qapi: fix visitor serialization tests for numbers/doubles
[qemu/ar7.git] / trace / simple.h
blob5260d9aa813f10d606a0b4e4ea56601dc81890e9
1 /*
2 * Simple trace backend
4 * Copyright IBM, Corp. 2010
6 * This work is licensed under the terms of the GNU GPL, version 2. See
7 * the COPYING file in the top-level directory.
9 */
11 #ifndef TRACE_SIMPLE_H
12 #define TRACE_SIMPLE_H
14 #include <stdint.h>
15 #include <stdbool.h>
16 #include <stdio.h>
18 #include "trace/generated-events.h"
21 void st_print_trace_file_status(FILE *stream, fprintf_function stream_printf);
22 void st_set_trace_file_enabled(bool enable);
23 bool st_set_trace_file(const char *file);
24 void st_flush_trace_buffer(void);
26 typedef struct {
27 unsigned int tbuf_idx;
28 unsigned int rec_off;
29 } TraceBufferRecord;
31 /* Note for hackers: Make sure MAX_TRACE_LEN < sizeof(uint32_t) */
32 #define MAX_TRACE_STRLEN 512
33 /**
34 * Initialize a trace record and claim space for it in the buffer
36 * @arglen number of bytes required for arguments
38 int trace_record_start(TraceBufferRecord *rec, TraceEventID id, size_t arglen);
40 /**
41 * Append a 64-bit argument to a trace record
43 void trace_record_write_u64(TraceBufferRecord *rec, uint64_t val);
45 /**
46 * Append a string argument to a trace record
48 void trace_record_write_str(TraceBufferRecord *rec, const char *s, uint32_t slen);
50 /**
51 * Mark a trace record completed
53 * Don't append any more arguments to the trace record after calling this.
55 void trace_record_finish(TraceBufferRecord *rec);
57 #endif /* TRACE_SIMPLE_H */