deps: upgrade to libuv 1.29.1

Notable changes:

- uv_get_constrained_memory() has been added.
- A race condition in uv_async_send() has been fixed.
- uv_get_free_memory() and uv_get_total_memory() now read from
  /proc/meminfo, which should improve correctness when called
  from inside an lxc container.
- A failed assertion in uv_fs_poll_stop() has been fixed.
- A bug in MAC addresses for IP-aliases has been fixed.

Fixes: #27170
Fixes: #27493
PR-URL: #27718
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

deps/uv/.mailmap

@@ -46,3 +46,4 @@ Yuki Okumura <mjt@cltn.org>
 jBarz <jBarz@users.noreply.github.com> <jbarboza@ca.ibm.com>
 jBarz <jBarz@users.noreply.github.com> <jbarz@users.noreply.github.com>
 ptlomholt <pt@lomholt.com>
+zlargon <zlargon1988@gmail.com>

deps/uv/AUTHORS

@@ -376,3 +376,9 @@ Rich Trott <rtrott@gmail.com>
 Milad Farazmand <miladfar@ca.ibm.com>
 zlargon <zlargon1988@gmail.com>
 Yury Selivanov <yury@magic.io>
+Oscar Waddell <owaddell@beckman.com>
+FX Coudert <fxcoudert@gmail.com>
+George Zhao <zhaozg@gmail.com>
+Kyle Edwards <kyle.edwards@kitware.com>
+ken-cunningham-webuse <ken.cunningham.webuse@gmail.com>
+Kelvin Jin <kelvinjin@google.com>

deps/uv/CMakeLists.txt

@@ -297,8 +297,7 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
        src/unix/linux-inotify.c
        src/unix/linux-syscalls.c
        src/unix/procfs-exepath.c
-       src/unix/sysinfo-loadavg.c
-       src/unix/sysinfo-memory.c)
+       src/unix/sysinfo-loadavg.c)
 endif()
 
 if(CMAKE_SYSTEM_NAME STREQUAL "NetBSD")

deps/uv/ChangeLog

@@ -1,3 +1,59 @@
+2019.05.22, Version 1.29.1 (Stable), d16e6094e1eb3b0b5981ef1dd7e03ec4d466944d
+
+Changes since version 1.29.0:
+
+* unix: simplify uv/posix.h include logic (cjihrig)
+
+* test: increase test timeout (cjihrig)
+
+* linux: fix sscanf() overflows reading from /proc (Ben Noordhuis)
+
+
+2019.05.16, Version 1.29.0 (Stable), 43957efd92c167b352b4c948b617ca7afbee0ed1
+
+Changes since version 1.28.0:
+
+* ibmi: read memory and CPU usage info (Xu Meng)
+
+* doc: update the cmake testing instruction (zlargon)
+
+* unix: fix race condition in uv_async_send() (Ben Noordhuis)
+
+* linux: use O_CLOEXEC instead of EPOLL_CLOEXEC (Ben Noordhuis)
+
+* doc: mark uv_async_send() as async-signal-safe (Ben Noordhuis)
+
+* linux: init st_flags and st_gen when using statx (Oscar Waddell)
+
+* linux: read free/total memory from /proc/meminfo (Ben Noordhuis)
+
+* test: test zero-sized uv_fs_sendfile() writes (Ben Noordhuis)
+
+* unix: don't assert on UV_PROCESS_WINDOWS_* flags (Ben Noordhuis)
+
+* linux: set correct mac address for IP-aliases (Santiago Gimeno)
+
+* win,util: fix null pointer dereferencing (Tobias Nießen)
+
+* unix,win: fix `uv_fs_poll_stop()` when active (Anna Henningsen)
+
+* doc: add missing uv_fs_type entries (Michele Caini)
+
+* doc: fix build with sphinx 2.x (FX Coudert)
+
+* unix: don't make statx system call on Android (George Zhao)
+
+* unix: fix clang scan-build warning (Kyle Edwards)
+
+* unix: fall back to kqueue on older macOS systems (ken-cunningham-webuse)
+
+* unix,win: add uv_get_constrained_memory() (Kelvin Jin)
+
+* darwin: fix thread cancellation fd leak (Ben Noordhuis)
+
+* linux: fix thread cancellation fd leak (Ben Noordhuis)
+
+
 2019.04.16, Version 1.28.0 (Stable), 7bf8fabfa934660ee0fe889f78e151198a1165fc
 
