Move gettid() into libcutils.

Change-Id: Ic8a15036833e6d129b7998d954b804be391de399

base/Android.mk

@@ -44,6 +44,7 @@ LOCAL_SRC_FILES := $(libbase_src_files)
 LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
 LOCAL_CPPFLAGS := $(libbase_cppflags)
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
+LOCAL_STATIC_LIBRARIES := libcutils
 LOCAL_MULTILIB := both
 include $(BUILD_STATIC_LIBRARY)
 
@@ -53,6 +54,7 @@ LOCAL_CLANG := true
 LOCAL_WHOLE_STATIC_LIBRARIES := libbase
 LOCAL_SHARED_LIBRARIES := liblog
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
+LOCAL_SHARED_LIBRARIES := libcutils
 LOCAL_MULTILIB := both
 include $(BUILD_SHARED_LIBRARY)
 
@@ -64,6 +66,7 @@ LOCAL_SRC_FILES := $(libbase_src_files)
 LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
 LOCAL_CPPFLAGS := $(libbase_cppflags)
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
+LOCAL_STATIC_LIBRARIES := libcutils
 LOCAL_MULTILIB := both
 include $(BUILD_HOST_STATIC_LIBRARY)
 
@@ -72,6 +75,7 @@ LOCAL_MODULE := libbase
 LOCAL_WHOLE_STATIC_LIBRARIES := libbase
 LOCAL_SHARED_LIBRARIES := liblog
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
+LOCAL_STATIC_LIBRARIES := libcutils
 LOCAL_MULTILIB := both
 include $(BUILD_HOST_SHARED_LIBRARY)
 

base/logging.cpp

@@ -23,6 +23,7 @@
 #include <vector>
 
 #include "base/strings.h"
+#include "cutils/threads.h"
 
 // Headers for LogMessage::LogLine.
 #ifdef __ANDROID__
@@ -33,15 +34,6 @@
 #include <unistd.h>
 #endif
 
-// For GetTid.
-#if defined(__APPLE__)
-#include "AvailabilityMacros.h"  // For MAC_OS_X_VERSION_MAX_ALLOWED
-#include <sys/syscall.h>
-#include <sys/time.h>
-#elif !defined(__BIONIC__)
-#include <syscall.h>
-#endif
-
 namespace android {
 namespace base {
 
@@ -52,19 +44,6 @@ static std::unique_ptr<std::string> gCmdLine;
 static std::unique_ptr<std::string> gProgramInvocationName;
 static std::unique_ptr<std::string> gProgramInvocationShortName;
 
-#ifndef __ANDROID__
-static pid_t GetTid() {
-#if defined(__APPLE__)
-  uint64_t owner;
-  // Requires Mac OS 10.6
-  CHECK_PTHREAD_CALL(pthread_threadid_np, (NULL, &owner), __FUNCTION__);
-  return owner;
-#else
-  return syscall(__NR_gettid);
-#endif
-}
-#endif  // __ANDROID__
-
 const char* GetCmdLine() {
   return (gCmdLine.get() != nullptr) ? gCmdLine->c_str() : nullptr;
 }
@@ -261,7 +240,7 @@ void LogMessage::LogLine(const char* file, unsigned int line,
   CHECK_EQ(strlen(log_characters), FATAL + 1U);
   char severity = log_characters[log_severity];
   fprintf(stderr, "%s %c %5d %5d %s:%u] %s\n", ProgramInvocationShortName(),
-          severity, getpid(), GetTid(), file, line, message);
+          severity, getpid(), gettid(), file, line, message);
 #endif
 }
 

include/cutils/threads.h

@@ -37,9 +37,10 @@ typedef struct {
     pthread_mutex_t   lock;
     int               has_tls;
     pthread_key_t     tls;
-
 } thread_store_t;
 
+extern pid_t gettid();
+
 #define  THREAD_STORE_INITIALIZER  { PTHREAD_MUTEX_INITIALIZER, 0, 0 }
 
 #else // !defined(_WIN32)
@@ -51,7 +52,6 @@ typedef struct {
     int               has_tls;
     DWORD             tls;
     CRITICAL_SECTION  lock;
-
 } thread_store_t;
 
 #define  THREAD_STORE_INITIALIZER  { 0, 0, 0, {0, 0, 0, 0, 0, 0} }

libcutils/threads.c

@@ -14,9 +14,23 @@
 ** limitations under the License.
 */
 
-#include <cutils/threads.h>
+#include "cutils/threads.h"
 
 #if !defined(_WIN32)
+
+// For gettid.
+#if defined(__APPLE__)
+#include "AvailabilityMacros.h"  // For MAC_OS_X_VERSION_MAX_ALLOWED
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include "base/logging.h"
+#elif defined(__linux__) && !defined(__ANDROID__)
+#include <syscall.h>
+#include <unistd.h>
+#elif defined(_WIN32)
+#include <Windows.h>
+#endif
+
 void*  thread_store_get( thread_store_t*  store )
 {
     if (!store->has_tls)
@@ -42,6 +56,21 @@ extern void   thread_store_set( thread_store_t*          store,
     pthread_setspecific( store->tls, value );
 }
 
+// No definition needed for Android because we'll just pick up bionic's copy.
+#ifndef __ANDROID__
+pid_t gettid() {
+#if defined(__APPLE__)
+  uint64_t owner;
+  CHECK_PTHREAD_CALL(pthread_threadid_np, (NULL, &owner), __FUNCTION__);
+  return owner;
+#elif defined(__linux__)
+  return syscall(__NR_gettid);
+#elif defined(_WIN32)
+  return (pid_t)GetCurrentThreadId();
+#endif
+}
+#endif  // __ANDROID__
+
 #else /* !defined(_WIN32) */
 void*  thread_store_get( thread_store_t*  store )
 {