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| author | jhb <jhb@FreeBSD.org> | 2003-03-24 21:15:35 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2003-03-24 21:15:35 +0000 |
| commit | 98a481610a9dcb442e9c2e851c6ef2a330027e45 (patch) | |
| tree | 41fad1aa97bccfd68308cf8a8ff0de8b8f243493 /sys/kern/uipc_sem.c | |
| parent | 01298a9735ccfad61628107327cfb25e49f8248b (diff) | |
| download | FreeBSD-src-98a481610a9dcb442e9c2e851c6ef2a330027e45.zip FreeBSD-src-98a481610a9dcb442e9c2e851c6ef2a330027e45.tar.gz | |
Replace the at_fork, at_exec, and at_exit functions with the slightly more
flexible process_fork, process_exec, and process_exit eventhandlers. This
reduces code duplication and also means that I don't have to go duplicate
the eventhandler locking three more times for each of at_fork, at_exec, and
at_exit.
Reviewed by: phk, jake, almost complete silence on arch@
Diffstat (limited to 'sys/kern/uipc_sem.c')
| -rw-r--r-- | sys/kern/uipc_sem.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/sys/kern/uipc_sem.c b/sys/kern/uipc_sem.c index 538ff67..9f59626 100644 --- a/sys/kern/uipc_sem.c +++ b/sys/kern/uipc_sem.c @@ -31,6 +31,7 @@ #include <sys/param.h> #include <sys/systm.h> #include <sys/sysproto.h> +#include <sys/eventhandler.h> #include <sys/kernel.h> #include <sys/proc.h> #include <sys/lock.h> @@ -57,7 +58,7 @@ static void sem_free(struct ksem *ksnew); static int sem_perm(struct thread *td, struct ksem *ks); static void sem_enter(struct proc *p, struct ksem *ks); static int sem_leave(struct proc *p, struct ksem *ks); -static void sem_exithook(struct proc *p); +static void sem_exithook(void *arg, struct proc *p); static int sem_hasopen(struct thread *td, struct ksem *ks); static int kern_sem_close(struct thread *td, semid_t id); @@ -114,6 +115,8 @@ static int nsems = 0; SYSCTL_DECL(_p1003_1b); SYSCTL_INT(_p1003_1b, OID_AUTO, nsems, CTLFLAG_RD, &nsems, 0, ""); +static eventhandler_tag sem_exit_tag, sem_exec_tag; + #ifdef SEM_DEBUG #define DP(x) printf x #else @@ -769,7 +772,8 @@ err: } static void -sem_exithook(p) +sem_exithook(arg, p) + void *arg; struct proc *p; { struct ksem *ks, *ksnext; @@ -800,16 +804,18 @@ sem_modload(struct module *module, int cmd, void *arg) mtx_init(&sem_lock, "sem", "semaphore", MTX_DEF); p31b_setcfg(CTL_P1003_1B_SEM_NSEMS_MAX, SEM_MAX); p31b_setcfg(CTL_P1003_1B_SEM_VALUE_MAX, SEM_VALUE_MAX); - at_exec(&sem_exithook); - at_exit(&sem_exithook); + sem_exit_tag = EVENTHANDLER_REGISTER(process_exit, sem_exithook, + NULL, EVENTHANDLER_PRI_ANY); + sem_exec_tag = EVENTHANDLER_REGISTER(process_exec, sem_exithook, + NULL, EVENTHANDLER_PRI_ANY); break; case MOD_UNLOAD: if (nsems != 0) { error = EOPNOTSUPP; break; } - rm_at_exit(&sem_exithook); - rm_at_exec(&sem_exithook); + EVENTHANDLER_DEREGISTER(process_exit, sem_exit_tag); + EVENTHANDLER_DEREGISTER(process_exec, sem_exec_tag); mtx_destroy(&sem_lock); break; case MOD_SHUTDOWN: |
