diff options
| author | jhb <jhb@FreeBSD.org> | 2001-08-21 20:09:05 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2001-08-21 20:09:05 +0000 |
| commit | 2d8b87461880a28413751515a0b56b29bf14efad (patch) | |
| tree | 9aafc7dcbc6133830fb173811e9073e45b8c9121 /sys/kern/kern_synch.c | |
| parent | 478fdbdcbc1d3ff9459bb8b2dc7050b32a724e81 (diff) | |
| download | FreeBSD-src-2d8b87461880a28413751515a0b56b29bf14efad.zip FreeBSD-src-2d8b87461880a28413751515a0b56b29bf14efad.tar.gz | |
Add a hook to mi_switch() to abort via db_error() if we attempt to
perform a context switch from DDB.
Consulting from: bde
Diffstat (limited to 'sys/kern/kern_synch.c')
| -rw-r--r-- | sys/kern/kern_synch.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/sys/kern/kern_synch.c b/sys/kern/kern_synch.c index 6a20e10..e39ee45 100644 --- a/sys/kern/kern_synch.c +++ b/sys/kern/kern_synch.c @@ -39,6 +39,7 @@ * $FreeBSD$ */ +#include "opt_ddb.h" #include "opt_ktrace.h" #include <sys/param.h> @@ -58,6 +59,9 @@ #include <sys/vmmeter.h> #include <vm/vm.h> #include <vm/vm_extern.h> +#ifdef DDB +#include <ddb/ddb.h> +#endif #ifdef KTRACE #include <sys/uio.h> #include <sys/ktrace.h> @@ -664,6 +668,14 @@ mi_switch() (int64_t)1000000; } +#ifdef DDB + /* + * Don't perform context switches from the debugger. + */ + if (db_active) + db_error("Context switches not allowed in the debugger."); +#endif + #if 0 /* * Check if the process exceeds its cpu resource allocation. |
