diff options
author | Waldemar Brodkorb <wbx@openadk.org> | 2015-12-09 08:05:10 +0100 |
---|---|---|
committer | Waldemar Brodkorb <wbx@openadk.org> | 2015-12-17 20:35:19 +0100 |
commit | 219b69d72e878094f3ce03a9e70719709a9b4c43 (patch) | |
tree | c79c264c6e76d470e88ff57491ba3bf13c8aef46 /test | |
parent | 2e116b2eeea5f47ca26458b1962783baced2784c (diff) |
libc/stdio: Rework custom streams interface similar to glibc.
Save 20 bytes per FILE structure, avoid indirect call for
read/write/seek/close operations for normal streams.
Additionally, custom streams has fileno = -2 now, like in glibc.
bloat-o-meter report (UCLIBC_HAS_GLIBC_CUSTOM_STREAMS=y):
function old new delta
fopencookie 69 131 +62
ftello64 233 260 +27
fseeko64 298 319 +21
fclose 423 442 +19
.rodata 16696 16708 +12
fileno_unlocked 53 45 -8
__ns_name_pack 859 851 -8
vswscanf 184 144 -40
vdprintf 231 187 -44
vsscanf 210 151 -59
vswprintf 269 201 -68
vsnprintf 249 181 -68
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/7 up/down: 141/-295) Total: -154 bytes
Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
Diffstat (limited to 'test')
-rw-r--r-- | test/stdio/Makefile.in | 4 | ||||
-rw-r--r-- | test/stdio/tst-fmemopen.c | 53 |
2 files changed, 57 insertions, 0 deletions
diff --git a/test/stdio/Makefile.in b/test/stdio/Makefile.in index 0bfbd1362..14b5f19b9 100644 --- a/test/stdio/Makefile.in +++ b/test/stdio/Makefile.in @@ -2,3 +2,7 @@ # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. DODIFF_64bit := 1 + +ifeq ($(UCLIBC_HAS_GLIBC_CUSTOM_STREAMS),) +TESTS_DISABLED += tst-fmemopen +endif diff --git a/test/stdio/tst-fmemopen.c b/test/stdio/tst-fmemopen.c new file mode 100644 index 000000000..384faa1c9 --- /dev/null +++ b/test/stdio/tst-fmemopen.c @@ -0,0 +1,53 @@ +#include <string.h> +#include <stdio.h> +#include <stdlib.h> + +static char *text_input = "1 23 43"; + +static const char *good_answer = "1 529 1849 "; + + +static int +do_test (void) +{ + FILE *out, *in; + int v, s; + size_t size; + char *ptr; + + in = fmemopen(text_input, strlen(text_input), "r"); + if (in == NULL) { + perror("fmemopen"); + return 1; + } + + out = open_memstream(&ptr, &size); + if (out == NULL) { + perror("open_memstream"); + return 1; + } + + for (;;) { + s = fscanf(in, "%d", &v); + if (s <= 0) + break; + + s = fprintf(out, "%d ", v * v); + if (s == -1) { + puts("fprintf failed"); + exit(1); + } + } + fclose(in); + fclose(out); + + if (size != strlen(good_answer) || strcmp(good_answer, ptr) != 0) { + printf("failed: size=%zu; ptr=%s\n", size, ptr); + exit(1); + } + free(ptr); + exit(0); +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" |