Android: Fix compile with unified headers

Unified headers now defines _POSIX_THREAD_SAFE_FUNCTIONS but not all
libc functions are available in all Android API versions.

Change-Id: I01c94f0b89e7f8aa8575e7bbda28d9fe41a68ff1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/corelib/global/qglobal.cpp

@@ -3344,7 +3344,11 @@ bool qunsetenv(const char *varName)
 #endif
 }
 
-#if defined(Q_OS_UNIX) && !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && (_POSIX_THREAD_SAFE_FUNCTIONS - 0 > 0)
+#if defined(Q_OS_ANDROID) && (__ANDROID_API__ < 21)
+typedef QThreadStorage<QJNIObjectPrivate> AndroidRandomStorage;
+Q_GLOBAL_STATIC(AndroidRandomStorage, randomTLS)
+
+#elif defined(Q_OS_UNIX) && !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && (_POSIX_THREAD_SAFE_FUNCTIONS - 0 > 0)
 
 #  if defined(Q_OS_INTEGRITY) && defined(__GHS_VERSION_NUMBER) && (__GHS_VERSION_NUMBER < 500)
 // older versions of INTEGRITY used a long instead of a uint for the seed.
@@ -3355,10 +3359,6 @@ typedef uint SeedStorageType;
 
 typedef QThreadStorage<SeedStorageType *> SeedStorage;
 Q_GLOBAL_STATIC(SeedStorage, randTLS)  // Thread Local Storage for seed value
-
-#elif defined(Q_OS_ANDROID)
-typedef QThreadStorage<QJNIObjectPrivate> AndroidRandomStorage;
-Q_GLOBAL_STATIC(AndroidRandomStorage, randomTLS)
 #endif
 
 /*!
@@ -3378,21 +3378,7 @@ Q_GLOBAL_STATIC(AndroidRandomStorage, randomTLS)
 */
 void qsrand(uint seed)
 {
-#if defined(Q_OS_UNIX) && !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && (_POSIX_THREAD_SAFE_FUNCTIONS - 0 > 0)
+#if defined(Q_OS_ANDROID) && (__ANDROID_API__ < 21)
-    SeedStorage *seedStorage = randTLS();
-    if (seedStorage) {
-        SeedStorageType *pseed = seedStorage->localData();
-        if (!pseed)
-            seedStorage->setLocalData(pseed = new SeedStorageType);
-        *pseed = seed;
-    } else {
-        //global static seed storage should always exist,
-        //except after being deleted by QGlobalStaticDeleter.
-        //But since it still can be called from destructor of another
-        //global static object, fallback to srand(seed)
-        srand(seed);
-    }
-#elif defined(Q_OS_ANDROID)
     if (randomTLS->hasLocalData()) {
         randomTLS->localData().callMethod<void>("setSeed", "(J)V", jlong(seed));
         return;
@@ -3407,6 +3393,20 @@ void qsrand(uint seed)
     }
 
     randomTLS->setLocalData(random);
+#elif defined(Q_OS_UNIX) && !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && (_POSIX_THREAD_SAFE_FUNCTIONS - 0 > 0)
+    SeedStorage *seedStorage = randTLS();
+    if (seedStorage) {
+        SeedStorageType *pseed = seedStorage->localData();
+        if (!pseed)
+            seedStorage->setLocalData(pseed = new SeedStorageType);
+        *pseed = seed;
+    } else {
+        //global static seed storage should always exist,
+        //except after being deleted by QGlobalStaticDeleter.
+        //But since it still can be called from destructor of another
+        //global static object, fallback to srand(seed)
+        srand(seed);
+    }
 #else
     // On Windows srand() and rand() already use Thread-Local-Storage
     // to store the seed between calls
@@ -3432,23 +3432,7 @@ void qsrand(uint seed)
 */
 int qrand()
 {
-#if defined(Q_OS_UNIX) && !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && (_POSIX_THREAD_SAFE_FUNCTIONS - 0 > 0)
+#if defined(Q_OS_ANDROID) && (__ANDROID_API__ < 21)
-    SeedStorage *seedStorage = randTLS();
-    if (seedStorage) {
-        SeedStorageType *pseed = seedStorage->localData();
-        if (!pseed) {
-            seedStorage->setLocalData(pseed = new SeedStorageType);
-            *pseed = 1;
-        }
-        return rand_r(pseed);
-    } else {
-        //global static seed storage should always exist,
-        //except after being deleted by QGlobalStaticDeleter.
-        //But since it still can be called from destructor of another
-        //global static object, fallback to rand()
-        return rand();
-    }
-#elif defined(Q_OS_ANDROID)
     AndroidRandomStorage *randomStorage = randomTLS();
     if (!randomStorage)
         return rand();
@@ -3468,6 +3452,22 @@ int qrand()
 
