uv: upgrade to 0.10.8

deps/uv/ChangeLog

@@ -1,4 +1,27 @@
-2013.05.15, Version 0.10.7 (Stable)
+2013.05.25, Version 0.10.8 (Stable)
+
+Changes since version 0.10.7:
+
+* windows: make uv_spawn not fail under job control (Bert Belder)
+
+* darwin: assume CFRunLoopStop() isn't thread-safe (Fedor Indutny)
+
+* win: fix UV_EALREADY incorrectly set (Bert Belder)
+
+* darwin: make two uv__cf_*() functions static (Ben Noordhuis)
+
+* darwin: task_info() cannot fail (Ben Noordhuis)
+
+* unix: add mapping for ENETDOWN (Ben Noordhuis)
+
+* unix: implicitly signal write errors to libuv user (Ben Noordhuis)
+
+* unix: fix assert on signal pipe overflow (Bert Belder)
+
+* unix: turn off POLLOUT after stream connect (Ben Noordhuis)
+
+
+2013.05.15, Version 0.10.7 (Stable), 028baaf0846b686a81e992cb2f2f5a9b8e841fcf
 
 Changes since version 0.10.6:
 

deps/uv/src/unix/darwin.c

@@ -38,8 +38,8 @@
 #include <unistd.h>  /* sysconf */
 
 /* Forward declarations */
-void uv__cf_loop_runner(void* arg);
-void uv__cf_loop_cb(void* arg);
+static void uv__cf_loop_runner(void* arg);
+static void uv__cf_loop_cb(void* arg);
 
 typedef struct uv__cf_loop_signal_s uv__cf_loop_signal_t;
 struct uv__cf_loop_signal_s {
@@ -84,9 +84,8 @@ void uv__platform_loop_delete(uv_loop_t* loop) {
   uv__cf_loop_signal_t* s;
 
   assert(loop->cf_loop != NULL);
-  CFRunLoopStop(loop->cf_loop);
+  uv__cf_loop_signal(loop, NULL, NULL);
   uv_thread_join(&loop->cf_thread);
-  loop->cf_loop = NULL;
 
   uv_sem_destroy(&loop->cf_sem);
   uv_mutex_destroy(&loop->cf_mutex);
@@ -103,7 +102,7 @@ void uv__platform_loop_delete(uv_loop_t* loop) {
 }
 
 
-void uv__cf_loop_runner(void* arg) {
+static void uv__cf_loop_runner(void* arg) {
   uv_loop_t* loop;
 
   loop = arg;
@@ -125,7 +124,7 @@ void uv__cf_loop_runner(void* arg) {
 }
 
 
-void uv__cf_loop_cb(void* arg) {
+static void uv__cf_loop_cb(void* arg) {
   uv_loop_t* loop;
   ngx_queue_t* item;
   ngx_queue_t split_head;
@@ -145,7 +144,12 @@ void uv__cf_loop_cb(void* arg) {
     item = ngx_queue_head(&split_head);
 
     s = ngx_queue_data(item, uv__cf_loop_signal_t, member);
-    s->cb(s->arg);
+
+    /* This was a termination signal */
+    if (s->cb == NULL)
+      CFRunLoopStop(loop->cf_loop);
+    else
+      s->cb(s->arg);
 
     ngx_queue_remove(item);
     free(s);
@@ -253,19 +257,21 @@ void uv_loadavg(double avg[3]) {
 
 
 uv_err_t uv_resident_set_memory(size_t* rss) {
-  struct task_basic_info t_info;
-  mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT;
-
-  int r = task_info(mach_task_self(),
-                    TASK_BASIC_INFO,
-                    (task_info_t)&t_info,
-                    &t_info_count);
-
-  if (r != KERN_SUCCESS) {
-    return uv__new_sys_error(errno);
-  }
-
-  *rss = t_info.resident_size;
+  mach_msg_type_number_t count;
+  task_basic_info_data_t info;
+  kern_return_t err;
+
+  count = TASK_BASIC_INFO_COUNT;
+  err = task_info(mach_task_self(),
+                  TASK_BASIC_INFO,
+                  (task_info_t) &info,
+                  &count);
+  (void) &err;
+  /* task_info(TASK_BASIC_INFO) cannot really fail. Anything other than
+   * KERN_SUCCESS implies a libuv bug.
+   */
+  assert(err == KERN_SUCCESS);
+  *rss = info.resident_size;
 
   return uv_ok_;
 }

deps/uv/src/unix/error.c

@@ -79,6 +79,7 @@ uv_err_code uv_translate_sys_error(int sys_errno) {
     case EMSGSIZE: return UV_EMSGSIZE;
     case ENAMETOOLONG: return UV_ENAMETOOLONG;
     case EINVAL: return UV_EINVAL;
+    case ENETDOWN: return UV_ENETDOWN;
     case ENETUNREACH: return UV_ENETUNREACH;
     case ECONNABORTED: return UV_ECONNABORTED;
     case ELOOP: return UV_ELOOP;

