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/*
* Copyright (c) 2010-2011 Apple Inc. All rights reserved.
*
* @APPLE_APACHE_LICENSE_HEADER_START@
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @APPLE_APACHE_LICENSE_HEADER_END@
*/
#include <sys/stat.h>
#include <sys/types.h>
#include <assert.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
#include <fts.h>
#include <sys/param.h>
#include <unistd.h>
#endif
#include <errno.h>
#ifdef __APPLE__
#include <mach/mach.h>
#include <mach/mach_time.h>
#include <libkern/OSAtomic.h>
#include <TargetConditionals.h>
#endif
#include <Block.h>
#include <dispatch/dispatch.h>
#include <bsdtests.h>
#include "dispatch_test.h"
#ifndef DISPATCHTEST_IO
#if DISPATCH_API_VERSION >= 20100226 && DISPATCH_API_VERSION != 20101110
#define DISPATCHTEST_IO 1
#endif
#endif
static void
test_fin(void *cxt)
{
test_ptr("test_fin run", cxt, cxt);
test_stop();
}
#if DISPATCHTEST_IO
/*
Basic way of implementing dispatch_io's dispatch_read without
using dispatch channel api's
*/
static void
dispatch_read2(dispatch_fd_t fd,
size_t length,
dispatch_queue_t queue,
void (^handler)(dispatch_data_t d, int error))
{
#if !defined(_WIN32)
if (fcntl(fd, F_SETFL, O_NONBLOCK) != 0) {
test_errno("fcntl O_NONBLOCK", errno, 0);
test_stop();
}
#endif
dispatch_source_t reader = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ,
(uintptr_t)fd, 0, queue);
test_ptr_notnull("reader", reader);
__block size_t bytes_read = 0;
__block dispatch_data_t data = dispatch_data_empty;
__block int err = 0;
dispatch_source_set_event_handler(reader, ^{
const ssize_t bufsiz = 1024*512; // 512KB buffer
char *buffer = NULL;
#if defined(_WIN32)
SYSTEM_INFO si;
GetSystemInfo(&si);
size_t pagesize = (size_t)si.dwPageSize;
buffer = _aligned_malloc(bufsiz, pagesize);
#else
size_t pagesize = (size_t)sysconf(_SC_PAGESIZE);
posix_memalign((void **)&buffer, pagesize, bufsiz);
#endif
ssize_t actual = dispatch_test_fd_read(fd, buffer, bufsiz);
if (actual == -1) {
err = errno;
}
if (actual > 0) {
bytes_read += (size_t)actual;
#if defined(_WIN32)
dispatch_data_t tmp_data = dispatch_data_create(buffer, (size_t)actual,
NULL, ^{ _aligned_free(buffer); });
#else
dispatch_data_t tmp_data = dispatch_data_create(buffer, (size_t)actual,
NULL, DISPATCH_DATA_DESTRUCTOR_FREE);
#endif
dispatch_data_t concat = dispatch_data_create_concat(data,tmp_data);
dispatch_release(tmp_data);
dispatch_release(data);
data = concat;
}
// If we reached EOF or we read as much we were asked to.
if (actual < bufsiz || bytes_read >= length) {
char foo[2];
actual = dispatch_test_fd_read(fd, foo, 2);
bytes_read += (size_t)actual;
// confirm EOF condition
test_long("EOF", actual, 0);
dispatch_source_cancel(reader);
}
});
dispatch_source_set_cancel_handler(reader, ^{
dispatch_data_t d = dispatch_data_create_subrange(data, 0, length);
dispatch_release(data);
handler(d, err);
dispatch_release(d);
dispatch_release(reader);
});
dispatch_resume(reader);
}
static void
test_read(void)
{
char *path = dispatch_test_get_large_file();
dispatch_fd_t fd = dispatch_test_fd_open(path, O_RDONLY);
if (fd == -1) {
test_errno("open", errno, 0);
test_stop();
}
dispatch_test_release_large_file(path);
free(path);
#ifdef F_NOCACHE
if (fcntl(fd, F_NOCACHE, 1)) {
test_errno("fcntl F_NOCACHE", errno, 0);
test_stop();
}
#else
// investigate what the impact of lack of file cache disabling has
// for this test
#endif
size_t size = (size_t)dispatch_test_fd_lseek(fd, 0, SEEK_END);
dispatch_test_fd_lseek(fd, 0, SEEK_SET);
dispatch_group_t g = dispatch_group_create();
void (^b)(dispatch_data_t, int) = ^(dispatch_data_t d, int error) {
test_errno("read error", error, 0);
test_sizet("dispatch data size", d ? dispatch_data_get_size(d) : 0, size);
if (d) {
const void *contig_buf;
