diff options
Diffstat (limited to 'libc/sysdeps/linux/common/msync.c')
| -rw-r--r-- | libc/sysdeps/linux/common/msync.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/libc/sysdeps/linux/common/msync.c b/libc/sysdeps/linux/common/msync.c index 494d4afd3..8882a4c91 100644 --- a/libc/sysdeps/linux/common/msync.c +++ b/libc/sysdeps/linux/common/msync.c @@ -11,7 +11,27 @@ #include <unistd.h> #include <sys/mman.h> +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <sysdep-cancel.h> +#else +#define SINGLE_THREAD_P 1 +#endif + +#define __NR___syscall_msync __NR_msync +static inline _syscall3(int, __syscall_msync, void *, addr, size_t, length, + int, flags); + extern __typeof(msync) __libc_msync; -#define __NR___libc_msync __NR_msync -_syscall3(int, __libc_msync, void *, addr, size_t, length, int, flags); +int __libc_msync(void * addr, size_t length, int flags) +{ + if (SINGLE_THREAD_P) + return __syscall_msync(addr, length, flags); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __syscall_msync(addr, length, flags); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif +} weak_alias(__libc_msync,msync) |