blob: 5260d9aa813f10d606a0b4e4ea56601dc81890e9 [file] [log] [blame]
* Simple trace backend
* Copyright IBM, Corp. 2010
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include "trace/generated-events.h"
void st_print_trace_file_status(FILE *stream, fprintf_function stream_printf);
void st_set_trace_file_enabled(bool enable);
bool st_set_trace_file(const char *file);
void st_flush_trace_buffer(void);
typedef struct {
unsigned int tbuf_idx;
unsigned int rec_off;
} TraceBufferRecord;
/* Note for hackers: Make sure MAX_TRACE_LEN < sizeof(uint32_t) */
#define MAX_TRACE_STRLEN 512
* Initialize a trace record and claim space for it in the buffer
* @arglen number of bytes required for arguments
int trace_record_start(TraceBufferRecord *rec, TraceEventID id, size_t arglen);
* Append a 64-bit argument to a trace record
void trace_record_write_u64(TraceBufferRecord *rec, uint64_t val);
* Append a string argument to a trace record
void trace_record_write_str(TraceBufferRecord *rec, const char *s, uint32_t slen);
* Mark a trace record completed
* Don't append any more arguments to the trace record after calling this.
void trace_record_finish(TraceBufferRecord *rec);
#endif /* TRACE_SIMPLE_H */