size_t contig_size;
dispatch_data_t tmp = dispatch_data_create_map(d, &contig_buf,
&contig_size);
test_sizet("dispatch data contig size", contig_size, size);
if (contig_size) {
// Validate the copied buffer is similar to what we expect
char *buf = (char*)malloc(size);
dispatch_test_fd_pread(fd, buf, size, 0);
test_long("dispatch data contents", memcmp(buf, contig_buf,
size), 0);
free(buf);
}
dispatch_release(tmp);
}
dispatch_group_leave(g);
};
dispatch_group_enter(g);
dispatch_read(fd, SIZE_MAX, dispatch_get_global_queue(0, 0), b); // rdar://problem/7795794
test_group_wait(g);
dispatch_test_fd_lseek(fd, 0, SEEK_SET);
if (dispatch_test_check_evfilt_read_for_fd(fd)) {
dispatch_group_enter(g);
dispatch_read2(fd, size, dispatch_get_global_queue(0,0), b);
test_group_wait(g);
} else {
test_skip("EVFILT_READ kevent not firing for test file");
}
dispatch_release(g);
dispatch_test_fd_close(fd);
}
static void
test_read_write(void)
{
#if defined(_WIN32)
char *path_in = dispatch_test_get_large_file();
char path_out[] = "dispatchtest_io.XXXXXX";
dispatch_fd_t in = dispatch_test_fd_open(path_in, O_RDONLY);
if (in == -1) {
test_errno("open", errno, 0);
test_stop();
}
dispatch_test_release_large_file(path_in);
free(path_in);
size_t siz_in = (size_t)dispatch_test_fd_lseek(in, 0, SEEK_END);
dispatch_test_fd_lseek(in, 0, SEEK_SET);
#else
const char *path_in = "/dev/urandom";
char path_out[] = "/tmp/dispatchtest_io.XXXXXX";
const size_t siz_in = 10240;
dispatch_fd_t in = dispatch_test_fd_open(path_in, O_RDONLY);
if (in == -1) {
test_errno("open", errno, 0);
test_stop();
}
#endif
dispatch_fd_t out = mkstemp(path_out);
if (out == -1) {
test_errno("mkstemp", errno, 0);
test_stop();
}
if (unlink(path_out) == -1) {
test_errno("unlink", errno, 0);
test_stop();
}
dispatch_queue_t q = dispatch_get_global_queue(0,0);
dispatch_group_t g = dispatch_group_create();
dispatch_group_enter(g);
__block dispatch_data_t data;
dispatch_read(in, siz_in, q, ^(dispatch_data_t data_in, int err_in) {
if (err_in) {
test_errno("dispatch_read", err_in, 0);
test_stop();
}
dispatch_test_fd_close(in);
size_t siz_out = dispatch_data_get_size(data_in);
test_sizet("read size", siz_out, siz_in);
dispatch_retain(data_in);
data = data_in;
dispatch_write(out, data, q, ^(dispatch_data_t data_out, int err_out) {
if (err_out || data_out) {
test_errno("dispatch_write", err_out, 0);
test_stop();
}
dispatch_test_fd_lseek(out, 0, SEEK_SET);
dispatch_read(out, siz_out, q,
^(dispatch_data_t cmp, int err_cmp) {
if (err_cmp) {
test_errno("dispatch_read", err_cmp, 0);
test_stop();
}
dispatch_test_fd_close(out);
size_t siz_cmp = dispatch_data_get_size(cmp);
test_sizet("readback size", siz_cmp, siz_out);
const void *data_buf, *cmp_buf;
dispatch_data_t data_map, cmp_map;
data_map = dispatch_data_create_map(data, &data_buf, NULL);
cmp_map = dispatch_data_create_map(cmp, &cmp_buf, NULL);
test_long("readback memcmp",
memcmp(data_buf, cmp_buf, MIN(siz_out, siz_cmp)), 0);
dispatch_release(cmp_map);
dispatch_release(data_map);
dispatch_release(data);
dispatch_group_leave(g);
});
});
});
test_group_wait(g);
dispatch_release(g);
}
static void
test_read_writes(void) // <rdar://problem/7785143>
{
const size_t chunks_out = 320;
const size_t siz_chunk = 32, siz_in = siz_chunk * chunks_out;
#if defined(_WIN32)
char *path_in = dispatch_test_get_large_file();
char path_out[] = "dispatchtest_io.XXXXXX";
dispatch_fd_t in = dispatch_test_fd_open(path_in, O_RDONLY);
if (in == -1) {
test_errno("open", errno, 0);
test_stop();
}
dispatch_test_release_large_file(path_in);
free(path_in);
#else
const char *path_in = "/dev/urandom";
char path_out[] = "/tmp/dispatchtest_io.XXXXXX";
dispatch_fd_t in = dispatch_test_fd_open(path_in, O_RDONLY);
if (in == -1) {
test_errno("open", errno, 0);
test_stop();
