* Copyright 2009, Michael Lotz, mmlr@mlotz.ch.
* Distributed under the terms of the MIT License.
*/
#include "ATATracing.h"
#include <stdarg.h>
#include <algorithm>
static char sTraceBuffer[256];
static uint32 sTraceBufferOffset = 0;
void
ata_trace_printf(uint32 flags, const char *format, ...)
{
if (sTraceBufferOffset < sizeof(sTraceBuffer)) {
va_list arguments;
va_start(arguments, format);
size_t totalBytes = vsnprintf(sTraceBuffer + sTraceBufferOffset,
sizeof(sTraceBuffer) - sTraceBufferOffset, format, arguments);
sTraceBufferOffset += std::min(totalBytes,
(size_t)(sizeof(sTraceBuffer) - sTraceBufferOffset - 1));
va_end(arguments);
}
if (flags & ATA_TRACE_FLUSH) {
#if ATA_TRACING
ktrace_printf(sTraceBuffer);
#endif
if (flags & ATA_TRACE_SYSLOG)
dprintf("%s", sTraceBuffer);
sTraceBufferOffset = 0;
}
}
