diff options
Diffstat (limited to 'libc/misc/sysvipc')
| -rw-r--r-- | libc/misc/sysvipc/msgq.c | 53 |
1 files changed, 46 insertions, 7 deletions
diff --git a/libc/misc/sysvipc/msgq.c b/libc/misc/sysvipc/msgq.c index dac886f7f..27eb1ff92 100644 --- a/libc/misc/sysvipc/msgq.c +++ b/libc/misc/sysvipc/msgq.c @@ -1,6 +1,11 @@ #include <errno.h> #include <sys/msg.h> #include "ipc.h" +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include "sysdep-cancel.h" +#else +#define SINGLE_THREAD_P 1 +#endif #ifdef L_msgctl @@ -43,31 +48,65 @@ struct new_msg_buf{ #ifdef L_msgrcv #ifdef __NR_msgrcv -_syscall5(ssize_t, msgrcv, int, msqid, void *, msgp, size_t, msgsz, long int, msgtyp, int, msgflg) -#else -ssize_t msgrcv (int msqid, void *msgp, size_t msgsz, - long int msgtyp, int msgflg) +#define __NR___syscall_msgrcv __NR_msgrcv +static inline _syscall5(ssize_t, __syscall_msgrcv, int, msqid, void *, msgp, + size_t, msgsz, long int, msgtyp, int, msgflg) +#endif +static inline ssize_t do_msgrcv (int msqid, void *msgp, size_t msgsz, + long int msgtyp, int msgflg) { +#ifdef __NR_msgrcv + return __syscall_msgrcv(msqid, msgp, msgsz, msgtyp, msgflg); +#else struct new_msg_buf temp; temp.r_msgtyp = msgtyp; temp.oldmsg = msgp; return __syscall_ipc(IPCOP_msgrcv ,msqid ,msgsz ,msgflg ,&temp, 0); +#endif } +ssize_t msgrcv (int msqid, void *msgp, size_t msgsz, + long int msgtyp, int msgflg) +{ + if (SINGLE_THREAD_P) + return do_msgrcv(msqid, msgp, msgsz, msgtyp, msgflg); +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = do_msgrcv(msqid, msgp, msgsz, msgtyp, msgflg); + LIBC_CANCEL_RESET (oldtype); + return result; #endif +} #endif #ifdef L_msgsnd #ifdef __NR_msgsnd -_syscall4(int, msgsnd, int, msqid, const void *, msgp, size_t, msgsz, int, msgflg) -#else +#define __NR___syscall_msgsnd __NR_msgsnd +static inline _syscall4(int, __syscall_msgsnd, int, msqid, const void *, msgp, + size_t, msgsz, int, msgflg) +#endif /* Send message to message queue. */ -int msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg) +static inline int do_msgsnd (int msqid, const void *msgp, size_t msgsz, + int msgflg) { +#ifdef __NR_msgsnd + return __syscall_msgsnd(msqid, msgp, msgsz, msgflg); +#else return __syscall_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, (void *)msgp, 0); +#endif } +int msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg) +{ + if (SINGLE_THREAD_P) + return do_msgsnd(msqid, msgp, msgsz, msgflg); +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = do_msgsnd(msqid, msgp, msgsz, msgflg); + LIBC_CANCEL_RESET (oldtype); + return result; #endif +} #endif |