deps/uv/src/unix/signal.c

@@ -160,7 +160,7 @@ static void uv__signal_handler(int signum) {
     } while (r == -1 && errno == EINTR);
 
     assert(r == sizeof msg ||
-           (r == -1 && errno != EAGAIN && errno != EWOULDBLOCK));
+           (r == -1 && (errno == EAGAIN || errno == EWOULDBLOCK)));
 
     if (r != -1)
       handle->caught_signals++;

deps/uv/src/unix/stream.c

@@ -60,6 +60,7 @@ static void uv__stream_connect(uv_stream_t*);
 static void uv__write(uv_stream_t* stream);
 static void uv__read(uv_stream_t* stream);
 static void uv__stream_io(uv_loop_t* loop, uv__io_t* w, unsigned int events);
+static size_t uv__write_req_size(uv_write_t* req);
 
 
 /* Used by the accept() EMFILE party trick. */
@@ -399,6 +400,7 @@ void uv__stream_destroy(uv_stream_t* stream) {
 
     if (req->bufs != req->bufsml)
       free(req->bufs);
+    req->bufs = NULL;
 
     if (req->cb) {
       uv__set_artificial_error(req->handle->loop, UV_ECANCELED);
@@ -413,6 +415,13 @@ void uv__stream_destroy(uv_stream_t* stream) {
     req = ngx_queue_data(q, uv_write_t, queue);
     uv__req_unregister(stream->loop, req);
 
+    if (req->bufs != NULL) {
+      stream->write_queue_size -= uv__write_req_size(req);
+      if (req->bufs != req->bufsml)
+        free(req->bufs);
+      req->bufs = NULL;
+    }
+
     if (req->cb) {
       uv__set_sys_error(stream->loop, req->error);
       req->cb(req, req->error ? -1 : 0);
@@ -652,6 +661,7 @@ static void uv__drain(uv_stream_t* stream) {
 static size_t uv__write_req_size(uv_write_t* req) {
   size_t size;
 
+  assert(req->bufs != NULL);
   size = uv__buf_count(req->bufs + req->write_index,
                        req->bufcnt - req->write_index);
   assert(req->handle->write_queue_size >= size);
@@ -665,10 +675,18 @@ static void uv__write_req_finish(uv_write_t* req) {
 
   /* Pop the req off tcp->write_queue. */
   ngx_queue_remove(&req->queue);
-  if (req->bufs != req->bufsml) {
-    free(req->bufs);
+
+  /* Only free when there was no error. On error, we touch up write_queue_size
+   * right before making the callback. The reason we don't do that right away
+   * is that a write_queue_size > 0 is our only way to signal to the user that
+   * he should stop writing - which he should if we got an error. Something to
+   * revisit in future revisions of the libuv API.
+   */
+  if (req->error == 0) {
+    if (req->bufs != req->bufsml)
+      free(req->bufs);
+    req->bufs = NULL;
   }
-  req->bufs = NULL;
 
   /* Add it to the write_completed_queue where it will have its
    * callback called in the near future.
@@ -778,7 +796,6 @@ start:
     if (errno != EAGAIN && errno != EWOULDBLOCK) {
       /* Error */
       req->error = errno;
-      stream->write_queue_size -= uv__write_req_size(req);
       uv__write_req_finish(req);
       return;
     } else if (stream->flags & UV_STREAM_BLOCKING) {
@@ -855,6 +872,13 @@ static void uv__write_callbacks(uv_stream_t* stream) {
     ngx_queue_remove(q);
     uv__req_unregister(stream->loop, req);
 
+    if (req->bufs != NULL) {
+      stream->write_queue_size -= uv__write_req_size(req);
+      if (req->bufs != req->bufsml)
+        free(req->bufs);
+      req->bufs = NULL;
+    }
+
     /* NOTE: call callback AFTER freeing the request data. */
     if (req->cb) {
       uv__set_sys_error(stream->loop, req->error);
@@ -1136,6 +1160,7 @@ static void uv__stream_connect(uv_stream_t* stream) {
 
   stream->connect_req = NULL;
   uv__req_unregister(stream->loop, req);
+  uv__io_stop(stream->loop, &stream->io_watcher, UV__POLLOUT);
 
   if (req->cb) {
     uv__set_sys_error(stream->loop, error);
@@ -1283,6 +1308,16 @@ int uv_read2_start(uv_stream_t* stream, uv_alloc_cb alloc_cb,
 
 
 int uv_read_stop(uv_stream_t* stream) {
+  /* Sanity check. We're going to stop the handle unless it's primed for
+   * writing but that means there should be some kind of write action in
+   * progress.
+   */
+  assert(!uv__io_active(&stream->io_watcher, UV__POLLOUT) ||
+         !ngx_queue_empty(&stream->write_completed_queue) ||
+         !ngx_queue_empty(&stream->write_queue) ||
+         stream->shutdown_req != NULL ||
+         stream->connect_req != NULL);
+
   uv__io_stop(stream->loop, &stream->io_watcher, UV__POLLIN);
   uv__handle_stop(stream);
   stream->flags &= ~UV_STREAM_READING;

deps/uv/src/version.c

@@ -34,7 +34,7 @@
 
 #define UV_VERSION_MAJOR 0
 #define UV_VERSION_MINOR 10
-#define UV_VERSION_PATCH 7
+#define UV_VERSION_PATCH 8
 #define UV_VERSION_IS_RELEASE 1
 
