29     if (fp_ != nullptr) {  in ~PerfFileWriter()
30         fclose(fp_);  in ~PerfFileWriter()
31         fp_ = nullptr;  in ~PerfFileWriter()
52     fp_ = fopen(resolvedPath.c_str(), "web+");  in Open()
53     if (fp_ == nullptr) {  in Open()
67     if (setvbuf(fp_, fileBuffer_.data(), _IOFBF, WRITER_BUFFER_SIZE) != 0) {  in Open()
76     HLOG_ASSERT(fp_ != nullptr);  in Close()
86     if (fclose(fp_) != 0) {  in Close()
90     fp_ = nullptr;  in Close()
151     HLOG_ASSERT(fp_ != nullptr);  in ReadDataSection()
152     if (fseek(fp_, dataSection_.offset, SEEK_SET) != 0) {  in ReadDataSection()
205     HLOG_ASSERT(fp_ != nullptr);  in Read()
208     if (fread(buf, len, 1, fp_) != 1) {  in Read()
227     off_t offset = ftello(fp_);  in GetFilePos()
241     if (len != 0u && fwrite(buf, len, 1, fp_) != 1) {  in Write()
258     if (fp_ == nullptr) {  in WriteAttrAndId()
260     } else if (fseek(fp_, header_.size, SEEK_SET) == -1) {  in WriteAttrAndId()
329     if (fseek(fp_, 0, SEEK_SET) == -1) {  in WriteHeader()
342     if (fseek(fp_, 0, SEEK_END) != 0) {  in WriteFeatureData()
346     if ((featureOffset = ftell(fp_)) == -1) {  in WriteFeatureData()
377     long offset = ftell(fp_);  in WriteFeatureData()