yuzu/unicorn
1
0
Fork 0
mirror of https://github.com/yuzu-emu/unicorn.git synced 2025-04-17 23:51:41 +00:00
Code Issues Packages Projects Releases Wiki Activity

bitmap: add bitmap_copy_and_clear_atomic

Browse source 
Backports commit d6eb1413920affb7be3df9982682dd183a805dd7 from qemu
This commit is contained in:
Gerd Hoffmann 2018-03-02 15:08:38 -05:00 committed by Lioncash
parent b8b70dfcd2
commit 108354cc4a
No known key found for this signature in database
GPG key ID: 4E3C3CC1031BA9C7
2 changed files with 13 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
qemu/include/qemu/bitmap.h
View file

@ -67,6 +67,8 @@ void bitmap_set(unsigned long *map, long i, long len);
void bitmap_set_atomic(unsigned long *map, long i, long len);
void bitmap_clear(unsigned long *map, long start, long nr);
bool bitmap_test_and_clear_atomic(unsigned long *map, long start, long nr);
void bitmap_copy_and_clear_atomic(unsigned long *dst, unsigned long *src,
long nr);
static inline unsigned long *bitmap_zero_extend(unsigned long *old,
long old_nbits, long new_nbits)

11
qemu/util/bitmap.c
View file

@ -137,3 +137,14 @@ bool bitmap_test_and_clear_atomic(unsigned long *map, long start, long nr)
return dirty != 0;
}
void bitmap_copy_and_clear_atomic(unsigned long *dst, unsigned long *src,
long nr)
{
while (nr > 0) {
*dst = atomic_xchg(src, 0);
dst++;
src++;
nr -= BITS_PER_LONG;
}
}