Swoole 4.4：支持 CURL 协程化

栏目: PHP · 发布时间: 6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

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涂子沛 / 中信出版集团 / 2018-9 / 88.00元

从量数、据数、普适记录、人脸识别、以图搜车，到雾计算、城市大脑、单粒度治理、无匿名社会、量子思维……作为中国研究大数据的权威专家，作者在《数文明》一书中，以大数据为核心元素，抽丝剥茧，深入地阐述了这个大数据时代的文明社会——一个全新的数文明时代。将大数据与人类文明融合在一起，这本书提供给我们的不仅是一种全新的叙事结构，它还将突破你的认知边界和思维极限，给你提供一个应对这个世界的全新的认知方......一起来看看《数文明》这本书的介绍吧!

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