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artiq/artiq/runtime/log.c
whitequark cd7f12e4b1 Remove lognonl(); rename log() to core_log() to avoid math.h conflict.
Also, make core_log() exactly equivalent to printf(), since the lack
of a drop-in universally usable printf() equivalent annoys me.

Note that this breaks compiled experiments. They'll be fixed in
the following commits.
2016-02-15 03:56:56 +00:00

52 lines
1003 B
C

#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <console.h>
#include <generated/csr.h>
#include "log.h"
static int buffer_cursor;
static char buffer[LOG_BUFFER_SIZE];
void core_log(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
core_log_va(fmt, args);
va_end(args);
}
void core_log_va(const char *fmt, va_list args)
{
char outbuf[256];
int len = vscnprintf(outbuf, sizeof(outbuf), fmt, args);
for(int i = 0; i < len; i++) {
buffer[buffer_cursor] = outbuf[i];
buffer_cursor = (buffer_cursor + 1) % LOG_BUFFER_SIZE;
}
#ifdef CSR_ETHMAC_BASE
/* Since main comms are over ethernet, the serial port
* is free for us to use. */
putsnonl(outbuf);
#endif
}
void core_log_get(char *outbuf)
{
int j = buffer_cursor;
for(int i = 0; i < LOG_BUFFER_SIZE; i++) {
outbuf[i] = buffer[j];
j = (j + 1) % LOG_BUFFER_SIZE;
}
}
void core_log_clear()
{
memset(buffer, 0, sizeof(buffer));
}