[16/22] Introduce VCPU self-signaling service

Commit Message

Jan Kiszka Jan. 27, 2011, 1:10 p.m. UTC

None

Patch

diff --git a/cpus.c b/cpus.c
index bba59e5..88bed4e 100644
--- a/cpus.c
+++ b/cpus.c
@@ -531,6 +531,17 @@  void qemu_cpu_kick(void *env)
     return;
 }
 
+void qemu_cpu_kick_self(void)
+{
+#ifndef _WIN32
+    assert(cpu_single_env);
+
+    raise(SIG_IPI);
+#else
+    abort();
+#endif
+}
+
 void qemu_notify_event(void)
 {
     CPUState *env = cpu_single_env;
@@ -808,6 +819,16 @@  void qemu_cpu_kick(void *_env)
     }
 }
 
+void qemu_cpu_kick_self(void)
+{
+    assert(cpu_single_env);
+
+    if (!cpu_single_env->thread_kicked) {
+        qemu_thread_signal(cpu_single_env->thread, SIG_IPI);
+        cpu_single_env->thread_kicked = true;
+    }
+}
+
 int qemu_cpu_self(void *_env)
 {
     CPUState *env = _env;
diff --git a/qemu-common.h b/qemu-common.h
index 63d9943..220c8c8 100644
--- a/qemu-common.h
+++ b/qemu-common.h
@@ -287,6 +287,7 @@  void qemu_notify_event(void);
 
 /* Unblock cpu */
 void qemu_cpu_kick(void *env);
+void qemu_cpu_kick_self(void);
 int qemu_cpu_self(void *env);
 
 /* work queue */