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Fix MAP_JIT issues on Mac. Patch by Carlo Arenas.

This commit is contained in:
Zoltán Herczeg 2018-12-13 13:23:59 +00:00
parent ed63958dad
commit 5bec7dd3b0
1 changed files with 14 additions and 15 deletions
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29
src/sljit/sljitExecAllocator.c
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@ -96,32 +96,31 @@ static SLJIT_INLINE void free_chunk(void *chunk, sljit_uw size)
#ifdef MAP_JIT
#ifdef __APPLE__
#include <sys/utsname.h>
#endif /* __APPLE__ */
static SLJIT_INLINE int get_map_jit_flag()
{
#ifdef TARGET_OS_MAC
#ifdef __APPLE__
/* On macOS systems, returns MAP_JIT if it is defined _and_ we're running on a version
of macOS where it's OK to have more than one JIT block. On non-macOS systems, returns
MAP_JIT if it is defined. */
static int map_jit_flag = -1;
static dispatch_once_t _inited;
static int map_jit_flag;
if (map_jit_flag == -1) {
struct utsname name;
dispatch_once(&_inited,
^() {
struct utsname name;
uname(&name);
uname(&name);
/* Kernel version for 10.14.0 (Mojave) */
if (atoi(name.release) >= 18)
map_jit_flag = MAP_JIT;
}
);
/* Kernel version for 10.14.0 (Mojave) */
map_jit_flag = (atoi(name.release) >= 18) ? MAP_JIT : 0;
}
return map_jit_flag;
#else /* !TARGET_OS_MAC */
#else /* !__APPLE__ */
return MAP_JIT;
#endif /* TARGET_OS_MAC */
#endif /* __APPLE__ */
}
#endif /* MAP_JIT */