diff options
author | davidxu <davidxu@FreeBSD.org> | 2004-07-12 07:39:20 +0000 |
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committer | davidxu <davidxu@FreeBSD.org> | 2004-07-12 07:39:20 +0000 |
commit | 351df4e3484dd088f7e5802e8bce6fb514779540 (patch) | |
tree | 4533691922b23dce2a5e5d058b14848d4c8231d3 /sys/kern | |
parent | ba689b40433c4dbba7960454bbb126e6da5bdf59 (diff) | |
download | FreeBSD-src-351df4e3484dd088f7e5802e8bce6fb514779540.zip FreeBSD-src-351df4e3484dd088f7e5802e8bce6fb514779540.tar.gz |
Change kse_switchin to accept kse_thr_mailbox pointer, the syscall
will be used heavily in debugging KSE threads. This breaks libpthread
on IA64, but because libpthread was not in 5.2.1 release, I would like
to change it so we needn't to introduce another syscall.
Diffstat (limited to 'sys/kern')
-rw-r--r-- | sys/kern/kern_kse.c | 29 | ||||
-rw-r--r-- | sys/kern/syscalls.master | 4 |
2 files changed, 22 insertions, 11 deletions
diff --git a/sys/kern/kern_kse.c b/sys/kern/kern_kse.c index 3498127..0b4e7c5 100644 --- a/sys/kern/kern_kse.c +++ b/sys/kern/kern_kse.c @@ -126,25 +126,36 @@ upcall_remove(struct thread *td) #ifndef _SYS_SYSPROTO_H_ struct kse_switchin_args { - const struct __mcontext *mcp; - long val; - long *loc; + struct kse_thr_mailbox *tmbx; + int flags; }; #endif int kse_switchin(struct thread *td, struct kse_switchin_args *uap) { - mcontext_t mc; + struct kse_thr_mailbox tmbx; + struct kse_upcall *ku; int error; - error = (uap->mcp == NULL) ? EINVAL : 0; + if ((ku = td->td_upcall) == NULL || TD_CAN_UNBIND(td)) + return (EINVAL); + error = (uap->tmbx == NULL) ? EINVAL : 0; if (!error) - error = copyin(uap->mcp, &mc, sizeof(mc)); - if (!error && uap->loc != NULL) - error = (suword(uap->loc, uap->val) != 0) ? EINVAL : 0; + error = copyin(uap->tmbx, &tmbx, sizeof(tmbx)); + if (!error && (uap->flags & KSE_SWITCHIN_SETTMBX)) + error = (suword(&ku->ku_mailbox->km_curthread, + (long)uap->tmbx) != 0 ? EINVAL : 0); if (!error) - error = set_mcontext(td, &mc); + error = set_mcontext(td, &tmbx.tm_context.uc_mcontext); + if (!error) { + if (uap->flags & KSE_SWITCHIN_SETTMBX) { + td->td_mailbox = uap->tmbx; + mtx_lock_spin(&sched_lock); + td->td_flags |= TDF_CAN_UNBIND; + mtx_unlock_spin(&sched_lock); + } + } return ((error == 0) ? EJUSTRETURN : error); } diff --git a/sys/kern/syscalls.master b/sys/kern/syscalls.master index acab8e0..05d8ffa 100644 --- a/sys/kern/syscalls.master +++ b/sys/kern/syscalls.master @@ -626,8 +626,8 @@ int attrnamespace, void *data, size_t nbytes); } 439 STD { ssize_t extattr_list_link(const char *path, \ int attrnamespace, void *data, size_t nbytes); } -440 MSTD { int kse_switchin(const struct __mcontext *mcp, \ - long val, long *loc); } +440 MSTD { int kse_switchin(struct kse_thr_mailbox *tmbx, \ + int flags); } 441 MNOSTD { int ksem_timedwait(semid_t id, struct timespec *abstime); } 442 MSTD { int thr_suspend(const struct timespec *timeout); } 443 MSTD { int thr_wake(long id); } |