 Changes since version 1.27.0:

deps/uv/Makefile.am

@@ -425,8 +425,7 @@ libuv_la_SOURCES += src/unix/linux-core.c \
                     src/unix/linux-syscalls.h \
                     src/unix/procfs-exepath.c \
                     src/unix/proctitle.c \
-                    src/unix/sysinfo-loadavg.c \
-                    src/unix/sysinfo-memory.c
+                    src/unix/sysinfo-loadavg.c
 test_run_tests_LDFLAGS += -lutil
 endif
 

deps/uv/README.md

@@ -172,11 +172,14 @@ $ make install
 To build with [CMake](https://cmake.org/):
 
 ```bash
-$ mkdir -p out/cmake ; cd out/cmake ; cmake -DBUILD_TESTING=ON ../..
-$ make all test
-# Or manually:
-$ ./uv_run_tests    # shared library build
-$ ./uv_run_tests_a  # static library build
+$ mkdir -p out/cmake ; cd out/cmake   # create build directory
+$ cmake ../.. -DBUILD_TESTING=ON      # generate project with test
+$ cmake --build .                     # build
+$ ctest -C Debug --output-on-failure  # run tests
+
+# Or manually run tests:
+$ ./out/cmake/uv_run_tests    # shared library build
+$ ./out/cmake/uv_run_tests_a  # static library build
 ```
 
 To build with GYP, first run:

deps/uv/configure.ac

@@ -13,7 +13,7 @@
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 AC_PREREQ(2.57)
-AC_INIT([libuv], [1.28.0], [https://github.com/libuv/libuv/issues])
+AC_INIT([libuv], [1.29.1], [https://github.com/libuv/libuv/issues])
 AC_CONFIG_MACRO_DIR([m4])
 m4_include([m4/libuv-extra-automake-flags.m4])
 m4_include([m4/as_case.m4])

deps/uv/docs/src/async.rst

@@ -50,6 +50,10 @@ API
         It's safe to call this function from any thread. The callback will be called on the
         loop thread.
 
+    .. note::
+        :c:func:`uv_async_send` is `async-signal-safe <http://man7.org/linux/man-pages/man7/signal-safety.7.html>`_.
+        It's safe to call this function from a signal handler.
+
     .. warning::
         libuv will coalesce calls to :c:func:`uv_async_send`, that is, not every call to it will
         yield an execution of the callback. For example: if :c:func:`uv_async_send` is called 5

deps/uv/docs/src/fs.rst

@@ -96,7 +96,10 @@ Data types
             UV_FS_FCHOWN,
             UV_FS_REALPATH,
             UV_FS_COPYFILE,
-            UV_FS_LCHOWN
+            UV_FS_LCHOWN,
+            UV_FS_OPENDIR,
+            UV_FS_READDIR,
+            UV_FS_CLOSEDIR
         } uv_fs_type;
 
 .. c:type:: uv_dirent_t

deps/uv/docs/src/misc.rst

@@ -461,6 +461,19 @@ API
 
     Gets memory information (in bytes).
 
+.. c:function:: uint64_t uv_get_constrained_memory(void)
+
+    Gets the amount of memory available to the process (in bytes) based on
+    limits imposed by the OS. If there is no such constraint, or the constraint
+    is unknown, `0` is returned. Note that it is not unusual for this value to
+    be less than or greater than :c:func:`uv_get_total_memory`.
+
+    .. note::
+        This function currently only returns a non-zero value on Linux, based
+        on cgroups if it is present.
+
+    .. versionadded:: 1.29.0
+
 .. c:function:: uint64_t uv_hrtime(void)
 
     Returns the current high-resolution real time. This is expressed in

deps/uv/docs/src/sphinx-plugins/manpage.py

@@ -39,7 +39,6 @@ def man_role(name, rawtext, text, lineno, inliner, options={}, content=[]):
 
 
 def setup(app):
-    app.info('Initializing manpage plugin')
     app.add_role('man', man_role)
     app.add_config_value('man_url_regex', None, 'env')
     return

deps/uv/include/uv.h

@@ -1561,6 +1561,7 @@ UV_EXTERN int uv_chdir(const char* dir);
 
