040f9915e9
perf_data_file__switch() closes current output file, renames it, then open a new one to continue recording. It will be used by 'perf record' to split output into multiple perf.data files. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1460535673-159866-3-git-send-email-wangnan0@huawei.com Signed-off-by: He Kuang <hekuang@huawei.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
#ifndef __PERF_DATA_H
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#define __PERF_DATA_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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struct perf_data_file {
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const char *path;
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int fd;
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bool is_pipe;
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bool force;
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unsigned long size;
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enum perf_data_mode mode;
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};
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static inline bool perf_data_file__is_read(struct perf_data_file *file)
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{
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return file->mode == PERF_DATA_MODE_READ;
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}
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static inline bool perf_data_file__is_write(struct perf_data_file *file)
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{
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return file->mode == PERF_DATA_MODE_WRITE;
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}
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static inline int perf_data_file__is_pipe(struct perf_data_file *file)
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{
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return file->is_pipe;
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}
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static inline int perf_data_file__fd(struct perf_data_file *file)
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{
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return file->fd;
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}
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static inline unsigned long perf_data_file__size(struct perf_data_file *file)
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{
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return file->size;
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}
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int perf_data_file__open(struct perf_data_file *file);
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void perf_data_file__close(struct perf_data_file *file);
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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 file.
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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_file__switch(struct perf_data_file *file,
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const char *postfix,
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size_t pos, bool at_exit);
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#endif /* __PERF_DATA_H */
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