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Ensure a SIGALRM results in a break out from the cpu loop.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3769 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
balrog 2007-12-03 03:01:40 +00:00
parent 001a3f5abf
commit ee5605e556
1 changed files with 20 additions and 14 deletions
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34
vl.c
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@ -233,6 +233,10 @@ const char *prom_envs[MAX_PROM_ENVS];
int nb_drives_opt; int nb_drives_opt;
char drives_opt[MAX_DRIVES][1024]; char drives_opt[MAX_DRIVES][1024];
static CPUState *cur_cpu;
static CPUState *next_cpu;
static int event_pending;
#define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR) #define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
/***********************************************************/ /***********************************************************/
@ -1180,16 +1184,16 @@ static void host_alarm_handler(int host_signum)
struct qemu_alarm_win32 *data = ((struct qemu_alarm_timer*)dwUser)->priv; struct qemu_alarm_win32 *data = ((struct qemu_alarm_timer*)dwUser)->priv;
SetEvent(data->host_alarm); SetEvent(data->host_alarm);
#endif #endif
CPUState *env = cpu_single_env; CPUState *env = next_cpu;
if (env) {
/* stop the currently executing cpu because a timer occured */ /* stop the currently executing cpu because a timer occured */
cpu_interrupt(env, CPU_INTERRUPT_EXIT); cpu_interrupt(env, CPU_INTERRUPT_EXIT);
#ifdef USE_KQEMU #ifdef USE_KQEMU
if (env->kqemu_enabled) { if (env->kqemu_enabled) {
kqemu_cpu_interrupt(env); kqemu_cpu_interrupt(env);
}
#endif
} }
#endif
event_pending = 1;
} }
} }
@ -7340,8 +7344,6 @@ void main_loop_wait(int timeout)
} }
static CPUState *cur_cpu;
static int main_loop(void) static int main_loop(void)
{ {
int ret, timeout; int ret, timeout;
@ -7351,15 +7353,13 @@ static int main_loop(void)
CPUState *env; CPUState *env;
cur_cpu = first_cpu; cur_cpu = first_cpu;
next_cpu = cur_cpu->next_cpu ?: first_cpu;
for(;;) { for(;;) {
if (vm_running) { if (vm_running) {
env = cur_cpu;
for(;;) { for(;;) {
/* get next cpu */ /* get next cpu */
env = env->next_cpu; env = next_cpu;
if (!env)
env = first_cpu;
#ifdef CONFIG_PROFILER #ifdef CONFIG_PROFILER
ti = profile_getclock(); ti = profile_getclock();
#endif #endif
@ -7367,6 +7367,12 @@ static int main_loop(void)
#ifdef CONFIG_PROFILER #ifdef CONFIG_PROFILER
qemu_time += profile_getclock() - ti; qemu_time += profile_getclock() - ti;
#endif #endif
next_cpu = env->next_cpu ?: first_cpu;
if (event_pending) {
ret = EXCP_INTERRUPT;
event_pending = 0;
break;
}
if (ret == EXCP_HLT) { if (ret == EXCP_HLT) {
/* Give the next CPU a chance to run. */ /* Give the next CPU a chance to run. */
cur_cpu = env; cur_cpu = env;