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| author | Anna Henningsen <anna@addaleax.net> | 2017-09-25 22:53:17 +0200 |
|---|---|---|
| committer | Anna Henningsen <anna@addaleax.net> | 2018-05-10 14:15:16 +0200 |
| commit | 1db0039c505c6081f1d0d84cc24133ed6659e539 (patch) | |
| tree | f6eab3adfb959b735d274f6c83790ef83834a21b /src/util.h | |
| parent | cac8496c2ff592198a7afd114610deccb0e178ab (diff) | |
| download | android-node-v8-1db0039c505c6081f1d0d84cc24133ed6659e539.tar.gz android-node-v8-1db0039c505c6081f1d0d84cc24133ed6659e539.tar.bz2 android-node-v8-1db0039c505c6081f1d0d84cc24133ed6659e539.zip | |
src: keep track of open requests
Workers cannot shut down while requests are open, so keep a counter
that is increased whenever libuv requests are made and decreased
whenever their callback is called.
This also applies to other embedders, who may want to shut down
an `Environment` instance early.
Many thanks for Stephen Belanger for reviewing the original version of
this commit in the Ayo.js project.
Fixes: https://github.com/nodejs/node/issues/20517
Refs: https://github.com/ayojs/ayo/pull/85
PR-URL: https://github.com/nodejs/node/pull/19377
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Diffstat (limited to 'src/util.h')
| -rw-r--r-- | src/util.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/util.h b/src/util.h index 7a1c6c109f..2c66104e9d 100644 --- a/src/util.h +++ b/src/util.h @@ -447,8 +447,16 @@ struct MallocedBuffer { MallocedBuffer& operator=(const MallocedBuffer&) = delete; }; -} // namespace node +// Test whether some value can be called with (). +template<typename T, typename = void> +struct is_callable : std::is_function<T> { }; + +template<typename T> +struct is_callable<T, typename std::enable_if< + std::is_same<decltype(void(&T::operator())), void>::value + >::type> : std::true_type { }; +} // namespace node #endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS |