Swoole 4.4：支持 CURL 协程化

栏目: PHP · 发布时间: 5年前

内容简介：在经过验证使用

在 4.4 之前的版本中， Swoole 一直不支持 CURL 协程化，在代码中无法使用 curl 。由于 curl 使用了 libcurl 库实现，无法直接 hook 它的 socket ， 4.4 版本使用 Swoole\Coroutine\Http\Client 模拟实现了 curl 的 API ，并在底层替换了 curl_init 等函数的 C Handler 。

提示

CURL Hook 的特性尚处于试验阶段，请勿在生产环境中直接使用
暂不支持文件上传、 CURL Multi
仍然需要依赖 curl ，请务必安装 curl 扩展

支持的特性列表

GET/POST
Header
Cookie
Https

经过验证 Guzzle CURL 完全可以使用

开启

使用 Runtime::enableCoroutine 来开启 CURL Hook 。

默认不开启 CURL Hook

Swoole\Runtime::enableCoroutine(SWOOLE_HOOK_ALL);
Swoole\Runtime::enableCoroutine(SWOOLE_HOOK_CURL);

使用

$n = 10;
while($n--) {
    go(function () {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, "http://www.xinhuanet.com/");
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_HEADER, 0);
        $output = curl_exec($ch);
        if ($output === FALSE) {
            echo "CURL Error:" . curl_error($ch);
        }
        curl_close($ch);
        echo strlen($output) . " bytes\n";
    });
}

要将上面两段代码合并到一个文件中执行

运行结果

htf@LAPTOP-0K15EFQI:~/swoole-src/examples$ time php curl.php
177173 bytes
177173 bytes
177173 bytes
177173 bytes
177173 bytes
177173 bytes
177173 bytes
177173 bytes
177173 bytes
177173 bytes

real    0m0.534s
user    0m0.031s
sys     0m0.297s

可以看到整个程序是并行的，进程没有任何阻塞。

strace 跟踪

使用 strace 跟踪发现，所有系统调用均变成 epoll + socket 的异步非阻塞调用了。

epoll_create(512)                       = 3
mmap(NULL, 258048, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc038a50000
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc028910000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 4
fcntl(4, F_GETFL)                       = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(4, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(4, SOL_TCP, TCP_NODELAY, [1], 4) = 0
pipe([5, 6])                            = 0
fcntl(5, F_GETFL)                       = 0 (flags O_RDONLY)
fcntl(5, F_SETFL, O_RDONLY|O_NONBLOCK)  = 0
fcntl(6, F_GETFL)                       = 0x1 (flags O_WRONLY)
fcntl(6, F_SETFL, O_WRONLY|O_NONBLOCK)  = 0
epoll_ctl(3, EPOLL_CTL_ADD, 5, {EPOLLIN, {u32=5, u64=34359738373}}) = 0
mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc028100000
mprotect(0x7fc028101000, 8388608, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7fc0288ffb70, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7fc0289009d0, tls=0x7fc028900700, child_tidptr=0x7fc0289009d0) = 55
mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc0237f0000
mprotect(0x7fc0237f1000, 8388608, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7fc023fefb70, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7fc023ff09d0, tls=0x7fc023ff0700, child_tidptr=0x7fc023ff09d0) = 56
mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc022fe0000
mprotect(0x7fc022fe1000, 8388608, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7fc0237dfb70, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7fc0237e09d0, tls=0x7fc0237e0700, child_tidptr=0x7fc0237e09d0) = 57
mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc0227d0000
mprotect(0x7fc0227d1000, 8388608, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7fc022fcfb70, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7fc022fd09d0, tls=0x7fc022fd0700, child_tidptr=0x7fc022fd09d0) = 58
futex(0x7fffd9e01ce0, FUTEX_WAKE_PRIVATE, 1) = 1
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=513190000}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=513408000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc0225c0000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 8
fcntl(8, F_GETFL)                       = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(8, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(8, SOL_TCP, TCP_NODELAY, [1], 4) = 0
futex(0x7fffd9e01ce0, FUTEX_WAKE_PRIVATE, 1) = 1
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=514359000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc0223b0000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 10
fcntl(10, F_GETFL)                      = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(10, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(10, SOL_TCP, TCP_NODELAY, [1], 4) = 0
futex(0x7fffd9e01ce0, FUTEX_WAKE_PRIVATE, 1) = 1
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=515961000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc0221a0000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 9
fcntl(9, F_GETFL)                       = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(9, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(9, SOL_TCP, TCP_NODELAY, [1], 4) = 0
futex(0x7fffd9e01ce4, FUTEX_WAKE_PRIVATE, 1) = 1
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=517822000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc021f90000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 7
fcntl(7, F_GETFL)                       = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(7, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(7, SOL_TCP, TCP_NODELAY, [1], 4) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=520138000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc021b60000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 11
fcntl(11, F_GETFL)                      = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(11, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(11, SOL_TCP, TCP_NODELAY, [1], 4) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=521400000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc021950000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 12
fcntl(12, F_GETFL)                      = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(12, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(12, SOL_TCP, TCP_NODELAY, [1], 4) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=523446000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc021530000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 17
fcntl(17, F_GETFL)                      = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(17, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(17, SOL_TCP, TCP_NODELAY, [1], 4) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=524631000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc021320000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 18
fcntl(18, F_GETFL)                      = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(18, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(18, SOL_TCP, TCP_NODELAY, [1], 4) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=525903000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc021110000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 19
fcntl(19, F_GETFL)                      = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(19, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(19, SOL_TCP, TCP_NODELAY, [1], 4) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=527295000}) = 0
epoll_wait(3, [{EPOLLIN, {u32=5, u64=34359738373}}], 4096, 1000) = 1
read(5, "0T\340\331\377\177\0\0", 1024) = 8
