Debug exit code

base/process/kill_posix.cc

Index: base/process/kill_posix.cc
diff --git a/base/process/kill_posix.cc b/base/process/kill_posix.cc
index 4dc60ef2a247345d6263ec678ca22fd5af04c95b..ed8c72ad7041afe597e678503e01339f80a429aa 100644
--- a/base/process/kill_posix.cc
+++ b/base/process/kill_posix.cc
@@ -27,18 +27,27 @@ namespace {
 TerminationStatus GetTerminationStatusImpl(ProcessHandle handle,
                                            bool can_block,
                                            int* exit_code) {
+  LOG(ERROR) << "In GetTerminationStatusImpl can_block=" << can_block;
+  fflush(stderr);
   int status = 0;
   const pid_t result = HANDLE_EINTR(waitpid(handle, &status,
                                             can_block ? 0 : WNOHANG));
+  LOG(ERROR) << "waitpid result=" << result << "status=" << status;
+  fflush(stderr);
+
   if (result == -1) {
     DPLOG(ERROR) << "waitpid(" << handle << ")";
     if (exit_code)
       *exit_code = 0;
+    LOG(ERROR) << "Normal termination";
+    fflush(stderr);
     return TERMINATION_STATUS_NORMAL_TERMINATION;
   } else if (result == 0) {
     // the child hasn't exited yet.
     if (exit_code)
       *exit_code = 0;
+    LOG(ERROR) << "Still running";
+    fflush(stderr);
     return TERMINATION_STATUS_STILL_RUNNING;
   }
 
@@ -46,6 +55,8 @@ TerminationStatus GetTerminationStatusImpl(ProcessHandle handle,
     *exit_code = status;
 
   if (WIFSIGNALED(status)) {
+    LOG(ERROR) << "WIFSIGNALED: signal" << WTERMSIG(status);
+    fflush(stderr);
     switch (WTERMSIG(status)) {
       case SIGABRT:
       case SIGBUS:
@@ -54,6 +65,7 @@ TerminationStatus GetTerminationStatusImpl(ProcessHandle handle,
       case SIGSEGV:
       case SIGTRAP:
       case SIGSYS:
+        LOG(ERROR) << "Process crashed";
         return TERMINATION_STATUS_PROCESS_CRASHED;
       case SIGKILL:
 #if defined(OS_CHROMEOS)
@@ -63,15 +75,19 @@ TerminationStatus GetTerminationStatusImpl(ProcessHandle handle,
 #endif
       case SIGINT:
       case SIGTERM:
+          LOG(ERROR) << "Process was killed";
         return TERMINATION_STATUS_PROCESS_WAS_KILLED;
       default:
         break;
     }
   }
 
-  if (WIFEXITED(status) && WEXITSTATUS(status) != 0)
+  if (WIFEXITED(status) && WEXITSTATUS(status) != 0) {
+    LOG(ERROR) << "Abnormal termination";
     return TERMINATION_STATUS_ABNORMAL_TERMINATION;
+  }
 
+  LOG(ERROR) << "Normal termination (last resort)";
   return TERMINATION_STATUS_NORMAL_TERMINATION;
 }