diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/lib/traceevent/trace-seq.h | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/lib/traceevent/trace-seq.h')
-rw-r--r-- | tools/lib/traceevent/trace-seq.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/tools/lib/traceevent/trace-seq.h b/tools/lib/traceevent/trace-seq.h new file mode 100644 index 000000000..d68ec69f8 --- /dev/null +++ b/tools/lib/traceevent/trace-seq.h @@ -0,0 +1,55 @@ +// SPDX-License-Identifier: LGPL-2.1 +/* + * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> + * + */ + +#ifndef _TRACE_SEQ_H +#define _TRACE_SEQ_H + +#include <stdarg.h> +#include <stdio.h> + +/* ----------------------- trace_seq ----------------------- */ + +#ifndef TRACE_SEQ_BUF_SIZE +#define TRACE_SEQ_BUF_SIZE 4096 +#endif + +enum trace_seq_fail { + TRACE_SEQ__GOOD, + TRACE_SEQ__BUFFER_POISONED, + TRACE_SEQ__MEM_ALLOC_FAILED, +}; + +/* + * Trace sequences are used to allow a function to call several other functions + * to create a string of data to use (up to a max of PAGE_SIZE). + */ + +struct trace_seq { + char *buffer; + unsigned int buffer_size; + unsigned int len; + unsigned int readpos; + enum trace_seq_fail state; +}; + +void trace_seq_init(struct trace_seq *s); +void trace_seq_reset(struct trace_seq *s); +void trace_seq_destroy(struct trace_seq *s); + +extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args) + __attribute__ ((format (printf, 2, 0))); + +extern int trace_seq_puts(struct trace_seq *s, const char *str); +extern int trace_seq_putc(struct trace_seq *s, unsigned char c); + +extern void trace_seq_terminate(struct trace_seq *s); + +extern int trace_seq_do_fprintf(struct trace_seq *s, FILE *fp); +extern int trace_seq_do_printf(struct trace_seq *s); + +#endif /* _TRACE_SEQ_H */ |