data.h

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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_DATA_H
#define __PERF_DATA_H

#include <stdbool.h>

enum perf_data_mode {
    PERF_DATA_MODE_WRITE,
    PERF_DATA_MODE_READ,
};

struct perf_data_file {
    const char  *path;
    int      fd;
};

struct perf_data {
    struct perf_data_file    file;
    bool             is_pipe;
    bool             force;
    unsigned long        size;
    enum perf_data_mode  mode;
};

static inline bool perf_data__is_read(struct perf_data *data)
{
    return data->mode == PERF_DATA_MODE_READ;
}

static inline bool perf_data__is_write(struct perf_data *data)
{
    return data->mode == PERF_DATA_MODE_WRITE;
}

static inline int perf_data__is_pipe(struct perf_data *data)
{
    return data->is_pipe;
}

static inline int perf_data__fd(struct perf_data *data)
{
    return data->file.fd;
}

static inline unsigned long perf_data__size(struct perf_data *data)
{
    return data->size;
}

int perf_data__open(struct perf_data *data);
void perf_data__close(struct perf_data *data);
ssize_t perf_data__write(struct perf_data *data,
                  void *buf, size_t size);
ssize_t perf_data_file__write(struct perf_data_file *file,
                  void *buf, size_t size);
/*
 * If at_exit is set, only rename current perf.data to
 * perf.data.<postfix>, continue write on original data.
 * Set at_exit when flushing the last output.
 *
 * Return value is fd of new output.
 */
int perf_data__switch(struct perf_data *data,
               const char *postfix,
               size_t pos, bool at_exit);
#endif /* __PERF_DATA_H */