tildefriends/deps/libuv/test/test-stdio-over-pipes.c

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/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "uv.h"
#include "task.h"
#include <stdlib.h>
#include <string.h>
static char exepath[1024];
static size_t exepath_size = 1024;
static char* args[3];
static uv_process_options_t options;
static int close_cb_called;
static int exit_cb_called;
static int on_read_cb_called;
static int after_write_cb_called;
static uv_pipe_t in;
static uv_pipe_t out;
static uv_loop_t* loop;
#define OUTPUT_SIZE 1024
static char output[OUTPUT_SIZE];
static int output_used;
static void close_cb(uv_handle_t* handle) {
close_cb_called++;
}
static void exit_cb(uv_process_t* process,
int64_t exit_status,
int term_signal) {
printf("exit_cb\n");
exit_cb_called++;
ASSERT_OK(exit_status);
ASSERT_OK(term_signal);
uv_close((uv_handle_t*)process, close_cb);
uv_close((uv_handle_t*)&in, close_cb);
uv_close((uv_handle_t*)&out, close_cb);
}
static void init_process_options(char* test, uv_exit_cb exit_cb) {
int r = uv_exepath(exepath, &exepath_size);
ASSERT_OK(r);
exepath[exepath_size] = '\0';
args[0] = exepath;
args[1] = test;
args[2] = NULL;
options.file = exepath;
options.args = args;
options.exit_cb = exit_cb;
}
static void on_alloc(uv_handle_t* handle,
size_t suggested_size,
uv_buf_t* buf) {
buf->base = output + output_used;
buf->len = OUTPUT_SIZE - output_used;
}
static void after_write(uv_write_t* req, int status) {
if (status) {
fprintf(stderr, "uv_write error: %s\n", uv_strerror(status));
ASSERT(0);
}
/* Free the read/write buffer and the request */
free(req);
after_write_cb_called++;
}
static void on_read(uv_stream_t* pipe, ssize_t nread, const uv_buf_t* rdbuf) {
uv_write_t* req;
uv_buf_t wrbuf;
int r;
ASSERT(nread > 0 || nread == UV_EOF);
if (nread > 0) {
output_used += nread;
if (output_used % 12 == 0) {
ASSERT_OK(memcmp("hello world\n", output, 12));
wrbuf = uv_buf_init(output, 12);
req = malloc(sizeof(*req));
r = uv_write(req, (uv_stream_t*) &in, &wrbuf, 1, after_write);
ASSERT_OK(r);
}
}
on_read_cb_called++;
}
static void test_stdio_over_pipes(int overlapped) {
int r;
uv_process_t process;
uv_stdio_container_t stdio[3];
loop = uv_default_loop();
init_process_options("stdio_over_pipes_helper", exit_cb);
uv_pipe_init(loop, &out, 0);
uv_pipe_init(loop, &in, 0);
options.stdio = stdio;
options.stdio[0].flags = UV_CREATE_PIPE | UV_READABLE_PIPE |
(overlapped ? UV_OVERLAPPED_PIPE : 0);
options.stdio[0].data.stream = (uv_stream_t*) &in;
options.stdio[1].flags = UV_CREATE_PIPE | UV_WRITABLE_PIPE |
(overlapped ? UV_OVERLAPPED_PIPE : 0);
options.stdio[1].data.stream = (uv_stream_t*) &out;
options.stdio[2].flags = UV_INHERIT_FD;
options.stdio[2].data.fd = 2;
options.stdio_count = 3;
r = uv_spawn(loop, &process, &options);
ASSERT_OK(r);
r = uv_read_start((uv_stream_t*) &out, on_alloc, on_read);
ASSERT_OK(r);
r = uv_run(loop, UV_RUN_DEFAULT);
ASSERT_OK(r);
ASSERT_GT(on_read_cb_called, 1);
ASSERT_EQ(2, after_write_cb_called);
ASSERT_EQ(1, exit_cb_called);
ASSERT_EQ(3, close_cb_called);
ASSERT_OK(memcmp("hello world\nhello world\n", output, 24));
