Revision d25f89c9
| b/compatfd.c | ||
|---|---|---|
| 115 | 115 |
|
| 116 | 116 |
return qemu_signalfd_compat(mask); |
| 117 | 117 |
} |
| 118 |
|
|
| 119 |
bool qemu_signalfd_available(void) |
|
| 120 |
{
|
|
| 121 |
#ifdef CONFIG_SIGNALFD |
|
| 122 |
errno = 0; |
|
| 123 |
syscall(SYS_signalfd, -1, NULL, _NSIG / 8); |
|
| 124 |
return errno != ENOSYS; |
|
| 125 |
#else |
|
| 126 |
return false; |
|
| 127 |
#endif |
|
| 128 |
} |
|
| b/compatfd.h | ||
|---|---|---|
| 39 | 39 |
}; |
| 40 | 40 |
|
| 41 | 41 |
int qemu_signalfd(const sigset_t *mask); |
| 42 |
bool qemu_signalfd_available(void); |
|
| 42 | 43 |
|
| 43 | 44 |
#endif |
| b/qemu-timer.c | ||
|---|---|---|
| 831 | 831 |
|
| 832 | 832 |
#if defined(__linux__) |
| 833 | 833 |
|
| 834 |
#include "compatfd.h" |
|
| 835 |
|
|
| 834 | 836 |
static int dynticks_start_timer(struct qemu_alarm_timer *t) |
| 835 | 837 |
{
|
| 836 | 838 |
struct sigevent ev; |
| ... | ... | |
| 850 | 852 |
memset(&ev, 0, sizeof(ev)); |
| 851 | 853 |
ev.sigev_value.sival_int = 0; |
| 852 | 854 |
ev.sigev_notify = SIGEV_SIGNAL; |
| 855 |
#ifdef SIGEV_THREAD_ID |
|
| 856 |
if (qemu_signalfd_available()) {
|
|
| 857 |
ev.sigev_notify = SIGEV_THREAD_ID; |
|
| 858 |
ev._sigev_un._tid = qemu_get_thread_id(); |
|
| 859 |
} |
|
| 860 |
#endif /* SIGEV_THREAD_ID */ |
|
| 853 | 861 |
ev.sigev_signo = SIGALRM; |
| 854 | 862 |
|
| 855 | 863 |
if (timer_create(CLOCK_REALTIME, &ev, &host_timer)) {
|
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