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058f151130
Adding is_perf_data function that returns true if the given path is perf data file. It will be used in following patches. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20201126170026.2619053-21-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_DATA_H
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#define __PERF_DATA_H
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#include <stdio.h>
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#include <stdbool.h>
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enum perf_data_mode {
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PERF_DATA_MODE_WRITE,
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PERF_DATA_MODE_READ,
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};
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enum perf_dir_version {
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PERF_DIR_SINGLE_FILE = 0,
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PERF_DIR_VERSION = 1,
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};
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struct perf_data_file {
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char *path;
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union {
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int fd;
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FILE *fptr;
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};
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unsigned long size;
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};
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struct perf_data {
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const char *path;
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struct perf_data_file file;
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bool is_pipe;
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bool is_dir;
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bool force;
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bool use_stdio;
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enum perf_data_mode mode;
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struct {
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u64 version;
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struct perf_data_file *files;
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int nr;
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} dir;
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};
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static inline bool perf_data__is_read(struct perf_data *data)
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{
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return data->mode == PERF_DATA_MODE_READ;
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}
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static inline bool perf_data__is_write(struct perf_data *data)
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{
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return data->mode == PERF_DATA_MODE_WRITE;
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}
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static inline int perf_data__is_pipe(struct perf_data *data)
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{
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return data->is_pipe;
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}
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static inline bool perf_data__is_dir(struct perf_data *data)
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{
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return data->is_dir;
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}
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static inline bool perf_data__is_single_file(struct perf_data *data)
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{
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return data->dir.version == PERF_DIR_SINGLE_FILE;
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}
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static inline int perf_data__fd(struct perf_data *data)
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{
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if (data->use_stdio)
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return fileno(data->file.fptr);
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return data->file.fd;
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}
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int perf_data__open(struct perf_data *data);
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void perf_data__close(struct perf_data *data);
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ssize_t perf_data__read(struct perf_data *data, void *buf, size_t size);
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ssize_t perf_data__write(struct perf_data *data,
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void *buf, size_t size);
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ssize_t perf_data_file__write(struct perf_data_file *file,
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void *buf, size_t size);
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/*
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* If at_exit is set, only rename current perf.data to
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* perf.data.<postfix>, continue write on original data.
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* Set at_exit when flushing the last output.
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*
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* Return value is fd of new output.
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*/
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int perf_data__switch(struct perf_data *data,
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const char *postfix,
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size_t pos, bool at_exit, char **new_filepath);
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int perf_data__create_dir(struct perf_data *data, int nr);
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int perf_data__open_dir(struct perf_data *data);
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void perf_data__close_dir(struct perf_data *data);
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int perf_data__update_dir(struct perf_data *data);
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unsigned long perf_data__size(struct perf_data *data);
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int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz);
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char *perf_data__kallsyms_name(struct perf_data *data);
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bool is_perf_data(const char *path);
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#endif /* __PERF_DATA_H */
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