From 46d62fac8a6a43453322b3305ab2fcb8ee594443 Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Tue, 1 Feb 2011 22:15:59 +0100 Subject: [PATCH] Introduce VCPU self-signaling service Introduce qemu_cpu_kick_self to send SIG_IPI to the calling VCPU context. First user will be kvm. Signed-off-by: Jan Kiszka Signed-off-by: Marcelo Tosatti --- cpus.c | 21 +++++++++++++++++++++ qemu-common.h | 1 + 2 files changed, 22 insertions(+) diff --git a/cpus.c b/cpus.c index 9a3fc31..6a85dc8 100644 --- a/cpus.c +++ b/cpus.c @@ -529,6 +529,17 @@ 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; @@ -831,6 +842,16 @@ 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 c7ff280..a4d9c21 100644 --- a/qemu-common.h +++ b/qemu-common.h @@ -288,6 +288,7 @@ 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 */ -- 2.7.4