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Fallback to unbuffered printing if OOM

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This commit is contained in:
Yinan Zhang
2020-01-13 14:23:10 -08:00
parent cd6e908241
commit f81341a48b
4 changed files with 39 additions and 21 deletions
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21
src/prof_recent.c
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@@ -465,12 +465,17 @@ prof_recent_alloc_dump(tsd_t *tsd, void (*write_cb)(void *, const char *),
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);
buf_write_arg_t buf_arg;
buf_write_init(&buf_arg, write_cb, cbopaque, buf,
PROF_RECENT_PRINT_BUFSIZE);
emitter_t emitter;
emitter_init(&emitter, emitter_output_json_compact, buf_write_cb,
&buf_arg);
buf_write_arg_t buf_arg;
if (buf == NULL) {
emitter_init(&emitter, emitter_output_json_compact, write_cb,
cbopaque);
} else {
buf_write_init(&buf_arg, write_cb, cbopaque, buf,
PROF_RECENT_PRINT_BUFSIZE);
emitter_init(&emitter, emitter_output_json_compact,
buf_write_cb, &buf_arg);
}
emitter_begin(&emitter);
malloc_mutex_lock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
@@ -530,8 +535,10 @@ 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);
buf_write_flush(&buf_arg);
idalloctm(tsd_tsdn(tsd), buf, NULL, NULL, true, true);
if (buf != NULL) {
buf_write_flush(&buf_arg);
idalloctm(tsd_tsdn(tsd), buf, NULL, NULL, true, true);
}
}
#undef PROF_RECENT_PRINT_BUFSIZE