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[v2,06/40] bsd-user: Bring in docs from linux-user for signal_pending

Message ID 20220125012947.14974-7-imp@bsdimp.com (mailing list archive)
State New, archived
Headers show
Series bsd-user: upstream our signal implementation | expand

Commit Message

Warner Losh Jan. 25, 2022, 1:29 a.m. UTC 
This is currently unused, so no code adjustments are needed.

Signed-off-by: Warner Losh <imp@bsdimp.com>
---
 bsd-user/qemu.h | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

Comments

Richard Henderson Jan. 27, 2022, 6:16 a.m. UTC | #1 
On 1/25/22 12:29, Warner Losh wrote:
> This is currently unused, so no code adjustments are needed.
> 
> Signed-off-by: Warner Losh<imp@bsdimp.com>
> ---
>   bsd-user/qemu.h | 9 ++++++++-
>   1 file changed, 8 insertions(+), 1 deletion(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~
diff mbox series

Patch

diff --git a/bsd-user/qemu.h b/bsd-user/qemu.h
index 4dd209e402d..671b26f00cc 100644
--- a/bsd-user/qemu.h
+++ b/bsd-user/qemu.h
@@ -86,7 +86,14 @@  typedef struct TaskState {
     struct image_info *info;
 
     struct emulated_sigtable sigtab[TARGET_NSIG];
-    int signal_pending; /* non zero if a signal may be pending */
+    /*
+     * Nonzero if process_pending_signals() needs to do something (either
+     * handle a pending signal or unblock signals).
+     * This flag is written from a signal handler so should be accessed via
+     * the qatomic_read() and qatomic_set() functions. (It is not accessed
+     * from multiple threads.)
+     */
+    int signal_pending;
 
     uint8_t stack[];
 } __attribute__((aligned(16))) TaskState;