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Cygwin: Make gcc-specific code in <sys/cpuset.h> compiler-agnostic 

The current version of <sys/cpuset.h> cannot be compiled by Clang due to
the use of builtin versions of malloc, free, and memset.  Their presence
here was a dubious optimization anyway, so their usage has been
converted to standard library functions.

The use of __builtin_popcountl remains because Clang implements it just
like gcc does.  If/when some other compiler (Rust? Go?) runs into this
issue we can deal with specialized handling then.

The "#include <sys/cdefs>" here to define __inline can be removed since
both of the new includes sub-include it.

Addresses: https://cygwin.com/pipermail/cygwin/2023-July/253927.html
Fixes: 9cc910dd33a5 (Cygwin: Make <sys/cpuset.h> safe for c89 compilations)
Signed-off-by: Mark Geisert <mark@maxrnd.com>
This commit is contained in:
Mark Geisert 2023-07-09 00:59:22 -07:00 committed by Corinna Vinschen
parent 1a0530f3e0
commit df0f296f59
1 changed files with 5 additions and 4 deletions
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9
winsup/cygwin/include/sys/cpuset.h
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@ -9,7 +9,8 @@ details. */
#ifndef _SYS_CPUSET_H_
#define _SYS_CPUSET_H_
#include <sys/cdefs.h>
#include <stdlib.h>
#include <string.h>
#ifdef __cplusplus
extern "C" {
@ -44,14 +45,14 @@ __cpuset_alloc_size (int num)
static __inline cpu_set_t *
__cpuset_alloc (int num)
{
return (cpu_set_t *) __builtin_malloc (CPU_ALLOC_SIZE(num));
return (cpu_set_t *) malloc (CPU_ALLOC_SIZE(num));
}
#define CPU_FREE(set) __cpuset_free (set)
static __inline void
__cpuset_free (cpu_set_t *set)
{
__builtin_free (set);
free (set);
}
/* These _S macros operate on dynamically-sized cpu sets of size 'siz' bytes */
@ -59,7 +60,7 @@ __cpuset_free (cpu_set_t *set)
static __inline void
__cpuset_zero_s (size_t siz, cpu_set_t *set)
{
(void) __builtin_memset (set, 0, siz);
(void) memset (set, 0, siz);
}
#define CPU_SET_S(cpu, siz, set) __cpuset_set_s (cpu, siz, set)