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Code Issues Releases Wiki Activity

log: improve performance of log_print()

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This commit is contained in:
Steffen Vogel 2018-08-20 17:57:15 +02:00
parent 33961825ce
commit ccd658a2d5
1 changed files with 7 additions and 5 deletions
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12
lib/log.c
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@ -28,7 +28,6 @@
#include <unistd.h>
#include <syslog.h>
#include <signal.h>
#include <threads.h>
#include <villas/config.h>
#include <villas/log.h>
@ -275,17 +274,20 @@ void log_print(struct log *l, const char *lvl, const char *fmt, ...)
void log_vprint(struct log *l, const char *lvl, const char *fmt, va_list ap)
{
struct timespec ts = time_now();
thread_local char buf[1024];
static __thread char buf[1024];
int off = 0;
int len = sizeof(buf);
/* Optional prefix */
if (l->prefix)
strcatf(&buf, "%s", l->prefix);
off += snprintf(buf + off, len - off, "%s", l->prefix);
/* Timestamp & Severity */
strcatf(&buf, "%10.3f %-5s ", time_delta(&l->epoch, &ts), lvl);
off += snprintf(buf + off, len - off, "%10.3f %-5s ", time_delta(&l->epoch, &ts), lvl);
/* Format String */
vstrcatf(&buf, fmt, ap);
off += vsnprintf(buf + off, len - off, fmt, ap);
/* Output */
#ifdef ENABLE_OPAL_ASYNC