 

deps/uv/src/win/process.c

@@ -49,7 +49,22 @@ static HANDLE uv_global_job_handle_;
 static uv_once_t uv_global_job_handle_init_guard_ = UV_ONCE_INIT;
 
 
-static void uv__init_global_job_handle() {
+static void uv__init_global_job_handle(void) {
+  /* Create a job object and set it up to kill all contained processes when
+   * it's closed. Since this handle is made non-inheritable and we're not
+   * giving it to anyone, we're the only process holding a reference to it.
+   * That means that if this process exits it is closed and all the processes
+   * it contains are killed. All processes created with uv_spawn that are not
+   * spawned with the UV_PROCESS_DETACHED flag are assigned to this job.
+   *
+   * We're setting the JOB_OBJECT_LIMIT_SILENT_BREAKAWAY_OK flag so only the
+   * processes that we explicitly add are affected, and *their* subprocesses
+   * are not. This ensures that our child processes are not limited in their
+   * ability to use job control on Windows versions that don't deal with
+   * nested jobs (prior to Windows 8 / Server 2012). It also lets our child
+   * processes created detached processes without explicitly breaking away
+   * from job control (which uv_spawn doesn't, either).
+   */
   SECURITY_ATTRIBUTES attr;
   JOBOBJECT_EXTENDED_LIMIT_INFORMATION info;
 
@@ -920,7 +935,18 @@ int uv_spawn(uv_loop_t* loop, uv_process_t* process,
   }
 
   process_flags = CREATE_UNICODE_ENVIRONMENT;
+
   if (options.flags & UV_PROCESS_DETACHED) {
+    /* Note that we're not setting the CREATE_BREAKAWAY_FROM_JOB flag. That
+     * means that libuv might not let you create a fully deamonized process
+     * when run under job control. However the type of job control that libuv
+     * itself creates doesn't trickle down to subprocesses so they can still
+     * daemonize.
+     *
+     * A reason to not do this is that CREATE_BREAKAWAY_FROM_JOB makes the
+     * CreateProcess call fail if we're under job control that doesn't allow
+     * breakaway.
+     */
     process_flags |= DETACHED_PROCESS | CREATE_NEW_PROCESS_GROUP;
   }
 
@@ -943,8 +969,21 @@ int uv_spawn(uv_loop_t* loop, uv_process_t* process,
     if (!(options.flags & UV_PROCESS_DETACHED)) {
       uv_once(&uv_global_job_handle_init_guard_, uv__init_global_job_handle);
 
-      if (!AssignProcessToJobObject(uv_global_job_handle_, info.hProcess))
-        uv_fatal_error(GetLastError(), "AssignProcessToJobObject");
+      if (!AssignProcessToJobObject(uv_global_job_handle_, info.hProcess)) {
+        /* AssignProcessToJobObject might fail if this process is under job
+         * control and the job doesn't have the
+         * JOB_OBJECT_LIMIT_SILENT_BREAKAWAY_OK flag set, on a Windows version
+         * that doesn't support nested jobs.
+         *
+         * When that happens we just swallow the error and continue without
+         * establishing a kill-child-on-parent-exit relationship, otherwise
+         * there would be no way for libuv applications run under job control
+         * to spawn processes at all.
+         */
+        DWORD err = GetLastError();
+        if (err != ERROR_ACCESS_DENIED)
+          uv_fatal_error(err, "AssignProcessToJobObject");
+      }
     }
 
     /* Set IPC pid to all IPC pipes. */

deps/uv/src/win/stream.c

@@ -56,7 +56,7 @@ int uv_accept(uv_stream_t* server, uv_stream_t* client) {
 int uv_read_start(uv_stream_t* handle, uv_alloc_cb alloc_cb,
     uv_read_cb read_cb) {
   if (handle->flags & UV_HANDLE_READING) {
-    uv__set_sys_error(handle->loop, UV_EALREADY);
+    uv__set_artificial_error(handle->loop, UV_EALREADY);
     return -1;
   }
 
@@ -82,7 +82,7 @@ int uv_read_start(uv_stream_t* handle, uv_alloc_cb alloc_cb,
 int uv_read2_start(uv_stream_t* handle, uv_alloc_cb alloc_cb,
     uv_read2_cb read_cb) {
   if (handle->flags & UV_HANDLE_READING) {
-    uv__set_sys_error(handle->loop, UV_EALREADY);
+    uv__set_artificial_error(handle->loop, UV_EALREADY);
     return -1;
   }