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(8, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=636297000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 8, {EPOLLOUT, {u32=8, u64=38654705672}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=638815000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
brk(0x7fffd9e19000)                     = 0x7fffd9e19000
epoll_wait(3, [{EPOLLIN, {u32=5, u64=34359738373}}], 4096, 875) = 1
read(5, "\0u\333\331\377\177\0\0\20g\341\331\377\177\0\0\200W\340\331\377\177\0\0", 1024) = 24
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(4, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=643393000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 4, {EPOLLOUT, {u32=4, u64=38654705668}}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(9, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=647077000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 9, {EPOLLOUT, {u32=9, u64=38654705673}}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(10, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=648967000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 10, {EPOLLOUT, {u32=10, u64=38654705674}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=649672000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
epoll_wait(3, [{EPOLLOUT, {u32=8, u64=38654705672}}], 4096, 870) = 1
epoll_ctl(3, EPOLL_CTL_DEL, 8, NULL)    = 0
getsockopt(8, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
brk(0x7fffd9e49000)                     = 0x7fffd9e49000
sendto(8, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
recvfrom(8, 0x7fffd9e28c70, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 8, {EPOLLIN, {u32=8, u64=38654705672}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=655130000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
epoll_wait(3, [{EPOLLIN, {u32=5, u64=34359738373}}, {EPOLLOUT, {u32=4, u64=38654705668}}, {EPOLLOUT, {u32=9, u64=38654705673}}], 4096, 865) = 3
read(5, "\360l\341\331\377\177\0\0", 1024) = 8
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(7, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=657746000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 7, {EPOLLOUT, {u32=7, u64=38654705671}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 4, NULL)    = 0
getsockopt(4, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
sendto(4, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
brk(0x7fffd9e79000)                     = 0x7fffd9e79000
recvfrom(4, 0x7fffd9e48c90, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 4, {EPOLLIN, {u32=4, u64=38654705668}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 9, NULL)    = 0
getsockopt(9, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
sendto(9, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
recvfrom(9, 0x7fffd9e68cb0, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 9, {EPOLLIN, {u32=9, u64=38654705673}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=662268000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
epoll_wait(3, [{EPOLLIN, {u32=5, u64=34359738373}}, {EPOLLOUT, {u32=10, u64=38654705674}}, {EPOLLOUT, {u32=7, u64=38654705671}}], 4096, 859) = 3
read(5, "P~\341\331\377\177\0\0\320r\341\331\377\177\0\0px\341\331\377\177\0\0", 1024) = 24
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(17, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=664547000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 17, {EPOLLOUT, {u32=17, u64=38654705681}}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(11, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=665490000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 11, {EPOLLOUT, {u32=11, u64=38654705675}}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(12, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=667097000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 12, {EPOLLOUT, {u32=12, u64=38654705676}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 10, NULL)   = 0
getsockopt(10, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
brk(0x7fffd9ea9000)                     = 0x7fffd9ea9000
sendto(10, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
recvfrom(10, 0x7fffd9e88cd0, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 10, {EPOLLIN, {u32=10, u64=38654705674}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 7, NULL)    = 0
getsockopt(7, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
sendto(7, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
brk(0x7fffd9ed9000)                     = 0x7fffd9ed9000
recvfrom(7, 0x7fffd9ea8cf0, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 7, {EPOLLIN, {u32=7, u64=38654705671}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=670626000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
epoll_wait(3, [{EPOLLIN, {u32=5, u64=34359738373}}, {EPOLLOUT, {u32=17, u64=38654705681}}, {EPOLLOUT, {u32=11, u64=38654705675}}], 4096, 855) = 3
read(5, "\20\212\341\331\377\177\0\0000\204\341\331\377\177\0\0", 1024) = 16
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(19, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=672183000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 19, {EPOLLOUT, {u32=19, u64=38654705683}}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(18, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=672576000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 18, {EPOLLOUT, {u32=18, u64=38654705682}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 17, NULL)   = 0
getsockopt(17, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
sendto(17, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
recvfrom(17, 0x7fffd9ec8d10, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 17, {EPOLLIN, {u32=17, u64=38654705681}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 11, NULL)   = 0
getsockopt(11, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
