[Qemu-devel] [PATCH v2 07/10] [trivial] Track when QEMU has finished initialization

["Lluís Vilanova" <vilanova@ac.upc.edu>]

Later used to synchronize per-vCPU state of events enabled from command
line.

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
---
 Makefile.objs            |    2 +-
 bsd-user/main.c          |    1 +
 include/qemu-common.h    |    3 +++
 linux-user/main.c        |    1 +
 qemu-common.c            |   14 ++++++++++++++
 stubs/Makefile.objs      |    1 +
 stubs/qemu-common-stub.c |   21 +++++++++++++++++++++
 vl.c                     |    2 ++
 8 files changed, 44 insertions(+), 1 deletion(-)
 create mode 100644 qemu-common.c
 create mode 100644 stubs/qemu-common-stub.c

diff --git a/Makefile.objs b/Makefile.objs
index 77be052..d161060 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -2,7 +2,7 @@
 # Common libraries for tools and emulators
 stub-obj-y = stubs/
 util-obj-y = util/ qobject/ qapi/
-util-obj-y += qmp-introspect.o qapi-types.o qapi-visit.o qapi-event.o
+util-obj-y += qmp-introspect.o qapi-types.o qapi-visit.o qapi-event.o qemu-common.o
 
 #######################################################################
 # block-obj-y is code used by both qemu system emulation and qemu-img
diff --git a/bsd-user/main.c b/bsd-user/main.c
index adf2de0..eff37e0 100644
--- a/bsd-user/main.c
+++ b/bsd-user/main.c
@@ -1121,6 +1121,7 @@ int main(int argc, char **argv)
         gdbserver_start (gdbstub_port);
         gdb_handlesig(cpu, 0);
     }
+    qemu_initialized = true;
     cpu_loop(env);
     /* never exits */
     return 0;
diff --git a/include/qemu-common.h b/include/qemu-common.h
index 405364f..dccc0ac 100644
--- a/include/qemu-common.h
+++ b/include/qemu-common.h
@@ -35,6 +35,9 @@
 # error Unknown pointer size
 #endif
 
+/* Whether the system has finished initializing */
+extern bool qemu_initialized;
+
 void cpu_ticks_init(void);
 
 /* icount */
diff --git a/linux-user/main.c b/linux-user/main.c
index 8acfe0f..f80a01e 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -4663,6 +4663,7 @@ int main(int argc, char **argv, char **envp)
         }
         gdb_handlesig(cpu, 0);
     }
+    qemu_initialized = true;
     cpu_loop(env);
     /* never exits */
     return 0;
diff --git a/qemu-common.c b/qemu-common.c
new file mode 100644
index 0000000..4b5ca1a
--- /dev/null
+++ b/qemu-common.c
@@ -0,0 +1,14 @@
+/*
+ * Common symbol definitions for all tools and targets.
+ *
+ * Copyright (C) 2011-2015 Lluís Vilanova <vilanova@ac.upc.edu>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+*/
+
+#include "qemu-common.h"
+
+
+/* Whether QEMU has been initialized. */
+bool qemu_initialized;
diff --git a/stubs/Makefile.objs b/stubs/Makefile.objs
index d7898a0..670585a 100644
--- a/stubs/Makefile.objs
+++ b/stubs/Makefile.objs
@@ -38,3 +38,4 @@ stub-obj-y += qmp_pc_dimm_device_list.o
 stub-obj-y += target-monitor-defs.o
 stub-obj-y += target-get-monitor-def.o
 stub-obj-y += vhost.o
+stub-obj-y += qemu-common-stub.o
diff --git a/stubs/qemu-common-stub.c b/stubs/qemu-common-stub.c
new file mode 100644
index 0000000..f34f019
--- /dev/null
+++ b/stubs/qemu-common-stub.c
@@ -0,0 +1,21 @@
+/*
+ * Common symbol definitions for all tools and targets.
+ *
+ * Copyright (C) 2011-2015 Lluís Vilanova <vilanova@ac.upc.edu>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+*/
+
+#include "qemu-common.h"
+#include <qemu/module.h>
+
+
+static void do_qemu_initialized_init(void)
+{
+    /* Tools always consider QEMU as inited */
+    qemu_initialized = true;
+}
+
+/* Block is always inited on both tools (and targets) */
+block_init(do_qemu_initialized_init);
diff --git a/vl.c b/vl.c
index 525929b..7c56159 100644
--- a/vl.c
+++ b/vl.c
@@ -4681,6 +4681,8 @@ int main(int argc, char **argv, char **envp)
         }
     }
 
+    qemu_initialized = true;
+
     main_loop();
     replay_disable_events();