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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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24
src/prof_recent.c
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@ -462,20 +462,13 @@ dump_bt(emitter_t *emitter, prof_tctx_t *tctx) {
void
prof_recent_alloc_dump(tsd_t *tsd, void (*write_cb)(void *, const char *),
void *cbopaque) {
char *buf = (char *)iallocztm(tsd_tsdn(tsd), PROF_RECENT_PRINT_BUFSIZE,
sz_size2index(PROF_RECENT_PRINT_BUFSIZE), false, NULL, true,
arena_get(tsd_tsdn(tsd), 0, false), true);
emitter_t emitter;
buf_writer_t buf_writer;
if (buf == NULL) {
emitter_init(&emitter, emitter_output_json_compact, write_cb,
cbopaque);
} else {
buf_writer_init(&buf_writer, write_cb, cbopaque, buf,
PROF_RECENT_PRINT_BUFSIZE);
emitter_init(&emitter, emitter_output_json_compact,
buf_writer_cb, &buf_writer);
}
buf_writer_init(tsd_tsdn(tsd), &buf_writer, write_cb, cbopaque, NULL,
PROF_RECENT_PRINT_BUFSIZE);
emitter_t emitter;
emitter_init(&emitter, emitter_output_json_compact,
buf_writer_get_write_cb(&buf_writer),
buf_writer_get_cbopaque(&buf_writer));
emitter_begin(&emitter);
malloc_mutex_lock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
@ -535,10 +528,7 @@ prof_recent_alloc_dump(tsd_t *tsd, void (*write_cb)(void *, const char *),
malloc_mutex_unlock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
emitter_end(&emitter);
if (buf != NULL) {
buf_writer_flush(&buf_writer);
idalloctm(tsd_tsdn(tsd), buf, NULL, NULL, true, true);
}
buf_writer_terminate(tsd_tsdn(tsd), &buf_writer);
}
#undef PROF_RECENT_PRINT_BUFSIZE