iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tools/nolibc/types: make FD_SETSIZE configurable

Browse Source 
The macro was hard-coded to 256 but it's common to see it redefined.
Let's support this and make sure we always allocate enough entries for
the cases where it wouldn't be multiple of 32.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Willy Tarreau 2022-02-13 09:53:01 +01:00 committed by Paul E. McKenney
parent 8cb98b3fce
commit 306c9fd4c6
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
tools/include/nolibc/types.h
View File

@ -45,7 +45,9 @@
#define DT_SOCK 0xc #define DT_SOCK 0xc
/* commonly an fd_set represents 256 FDs */ /* commonly an fd_set represents 256 FDs */
#ifndef FD_SETSIZE
#define FD_SETSIZE 256 #define FD_SETSIZE 256
#endif
/* Special FD used by all the *at functions */ /* Special FD used by all the *at functions */
#ifndef AT_FDCWD #ifndef AT_FDCWD
@ -72,7 +74,7 @@
/* for select() */ /* for select() */
typedef struct { typedef struct {
uint32_t fd32[FD_SETSIZE / 32]; uint32_t fd32[(FD_SETSIZE + 31) / 32];
} fd_set; } fd_set;
#define FD_CLR(fd, set) do { \ #define FD_CLR(fd, set) do { \
@ -101,7 +103,7 @@ typedef struct {
#define FD_ZERO(set) do { \ #define FD_ZERO(set) do { \
fd_set *__set = (set); \ fd_set *__set = (set); \
int __idx; \ int __idx; \
for (__idx = 0; __idx < FD_SETSIZE / 32; __idx ++) \ for (__idx = 0; __idx < (FD_SETSIZE+31) / 32; __idx ++) \
__set->fd32[__idx] = 0; \ __set->fd32[__idx] = 0; \
} while (0) } while (0)