ASSERT_EQ(24, output_used);
MAKE_VALGRIND_HAPPY(loop);
}
TEST_IMPL(stdio_over_pipes) {
test_stdio_over_pipes(0);
return 0;
}
TEST_IMPL(stdio_emulate_iocp) {
test_stdio_over_pipes(1);
return 0;
}
/* Everything here runs in a child process. */
static int on_pipe_read_called;
static int after_write_called;
static uv_pipe_t stdin_pipe1;
static uv_pipe_t stdout_pipe1;
static uv_pipe_t stdin_pipe2;
static uv_pipe_t stdout_pipe2;
static void on_pipe_read(uv_stream_t* pipe, ssize_t nread, const uv_buf_t* buf) {
ASSERT_GT(nread, 0);
ASSERT_OK(memcmp("hello world\n", buf->base, nread));
on_pipe_read_called++;
free(buf->base);
uv_read_stop(pipe);
}
static void after_pipe_write(uv_write_t* req, int status) {
ASSERT_OK(status);
after_write_called++;
}
static void on_read_alloc(uv_handle_t* handle,
size_t suggested_size,
uv_buf_t* buf) {
buf->base = malloc(suggested_size);
buf->len = suggested_size;
}
int stdio_over_pipes_helper(void) {
/* Write several buffers to test that the write order is preserved. */
char* buffers[] = {
"he",
"ll",
"o ",
"wo",
"rl",
"d",
"\n"
};
uv_write_t write_req[ARRAY_SIZE(buffers)];
uv_buf_t buf[ARRAY_SIZE(buffers)];
unsigned int i;
int j;
int r;
uv_loop_t* loop = uv_default_loop();
ASSERT_EQ(UV_NAMED_PIPE, uv_guess_handle(0));
ASSERT_EQ(UV_NAMED_PIPE, uv_guess_handle(1));
r = uv_pipe_init(loop, &stdin_pipe1, 0);
ASSERT_OK(r);
r = uv_pipe_init(loop, &stdout_pipe1, 0);
ASSERT_OK(r);
r = uv_pipe_init(loop, &stdin_pipe2, 0);
ASSERT_OK(r);
r = uv_pipe_init(loop, &stdout_pipe2, 0);
ASSERT_OK(r);
uv_pipe_open(&stdin_pipe1, 0);
uv_pipe_open(&stdout_pipe1, 1);
uv_pipe_open(&stdin_pipe2, 0);
uv_pipe_open(&stdout_pipe2, 1);
for (j = 0; j < 2; j++) {
/* Unref both stdio handles to make sure that all writes complete. */
uv_unref((uv_handle_t*) &stdin_pipe1);
uv_unref((uv_handle_t*) &stdout_pipe1);
uv_unref((uv_handle_t*) &stdin_pipe2);
uv_unref((uv_handle_t*) &stdout_pipe2);
for (i = 0; i < ARRAY_SIZE(buffers); i++) {
buf[i] = uv_buf_init((char*) buffers[i], strlen(buffers[i]));
}
for (i = 0; i < ARRAY_SIZE(buffers); i++) {
r = uv_write(&write_req[i],
(uv_stream_t*) (j == 0 ? &stdout_pipe1 : &stdout_pipe2),
&buf[i],
1,
after_pipe_write);
ASSERT_OK(r);
}
notify_parent_process();
uv_run(loop, UV_RUN_DEFAULT);
ASSERT_EQ(after_write_called, 7 * (j + 1));
ASSERT_EQ(on_pipe_read_called, j);
ASSERT_OK(close_cb_called);
uv_ref((uv_handle_t*) &stdout_pipe1);
uv_ref((uv_handle_t*) &stdin_pipe1);
uv_ref((uv_handle_t*) &stdout_pipe2);
uv_ref((uv_handle_t*) &stdin_pipe2);
r = uv_read_start((uv_stream_t*) (j == 0 ? &stdin_pipe1 : &stdin_pipe2),
on_read_alloc,
on_pipe_read);
ASSERT_OK(r);
uv_run(loop, UV_RUN_DEFAULT);
ASSERT_EQ(after_write_called, 7 * (j + 1));
ASSERT_EQ(on_pipe_read_called, j + 1);
ASSERT_OK(close_cb_called);
}
uv_close((uv_handle_t*)&stdin_pipe1, close_cb);
uv_close((uv_handle_t*)&stdout_pipe1, close_cb);
uv_close((uv_handle_t*)&stdin_pipe2, close_cb);
uv_close((uv_handle_t*)&stdout_pipe2, close_cb);
uv_run(loop, UV_RUN_DEFAULT);
ASSERT_EQ(14, after_write_called);
ASSERT_EQ(2, on_pipe_read_called);
ASSERT_EQ(4, close_cb_called);
MAKE_VALGRIND_HAPPY(loop);
return 0;
}