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-rw-r--r--tools/perf/tests/api-io.c304
1 files changed, 304 insertions, 0 deletions
diff --git a/tools/perf/tests/api-io.c b/tools/perf/tests/api-io.c
new file mode 100644
index 000000000000..2ada86ad6084
--- /dev/null
+++ b/tools/perf/tests/api-io.c
@@ -0,0 +1,304 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "debug.h"
+#include "tests.h"
+#include <api/io.h>
+#include <linux/kernel.h>
+
+#define TEMPL "/tmp/perf-test-XXXXXX"
+
+#define EXPECT_EQUAL(val, expected) \
+do { \
+ if (val != expected) { \
+ pr_debug("%s:%d: %d != %d\n", \
+ __FILE__, __LINE__, val, expected); \
+ ret = -1; \
+ } \
+} while (0)
+
+#define EXPECT_EQUAL64(val, expected) \
+do { \
+ if (val != expected) { \
+ pr_debug("%s:%d: %lld != %lld\n", \
+ __FILE__, __LINE__, val, expected); \
+ ret = -1; \
+ } \
+} while (0)
+
+static int make_test_file(char path[PATH_MAX], const char *contents)
+{
+ ssize_t contents_len = strlen(contents);
+ int fd;
+
+ strcpy(path, TEMPL);
+ fd = mkstemp(path);
+ if (fd < 0) {
+ pr_debug("mkstemp failed");
+ return -1;
+ }
+ if (write(fd, contents, contents_len) < contents_len) {
+ pr_debug("short write");
+ close(fd);
+ unlink(path);
+ return -1;
+ }
+ close(fd);
+ return 0;
+}
+
+static int setup_test(char path[PATH_MAX], const char *contents,
+ size_t buf_size, struct io *io)
+{
+ if (make_test_file(path, contents))
+ return -1;
+
+ io->fd = open(path, O_RDONLY);
+ if (io->fd < 0) {
+ pr_debug("Failed to open '%s'\n", path);
+ unlink(path);
+ return -1;
+ }
+ io->buf = malloc(buf_size);
+ if (io->buf == NULL) {
+ pr_debug("Failed to allocate memory");
+ close(io->fd);
+ unlink(path);
+ return -1;
+ }
+ io__init(io, io->fd, io->buf, buf_size);
+ return 0;
+}
+
+static void cleanup_test(char path[PATH_MAX], struct io *io)
+{
+ free(io->buf);
+ close(io->fd);
+ unlink(path);
+}
+
+static int do_test_get_char(const char *test_string, size_t buf_size)
+{
+ char path[PATH_MAX];
+ struct io io;
+ int ch, ret = 0;
+ size_t i;
+
+ if (setup_test(path, test_string, buf_size, &io))
+ return -1;
+
+ for (i = 0; i < strlen(test_string); i++) {
+ ch = io__get_char(&io);
+
+ EXPECT_EQUAL(ch, test_string[i]);
+ EXPECT_EQUAL(io.eof, false);
+ }
+ ch = io__get_char(&io);
+ EXPECT_EQUAL(ch, -1);
+ EXPECT_EQUAL(io.eof, true);
+
+ cleanup_test(path, &io);
+ return ret;
+}
+
+static int test_get_char(void)
+{
+ int i, ret = 0;
+ size_t j;
+
+ static const char *const test_strings[] = {
+ "12345678abcdef90",
+ "a\nb\nc\nd\n",
+ "\a\b\t\v\f\r",
+ };
+ for (i = 0; i <= 10; i++) {
+ for (j = 0; j < ARRAY_SIZE(test_strings); j++) {
+ if (do_test_get_char(test_strings[j], 1 << i))
+ ret = -1;
+ }
+ }
+ return ret;
+}
+
+static int do_test_get_hex(const char *test_string,
+ __u64 val1, int ch1,
+ __u64 val2, int ch2,
