dcc38d1cce
Port qemu-kvm's signalfd compat code.
commit 5a7fdd0abd7cd24dac205317a4195446ab8748b5
Author: Anthony Liguori <aliguori@us.ibm.com>
Date: Wed May 7 11:55:47 2008 -0500
Use signalfd() in io-thread
This patch reworks the IO thread to use signalfd() instead of sigtimedwait()
This will eliminate the need to use SIGIO everywhere.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
/*
|
|
* signalfd/eventfd compatibility
|
|
*
|
|
* Copyright IBM, Corp. 2008
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
|
* the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef QEMU_COMPATFD_H
|
|
#define QEMU_COMPATFD_H
|
|
|
|
#include <signal.h>
|
|
|
|
struct qemu_signalfd_siginfo {
|
|
uint32_t ssi_signo; /* Signal number */
|
|
int32_t ssi_errno; /* Error number (unused) */
|
|
int32_t ssi_code; /* Signal code */
|
|
uint32_t ssi_pid; /* PID of sender */
|
|
uint32_t ssi_uid; /* Real UID of sender */
|
|
int32_t ssi_fd; /* File descriptor (SIGIO) */
|
|
uint32_t ssi_tid; /* Kernel timer ID (POSIX timers) */
|
|
uint32_t ssi_band; /* Band event (SIGIO) */
|
|
uint32_t ssi_overrun; /* POSIX timer overrun count */
|
|
uint32_t ssi_trapno; /* Trap number that caused signal */
|
|
int32_t ssi_status; /* Exit status or signal (SIGCHLD) */
|
|
int32_t ssi_int; /* Integer sent by sigqueue(2) */
|
|
uint64_t ssi_ptr; /* Pointer sent by sigqueue(2) */
|
|
uint64_t ssi_utime; /* User CPU time consumed (SIGCHLD) */
|
|
uint64_t ssi_stime; /* System CPU time consumed (SIGCHLD) */
|
|
uint64_t ssi_addr; /* Address that generated signal
|
|
(for hardware-generated signals) */
|
|
uint8_t pad[48]; /* Pad size to 128 bytes (allow for
|
|
additional fields in the future) */
|
|
};
|
|
|
|
int qemu_signalfd(const sigset_t *mask);
|
|
|
|
#endif
|