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/* Copyright libuv project 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 "task.h"
#include "uv.h"
#include <string.h>
/* See test-ipc.c */
void spawn_helper(uv_pipe_t* channel,
uv_process_t* process,
const char* helper);
#define NUM_WRITES 256
#define BUFFERS_PER_WRITE 3
#define BUFFER_SIZE 0x2000 /* 8 kb. */
#define BUFFER_CONTENT 42
#define XFER_SIZE (NUM_WRITES * BUFFERS_PER_WRITE * BUFFER_SIZE)
struct write_info {
uv_write_t write_req;
char buffers[BUFFER_SIZE][BUFFERS_PER_WRITE];
};
static uv_shutdown_t shutdown_req;
static size_t bytes_written;
static size_t bytes_read;
static void write_cb(uv_write_t* req, int status) {
struct write_info* write_info =
container_of(req, struct write_info, write_req);
ASSERT(status == 0);
bytes_written += BUFFERS_PER_WRITE * BUFFER_SIZE;
free(write_info);
}
static void shutdown_cb(uv_shutdown_t* req, int status) {
ASSERT(status == 0 || status == UV_ENOTCONN);
uv_close((uv_handle_t*) req->handle, NULL);
}
static void do_write(uv_stream_t* handle) {
struct write_info* write_info;
uv_buf_t bufs[BUFFERS_PER_WRITE];
size_t i;
int r;
write_info = malloc(sizeof *write_info);
ASSERT(write_info != NULL);
for (i = 0; i < BUFFERS_PER_WRITE; i++) {
memset(&write_info->buffers[i], BUFFER_CONTENT, BUFFER_SIZE);
bufs[i] = uv_buf_init(write_info->buffers[i], BUFFER_SIZE);
}
r = uv_write(
&write_info->write_req, handle, bufs, BUFFERS_PER_WRITE, write_cb);
ASSERT(r == 0);
}
static void alloc_cb(uv_handle_t* handle,
size_t suggested_size,
uv_buf_t* buf) {
buf->base = malloc(suggested_size);
buf->len = (int) suggested_size;
}
#ifndef _WIN32
#include <sys/types.h>
#include <unistd.h>
#endif
static void read_cb(uv_stream_t* handle, ssize_t nread, const uv_buf_t* buf) {
ssize_t i;
int r;
ASSERT(nread >= 0);
bytes_read += nread;
for (i = 0; i < nread; i++)
ASSERT(buf->base[i] == BUFFER_CONTENT);
free(buf->base);
if (bytes_read >= XFER_SIZE) {
r = uv_read_stop(handle);
ASSERT(r == 0);
r = uv_shutdown(&shutdown_req, handle, shutdown_cb);
ASSERT(r == 0);
}
}
static void do_writes_and_reads(uv_stream_t* handle) {
size_t i;
int r;
bytes_written = 0;
bytes_read = 0;
for (i = 0; i < NUM_WRITES; i++) {
do_write(handle);
}
r = uv_read_start(handle, alloc_cb, read_cb);
ASSERT(r == 0);
r = uv_run(handle->loop, UV_RUN_DEFAULT);
ASSERT(r == 0);
ASSERT(bytes_written == XFER_SIZE);
ASSERT(bytes_read == XFER_SIZE);
}
TEST_IMPL(ipc_heavy_traffic_deadlock_bug) {
uv_pipe_t pipe;
uv_process_t process;
spawn_helper(&pipe, &process, "ipc_helper_heavy_traffic_deadlock_bug");
do_writes_and_reads((uv_stream_t*) &pipe);
MAKE_VALGRIND_HAPPY();
return 0;
}
int ipc_helper_heavy_traffic_deadlock_bug(void) {
uv_pipe_t pipe;
int r;
r = uv_pipe_init(uv_default_loop(), &pipe, 1);
ASSERT(r == 0);
r = uv_pipe_open(&pipe, 0);
ASSERT(r == 0);
notify_parent_process();
do_writes_and_reads((uv_stream_t*) &pipe);
uv_sleep(100);
MAKE_VALGRIND_HAPPY();
return 0;
}
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