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一个生产者协程通过channel让多个消费者协程消费的代码，内存不断上涨

### 问题描述
内存不断上涨，直到一个比较大的值。

### Swoole版本，PHP版本，以及操作系统版本信息
```bash
swoole

Swoole => enabled
Author => Swoole Team <team@swoole.com>
Version => 4.5.3RC1
Built => Aug 29 2020 12:27:11
coroutine => enabled
epoll => enabled
eventfd => enabled
signalfd => enabled
cpu_affinity => enabled
spinlock => enabled
rwlock => enabled
openssl => OpenSSL 1.0.2k-fips  26 Jan 2017
http2 => enabled
pcre => enabled
zlib => 1.2.7
mutex_timedlock => enabled
pthread_barrier => enabled
futex => enabled
async_redis => enabled

Directive => Local Value => Master Value
swoole.enable_coroutine => On => On
swoole.enable_library => On => On
swoole.enable_preemptive_scheduler => Off => Off
swoole.display_errors => On => On
swoole.use_shortname => Off => Off
swoole.unixsock_buffer_size => 8388608 => 8388608
```

```bash
Zend Engine v3.4.0, Copyright (c) Zend Technologies
```

```bash
Linux localhost.localdomain 3.10.0-1127.18.2.el7.x86_64 #1 SMP Sun Jul 26 15:27:06 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
```

```bash
specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.8.5/lto-wrapper
target: x86_64-redhat-linux
configure: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto --enable-plugin --enable-initfini-array --disable-libgcj --with-isl=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/isl-install --with-cloog=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/cloog-install --enable-gnu-indirect-function --with-tune=generic --with-arch_32=x86-64 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC)
```

### 相关代码
```php
<?php
\Swoole\Coroutine\run(function () {
    $jobCh = new \Swoole\Coroutine\Channel(1000);
    for ($i=0;$i<100;$i++) {
        \Swoole\Coroutine::create(function () use ($jobCh) {
            while ($job = $jobCh->pop(5)) {
                var_dump($job);
            }
        });
    }
    while (true) {
        sleep(3);
        $jobCh->push(1);
    }
});
```

### 你期待的结果是什么？实际看到的错误信息又是什么？
期待内存消耗比较小与稳定，我看到内存消耗不断上涨，知道200MB左右才停止下来。

发布于4年前 · 6 次浏览 · 来自提问