build: install ev-emul.h

nodejs · Jun 19, 2012 · f405517 · f405517
1 parent 1df222f
commit f405517
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diff --git a/src/ev-emul.h b/src/ev-emul.h
@@ -0,0 +1,251 @@
+/* Copyright Joyent, Inc. and other Node contributors.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to permit
+ * persons to whom the Software is furnished to do so, subject to the
+ * following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+ * NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef NODE_EV_EMUL_H_
+#define NODE_EV_EMUL_H_
+
+#include "uv.h"
+
+#include <stdio.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#undef ev_init
+#undef ev_set_cb
+#undef ev_set_priority
+#undef ev_is_active
+#undef ev_timer_init
+#undef ev_timer_set
+#undef ev_io_init
+#undef ev_io_set
+
+#undef EV_P
+#undef EV_P_
+#undef EV_A
+#undef EV_A_
+#undef EV_DEFAULT
+#undef EV_DEFAULT_
+#undef EV_DEFAULT_UC
+#undef EV_DEFAULT_UC_
+
+#define EV_P            void
+#define EV_P_
+#define EV_A
+#define EV_A_
+#define EV_DEFAULT
+#define EV_DEFAULT_
+#define EV_DEFAULT_UC
+#define EV_DEFAULT_UC_
+
+#define ev_init(w, cb_)                                                       \
+  do {                                                                        \
+    void* data = (w)->data;                                                   \
+    memset((w), 0, sizeof(*(w)));                                             \
+    (w)->data = data;                                                         \
+    (w)->cb = (cb_);                                                          \
+  }                                                                           \
+  while (0)
+
+#define ev_set_cb(w, cb_)                                                     \
+  do                                                                          \
+    (w)->cb = (cb_);                                                          \
+  while (0)
+
+#define ev_set_priority(...)
+
+#define ev_is_active(w)                                                       \
+  (uv_is_active((uv_handle_t*) &(w)->handle))
+
+#define ev_now(...)                                                           \
+  (uv_hrtime() / 1e9)
+
+#define __uv_container_of(ptr, type, field)                                   \
+  ((type*) ((char*) (ptr) - offsetof(type, field)))
+
+#define __uv_warn_of(old_, new_)                                              \
+  do {                                                                        \
+    if (__uv_warn_##old_) break;                                              \
+    __uv_warn_##old_ = 1;                                                     \
+    fputs("WARNING: " #old_ " is deprecated, use " #new_ "\n", stderr);       \
+  }                                                                           \
+  while (0)
+
+static int __uv_warn_ev_io    __attribute__((unused));
+static int __uv_warn_ev_timer __attribute__((unused));
+static int __uv_warn_ev_ref   __attribute__((unused));
+static int __uv_warn_ev_unref __attribute__((unused));
+
+struct __ev_io;
+typedef struct __ev_io __ev_io;
+typedef void (*__ev_io_cb)(__ev_io*, int);
+
+struct __ev_timer;
+typedef struct __ev_timer __ev_timer;
+typedef void (*__ev_timer_cb)(__ev_timer*, int);
+
+/* Field order matters. Don't touch. */
+struct __ev_io {
+  __ev_io_cb cb;
+  void* data;
+  int flags; /* bit 1 == initialized, yes or no? */
+  uv_poll_t handle;
+  int fd;
+  int events;
+};
+
+/* Field order matters. Don't touch. */
+struct __ev_timer {
+  __ev_timer_cb cb;
+  void* data;
+  int flags;
+  uv_timer_t handle;
+  double delay;
+  double repeat;
+};
+
+
+inline static void __uv_poll_cb(uv_poll_t* handle, int status, int events) {
+  __ev_io* w = __uv_container_of(handle, __ev_io, handle);
+  w->cb(w, events);
+  (void) status;
+}
+
+
+inline static void __uv_timer_cb(uv_timer_t* handle, int status) {
+  __ev_timer* w = __uv_container_of(handle, __ev_timer, handle);
+  w->cb(w, 0);
+  (void) status;
+}
+
+
+inline static void __ev_io_init(__ev_io* w, __ev_io_cb cb, int fd, int events) {
+  __uv_warn_of(ev_io, uv_poll_t);
+  ev_init(w, cb);
+  w->fd = fd;
+  w->events = events;
+}
+
+
+inline static void __ev_io_set(__ev_io* w, int fd, int events) {
+  __uv_warn_of(ev_io, uv_poll_t);
+  w->fd = fd;
+  w->events = events;
+}
+
+
+inline static void __ev_io_start(__ev_io* w) {
+  __uv_warn_of(ev_io, uv_poll_t);
+  if (!(w->flags & 1)) {
+    uv_poll_init(uv_default_loop(), &w->handle, w->fd);
+    w->flags |= 1;
+  }
+  uv_poll_start(&w->handle, w->events, __uv_poll_cb);
+}
+
+
+inline static void __ev_io_stop(__ev_io* w) {
+  __uv_warn_of(ev_io, uv_poll_t);
+  uv_poll_stop(&w->handle);
+}
+
+
+inline static void __ev_timer_init(__ev_timer* w,
+                                   __ev_timer_cb cb,
+                                   double delay,
+                                   double repeat) {
+  __uv_warn_of(ev_timer, uv_timer_t);
+  ev_init(w, cb);
+  w->delay = delay;
+  w->repeat = repeat;
+}
+
+
+inline static void __ev_timer_set(__ev_timer* w,
+                                  double delay,
+                                  double repeat) {
+  __uv_warn_of(ev_timer, uv_timer_t);
+  w->delay = delay;
+  w->repeat = repeat;
+}
+
+
+inline static void __ev_timer_start(__ev_timer* w) {
+  uint64_t ms = 1000;
+  __uv_warn_of(ev_timer, uv_timer_t);
+  if (!(w->flags & 1)) {
+    uv_timer_init(uv_default_loop(), &w->handle);
+    w->flags |= 1;
+  }
+  uv_timer_start(&w->handle, __uv_timer_cb, w->delay * ms, w->repeat * ms);
+}
+
+
+inline static void __ev_timer_stop(__ev_timer* w) {
+  __uv_warn_of(ev_timer, uv_timer_t);
+  uv_timer_stop(&w->handle);
+}
+
+
+inline static void __ev_timer_again(__ev_timer* w) {
+  __uv_warn_of(ev_timer, uv_timer_t);
+  if (w->flags & 1)
+    uv_timer_again(&w->handle);
+  else
+    __ev_timer_start(w); /* work around node-zookeeper bug */
+}
+
+
+/* Evil. Using this will void your warranty. */
+inline static void __ev_ref(void) {
+  __uv_warn_of(ev_ref, uv_ref);
+  uv_default_loop()->active_handles++;
+}
+
+
+/* Evil. Using this will void your warranty. */
+inline static void __ev_unref(void) {
+  __uv_warn_of(ev_unref, uv_unref);
+  uv_default_loop()->active_handles--;
+}
+
+
+#define ev_io           __ev_io
+#define ev_io_init      __ev_io_init
+#define ev_io_set       __ev_io_set
+#define ev_io_start     __ev_io_start
+#define ev_io_stop      __ev_io_stop
+
+#define ev_timer        __ev_timer
+#define ev_timer_init   __ev_timer_init
+#define ev_timer_set    __ev_timer_set
+#define ev_timer_start  __ev_timer_start
+#define ev_timer_stop   __ev_timer_stop
+#define ev_timer_again  __ev_timer_again
+
+#define ev_ref          __ev_ref
+#define ev_unref        __ev_unref
+
+#undef __uv_container_of
+#undef __uv_warn_of
+
+#endif /* NODE_EV_EMUL_H_ */
diff --git a/src/node.h b/src/node.h
@@ -273,5 +273,10 @@ MakeCallback(const v8::Handle<v8::Object> object,
              const v8::Handle<v8::Function> callback,
              int argc,
              v8::Handle<v8::Value> argv[]);
+
+#if !defined(NODE_WANT_INTERNALS)
+# include "ev-emul.h"
+#endif
+
 }  // namespace node
 #endif  // SRC_NODE_H_
diff --git a/tools/installer.js b/tools/installer.js
@@ -92,7 +92,7 @@ if (cmd === 'install') {
   copy([
     // Node
     'src/node.h', 'src/node_buffer.h', 'src/node_object_wrap.h',
-    'src/node_version.h',
+    'src/node_version.h', 'src/ev-emul.h',
     // v8
     'deps/v8/include/v8-debug.h', 'deps/v8/include/v8-preparser.h',
     'deps/v8/include/v8-profiler.h', 'deps/v8/include/v8-testing.h',