156         std::vector<char> buf(header_.attrSize);  in ReadAttrSection()  local
157         if (!Read(buf.data(), buf.size())) {  in ReadAttrSection()
172         attr.attr = *(reinterpret_cast<perf_event_attr *>(&buf[0]));  in ReadAttrSection()
173         attr.ids = *(reinterpret_cast<perf_file_section *>(&buf[attr_size]));  in ReadAttrSection()
260     HIPERF_BUF_ALIGN uint8_t buf[RECORD_SIZE_LIMIT];  in ReadRecord()  local
268         } else if (!Read(buf, sizeof(perf_event_header))) {  in ReadRecord()
272             perf_event_header *header = reinterpret_cast<perf_event_header *>(buf);  in ReadRecord()
273             if (header->size > sizeof(buf)) {  in ReadRecord()
279                 if (Read(buf + headerSize, header->size - headerSize)) {  in ReadRecord()
280                     uint8_t *data = buf;  in ReadRecord()
317 bool PerfFileReader::Read(void *buf, size_t len)  in Read()  argument
319     if (buf == nullptr || len == 0) {  in Read()
320         HLOG_ASSERT(buf != nullptr);  in Read()
325     if (fread(buf, len, 1, fp_) != 1) {  in Read()
337 bool PerfFileReader::Read(char *buf, uint64_t offset, size_t len)  in Read()  argument
339     if (buf == nullptr || len == 0) {  in Read()
340         HLOG_ASSERT(buf != nullptr);  in Read()
349     if (fread(buf, len, 1, fp_) != 1) {  in Read()
353     HLOGM("offset %" PRIx64 " len %zu buf %x %x %x %x", offset, len, buf[0], buf[1], buf[2],  in Read()
354           buf[3]);  in Read()
420         std::vector<char> buf(sectionHeader.size);  in ReadFeatureSection()  local
421         if (!Read(&buf[0], sectionHeader.offset, buf.size())) {  in ReadFeatureSection()
429                 std::make_unique<PerfFileSectionString>(feature, (char *)&buf[0], buf.size()));  in ReadFeatureSection()
432                 feature, (char *)&buf[0], buf.size()));  in ReadFeatureSection()
435                 std::make_unique<PerfFileSectionEventDesc>(feature, (char *)&buf[0], buf.size()));  in ReadFeatureSection()