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17 commits

Author SHA1 Message Date
Felix Fietkau
0fe13749d0 utils: add helper functions useful for allocating a ring buffer 
This creates a mapping with twice the size of the allocated memory. The
second half of that mapping points at the same memory as the first half.

This is useful for ring buffers, because any read starting in the first
half can overflow into the second half as long as the read size is
smaller than the size of the memory area.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
 2016-12-28 22:44:30 +01:00
Felix Fietkau
a8e70c6d36 add a base64 implementation (based on FreeBSD code) 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2015-05-08 14:34:29 +02:00
Yousong Zhou
ad9aa180d3 utils: use clock_get_time() for clock_gettime() on Apple. 
It turns out that mach_absolute_time() is not monotonic at all.  While
at it, convert the CLOCK_REALTIME implementation to using
clock_get_time() as well.

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
 2015-01-21 20:11:30 +01:00
Felix Fietkau
9203927e58 utils: add a bitfield size macro 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2014-04-30 13:27:03 +02:00
Felix Fietkau
4f44401ae8 utils: add __constructor and __hidden defines 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2014-03-18 14:04:06 +01:00
Felix Fietkau
a2453456f2 utils.h: fix name collisions in __u_bswap16 with using "val" both inside the macro and as argument 
Reported-by: Markus Stenberg <markus.stenberg@iki.fi>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2013-10-24 11:33:23 +02:00
Felix Fietkau
e5032709b2 utils: add bitfield inline ops 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2013-06-10 13:37:14 +02:00
Felix Fietkau
bd47d85d38 utils: make le16 endian conversion functions work with arguments that have side effects 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2013-02-14 23:39:57 +01:00
Felix Fietkau
fcd5ba8fbd utils.h: make 16-bit little endian conversion robust against pointer subtraction arguments 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2013-02-14 22:02:56 +01:00
Felix Fietkau
d01922625d utils: add little-endian swap helpers 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2013-02-13 12:35:19 +01:00
Felix Fietkau
e5a40544ec utils: prefer using gccs builtin swapping functions which support constant folding 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2013-02-11 22:08:07 +01:00
Felix Fietkau
5ad190fccf utils: move endian swap helpers and __packed definition to utils.h 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2013-02-11 21:46:41 +01:00
Felix Fietkau
aa4f3bde06 uloop: add a clock_gettime() implementation for mac os x 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2013-01-06 02:42:58 +01:00
Felix Fietkau
7157c3a4df utils: add BUILD_BUG_ON (similar to the one in the linux kernel) 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2013-01-01 16:10:44 +01:00
Felix Fietkau
59000546c0 utils: make it unnecessary to specify the last NULL argument for calloc_a 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2012-12-31 15:40:12 +01:00
Felix Fietkau
9c8ab5d64c utils: move ARRAY_SIZE from uloop to utils.h 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2012-12-31 15:24:27 +01:00
Felix Fietkau
d03a6a27c7 add utils.c, containing a calloc-like function to allocate multiple chunks with different sizes in one block and return pointers 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 2012-12-31 15:24:26 +01:00