Add adapters/libhv

redis · Sep 7, 2022 · a669167 · a669167
1 parent 855b48a
commit a669167
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diff --git a/adapters/libhv.h b/adapters/libhv.h
@@ -0,0 +1,69 @@
+#ifndef __HIREDIS_LIBHV_H__
+#define __HIREDIS_LIBHV_H__
+
+#include <hv/hloop.h>
+#include "../hiredis.h"
+#include "../async.h"
+
+static void redisLibhvHandleEvents(hio_t* io) {
+    redisAsyncContext* context = (redisAsyncContext*)hevent_userdata(io);
+    int events = hio_events(io);
+    int revents = hio_revents(io);
+    if (context && (events & HV_READ) && (revents & HV_READ)) {
+        redisAsyncHandleRead(context);
+    }
+    if (context && (events & HV_WRITE) && (revents & HV_WRITE)) {
+        redisAsyncHandleWrite(context);
+    }
+}
+
+static void redisLibhvAddRead(void *privdata) {
+    hio_t* io = (hio_t*)privdata;
+    hio_add(io, redisLibhvHandleEvents, HV_READ);
+}
+
+static void redisLibhvDelRead(void *privdata) {
+    hio_t* io = (hio_t*)privdata;
+    hio_del(io, HV_READ);
+}
+
+static void redisLibhvAddWrite(void *privdata) {
+    hio_t* io = (hio_t*)privdata;
+    hio_add(io, redisLibhvHandleEvents, HV_WRITE);
+}
+
+static void redisLibhvDelWrite(void *privdata) {
+    hio_t* io = (hio_t*)privdata;
+    hio_del(io, HV_WRITE);
+}
+
+static void redisLibhvCleanup(void *privdata) {
+    hio_t* io = (hio_t*)privdata;
+    hio_close(io);
+    hevent_set_userdata(io, NULL);
+}
+
+static int redisLibhvAttach(redisAsyncContext* ac, hloop_t* loop) {
+    redisContext *c = &(ac->c);
+    hio_t* io = NULL;
+
+    if (ac->ev.data != NULL) {
+        return REDIS_ERR;
+    }
+
+    io = hio_get(loop, c->fd);
+    if (io == NULL) {
+        return REDIS_ERR;
+    }
+    hevent_set_userdata(io, ac);
+
+    ac->ev.addRead  = redisLibhvAddRead;
+    ac->ev.delRead  = redisLibhvDelRead;
+    ac->ev.addWrite = redisLibhvAddWrite;
+    ac->ev.delWrite = redisLibhvDelWrite;
+    ac->ev.cleanup  = redisLibhvCleanup;
+    ac->ev.data     = io;
+
+    return REDIS_OK;
+}
+#endif
diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
@@ -25,6 +25,12 @@ if (LIBEVENT)
     TARGET_LINK_LIBRARIES(example-libevent hiredis event)
 ENDIF()
 
+FIND_PATH(LIBHV hv/hv.h)
+IF (LIBHV)
+    ADD_EXECUTABLE(example-libhv example-libhv.c)
+    TARGET_LINK_LIBRARIES(example-libhv hiredis hv)
+ENDIF()
+
 FIND_PATH(LIBUV uv.h)
 IF (LIBUV)
     ADD_EXECUTABLE(example-libuv example-libuv.c)

diff --git a/examples/example-libhv.c b/examples/example-libhv.c
@@ -0,0 +1,55 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+
+#include <hiredis.h>
+#include <async.h>
+#include <adapters/libhv.h>
+
+void getCallback(redisAsyncContext *c, void *r, void *privdata) {
+    redisReply *reply = r;
+    if (reply == NULL) return;
+    printf("argv[%s]: %s\n", (char*)privdata, reply->str);
+
+    /* Disconnect after receiving the reply to GET */
+    redisAsyncDisconnect(c);
+}
+
+void connectCallback(const redisAsyncContext *c, int status) {
+    if (status != REDIS_OK) {
+        printf("Error: %s\n", c->errstr);
+        return;
+    }
+    printf("Connected...\n");
+}
+
+void disconnectCallback(const redisAsyncContext *c, int status) {
+    if (status != REDIS_OK) {
+        printf("Error: %s\n", c->errstr);
+        return;
+    }
+    printf("Disconnected...\n");
+}
+
+int main (int argc, char **argv) {
+#ifndef _WIN32
+    signal(SIGPIPE, SIG_IGN);
+#endif
+
+    redisAsyncContext *c = redisAsyncConnect("127.0.0.1", 6379);
+    if (c->err) {
+        /* Let *c leak for now... */
+        printf("Error: %s\n", c->errstr);
+        return 1;
+    }
+
+    hloop_t* loop = hloop_new(HLOOP_FLAG_QUIT_WHEN_NO_ACTIVE_EVENTS);
+    redisLibhvAttach(c, loop);
+    redisAsyncSetConnectCallback(c,connectCallback);
+    redisAsyncSetDisconnectCallback(c,disconnectCallback);
+    redisAsyncCommand(c, NULL, NULL, "SET key %b", argv[argc-1], strlen(argv[argc-1]));
+    redisAsyncCommand(c, getCallback, (char*)"end-1", "GET key");
+    hloop_run(loop);
+    return 0;
+}