__NR__gettid     1862 third_party/tcmalloc/chromium/src/base/linux_syscall_support.h   #define __NR__gettid __NR_gettid
__NR__gettid     1778 third_party/tcmalloc/vendor/src/base/linux_syscall_support.h   #define __NR__gettid __NR_gettid