Loading include/arch/linux-sh/AndroidConfig.h 0 → 100644 +327 −0 Original line number Diff line number Diff line /* * Copyright (C) 2009 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * Android config -- "android-sh". Used for SuperH device builds. */ #ifndef _ANDROID_CONFIG_H #define _ANDROID_CONFIG_H /* * =========================================================================== * !!! IMPORTANT !!! * =========================================================================== * * This file is included by ALL C/C++ source files. Don't put anything in * here unless you are absolutely certain it can't go anywhere else. * * Any C++ stuff must be wrapped with "#ifdef __cplusplus". Do not use "//" * comments. */ /* * Threading model. Choose one: * * HAVE_PTHREADS - use the pthreads library. * HAVE_WIN32_THREADS - use Win32 thread primitives. * -- combine HAVE_CREATETHREAD, HAVE_CREATEMUTEX, and HAVE__BEGINTHREADEX */ #define HAVE_PTHREADS /* * Do we have the futex syscall? */ #define HAVE_FUTEX /* * Define if we already have the futex wrapper functions defined. Yes if * compiling against bionic. */ #define HAVE_FUTEX_WRAPPERS 1 /* * Process creation model. Choose one: * * HAVE_FORKEXEC - use fork() and exec() * HAVE_WIN32_PROC - use CreateProcess() */ #define HAVE_FORKEXEC /* * Process out-of-memory adjustment. Set if running on Linux, * where we can write to /proc/<pid>/oom_adj to modify the out-of-memory * badness adjustment. */ #define HAVE_OOM_ADJ /* * IPC model. Choose one: * * HAVE_SYSV_IPC - use the classic SysV IPC mechanisms (semget, shmget). * HAVE_MACOSX_IPC - use Macintosh IPC mechanisms (sem_open, mmap). * HAVE_WIN32_IPC - use Win32 IPC (CreateSemaphore, CreateFileMapping). * HAVE_ANDROID_IPC - use Android versions (?, mmap). */ #define HAVE_ANDROID_IPC /* * Memory-mapping model. Choose one: * * HAVE_POSIX_FILEMAP - use the Posix sys/mmap.h * HAVE_WIN32_FILEMAP - use Win32 filemaps */ #define HAVE_POSIX_FILEMAP /* * Define this if you have <termio.h> */ #define HAVE_TERMIO_H /* * Define this if you build against MSVCRT.DLL */ /* #define HAVE_MS_C_RUNTIME */ /* * Define this if you have sys/uio.h */ #define HAVE_SYS_UIO_H /* * Define this if your platforms implements symbolic links * in its filesystems */ #define HAVE_SYMLINKS /* * Define this if we have localtime_r(). */ /* #define HAVE_LOCALTIME_R */ /* * Define this if we have gethostbyname_r(). */ /* #define HAVE_GETHOSTBYNAME_R */ /* * Define this if we have ioctl(). */ #define HAVE_IOCTL /* * Define this if we want to use WinSock. */ /* #define HAVE_WINSOCK */ /* * Define this if have clock_gettime() and friends */ #define HAVE_POSIX_CLOCKS /* * Define this if we have pthread_cond_timedwait_monotonic() and * clock_gettime(CLOCK_MONOTONIC). */ /* #define HAVE_TIMEDWAIT_MONOTONIC */ /* * Define this if we have linux style epoll() */ #define HAVE_EPOLL /* * Endianness of the target machine. Choose one: * * HAVE_ENDIAN_H -- have endian.h header we can include. * HAVE_LITTLE_ENDIAN -- we are little endian. * HAVE_BIG_ENDIAN -- we are big endian. */ #define HAVE_ENDIAN_H #define HAVE_LITTLE_ENDIAN /* * We need to choose between 32-bit and 64-bit off_t. All of our code should * agree on the same size. For desktop systems, use 64-bit values, * because some of our libraries (e.g. wxWidgets) expect to be built that way. */ /* #define _FILE_OFFSET_BITS 64 */ /* #define _LARGEFILE_SOURCE 1 */ /* * Defined if we have the backtrace() call for retrieving a stack trace. * Needed for CallStack to operate; if not defined, CallStack is * non-functional. */ #define HAVE_BACKTRACE 0 /* * Defined if we have the dladdr() call for retrieving the symbol associated * with a memory address. If not defined, stack crawls will not have symbolic * information. */ #define HAVE_DLADDR 0 /* * Defined if we have the cxxabi.h header for demangling C++ symbols. If * not defined, stack crawls will be displayed with raw mangled symbols */ #define HAVE_CXXABI 0 /* * Defined if we have the gettid() system call. */ #define HAVE_GETTID /* * Defined if we have the sched_setscheduler() call */ #define HAVE_SCHED_SETSCHEDULER /* * Add any extra platform-specific defines here. */ /* #define __linux__ */ /* for SuperH */ /* * Define if we have <malloc.h> header */ #define HAVE_MALLOC_H /* * Define if we're running on *our* linux on device or emulator. */ #define HAVE_ANDROID_OS 1 /* * Define if we have Linux-style non-filesystem Unix Domain Sockets */ #define HAVE_LINUX_LOCAL_SOCKET_NAMESPACE 1 /* * Define if we have Linux's inotify in <sys/inotify.h>. */ #define HAVE_INOTIFY 1 /* * Define if we have madvise() in <sys/mman.h> */ #define HAVE_MADVISE 1 /* * Define if tm struct has tm_gmtoff field */ #define HAVE_TM_GMTOFF 1 /* * Define if dirent struct has d_type field */ #define HAVE_DIRENT_D_TYPE 1 /* * Define if libc includes Android system properties implementation. */ #define HAVE_LIBC_SYSTEM_PROPERTIES 1 /* * Define if system provides a system property server (should be * mutually exclusive with HAVE_LIBC_SYSTEM_PROPERTIES). */ /* #define HAVE_SYSTEM_PROPERTY_SERVER */ /* * What CPU architecture does this platform use? */ #define ARCH_SH /* * Define if the size of enums is as short as possible, */ /* #define HAVE_SHORT_ENUMS */ /* * sprintf() format string for shared library naming. */ #define OS_SHARED_LIB_FORMAT_STR "lib%s.so" /* * Do we have __memcmp16()? * * TODO : Investigate the perfomance impact of __memcmp16() * and implement it. * This influences on dalvikVM's string performance. * See dalvik/vm/InlineNative.c. */ /* #define HAVE__MEMCMP16 */ /* * type for the third argument to mincore(). */ #define MINCORE_POINTER_TYPE unsigned char * /* * Do we have the sigaction flag SA_NOCLDWAIT? */ #define HAVE_SA_NOCLDWAIT /* * The default path separator for the platform */ #define OS_PATH_SEPARATOR '/' /* * Is the filesystem case sensitive? */ #define OS_CASE_SENSITIVE /* * Define if <sys/socket.h> exists. */ #define HAVE_SYS_SOCKET_H 1 /* * Define if the strlcpy() function exists on the system. */ #define HAVE_STRLCPY 1 /* * Define if prctl() exists */ #define HAVE_PRCTL 1 /* * Define if writev() exists */ #define HAVE_WRITEV 1 /* * For dalvik/libcore */ #define CANT_PASS_VALIST_AS_CHARPTR /* * For external/bluez/utils/tools/hciattach.c * TODO : This definition should be somewhere in bionic/libc/kernel/(*). * Cosider the place and move it there. */ #define N_TTY 0 /* * Whether or not _Unwind_Context is defined as a struct. */ #define HAVE_UNWIND_CONTEXT_STRUCT #endif /* _ANDROID_CONFIG_H */ include/sysutils/NetlinkListener.h +2 −0 Original line number Diff line number Diff line Loading @@ -26,7 +26,9 @@ class NetlinkListener : public SocketListener { public: NetlinkListener(int socket); virtual ~NetlinkListener() {} protected: virtual bool onDataAvailable(SocketClient *cli); virtual void onEvent(NetlinkEvent *evt) = 0; }; #endif libcutils/Android.mk +4 −0 Original line number Diff line number Diff line Loading @@ -104,7 +104,11 @@ LOCAL_SRC_FILES := $(commonSources) ashmem-dev.c mq.c ifeq ($(TARGET_ARCH),arm) LOCAL_SRC_FILES += memset32.S atomic-android-arm.S else # !arm ifeq ($(TARGET_ARCH),sh) LOCAL_SRC_FILES += memory.c atomic-android-sh.c else # !sh LOCAL_SRC_FILES += memory.c endif # !sh endif # !arm LOCAL_C_INCLUDES := $(KERNEL_HEADERS) Loading libcutils/atomic-android-sh.c 0 → 100644 +159 −0 Original line number Diff line number Diff line /* * Copyright (C) 2007 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <cutils/atomic.h> #ifdef HAVE_WIN32_THREADS #include <windows.h> #else #include <sched.h> #endif /* * Note : * * (1) SuperH does not have CMPXCHG. It has only TAS for atomic * operations. It does not seem a good idea to implement CMPXCHG, * with TAS. So, we choose to implemnt these operations with * posix mutexes. Please be sure that this might cause performance * problem for Android-SH. Using LL/SC instructions supported in SH-X3, * best performnace would be realized. * * (2) Mutex initialization problem happens, which is commented for * ARM implementation, in this file above. * We follow the fact that the initializer for mutex is a simple zero * value. */ #include <pthread.h> #define SWAP_LOCK_COUNT 32U static pthread_mutex_t _swap_locks[SWAP_LOCK_COUNT]; #define SWAP_LOCK(addr) \ &_swap_locks[((unsigned)(void*)(addr) >> 3U) % SWAP_LOCK_COUNT] void android_atomic_write(int32_t value, volatile int32_t* addr) { int32_t oldValue; do { oldValue = *addr; } while (android_atomic_cmpxchg(oldValue, value, addr)); } int32_t android_atomic_inc(volatile int32_t* addr) { int32_t oldValue; do { oldValue = *addr; } while (android_atomic_cmpxchg(oldValue, oldValue+1, addr)); return oldValue; } int32_t android_atomic_dec(volatile int32_t* addr) { int32_t oldValue; do { oldValue = *addr; } while (android_atomic_cmpxchg(oldValue, oldValue-1, addr)); return oldValue; } int32_t android_atomic_add(int32_t value, volatile int32_t* addr) { int32_t oldValue; do { oldValue = *addr; } while (android_atomic_cmpxchg(oldValue, oldValue+value, addr)); return oldValue; } int32_t android_atomic_and(int32_t value, volatile int32_t* addr) { int32_t oldValue; do { oldValue = *addr; } while (android_atomic_cmpxchg(oldValue, oldValue&value, addr)); return oldValue; } int32_t android_atomic_or(int32_t value, volatile int32_t* addr) { int32_t oldValue; do { oldValue = *addr; } while (android_atomic_cmpxchg(oldValue, oldValue|value, addr)); return oldValue; } int32_t android_atomic_swap(int32_t value, volatile int32_t* addr) { int32_t oldValue; do { oldValue = *addr; } while (android_atomic_cmpxchg(oldValue, value, addr)); return oldValue; } int android_atomic_cmpxchg(int32_t oldvalue, int32_t newvalue, volatile int32_t* addr) { int result; pthread_mutex_t* lock = SWAP_LOCK(addr); pthread_mutex_lock(lock); if (*addr == oldvalue) { *addr = newvalue; result = 0; } else { result = 1; } pthread_mutex_unlock(lock); return result; } int64_t android_quasiatomic_swap_64(int64_t value, volatile int64_t* addr) { int64_t oldValue; pthread_mutex_t* lock = SWAP_LOCK(addr); pthread_mutex_lock(lock); oldValue = *addr; *addr = value; pthread_mutex_unlock(lock); return oldValue; } int android_quasiatomic_cmpxchg_64(int64_t oldvalue, int64_t newvalue, volatile int64_t* addr) { int result; pthread_mutex_t* lock = SWAP_LOCK(addr); pthread_mutex_lock(lock); if (*addr == oldvalue) { *addr = newvalue; result = 0; } else { result = 1; } pthread_mutex_unlock(lock); return result; } int64_t android_quasiatomic_read_64(volatile int64_t* addr) { int64_t result; pthread_mutex_t* lock = SWAP_LOCK(addr); pthread_mutex_lock(lock); result = *addr; pthread_mutex_unlock(lock); return result; } libcutils/atomic.c +4 −0 Original line number Diff line number Diff line Loading @@ -245,6 +245,10 @@ int64_t android_quasiatomic_read_64(volatile int64_t* addr) { return result; } /*****************************************************************************/ #elif __sh__ // implementation for SuperH is in atomic-android-sh.c. #else #error "Unsupported atomic operations for this platform" Loading Loading
