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authorWaldemar Brodkorb <wbx@openadk.org>2015-12-09 07:05:10 (GMT)
committerWaldemar Brodkorb <wbx@openadk.org>2015-12-17 19:35:19 (GMT)
commit219b69d72e878094f3ce03a9e70719709a9b4c43 (patch)
treec79c264c6e76d470e88ff57491ba3bf13c8aef46 /libc/stdio/_READ.c
parent2e116b2eeea5f47ca26458b1962783baced2784c (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 'libc/stdio/_READ.c')
-rw-r--r--libc/stdio/_READ.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libc/stdio/_READ.c b/libc/stdio/_READ.c
index 02601c0..a548dbb 100644
--- a/libc/stdio/_READ.c
+++ b/libc/stdio/_READ.c
@@ -27,7 +27,7 @@ size_t attribute_hidden __stdio_READ(register FILE *stream,
ssize_t rv = 0;
__STDIO_STREAM_VALIDATE(stream);
- assert(stream->__filedes >= -1);
+ assert(stream->__filedes >= -2);
assert(__STDIO_STREAM_IS_READING(stream));
assert(!__STDIO_STREAM_BUFFER_RAVAIL(stream)); /* Buffer must be empty. */
assert(!(stream->__modeflags & __FLAG_UNGOT));