This patch provides support for 'joining a thread' by wrapping the POSIX
pthread_join with qemu_thread_join.
Since the backend implementation is based on threads and I am stopping
and starting that thread during operations like 'snapshot resume', I
do use this functionality to synchronize with the TPM thread's termination
before terminating the TPM, creating a new one and loading previous state
from the time of the snapshot into the TPM.
Signed-off-by: Stefan Berger <stef...@linux.vnet.ibm.com>
---
qemu-thread-posix.c | 5 +++++
qemu-thread.h | 1 +
2 files changed, 6 insertions(+)
Index: qemu-git/qemu-thread-posix.c
===================================================================
--- qemu-git.orig/qemu-thread-posix.c
+++ qemu-git/qemu-thread-posix.c
@@ -147,3 +147,8 @@ void qemu_thread_exit(void *retval)
{
pthread_exit(retval);
}
+
+int qemu_thread_join(QemuThread *thread, void **retval)
+{
+ return pthread_join(thread->thread, retval);
+}
Index: qemu-git/qemu-thread.h
===================================================================
--- qemu-git.orig/qemu-thread.h
+++ qemu-git/qemu-thread.h
@@ -35,5 +35,6 @@ void qemu_thread_create(QemuThread *thre
void qemu_thread_get_self(QemuThread *thread);
int qemu_thread_is_self(QemuThread *thread);
void qemu_thread_exit(void *retval);
+int qemu_thread_join(QemuThread *thread, void **retval);
#endif