brk(0x7fffd9f09000)                     = 0x7fffd9f09000
sendto(11, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
recvfrom(11, 0x7fffd9ee8d30, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 11, {EPOLLIN, {u32=11, u64=38654705675}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=674303000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
epoll_wait(3, [{EPOLLOUT, {u32=12, u64=38654705676}}], 4096, 992) = 1
epoll_ctl(3, EPOLL_CTL_DEL, 12, NULL)   = 0
getsockopt(12, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
sendto(12, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
brk(0x7fffd9f39000)                     = 0x7fffd9f39000
recvfrom(12, 0x7fffd9f08d50, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 12, {EPOLLIN, {u32=12, u64=38654705676}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=687389000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
epoll_wait(3, [{EPOLLOUT, {u32=19, u64=38654705683}}, {EPOLLOUT, {u32=18, u64=38654705682}}], 4096, 984) = 2
epoll_ctl(3, EPOLL_CTL_DEL, 19, NULL)   = 0
getsockopt(19, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
sendto(19, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
recvfrom(19, 0x7fffd9f28d70, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 19, {EPOLLIN, {u32=19, u64=38654705683}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 18, NULL)   = 0
getsockopt(18, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
brk(0x7fffd9f69000)                     = 0x7fffd9f69000
sendto(18, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
recvfrom(18, 0x7fffd9f48d90, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 18, {EPOLLIN, {u32=18, u64=38654705682}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=694225000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
epoll_wait(3, [{EPOLLIN, {u32=4, u64=38654705668}}], 4096, -1) = 1
epoll_ctl(3, EPOLL_CTL_DEL, 4, NULL)    = 0
recvfrom(4, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 4096
recvfrom(4, 0x7fffd9e48c90, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 4, {EPOLLIN, {u32=4, u64=38654705668}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=237, tv_nsec=399093000}) = 0
time(NULL)                              = 1559698604 (2019-06-05T09:36:44+0800)
brk(0x7fffd9f59000)                     = 0x7fffd9f59000
epoll_wait(3, [{EPOLLIN, {u32=4, u64=38654705668}}], 4096, -1) = 1
epoll_ctl(3, EPOLL_CTL_DEL, 4, NULL)    = 0
recvfrom(4, "V{\362b4\236\22\331\350H\357\313\374\314s\372N\3257\324\16\n\257\24H\217y\376\204P\3\206"..., 65536, 0, NULL, NULL) = 8192
recvfrom(4, 0x7fffd9e48c90, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 4, {EPOLLIN, {u32=4, u64=38654705668}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=237, tv_nsec=460756000}) = 0
time(NULL)                              = 1559698604 (2019-06-05T09:36:44+0800)
epoll_wait(3, [{EPOLLIN, {u32=4, u64=38654705668}}], 4096, -1) = 1
epoll_ctl(3, EPOLL_CTL_DEL, 4, NULL)    = 0
recvfrom(4, "\374\346{V\311\306\246|0F\276\337\0\370`\22\224\7\253\312\306\200\262~\374\250\20'\317\233w\r"..., 65536, 0, NULL, NULL) = 8192
recvfrom(4, 0x7fffd9e48c90, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 4, {EPOLLIN, {u32=4, u64=38654705668}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=237, tv_nsec=465855000}) = 0
time(NULL)                              = 1559698604 (2019-06-05T09:36:44+0800)
epoll_wait(3, [{EPOLLIN, {u32=4, u64=38654705668}}], 4096, -1) = 1
epoll_ctl(3, EPOLL_CTL_DEL, 4, NULL)    = 0
recvfrom(4, "\3442@o\362\340\10\240#\337=J2=\274\337\201\307=3O\324\342\35s7\\\16\7^\"\23"..., 65536, 0, NULL, NULL) = 19559
brk(0x7fffd9f99000)                     = 0x7fffd9f99000
close(4)                                = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc028910000, 2101248)         = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=237, tv_nsec=479677000}) = 0
time(NULL)                              = 1559698604 (2019-06-05T09:36:44+0800)
epoll_wait(3, [{EPOLLIN, {u32=9, u64=38654705673}}, {EPOLLIN, {u32=7, u64=38654705671}}, {EPOLLIN, {u32=17, u64=38654705681}}, {EPOLLIN, {u32=11, u64=38654705675}}], 4096, -1) = 4
epoll_ctl(3, EPOLL_CTL_DEL, 9, NULL)    = 0
recvfrom(9, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 4096
recvfrom(9, 0x7fffd9e68cb0, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 9, {EPOLLIN, {u32=9, u64=38654705673}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 7, NULL)    = 0
recvfrom(7, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 4096
recvfrom(7, "V{\362b4\236\22\331\350H\357\313\374\314s\372N\3257\324\16\n\257\24H\217y\376\204P\3\206"..., 65536, 0, NULL, NULL) = 4096
recvfrom(7, 0x7fffd9ea8cf0, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 7, {EPOLLIN, {u32=7, u64=38654705671}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 17, NULL)   = 0
recvfrom(17, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 8192
recvfrom(17, 0x7fffd9ec8d10, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 17, {EPOLLIN, {u32=17, u64=38654705681}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 11, NULL)   = 0
recvfrom(11, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 8192
recvfrom(11, 0x7fffd9ee8d30, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 11, {EPOLLIN, {u32=11, u64=38654705675}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=238, tv_nsec=747275000}) = 0
time(NULL)                              = 1559698606 (2019-06-05T09:36:46+0800)
madvise(0x7fffd9dcd000, 61440, MADV_DONTNEED) = 0
madvise(0x7fffd9e39000, 126976, MADV_DONTNEED) = 0
epoll_wait(3, [{EPOLLIN, {u32=8, u64=38654705672}}, {EPOLLIN, {u32=10, u64=38654705674}}, {EPOLLIN, {u32=12, u64=38654705676}}, {EPOLLIN, {u32=19, u64=38654705683}}, {EPOLLIN, {u32=18, u64=38654705682}}, {EPOLLIN, {u32=9, u64=38654705673}}, {EPOLLIN, {u32=7, u64=38654705671}}, {EPOLLIN, {u32=17, u64=38654705681}}], 4096, -1) = 8
