SignalSender      707 src/platform-freebsd.cc class SignalSender : public Thread {
SignalSender     1060 src/platform-linux.cc class SignalSender : public Thread {
SignalSender      782 src/platform-openbsd.cc class SignalSender : public Thread {
SignalSender      700 src/platform-solaris.cc class SignalSender : public Thread {