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Encapsulate buffer allocation in buffered writer

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This commit is contained in:
Yinan Zhang
2020-02-03 15:56:13 -08:00
parent bdc08b5158
commit 9cac3fa8f5
6 changed files with 215 additions and 80 deletions
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27
include/jemalloc/internal/buf_writer.h
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@@ -10,27 +10,24 @@
* some "option like" content for the write_cb, so it doesn't matter.
*/
typedef void (write_cb_t)(void *, const char *);
typedef struct {
void (*write_cb)(void *, const char *);
void *cbopaque;
write_cb_t *public_write_cb;
void *public_cbopaque;
write_cb_t *private_write_cb;
void *private_cbopaque;
char *buf;
size_t buf_size;
size_t buf_end;
bool internal_buf;
} buf_writer_t;
JEMALLOC_ALWAYS_INLINE void
buf_writer_init(buf_writer_t *buf_writer, void (*write_cb)(void *,
const char *), void *cbopaque, char *buf, size_t buf_len) {
buf_writer->write_cb = write_cb;
buf_writer->cbopaque = cbopaque;
assert(buf != NULL);
buf_writer->buf = buf;
assert(buf_len >= 2);
buf_writer->buf_size = buf_len - 1; /* Allowing for '\0' at the end. */
buf_writer->buf_end = 0;
}
bool buf_writer_init(tsdn_t *tsdn, buf_writer_t *buf_writer,
write_cb_t *write_cb, void *cbopaque, char *buf, size_t buf_len);
write_cb_t *buf_writer_get_write_cb(buf_writer_t *buf_writer);
void *buf_writer_get_cbopaque(buf_writer_t *buf_writer);
void buf_writer_flush(buf_writer_t *buf_writer);
void buf_writer_cb(void *buf_writer_arg, const char *s);
void buf_writer_terminate(tsdn_t *tsdn, buf_writer_t *buf_writer);
#endif /* JEMALLOC_INTERNAL_BUF_WRITER_H */