epoll_ctl(3, EPOLL_CTL_DEL, 8, NULL)    = 0
recvfrom(8, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 20480
recvfrom(8, 0x7fffd9e28c70, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 8, {EPOLLIN, {u32=8, u64=38654705672}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 10, NULL)   = 0
recvfrom(10, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 12288
recvfrom(10, 0x7fffd9e88cd0, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 10, {EPOLLIN, {u32=10, u64=38654705674}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 12, NULL)   = 0
recvfrom(12, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 20480
recvfrom(12, 0x7fffd9f08d50, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 12, {EPOLLIN, {u32=12, u64=38654705676}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 19, NULL)   = 0
recvfrom(19, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 20480
recvfrom(19, 0x7fffd9f28d70, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 19, {EPOLLIN, {u32=19, u64=38654705683}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 18, NULL)   = 0
recvfrom(18, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 20480
recvfrom(18, 0x7fffd9f48d90, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 18, {EPOLLIN, {u32=18, u64=38654705682}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 9, NULL)    = 0
recvfrom(9, "V{\362b4\236\22\331\350H\357\313\374\314s\372N\3257\324\16\n\257\24H\217y\376\204P\3\206"..., 65536, 0, NULL, NULL) = 29504
recvfrom(9, "\23\1_\243'\240C\301\37649\31\314\255\236\344f\22\305_\357hojll0FS\240\t\254"..., 65536, 0, NULL, NULL) = 6439
close(9)                                = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc0221a0000, 2101248)         = 0
epoll_ctl(3, EPOLL_CTL_DEL, 7, NULL)    = 0
recvfrom(7, "3\231\3\372\375\"\271e\271cZ\343bb\251\331\314\227\323L\257\224\311\324\335\276(D\323\341\242\31"..., 65536, 0, NULL, NULL) = 31847
close(7)                                = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc021f90000, 2101248)         = 0
epoll_ctl(3, EPOLL_CTL_DEL, 17, NULL)   = 0
recvfrom(17, "3\231\3\372\375\"\271e\271cZ\343bb\251\331\314\227\323L\257\224\311\324\335\276(D\323\341\242\31"..., 65536, 0, NULL, NULL) = 31847
close(17)                               = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc021530000, 2101248)         = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=238, tv_nsec=783851000}) = 0
time(NULL)                              = 1559698606 (2019-06-05T09:36:46+0800)
epoll_wait(3, [{EPOLLIN, {u32=11, u64=38654705675}}, {EPOLLIN, {u32=8, u64=38654705672}}, {EPOLLIN, {u32=10, u64=38654705674}}, {EPOLLIN, {u32=12, u64=38654705676}}, {EPOLLIN, {u32=19, u64=38654705683}}, {EPOLLIN, {u32=18, u64=38654705682}}], 4096, -1) = 6
epoll_ctl(3, EPOLL_CTL_DEL, 11, NULL)   = 0
recvfrom(11, "3\231\3\372\375\"\271e\271cZ\343bb\251\331\314\227\323L\257\224\311\324\335\276(D\323\341\242\31"..., 65536, 0, NULL, NULL) = 31847
close(11)                               = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc021b60000, 2101248)         = 0
epoll_ctl(3, EPOLL_CTL_DEL, 8, NULL)    = 0
recvfrom(8, "\3442@o\362\340\10\240#\337=J2=\274\337\201\307=3O\324\342\35s7\\\16\7^\"\23"..., 65536, 0, NULL, NULL) = 19559
close(8)                                = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc0225c0000, 2101248)         = 0
epoll_ctl(3, EPOLL_CTL_DEL, 10, NULL)   = 0
recvfrom(10, "\374\346{V\311\306\246|0F\276\337\0\370`\22\224\7\253\312\306\200\262~\374\250\20'\317\233w\r"..., 65536, 0, NULL, NULL) = 27751
close(10)                               = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc0223b0000, 2101248)         = 0
epoll_ctl(3, EPOLL_CTL_DEL, 12, NULL)   = 0
recvfrom(12, "\3442@o\362\340\10\240#\337=J2=\274\337\201\307=3O\324\342\35s7\\\16\7^\"\23"..., 65536, 0, NULL, NULL) = 19559
close(12)                               = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc021950000, 2101248)         = 0
epoll_ctl(3, EPOLL_CTL_DEL, 19, NULL)   = 0
recvfrom(19, "\3442@o\362\340\10\240#\337=J2=\274\337\201\307=3O\324\342\35s7\\\16\7^\"\23"..., 65536, 0, NULL, NULL) = 19559
close(19)                               = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc021110000, 2101248)         = 0
epoll_ctl(3, EPOLL_CTL_DEL, 18, NULL)   = 0
recvfrom(18, "\3442@o\362\340\10\240#\337=J2=\274\337\201\307=3O\324\342\35s7\\\16\7^\"\23"..., 65536, 0, NULL, NULL) = 19559
close(18)                               = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc021320000, 2101248)         = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=238, tv_nsec=802835000}) = 0
time(NULL)                              = 1559698606 (2019-06-05T09:36:46+0800)
futex(0x7fffd9e01ce0, FUTEX_WAKE_PRIVATE, 2147483647) = 4
futex(0x7fffd9e01c90, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fc023ff09d0, FUTEX_WAIT, 56, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_DEL, 5, NULL)    = 0
close(5)                                = 0
close(6)                                = 0
close(2)                                = 0
close(1)                                = 0
close(0)                                = 0
munmap(0x7fc028fa0000, 2231560)         = 0
munmap(0x7fc028d1f000, 2624568)         = 0
close(3)                                = 0

以上所述就是小编给大家介绍的《Swoole 4.4：支持 CURL 协程化》，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对码农网的支持！

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[美] 菲利普·科特勒、费尔南多・德・巴斯 / 陈燕茹 / 中信出版社 / 2005-1 / 25.00元

《水平营销》阐明了相对纵向营销而言的的水平营销的框架和理论。引入横向思维来作为发现新的营销创意的又一平台，旨在获得消费者不可能向营销研究人员要求或建议的点子。而这些点子将帮助企业在产品愈加同质和超竞争的市场中立于不败之地。《水平营销》提到：是什么创新过程导致加油站里开起了超市？是什么创新过程导致取代外卖比萨服务的冷冻比萨的亮相？是什么创新过程导致巧克力糖里冒出了玩具......一起来看看《水平营销》这本书的介绍吧!

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