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Code Issues Releases Wiki Activity

vlog: Use async I/O.

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Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Ben Pfaff
2013-07-10 11:43:46 -07:00
parent 5ddea99811
commit a5fb0e29a9
2 changed files with 14 additions and 1 deletions
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12
lib/vlog.c
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@@ -28,6 +28,7 @@
#include <syslog.h>
#include <time.h>
#include <unistd.h>
#include "async-append.h"
#include "coverage.h"
#include "dirs.h"
#include "dynamic-string.h"
@@ -95,6 +96,7 @@ static struct facility facilities[VLF_N_FACILITIES] = {
/* VLF_FILE configuration. */
static char *log_file_name;
static int log_fd = -1;
static struct async_append *log_writer;
/* vlog initialized? */
static bool vlog_inited;
@@ -281,6 +283,10 @@ vlog_set_log_file(const char *file_name)
/* Close old log file. */
if (log_fd >= 0) {
VLOG_INFO("closing log file");
async_append_destroy(log_writer);
log_writer = NULL;
close(log_fd);
log_fd = -1;
}
@@ -307,6 +313,7 @@ vlog_set_log_file(const char *file_name)
log_file_name, ovs_strerror(errno));
error = errno;
} else {
log_writer = async_append_create(log_fd);
VLOG_INFO("opened log file %s", log_file_name);
error = 0;
}
@@ -786,7 +793,10 @@ vlog_valist(const struct vlog_module *module, enum vlog_level level,
format_log_message(module, level, VLF_FILE, msg_num,
message, args, &s);
ds_put_char(&s, '\n');
ignore(write(log_fd, s.string, s.length));
async_append_write(log_writer, s.string, s.length);
if (level == VLL_EMER) {
async_append_flush(log_writer);
}
}
ds_destroy(&s);