 UV_EXTERN uint64_t uv_get_free_memory(void);
 UV_EXTERN uint64_t uv_get_total_memory(void);
+UV_EXTERN uint64_t uv_get_constrained_memory(void);
 
 UV_EXTERN uint64_t uv_hrtime(void);
 

deps/uv/include/uv/unix.h

@@ -49,8 +49,6 @@
 # include "uv/linux.h"
 #elif defined (__MVS__)
 # include "uv/os390.h"
-#elif defined(__PASE__)
-# include "uv/posix.h"
 #elif defined(_AIX)
 # include "uv/aix.h"
 #elif defined(__sun)
@@ -63,9 +61,10 @@
       defined(__OpenBSD__)         || \
       defined(__NetBSD__)
 # include "uv/bsd.h"
-#elif defined(__CYGWIN__) || defined(__MSYS__)
-# include "uv/posix.h"
-#elif defined(__GNU__)
+#elif defined(__PASE__)   || \
+      defined(__CYGWIN__) || \
+      defined(__MSYS__)   || \
+      defined(__GNU__)
 # include "uv/posix.h"
 #endif
 

deps/uv/include/uv/version.h

@@ -31,8 +31,8 @@
  */
 
 #define UV_VERSION_MAJOR 1
-#define UV_VERSION_MINOR 28
-#define UV_VERSION_PATCH 0
+#define UV_VERSION_MINOR 29
+#define UV_VERSION_PATCH 1
 #define UV_VERSION_IS_RELEASE 1
 #define UV_VERSION_SUFFIX ""
 

deps/uv/src/fs-poll.c

@@ -241,7 +241,7 @@ static void timer_close_cb(uv_handle_t* timer) {
   handle = ctx->parent_handle;
   if (ctx == handle->poll_ctx) {
     handle->poll_ctx = ctx->previous;
-    if (handle->poll_ctx == NULL)
+    if (handle->poll_ctx == NULL && uv__is_closing(handle))
       uv__make_close_pending((uv_handle_t*)handle);
   } else {
     for (last = handle->poll_ctx, it = last->previous;

deps/uv/src/unix/aix.c

@@ -344,6 +344,11 @@ uint64_t uv_get_total_memory(void) {
 }
 
 
+uint64_t uv_get_constrained_memory(void) {
+  return 0;  /* Memory constraints are unknown. */
+}
+
+
 void uv_loadavg(double avg[3]) {
   perfstat_cpu_total_t ps_total;
   int result = perfstat_cpu_total(NULL, &ps_total, sizeof(ps_total), 1);

deps/uv/src/unix/async.c

@@ -61,14 +61,43 @@ int uv_async_send(uv_async_t* handle) {
   if (ACCESS_ONCE(int, handle->pending) != 0)
     return 0;
 
-  if (cmpxchgi(&handle->pending, 0, 1) == 0)
-    uv__async_send(handle->loop);
+  /* Tell the other thread we're busy with the handle. */
+  if (cmpxchgi(&handle->pending, 0, 1) != 0)
+    return 0;
+
+  /* Wake up the other thread's event loop. */
+  uv__async_send(handle->loop);
+
+  /* Tell the other thread we're done. */
+  if (cmpxchgi(&handle->pending, 1, 2) != 1)
+    abort();
 
   return 0;
 }
 
 
+/* Only call this from the event loop thread. */
+static int uv__async_spin(uv_async_t* handle) {
+  int rc;
+
+  for (;;) {
+    /* rc=0 -- handle is not pending.
+     * rc=1 -- handle is pending, other thread is still working with it.
+     * rc=2 -- handle is pending, other thread is done.
+     */
+    rc = cmpxchgi(&handle->pending, 2, 0);
+
+    if (rc != 1)
+      return rc;
+
+    /* Other thread is busy with this handle, spin until it's done. */
+    cpu_relax();
+  }
+}
+
+
 void uv__async_close(uv_async_t* handle) {
+  uv__async_spin(handle);
   QUEUE_REMOVE(&handle->queue);
   uv__handle_stop(handle);
 }
@@ -109,8 +138,8 @@ static void uv__async_io(uv_loop_t* loop, uv__io_t* w, unsigned int events) {
     QUEUE_REMOVE(q);
     QUEUE_INSERT_TAIL(&loop->async_handles, q);
 
