diff mbox series

[PULL,v2,20/23] bsd-user: Add stop_all_tasks

Message ID 20211018190115.5365-21-imp@bsdimp.com
State New
Headers show
Series [PULL,v2,01/23] bsd-user/mmap.c: Always zero MAP_ANONYMOUS memory in mmap_frag() | expand

Commit Message

Warner Losh Oct. 18, 2021, 7:01 p.m. UTC 
Similar to the same function in linux-user: this stops all the current tasks.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
---
 bsd-user/main.c | 9 +++++++++
 bsd-user/qemu.h | 1 +
 2 files changed, 10 insertions(+)
diff mbox series

Patch

diff --git a/bsd-user/main.c b/bsd-user/main.c
index ee84554854..cb5ea40236 100644
--- a/bsd-user/main.c
+++ b/bsd-user/main.c
@@ -195,6 +195,15 @@  static void usage(void)
 
 __thread CPUState *thread_cpu;
 
+void stop_all_tasks(void)
+{
+    /*
+     * We trust when using NPTL (pthreads) start_exclusive() handles thread
+     * stopping correctly.
+     */
+    start_exclusive();
+}
+
 bool qemu_cpu_is_self(CPUState *cpu)
 {
     return thread_cpu == cpu;
diff --git a/bsd-user/qemu.h b/bsd-user/qemu.h
index c1170f14d9..cdb85140f4 100644
--- a/bsd-user/qemu.h
+++ b/bsd-user/qemu.h
@@ -103,6 +103,7 @@  typedef struct TaskState {
 } __attribute__((aligned(16))) TaskState;
 
 void init_task_state(TaskState *ts);
+void stop_all_tasks(void);
 extern const char *qemu_uname_release;
 
 /*