     randomStorage->setLocalData(random);
     return random.callMethod<jint>("nextInt", "(I)I", RAND_MAX);
+#elif defined(Q_OS_UNIX) && !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && (_POSIX_THREAD_SAFE_FUNCTIONS - 0 > 0)
+    SeedStorage *seedStorage = randTLS();
+    if (seedStorage) {
+        SeedStorageType *pseed = seedStorage->localData();
+        if (!pseed) {
+            seedStorage->setLocalData(pseed = new SeedStorageType);
+            *pseed = 1;
+        }
+        return rand_r(pseed);
+    } else {
+        //global static seed storage should always exist,
+        //except after being deleted by QGlobalStaticDeleter.
+        //But since it still can be called from destructor of another
+        //global static object, fallback to rand()
+        return rand();
+    }
 #else
     // On Windows srand() and rand() already use Thread-Local-Storage
     // to store the seed between calls

src/corelib/io/qfilesystemengine_unix.cpp

@@ -398,7 +398,7 @@ QString QFileSystemEngine::resolveGroupName(uint groupId)
 
 #if !defined(Q_OS_INTEGRITY)
     struct group *gr = 0;
-#if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_OPENBSD) && !defined(Q_OS_VXWORKS)
+#if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_OPENBSD) && !defined(Q_OS_VXWORKS) && (!defined(Q_OS_ANDROID) || defined(Q_OS_ANDROID) && (__ANDROID_API__ >= 24))
     size_max = sysconf(_SC_GETGR_R_SIZE_MAX);
     if (size_max == -1)
         size_max = 1024;

src/corelib/io/qfilesystemwatcher_inotify.cpp

@@ -222,6 +222,14 @@ QT_END_NAMESPACE
 
 #include <sys/inotify.h>
 
+// see https://github.com/android-ndk/ndk/issues/394
+# if defined(Q_OS_ANDROID) && (__ANDROID_API__ < 21)
+static inline int inotify_init1(int flags)
+{
+    return syscall(__NR_inotify_init1, flags);
+}
+# endif
+
 #endif
 
 QT_BEGIN_NAMESPACE
@@ -229,7 +237,7 @@ QT_BEGIN_NAMESPACE
 QInotifyFileSystemWatcherEngine *QInotifyFileSystemWatcherEngine::create(QObject *parent)
 {
     int fd = -1;
-#ifdef IN_CLOEXEC
+#if defined(IN_CLOEXEC)
     fd = inotify_init1(IN_CLOEXEC);
 #endif
     if (fd == -1) {

src/corelib/thread/qthread_unix.cpp

@@ -101,7 +101,7 @@
 # define SCHED_IDLE    5
 #endif
 
-#if defined(Q_OS_DARWIN) || !defined(Q_OS_OPENBSD) && defined(_POSIX_THREAD_PRIORITY_SCHEDULING) && (_POSIX_THREAD_PRIORITY_SCHEDULING-0 >= 0)
+#if defined(Q_OS_DARWIN) || !defined(Q_OS_ANDROID) && !defined(Q_OS_OPENBSD) && defined(_POSIX_THREAD_PRIORITY_SCHEDULING) && (_POSIX_THREAD_PRIORITY_SCHEDULING-0 >= 0)
 #define QT_HAS_THREAD_PRIORITY_SCHEDULING
 #endif