-    if (cmpxchgi(&h->pending, 1, 0) == 0)
-      continue;
+    if (0 == uv__async_spin(h))
+      continue;  /* Not pending. */
 
     if (h->async_cb == NULL)
       continue;

deps/uv/src/unix/core.c

@@ -88,6 +88,10 @@
 #include <sys/ioctl.h>
 #endif
 
+#if defined(__linux__)
+#include <sys/syscall.h>
+#endif
+
 static int uv__run_pending(uv_loop_t* loop);
 
 /* Verify that uv_buf_t is ABI-compatible with struct iovec. */
@@ -510,14 +514,37 @@ int uv__accept(int sockfd) {
 }
 
 
+/* close() on macos has the "interesting" quirk that it fails with EINTR
+ * without closing the file descriptor when a thread is in the cancel state.
+ * That's why libuv calls close$NOCANCEL() instead.
+ *
+ * glibc on linux has a similar issue: close() is a cancellation point and
+ * will unwind the thread when it's in the cancel state. Work around that
+ * by making the system call directly. Musl libc is unaffected.
+ */
+int uv__close_nocancel(int fd) {
+#if defined(__APPLE__)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdollar-in-identifier-extension"
+  extern int close$NOCANCEL(int);
+  return close$NOCANCEL(fd);
+#pragma GCC diagnostic pop
+#elif defined(__linux__)
+  return syscall(SYS_close, fd);
+#else
+  return close(fd);
+#endif
+}
+
+
 int uv__close_nocheckstdio(int fd) {
   int saved_errno;
   int rc;
 
   assert(fd > -1);  /* Catch uninitialized io_watcher.fd bugs. */
 
   saved_errno = errno;
-  rc = close(fd);
+  rc = uv__close_nocancel(fd);
   if (rc == -1) {
     rc = UV__ERR(errno);
     if (rc == UV_EINTR || rc == UV__ERR(EINPROGRESS))

deps/uv/src/unix/darwin.c

@@ -117,6 +117,11 @@ uint64_t uv_get_total_memory(void) {
 }
 
 
+uint64_t uv_get_constrained_memory(void) {
+  return 0;  /* Memory constraints are unknown. */
+}
+
+
 void uv_loadavg(double avg[3]) {
   struct loadavg info;
   size_t size = sizeof(info);

deps/uv/src/unix/freebsd.c

@@ -137,6 +137,11 @@ uint64_t uv_get_total_memory(void) {
 }
 
 
+uint64_t uv_get_constrained_memory(void) {
+  return 0;  /* Memory constraints are unknown. */
+}
+
+
 void uv_loadavg(double avg[3]) {
   struct loadavg info;
   size_t size = sizeof(info);

deps/uv/src/unix/fs.c

@@ -145,7 +145,7 @@ extern char *mkdtemp(char *template); /* See issue #740 on AIX < 7 */
 static int uv__fs_close(int fd) {
   int rc;
 
-  rc = close(fd);
+  rc = uv__close_nocancel(fd);
   if (rc == -1)
     if (errno == EINTR || errno == EINPROGRESS)
       rc = 0;  /* The close is in progress, not an error. */
@@ -1165,6 +1165,8 @@ static int uv__fs_statx(int fd,
   buf->st_ctim.tv_nsec = statxbuf.stx_ctime.tv_nsec;
   buf->st_birthtim.tv_sec = statxbuf.stx_btime.tv_sec;
   buf->st_birthtim.tv_nsec = statxbuf.stx_btime.tv_nsec;
+  buf->st_flags = 0;
+  buf->st_gen = 0;
 
   return 0;
 #else

deps/uv/src/unix/fsevents.c

@@ -21,9 +21,10 @@
 #include "uv.h"
 #include "internal.h"
 
-#if TARGET_OS_IPHONE
+#if TARGET_OS_IPHONE || MAC_OS_X_VERSION_MAX_ALLOWED < 1070
 
 /* iOS (currently) doesn't provide the FSEvents-API (nor CoreServices) */
+/* macOS prior to 10.7 doesn't provide the full FSEvents API so use kqueue */
 
 int uv__fsevents_init(uv_fs_event_t* handle) {
   return 0;