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[PATCH 1/7] migration: use GDateTime for formatting timestamp in snapsho
From: |
Daniel P . Berrangé |
Subject: |
[PATCH 1/7] migration: use GDateTime for formatting timestamp in snapshot names |
Date: |
Wed, 5 May 2021 11:36:56 +0100 |
The GDateTime APIs provided by GLib avoid portability pitfalls, such
as some platforms where 'struct timeval.tv_sec' field is still 'long'
instead of 'time_t'. When combined with automatic cleanup, GDateTime
often results in simpler code too.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
migration/savevm.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/migration/savevm.c b/migration/savevm.c
index 52e2d72e4b..72848b946c 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -2775,8 +2775,7 @@ bool save_snapshot(const char *name, bool overwrite,
const char *vmstate,
QEMUFile *f;
int saved_vm_running;
uint64_t vm_state_size;
- qemu_timeval tv;
- struct tm tm;
+ g_autoptr(GDateTime) now = g_date_time_new_now_local();
AioContext *aio_context;
if (migration_is_blocked(errp)) {
@@ -2836,9 +2835,8 @@ bool save_snapshot(const char *name, bool overwrite,
const char *vmstate,
memset(sn, 0, sizeof(*sn));
/* fill auxiliary fields */
- qemu_gettimeofday(&tv);
- sn->date_sec = tv.tv_sec;
- sn->date_nsec = tv.tv_usec * 1000;
+ sn->date_sec = g_date_time_to_unix(now);
+ sn->date_nsec = g_date_time_get_microsecond(now) * 1000;
sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
if (replay_mode != REPLAY_MODE_NONE) {
sn->icount = replay_get_current_icount();
@@ -2849,9 +2847,8 @@ bool save_snapshot(const char *name, bool overwrite,
const char *vmstate,
if (name) {
pstrcpy(sn->name, sizeof(sn->name), name);
} else {
- /* cast below needed for OpenBSD where tv_sec is still 'long' */
- localtime_r((const time_t *)&tv.tv_sec, &tm);
- strftime(sn->name, sizeof(sn->name), "vm-%Y%m%d%H%M%S", &tm);
+ g_autofree char *autoname = g_date_time_format(now,
"vm-%Y%m%d%H%M%S");
+ pstrcpy(sn->name, sizeof(sn->name), autoname);
}
/* save the VM state */
--
2.31.1
- [PATCH 0/7] replace all use of strftime() with g_date_time_format(), Daniel P . Berrangé, 2021/05/05
- [PATCH 1/7] migration: use GDateTime for formatting timestamp in snapshot names,
Daniel P . Berrangé <=
- [PATCH 2/7] block: use GDateTime for formatting timestamp when dumping snapshot info, Daniel P . Berrangé, 2021/05/05
- [PATCH 3/7] net/rocker: use GDateTime for formatting timestamp in debug messages, Daniel P . Berrangé, 2021/05/05
- [PATCH 4/7] usb/dev-mtp: use GDateTime for formatting timestamp for objects, Daniel P . Berrangé, 2021/05/05
- [PATCH 5/7] io: use GDateTime for formatting timestamp for websock headers, Daniel P . Berrangé, 2021/05/05
- [PATCH 6/7] linux-user: use GDateTime for formatting timestamp for core file, Daniel P . Berrangé, 2021/05/05