From fb49cd19887e45e1118b9a3b09f582305c842e4b Mon Sep 17 00:00:00 2001
From: Pieter Noordhuis <pcnoordhuis@gmail.com>
Date: Tue, 23 Nov 2010 15:55:27 +0100
Subject: Make the libev adapter work without support for multiple event loops

---
 adapters/libev.h | 38 +++++++++++++++++++++++++++++---------
 example-libev.c  |  5 ++---
 2 files changed, 31 insertions(+), 12 deletions(-)

diff --git a/adapters/libev.h b/adapters/libev.h
index 9e28bc4..8a2a4f3 100644
--- a/adapters/libev.h
+++ b/adapters/libev.h
@@ -10,47 +10,63 @@ typedef struct redisLibevEvents {
     ev_io rev, wev;
 } redisLibevEvents;
 
-void redisLibevReadEvent(struct ev_loop *loop, ev_io *watcher, int revents) {
-    ((void)loop); ((void)revents);
+void redisLibevReadEvent(EV_P_ ev_io *watcher, int revents) {
+#if EV_MULTIPLICITY
+    ((void)loop);
+#endif
+    ((void)revents);
+
     redisLibevEvents *e = (redisLibevEvents*)watcher->data;
     redisAsyncHandleRead(e->context);
 }
 
-void redisLibevWriteEvent(struct ev_loop *loop, ev_io *watcher, int revents) {
-    ((void)loop); ((void)revents);
+void redisLibevWriteEvent(EV_P_ ev_io *watcher, int revents) {
+#if EV_MULTIPLICITY
+    ((void)loop);
+#endif
+    ((void)revents);
+
     redisLibevEvents *e = (redisLibevEvents*)watcher->data;
     redisAsyncHandleWrite(e->context);
 }
 
 void redisLibevAddRead(void *privdata) {
     redisLibevEvents *e = (redisLibevEvents*)privdata;
+    struct ev_loop *loop = e->loop;
+    ((void)loop);
     if (!e->reading) {
         e->reading = 1;
-        ev_io_start(e->loop,&e->rev);
+        ev_io_start(EV_A_ &e->rev);
     }
 }
 
 void redisLibevDelRead(void *privdata) {
     redisLibevEvents *e = (redisLibevEvents*)privdata;
+    struct ev_loop *loop = e->loop;
+    ((void)loop);
     if (e->reading) {
         e->reading = 0;
-        ev_io_stop(e->loop,&e->rev);
+        ev_io_stop(EV_A_ &e->rev);
     }
 }
 
 void redisLibevAddWrite(void *privdata) {
     redisLibevEvents *e = (redisLibevEvents*)privdata;
+    struct ev_loop *loop = e->loop;
+    ((void)loop);
     if (!e->writing) {
         e->writing = 1;
-        ev_io_start(e->loop,&e->wev);
+        ev_io_start(EV_A_ &e->wev);
     }
 }
 
 void redisLibevDelWrite(void *privdata) {
     redisLibevEvents *e = (redisLibevEvents*)privdata;
+    struct ev_loop *loop = e->loop;
+    ((void)loop);
     if (e->writing) {
         e->writing = 0;
-        ev_io_stop(e->loop,&e->wev);
+        ev_io_stop(EV_A_ &e->wev);
     }
 }
 
@@ -61,7 +77,7 @@ void redisLibevCleanup(void *privdata) {
     free(e);
 }
 
-int redisLibevAttach(redisAsyncContext *ac, struct ev_loop *loop) {
+int redisLibevAttach(EV_P_ redisAsyncContext *ac) {
     redisContext *c = &(ac->c);
     redisLibevEvents *e;
 
@@ -72,7 +88,11 @@ int redisLibevAttach(redisAsyncContext *ac, struct ev_loop *loop) {
     /* Create container for context and r/w events */
     e = (redisLibevEvents*)malloc(sizeof(*e));
     e->context = ac;
+#if EV_MULTIPLICITY
     e->loop = loop;
+#else
+    e->loop = NULL;
+#endif
     e->reading = e->writing = 0;
     e->rev.data = e;
     e->wev.data = e;
diff --git a/example-libev.c b/example-libev.c
index 199d706..ecf8c02 100644
--- a/example-libev.c
+++ b/example-libev.c
@@ -23,7 +23,6 @@ void disconnectCallback(const redisAsyncContext *c, int status) {
 
 int main (int argc, char **argv) {
     signal(SIGPIPE, SIG_IGN);
-    struct ev_loop *loop = ev_default_loop(0);
 
     redisAsyncContext *c = redisAsyncConnect("127.0.0.1", 6379);
     if (c->err) {
@@ -32,10 +31,10 @@ int main (int argc, char **argv) {
         return 1;
     }
 
-    redisLibevAttach(c,loop);
+    redisLibevAttach(EV_DEFAULT_ c);
     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");
-    ev_loop(loop, 0);
+    ev_loop(EV_DEFAULT_ 0);
     return 0;
 }
-- 
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