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syslog/default_channel: fix log confusion when multi task writing together 

Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
This commit is contained in:
Jiuzhu Dong 2021-06-10 22:05:58 +08:00 committed by Xiang Xiao
parent 707404d415
commit b30bf4ff06
1 changed files with 27 additions and 3 deletions
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30
drivers/syslog/syslog_channel.c
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@ -56,10 +56,12 @@
#if defined(CONFIG_SYSLOG_DEFAULT)
static int syslog_default_putc(FAR struct syslog_channel_s *channel,
int ch);
static ssize_t syslog_default_write(FAR struct syslog_channel_s *channel,
FAR const char *buffer, size_t buflen);
#endif
/****************************************************************************
* Public Data
* Private Data
****************************************************************************/
#if defined(CONFIG_RAMLOG_SYSLOG)
@ -91,10 +93,14 @@ static struct syslog_channel_s g_rpmsg_channel =
#endif
#if defined(CONFIG_SYSLOG_DEFAULT)
static sem_t g_syslog_default_sem = SEM_INITIALIZER(1);
static const struct syslog_channel_ops_s g_default_channel_ops =
{
syslog_default_putc,
syslog_default_putc
syslog_default_putc,
NULL,
syslog_default_write
};
static struct syslog_channel_s g_default_channel =
@ -126,7 +132,7 @@ FAR struct syslog_channel_s
****************************************************************************/
/****************************************************************************
* Name: syslog_default_putc and syslog_default_flush
* Name: syslog_default_putc
*
* Description:
* If the arch supports a low-level putc function, output will be
@ -145,6 +151,24 @@ static int syslog_default_putc(FAR struct syslog_channel_s *channel, int ch)
return ch;
}
static ssize_t syslog_default_write(FAR struct syslog_channel_s *channel,
FAR const char *buffer, size_t buflen)
{
#if defined(CONFIG_ARCH_LOWPUTC)
size_t nwritten;
nxsem_wait(&g_syslog_default_sem);
for (nwritten = 0; nwritten < buflen; nwritten++)
{
up_putc(buffer[nwritten]);
}
nxsem_post(&g_syslog_default_sem);
#endif
return OK;
}
#endif
/****************************************************************************