diff options
Diffstat (limited to 'chardev')
| -rw-r--r-- | chardev/char.c | 70 |
1 files changed, 28 insertions, 42 deletions
diff --git a/chardev/char.c b/chardev/char.c index 02142b480e..c9e46f00f0 100644 --- a/chardev/char.c +++ b/chardev/char.c @@ -96,7 +96,8 @@ static void qemu_chr_fe_write_log(Chardev *s, } static int qemu_chr_fe_write_buffer(Chardev *s, - const uint8_t *buf, int len, int *offset) + const uint8_t *buf, int len, + int *offset, bool write_all) { ChardevClass *cc = CHARDEV_GET_CLASS(s); int res = 0; @@ -106,7 +107,7 @@ static int qemu_chr_fe_write_buffer(Chardev *s, while (*offset < len) { retry: res = cc->chr_write(s, buf + *offset, len - *offset); - if (res < 0 && errno == EAGAIN) { + if (res < 0 && errno == EAGAIN && write_all) { g_usleep(100); goto retry; } @@ -116,6 +117,9 @@ static int qemu_chr_fe_write_buffer(Chardev *s, } *offset += res; + if (!write_all) { + break; + } } if (*offset > 0) { qemu_chr_fe_write_log(s, buf, *offset); @@ -130,54 +134,20 @@ static bool qemu_chr_replay(Chardev *chr) return qemu_chr_has_feature(chr, QEMU_CHAR_FEATURE_REPLAY); } -int qemu_chr_fe_write(CharBackend *be, const uint8_t *buf, int len) +static int qemu_chr_write(Chardev *s, const uint8_t *buf, int len, + bool write_all) { - Chardev *s = be->chr; - ChardevClass *cc; - int ret; - - if (!s) { - return 0; - } - - if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_PLAY) { - int offset; - replay_char_write_event_load(&ret, &offset); - assert(offset <= len); - qemu_chr_fe_write_buffer(s, buf, offset, &offset); - return ret; - } - - cc = CHARDEV_GET_CLASS(s); - qemu_mutex_lock(&s->chr_write_lock); - ret = cc->chr_write(s, buf, len); - - if (ret > 0) { - qemu_chr_fe_write_log(s, buf, ret); - } - - qemu_mutex_unlock(&s->chr_write_lock); - - if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) { - replay_char_write_event_save(ret, ret < 0 ? 0 : ret); - } - - return ret; -} - -int qemu_chr_write_all(Chardev *s, const uint8_t *buf, int len) -{ - int offset; + int offset = 0; int res; if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_PLAY) { replay_char_write_event_load(&res, &offset); assert(offset <= len); - qemu_chr_fe_write_buffer(s, buf, offset, &offset); + qemu_chr_fe_write_buffer(s, buf, offset, &offset, true); return res; } - res = qemu_chr_fe_write_buffer(s, buf, len, &offset); + res = qemu_chr_fe_write_buffer(s, buf, len, &offset, write_all); if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) { replay_char_write_event_save(res, offset); @@ -189,6 +159,22 @@ int qemu_chr_write_all(Chardev *s, const uint8_t *buf, int len) return offset; } +int qemu_chr_write_all(Chardev *s, const uint8_t *buf, int len) +{ + return qemu_chr_write(s, buf, len, true); +} + +int qemu_chr_fe_write(CharBackend *be, const uint8_t *buf, int len) +{ + Chardev *s = be->chr; + + if (!s) { + return 0; + } + + return qemu_chr_write(s, buf, len, false); +} + int qemu_chr_fe_write_all(CharBackend *be, const uint8_t *buf, int len) { Chardev *s = be->chr; @@ -197,7 +183,7 @@ int qemu_chr_fe_write_all(CharBackend *be, const uint8_t *buf, int len) return 0; } - return qemu_chr_write_all(s, buf, len); + return qemu_chr_write(s, buf, len, true); } int qemu_chr_fe_read_all(CharBackend *be, uint8_t *buf, int len) |