeof(*p));
+    if (p == NULL)
+        return REDIS_ERR;
+
+    memset(p, 0, sizeof(*p));
+
+    if (uv_poll_init_socket(loop, &p->handle, c->fd) != 0) {
+        return REDIS_ERR;
+    }
+
+    ac->ev.data    = p;
+    p->handle.data = p;
+    p->context     = ac;
+
+    return REDIS_OK;
+}
+#endif