+ __u64 val3, int ch3,
+ bool end_eof)
+{
+ char path[PATH_MAX];
+ struct io io;
+ int ch, ret = 0;
+ __u64 hex;
+
+ if (setup_test(path, test_string, 4, &io))
+ return -1;
+
+ ch = io__get_hex(&io, &hex);
+ EXPECT_EQUAL64(hex, val1);
+ EXPECT_EQUAL(ch, ch1);
+
+ ch = io__get_hex(&io, &hex);
+ EXPECT_EQUAL64(hex, val2);
+ EXPECT_EQUAL(ch, ch2);
+
+ ch = io__get_hex(&io, &hex);
+ EXPECT_EQUAL64(hex, val3);
+ EXPECT_EQUAL(ch, ch3);
+
+ EXPECT_EQUAL(io.eof, end_eof);
+
+ cleanup_test(path, &io);
+ return ret;
+}
+
+static int test_get_hex(void)
+{
+ int ret = 0;
+
+ if (do_test_get_hex("12345678abcdef90",
+ 0x12345678abcdef90, -1,
+ 0, -1,
+ 0, -1,
+ true))
+ ret = -1;
+
+ if (do_test_get_hex("1\n2\n3\n",
+ 1, '\n',
+ 2, '\n',
+ 3, '\n',
+ false))
+ ret = -1;
+
+ if (do_test_get_hex("12345678ABCDEF90;a;b",
+ 0x12345678abcdef90, ';',
+ 0xa, ';',
+ 0xb, -1,
+ true))
+ ret = -1;
+
+ if (do_test_get_hex("0x1x2x",
+ 0, 'x',
+ 1, 'x',
+ 2, 'x',
+ false))
+ ret = -1;
+
+ if (do_test_get_hex("x1x",
+ 0, -2,
+ 1, 'x',
+ 0, -1,
+ true))
+ ret = -1;
+
+ if (do_test_get_hex("10000000000000000000000000000abcdefgh99i",
+ 0xabcdef, 'g',
+ 0, -2,
+ 0x99, 'i',
+ false))
+ ret = -1;
+
+ return ret;
+}
+
+static int do_test_get_dec(const char *test_string,
+ __u64 val1, int ch1,
+ __u64 val2, int ch2,
+ __u64 val3, int ch3,
+ bool end_eof)
+{
+ char path[PATH_MAX];
+ struct io io;
+ int ch, ret = 0;
+ __u64 dec;
+
+ if (setup_test(path, test_string, 4, &io))
+ return -1;
+
+ ch = io__get_dec(&io, &dec);
+ EXPECT_EQUAL64(dec, val1);
+ EXPECT_EQUAL(ch, ch1);
+
+ ch = io__get_dec(&io, &dec);
+ EXPECT_EQUAL64(dec, val2);
+ EXPECT_EQUAL(ch, ch2);
+
+ ch = io__get_dec(&io, &dec);
+ EXPECT_EQUAL64(dec, val3);
+ EXPECT_EQUAL(ch, ch3);
+
+ EXPECT_EQUAL(io.eof, end_eof);
+
+ cleanup_test(path, &io);
+ return ret;
+}
+
+static int test_get_dec(void)
+{
+ int ret = 0;
+
+ if (do_test_get_dec("12345678abcdef90",
+ 12345678, 'a',
+ 0, -2,
+ 0, -2,
+ false))
+ ret = -1;
+
+ if (do_test_get_dec("1\n2\n3\n",
+ 1, '\n',
+ 2, '\n',
+ 3, '\n',
+ false))
+ ret = -1;
+
+ if (do_test_get_dec("12345678;1;2",
+ 12345678, ';',
+ 1, ';',
+ 2, -1,
+ true))
+ ret = -1;
+
+ if (do_test_get_dec("0x1x2x",
+ 0, 'x',
+ 1, 'x',
+ 2, 'x',
+ false))
+ ret = -1;
+
+ if (do_test_get_dec("x1x",
+ 0, -2,
+ 1, 'x',
+ 0, -1,
+ true))
+ ret = -1;
+
+ if (do_test_get_dec("10000000000000000000000000000000000000000000000000000000000123456789ab99c",
+ 123456789, 'a',
+ 0, -2,
+ 99, 'c',
+ false))
+ ret = -1;
+
+ return ret;
+}
+
+int test__api_io(struct test *test __maybe_unused,
+ int subtest __maybe_unused)
+{
+ int ret = 0;
+
+ if (test_get_char())
+ ret = TEST_FAIL;
+ if (test_get_hex())
+ ret = TEST_FAIL;
+ if (test_get_dec())
+ ret = TEST_FAIL;
+ return ret;
+}
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