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| author |   Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com> | 2023-10-10 11:40:56 +0000 |
|---|---|---|
| committer | Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com> | 2023-10-10 11:40:56 +0000 |
| commit | e02cda008591317b1625707ff8e115a4841aa889 (patch) | |
| tree | aee302e3cf8b59ec2d32ec481be3d1afddfc8968 /replay/replay-time.c | |
| parent | cc668e6b7e0ffd8c9d130513d12053cf5eda1d3b (diff) | |
Introduce Virtio-loopback epsilon release:
Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.
Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9
Diffstat (limited to 'replay/replay-time.c')
| -rw-r--r-- | replay/replay-time.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/replay/replay-time.c b/replay/replay-time.c new file mode 100644 index 000000000..00ebcb7a4 --- /dev/null +++ b/replay/replay-time.c @@ -0,0 +1,62 @@ +/* + * replay-time.c + * + * Copyright (c) 2010-2015 Institute for System Programming + * of the Russian Academy of Sciences. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#include "qemu/osdep.h" +#include "sysemu/replay.h" +#include "replay-internal.h" +#include "qemu/error-report.h" + +int64_t replay_save_clock(ReplayClockKind kind, int64_t clock, + int64_t raw_icount) +{ + g_assert(replay_file); + g_assert(replay_mutex_locked()); + + /* + * Due to the caller's locking requirements we get the icount from it + * instead of using replay_save_instructions(). + */ + replay_advance_current_icount(raw_icount); + replay_put_event(EVENT_CLOCK + kind); + replay_put_qword(clock); + + return clock; +} + +void replay_read_next_clock(ReplayClockKind kind) +{ + unsigned int read_kind = replay_state.data_kind - EVENT_CLOCK; + + assert(read_kind == kind); + + int64_t clock = replay_get_qword(); + + replay_check_error(); + replay_finish_event(); + + replay_state.cached_clock[read_kind] = clock; +} + +/*! Reads next clock event from the input. */ +int64_t replay_read_clock(ReplayClockKind kind, int64_t raw_icount) +{ + int64_t ret; + g_assert(replay_file && replay_mutex_locked()); + + replay_advance_current_icount(raw_icount); + + if (replay_next_event_is(EVENT_CLOCK + kind)) { + replay_read_next_clock(kind); + } + ret = replay_state.cached_clock[kind]; + + return ret; +} |