fix: unify additional debug output (#1050)

src/logging.cc

@@ -88,10 +88,6 @@
 #  include <syslog.h>
 #endif
 
-#ifdef __ANDROID__
-#  include <android/log.h>
-#endif
-
 #ifdef HAVE_SYS_TYPES_H
 #  include <sys/types.h>
 #endif
@@ -787,24 +783,9 @@ inline void LogDestination::MaybeLogToStderr(LogSeverity severity,
                                              size_t prefix_len) {
   if ((severity >= FLAGS_stderrthreshold) || FLAGS_alsologtostderr) {
     ColoredWriteToStderr(severity, message, message_len);
-#ifdef GLOG_OS_WINDOWS
-    (void)prefix_len;
-    // On Windows, also output to the debugger
-    ::OutputDebugStringA(message);
-#elif defined(__ANDROID__)
-    // On Android, also output to logcat
-    const int android_log_levels[NUM_SEVERITIES] = {
-        ANDROID_LOG_INFO,
-        ANDROID_LOG_WARN,
-        ANDROID_LOG_ERROR,
-        ANDROID_LOG_FATAL,
-    };
-    __android_log_write(android_log_levels[severity],
-                        glog_internal_namespace_::ProgramInvocationShortName(),
-                        message + prefix_len);
-#else
-    (void)prefix_len;
-#endif
+    AlsoErrorWrite(severity,
+                   glog_internal_namespace_::ProgramInvocationShortName(),
+                   message + prefix_len);
   }
 }
 
@@ -1850,12 +1831,9 @@ void LogMessage::SendToLog() EXCLUSIVE_LOCKS_REQUIRED(log_mutex) {
     if (write(STDERR_FILENO, message, strlen(message)) < 0) {
       // Ignore errors.
     }
-#if defined(__ANDROID__)
-    // ANDROID_LOG_FATAL as this message is of FATAL severity.
-    __android_log_write(ANDROID_LOG_FATAL,
-                        glog_internal_namespace_::ProgramInvocationShortName(),
-                        message);
-#endif
+    AlsoErrorWrite(GLOG_FATAL,
+                   glog_internal_namespace_::ProgramInvocationShortName(),
+                   message);
     Fail();
   }
 }

src/utilities.cc

@@ -38,11 +38,13 @@
 #include <csignal>
 #include <cstdio>
 #include <cstdlib>
-#include <ctime>
 
 #include "base/googleinit.h"
 #include "config.h"
 
+#ifdef __ANDROID__
+#  include <android/log.h>
+#endif
 #ifdef HAVE_SYS_TIME_H
 #  include <sys/time.h>
 #endif
@@ -60,9 +62,6 @@
 #ifdef HAVE_PWD_H
 #  include <pwd.h>
 #endif
-#ifdef __ANDROID__
-#  include <android/log.h>
-#endif
 
 #if defined(HAVE___PROGNAME)
 extern char* __progname;
@@ -82,6 +81,29 @@ inline namespace glog_internal_namespace_ {
 
 constexpr int FileDescriptor::InvalidHandle;
 
+void AlsoErrorWrite(LogSeverity severity, const char* tag,
+                    const char* message) noexcept {
+#if defined(GLOG_OS_WINDOWS)
+  (void)severity;
+  (void)tag;
+  // On Windows, also output to the debugger
+  ::OutputDebugStringA(message);
+#elif defined(__ANDROID__)
+  constexpr int android_log_levels[] = {
+      ANDROID_LOG_INFO,
+      ANDROID_LOG_WARN,
+      ANDROID_LOG_ERROR,
+      ANDROID_LOG_FATAL,
+  };
+
+  __android_log_write(android_log_levels[severity], tag, message);
+#else
+  (void)severity;
+  (void)tag;
+  (void)message;
+#endif
+}
+
 }  // namespace glog_internal_namespace_
 
 }  // namespace google
@@ -106,12 +128,8 @@ static void DebugWriteToStderr(const char* data, void*) {
   if (write(STDERR_FILENO, data, strlen(data)) < 0) {
     // Ignore errors.
   }
-#  if defined(__ANDROID__)
-  // ANDROID_LOG_FATAL as fatal error occurred and now is dumping call stack.
-  __android_log_write(ANDROID_LOG_FATAL,
-                      glog_internal_namespace_::ProgramInvocationShortName(),
-                      data);
-#  endif
+  AlsoErrorWrite(GLOG_FATAL,
+                 glog_internal_namespace_::ProgramInvocationShortName(), data);
 }
 
 static void DebugWriteToString(const char* data, void* arg) {

src/utilities.h

@@ -186,6 +186,9 @@ inline namespace glog_internal_namespace_ {
 #  define ATTRIBUTE_NOINLINE
 #endif
 
+void AlsoErrorWrite(LogSeverity severity, const char* tag,
+                    const char* message) noexcept;
+
 const char* ProgramInvocationShortName();
 
 int32 GetMainThreadPid();