googletest/src/gtest-death-test.cc

259 // message is propagated back to the parent process.  Otherwise, the
269     FILE* parent = posix::FDOpen(flag->write_fd(), "w");
270     fputc(kDeathTestInternalError, parent);
271     fprintf(parent, "%s", message.c_str());
272     fflush(parent);
319 // This is called from a death test parent process to read a failure
403   // Called in the parent process only. Reads the result code of the death
426   // Descriptor to the child's write end of the pipe to the parent process.
427   // It is always -1 in the parent process.  The parent keeps its end of the
432 // Called in the parent process only. Reads the result code of the death
442   // its success), so it's okay to call this in the parent before
482   // The parent process considers the death test to be a failure if
598 // implementation uses pipes for child-to-parent communication. But due to
601 // 1. The parent creates a communication pipe and stores handles to both
603 // 2. The parent starts the child and provides it with the information
605 // 3. The child acquires the write end of the pipe and signals the parent
607 // 4. Now the parent can release the write end of the pipe on its side. If
610 //    parent now has to release it, or read operations on the read end of
612 // 5. The parent reads child's output through the pipe (outcome code and
640   // Event the child process uses to signal the parent that it has
642   // event the parent can release its own handles to make sure its
757   // The child process will share the standard handles with the parent.
773       NULL,   // Inherit the parent's environment.
847   // synchronization between descriptors and buffers in the parent process.
860     // concurrent writes to the log files.  We capture stderr in the parent
1234     DeathTestAbort("Unable to open parent process " +
1246   // The newly initialized handle is accessible only in in the parent
1257                    " from the parent process " +
1271                    " from the parent process " +
1283   // Signals the parent that the write end of the pipe has been acquired
1284   // so the parent can release its own write end.