}
#endif
dispatch_fd_t out = mkstemp(path_out);
if (out == -1) {
test_errno("mkstemp", errno, 0);
test_stop();
}
if (unlink(path_out) == -1) {
test_errno("unlink", errno, 0);
test_stop();
}
dispatch_queue_t q = dispatch_get_global_queue(0,0);
dispatch_group_t g = dispatch_group_create();
dispatch_group_enter(g);
__block dispatch_data_t data;
__block size_t siz_out;
dispatch_read(in, siz_in, q, ^(dispatch_data_t data_in, int err_in) {
if (err_in) {
test_errno("dispatch_read", err_in, 0);
test_stop();
}
dispatch_test_fd_close(in);
siz_out = dispatch_data_get_size(data_in);
test_sizet("read size", siz_out, siz_in);
dispatch_retain(data_in);
data = data_in;
dispatch_data_t data_chunks[chunks_out];
size_t i;
for (i = 0; i < chunks_out; i++) {
data_chunks[i] = dispatch_data_create_subrange(data_in,
i * siz_chunk, siz_chunk);
}
for (i = 0; i < chunks_out; i++) {
dispatch_data_t d = data_chunks[i];
dispatch_group_enter(g);
dispatch_write(out, d, q, ^(dispatch_data_t data_out,
int err_out) {
if (err_out || data_out) {
test_errno("dispatch_write", err_out, 0);
test_stop();
}
dispatch_group_leave(g);
});
}
for (i = 0; i < chunks_out; i++) {
dispatch_release(data_chunks[i]);
}
dispatch_group_leave(g);
});
test_group_wait(g);
dispatch_group_enter(g);
dispatch_test_fd_lseek(out, 0, SEEK_SET);
dispatch_read(out, siz_in, q,
^(dispatch_data_t cmp, int err_cmp) {
if (err_cmp) {
test_errno("dispatch_read", err_cmp, 0);
test_stop();
}
dispatch_test_fd_close(out);
size_t siz_cmp = dispatch_data_get_size(cmp);
test_sizet("readback size", siz_cmp, siz_out);
const void *data_buf, *cmp_buf;
dispatch_data_t data_map, cmp_map;
data_map = dispatch_data_create_map(data, &data_buf, NULL);
cmp_map = dispatch_data_create_map(cmp, &cmp_buf, NULL);
test_long("readback memcmp",
memcmp(data_buf, cmp_buf, MIN(siz_out, siz_cmp)), 0);
dispatch_release(cmp_map);
dispatch_release(data_map);
dispatch_release(data);
dispatch_group_leave(g);
});
test_group_wait(g);
dispatch_release(g);
}
#if !defined(_WIN32)
static void
test_writes_reads_eagain(void) // rdar://problem/8333366
{
int in = open("/dev/urandom", O_RDONLY);
if (in == -1) {
test_errno("open", errno, 0);
test_stop();
}
int fds[2], *fd = fds;
if(pipe(fd) == -1) {
test_errno("pipe", errno, 0);
test_stop();
}
const size_t chunks = 320;
const size_t siz_chunk = 32, siz = siz_chunk * chunks;
dispatch_queue_t q = dispatch_get_global_queue(0,0);
dispatch_group_t g = dispatch_group_create();
__block size_t siz_acc = 0, deliveries = 0;
__block void (^b)(dispatch_data_t, int);
b = Block_copy(^(dispatch_data_t data, int err) {
if (err) {
test_errno("dispatch_read", err, 0);
test_stop();
}
deliveries++;
siz_acc += dispatch_data_get_size(data);
if (siz_acc < siz) {
dispatch_group_enter(g);
dispatch_read(*fd, siz, q, b);
}
dispatch_group_leave(g);
});
dispatch_group_enter(g);
dispatch_read(*fd, siz, q, b);
char *buf[siz_chunk];
size_t i;
for (i = 0; i < chunks; i++) {
ssize_t s = read(in, buf, siz_chunk);
if (s < (ssize_t)siz_chunk) {
test_errno("read", errno, 0);
test_stop();
}
s = write(*(fd+1), buf, siz_chunk);
if (s < (ssize_t)siz_chunk) {
test_errno("write", errno, 0);
test_stop();
}
usleep(10000);
}
close(in);
close(*(fd+1));
test_group_wait(g);
test_sizet("dispatch_read deliveries", deliveries, chunks);
test_sizet("dispatch_read data size", siz_acc, siz);
close(*fd);
Block_release(b);
dispatch_release(g);
}
#endif
#endif // DISPATCHTEST_IO
int
main(void)
{
dispatch_test_start("Dispatch IO Convenience Read/Write");
dispatch_async(dispatch_get_main_queue(), ^{
#if DISPATCHTEST_IO
test_read();
test_read_write();
test_read_writes();
#if !defined(_WIN32)
test_writes_reads_eagain();
#endif
#endif
test_fin(NULL);
});
dispatch_main();
}
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