1 /* Copyright (c) 2015, Ben Noordhuis <info@bnoordhuis.nl>
2 *
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
6 *
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
10 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
12 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
13 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
14 */
15
16 #include "uv.h"
17 #include "task.h"
18
19 #include <string.h> /* memset */
20 #ifndef _WIN32
21 #include <unistd.h> /* close */
22 #endif
23
24 struct thread_ctx {
25 uv_barrier_t barrier;
26 uv_file fd;
27 };
28
thread_main(void * arg)29 static void thread_main(void* arg) {
30 struct thread_ctx* ctx;
31 uv_fs_t req;
32 uv_buf_t bufs[1];
33 char buf[4096];
34 ssize_t n;
35 int uv_errno;
36
37 bufs[0] = uv_buf_init(buf, sizeof(buf));
38
39 ctx = arg;
40 uv_barrier_wait(&ctx->barrier);
41
42 uv_sleep(100); /* make sure we are forcing the writer to block a bit */
43 do {
44 uv_errno = uv_fs_read(NULL, &req, ctx->fd, bufs, 1, -1, NULL);
45 n = req.result;
46 uv_fs_req_cleanup(&req);
47 } while (n > 0 || (n == -1 && uv_errno == UV_EINTR));
48
49 ASSERT_OK(n);
50 }
51
52
53 #ifdef _WIN32
write_cb(uv_write_t * req,int status)54 static void write_cb(uv_write_t* req, int status) {
55 ASSERT_OK(status);
56 req->handle = NULL; /* signal completion of write_cb */
57 }
58 #endif
59
60 #ifdef _WIN32
61 #define NWRITES (10 << 16)
62 #else
63 #define NWRITES (10 << 20)
64 #endif
65
66
TEST_IMPL(pipe_set_non_blocking)67 TEST_IMPL(pipe_set_non_blocking) {
68 struct thread_ctx ctx;
69 uv_pipe_t pipe_handle;
70 uv_thread_t thread;
71 size_t nwritten;
72 char data[4096];
73 uv_buf_t buf;
74 uv_file fd[2];
75 int n;
76 #ifdef _WIN32
77 uv_write_t write_req;
78 #endif
79
80 ASSERT_OK(uv_pipe_init(uv_default_loop(), &pipe_handle, 0));
81 ASSERT_OK(uv_pipe(fd, 0, 0));
82 ASSERT_OK(uv_pipe_open(&pipe_handle, fd[1]));
83 ASSERT_OK(uv_stream_set_blocking((uv_stream_t*) &pipe_handle, 1));
84 fd[1] = -1; /* fd[1] is owned by pipe_handle now. */
85
86 ctx.fd = fd[0];
87 ASSERT_OK(uv_barrier_init(&ctx.barrier, 2));
88 ASSERT_OK(uv_thread_create(&thread, thread_main, &ctx));
89 uv_barrier_wait(&ctx.barrier);
90
91 buf.len = sizeof(data);
92 buf.base = data;
93 memset(data, '.', sizeof(data));
94
95 nwritten = 0;
96 while (nwritten < NWRITES) {
97 /* The stream is in blocking mode so uv_try_write() should always succeed
98 * with the exact number of bytes that we wanted written.
99 */
100 n = uv_try_write((uv_stream_t*) &pipe_handle, &buf, 1);
101 #ifdef _WIN32
102 ASSERT_EQ(n, UV_EAGAIN); /* E_NOTIMPL */
103 ASSERT_OK(uv_write(&write_req,
104 (uv_stream_t*) &pipe_handle,
105 &buf,
106 1,
107 write_cb));
108 ASSERT_NOT_NULL(write_req.handle);
109 ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_ONCE));
110 ASSERT_NULL(write_req.handle); /* check for signaled completion of write_cb */
111 n = buf.len;
112 #endif
113 ASSERT_EQ(n, sizeof(data));
114 nwritten += n;
115 }
116
117 uv_close((uv_handle_t*) &pipe_handle, NULL);
118 ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
119
120 ASSERT_OK(uv_thread_join(&thread));
121 #ifdef _WIN32
122 ASSERT_OK(_close(fd[0])); /* fd[1] is closed by uv_close(). */
123 #else
124 ASSERT_OK(close(fd[0])); /* fd[1] is closed by uv_close(). */
125 #endif
126 fd[0] = -1;
127 uv_barrier_destroy(&ctx.barrier);
128
129 MAKE_VALGRIND_HAPPY(uv_default_loop());
130 return 0;
131 }
132
