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Add pl_flags to ptrace_lwpinfo, two flags PL_FLAG_SA and PL_FLAG_BOUND

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indicate that a thread is in UTS critical region.

Reviewed by: deischen
Approved by: marcel
This commit is contained in:
davidxu 2004-08-08 22:26:11 +00:00
parent b337473ecd
commit 6412ad5b2e
2 changed files with 10 additions and 0 deletions
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7
sys/kern/sys_process.c
View File

@ -807,6 +807,13 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data)
else
pl->pl_event = 0;
}
if (td2->td_pflags & TDP_SA) {
pl->pl_flags = PL_FLAG_SA;
if (td2->td_upcall && !TD_CAN_UNBIND(td2))
pl->pl_flags |= PL_FLAG_BOUND;
} else {
pl->pl_flags = 0;
}
_PRELE(p);
PROC_UNLOCK(p);
return (0);

3
sys/sys/ptrace.h
View File

@ -89,6 +89,9 @@ struct ptrace_lwpinfo {
int pl_event; /* Event that stopped the LWP. */
#define PL_EVENT_NONE 0
#define PL_EVENT_SIGNAL 1
int pl_flags; /* LWP flags. */
#define PL_FLAG_SA 0x01 /* M:N thread */
#define PL_FLAG_BOUND 0x02 /* M:N bound thread */
};
#ifdef _KERNEL