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save some CPU ticks if console is not ready (#730)

This commit is contained in:
dron0gus 2019-04-02 11:19:05 +03:00 committed by rusefi
parent 9d95127260
commit b0f0eec199
1 changed files with 9 additions and 4 deletions
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13
firmware/util/datalogging.cpp
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@ -198,6 +198,12 @@ static char header[16];
* this method should invoked on the main thread only
*/
void printWithLength(char *line) {
int len;
char *p;
if (!isCommandLineConsoleReady())
return;
/**
* this is my way to detect serial port transmission errors
* following code is functionally identical to
@ -209,9 +215,10 @@ void printWithLength(char *line) {
*/
// todo: if needed we can probably know line length without calculating it, but seems like this is done not
// under a lock so not a problem?
int len = efiStrlen(line);
len = efiStrlen(line);
strcpy(header, "line:");
char *p = header + efiStrlen(header);
p = header + efiStrlen(header);
p = itoa10(p, len);
*p++ = ':';
*p++ = '\0';
@ -221,8 +228,6 @@ void printWithLength(char *line) {
*p++ = '\r';
*p++ = '\n';
if (!isCommandLineConsoleReady())
return;
consoleOutputBuffer((const uint8_t *) header, strlen(header));
consoleOutputBuffer((const uint8_t *) line, p - line);
}