include/arch/linux-sh/AndroidConfig.h 0 → 100644 +327 −0 Original line number Diff line number Diff line /* * Copyright (C) 2009 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * Android config -- "android-sh". Used for SuperH device builds. */ #ifndef _ANDROID_CONFIG_H #define _ANDROID_CONFIG_H /* * =========================================================================== * !!! IMPORTANT !!! * =========================================================================== * * This file is included by ALL C/C++ source files. Don't put anything in * here unless you are absolutely certain it can't go anywhere else. * * Any C++ stuff must be wrapped with "#ifdef __cplusplus". Do not use "//" * comments. */ /* * Threading model. Choose one: * * HAVE_PTHREADS - use the pthreads library. * HAVE_WIN32_THREADS - use Win32 thread primitives. * -- combine HAVE_CREATETHREAD, HAVE_CREATEMUTEX, and HAVE__BEGINTHREADEX */ #define HAVE_PTHREADS /* * Do we have the futex syscall? */ #define HAVE_FUTEX /* * Define if we already have the futex wrapper functions defined. Yes if * compiling against bionic. */ #define HAVE_FUTEX_WRAPPERS 1 /* * Process creation model. Choose one: * * HAVE_FORKEXEC - use fork() and exec() * HAVE_WIN32_PROC - use CreateProcess() */ #define HAVE_FORKEXEC /* * Process out-of-memory adjustment. Set if running on Linux, * where we can write to /proc/<pid>/oom_adj to modify the out-of-memory * badness adjustment. */ #define HAVE_OOM_ADJ /* * IPC model. Choose one: * * HAVE_SYSV_IPC - use the classic SysV IPC mechanisms (semget, shmget). * HAVE_MACOSX_IPC - use Macintosh IPC mechanisms (sem_open, mmap). * HAVE_WIN32_IPC - use Win32 IPC (CreateSemaphore, CreateFileMapping). * HAVE_ANDROID_IPC - use Android versions (?, mmap). */ #define HAVE_ANDROID_IPC /* * Memory-mapping model. Choose one: * * HAVE_POSIX_FILEMAP - use the Posix sys/mmap.h * HAVE_WIN32_FILEMAP - use Win32 filemaps */ #define HAVE_POSIX_FILEMAP /* * Define this if you have <termio.h> */ #define HAVE_TERMIO_H /* * Define this if you build against MSVCRT.DLL */ /* #define HAVE_MS_C_RUNTIME */ /* * Define this if you have sys/uio.h */ #define HAVE_SYS_UIO_H /* * Define this if your platforms implements symbolic links * in its filesystems */ #define HAVE_SYMLINKS /* * Define this if we have localtime_r(). */ /* #define HAVE_LOCALTIME_R */ /* * Define this if we have gethostbyname_r(). */ /* #define HAVE_GETHOSTBYNAME_R */ /* * Define this if we have ioctl(). */ #define HAVE_IOCTL /* * Define this if we want to use WinSock. */ /* #define HAVE_WINSOCK */ /* * Define this if have clock_gettime() and friends */ #define HAVE_POSIX_CLOCKS /* * Define this if we have pthread_cond_timedwait_monotonic() and * clock_gettime(CLOCK_MONOTONIC). */ /* #define HAVE_TIMEDWAIT_MONOTONIC */ /* * Define this if we have linux style epoll() */ #define HAVE_EPOLL /* * Endianness of the target machine. Choose one: * * HAVE_ENDIAN_H -- have endian.h header we can include. * HAVE_LITTLE_ENDIAN -- we are little endian. * HAVE_BIG_ENDIAN -- we are big endian. */ #define HAVE_ENDIAN_H #define HAVE_LITTLE_ENDIAN /* * We need to choose between 32-bit and 64-bit off_t. All of our code should * agree on the same size. For desktop systems, use 64-bit values, * because some of our libraries (e.g. wxWidgets) expect to be built that way. */ /* #define _FILE_OFFSET_BITS 64 */ /* #define _LARGEFILE_SOURCE 1 */ /* * Defined if we have the backtrace() call for retrieving a stack trace. * Needed for CallStack to operate; if not defined, CallStack is * non-functional. */ #define HAVE_BACKTRACE 0 /* * Defined if we have the dladdr() call for retrieving the symbol associated * with a memory address. If not defined, stack crawls will not have symbolic * information. */ #define HAVE_DLADDR 0 /* * Defined if we have the cxxabi.h header for demangling C++ symbols. If * not defined, stack crawls will be displayed with raw mangled symbols */ #define HAVE_CXXABI 0 /* * Defined if we have the gettid() system call. */ #define HAVE_GETTID /* * Defined if we have the sched_setscheduler() call */ #define HAVE_SCHED_SETSCHEDULER /* * Add any extra platform-specific defines here. */ /* #define __linux__ */ /* for SuperH */ /* * Define if we have <malloc.h> header */ #define HAVE_MALLOC_H /* * Define if we're running on *our* linux on device or emulator. */ #define HAVE_ANDROID_OS 1 /* * Define if we have Linux-style non-filesystem Unix Domain Sockets */ #define HAVE_LINUX_LOCAL_SOCKET_NAMESPACE 1 /* * Define if we have Linux's inotify in <sys/inotify.h>. */ #define HAVE_INOTIFY 1 /* * Define if we have madvise() in <sys/mman.h> */ #define HAVE_MADVISE 1 /* * Define if tm struct has tm_gmtoff field */ #define HAVE_TM_GMTOFF 1 /* * Define if dirent struct has d_type field */ #define HAVE_DIRENT_D_TYPE 1 /* * Define if libc includes Android system properties implementation. */ #define HAVE_LIBC_SYSTEM_PROPERTIES 1 /* * Define if system provides a system property server (should be * mutually exclusive with HAVE_LIBC_SYSTEM_PROPERTIES). */ /* #define HAVE_SYSTEM_PROPERTY_SERVER */ /* * What CPU architecture does this platform use? */ #define ARCH_SH /* * Define if the size of enums is as short as possible, */ /* #define HAVE_SHORT_ENUMS */ /* * sprintf() format string for shared library naming. */ #define OS_SHARED_LIB_FORMAT_STR "lib%s.so" /* * Do we have __memcmp16()? * * TODO : Investigate the perfomance impact of __memcmp16() * and implement it. * This influences on dalvikVM's string performance. * See dalvik/vm/InlineNative.c. */ /* #define HAVE__MEMCMP16 */ /* * type for the third argument to mincore(). */ #define MINCORE_POINTER_TYPE unsigned char * /* * Do we have the sigaction flag SA_NOCLDWAIT? */ #define HAVE_SA_NOCLDWAIT /* * The default path separator for the platform */ #define OS_PATH_SEPARATOR '/' /* * Is the filesystem case sensitive? */ #define OS_CASE_SENSITIVE /* * Define if <sys/socket.h> exists. */ #define HAVE_SYS_SOCKET_H 1 /* * Define if the strlcpy() function exists on the system. */ #define HAVE_STRLCPY 1 /* * Define if prctl() exists */ #define HAVE_PRCTL 1 /* * Define if writev() exists */ #define HAVE_WRITEV 1 /* * For dalvik/libcore */ #define CANT_PASS_VALIST_AS_CHARPTR /* * For external/bluez/utils/tools/hciattach.c * TODO : This definition should be somewhere in bionic/libc/kernel/(*). * Cosider the place and move it there. */ #define N_TTY 0 /* * Whether or not _Unwind_Context is defined as a struct. */ #define HAVE_UNWIND_CONTEXT_STRUCT #endif /* _ANDROID_CONFIG_H */
include/sysutils/NetlinkListener.h +2 −0 Original line number Diff line number Diff line Loading @@ -26,7 +26,9 @@ class NetlinkListener : public SocketListener { public: NetlinkListener(int socket); virtual ~NetlinkListener() {} protected: virtual bool onDataAvailable(SocketClient *cli); virtual void onEvent(NetlinkEvent *evt) = 0; }; #endif
libcutils/Android.mk +4 −0 Original line number Diff line number Diff line Loading @@ -104,7 +104,11 @@ LOCAL_SRC_FILES := $(commonSources) ashmem-dev.c mq.c ifeq ($(TARGET_ARCH),arm) LOCAL_SRC_FILES += memset32.S atomic-android-arm.S else # !arm ifeq ($(TARGET_ARCH),sh) LOCAL_SRC_FILES += memory.c atomic-android-sh.c else # !sh LOCAL_SRC_FILES += memory.c endif # !sh endif # !arm LOCAL_C_INCLUDES := $(KERNEL_HEADERS) Loading
libcutils/atomic-android-sh.c 0 → 100644 +159 −0 Original line number Diff line number Diff line /* * Copyright (C) 2007 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <cutils/atomic.h> #ifdef HAVE_WIN32_THREADS #include <windows.h> #else #include <sched.h> #endif /* * Note : * * (1) SuperH does not have CMPXCHG. It has only TAS for atomic * operations. It does not seem a good idea to implement CMPXCHG, * with TAS. So, we choose to implemnt these operations with * posix mutexes. Please be sure that this might cause performance * problem for Android-SH. Using LL/SC instructions supported in SH-X3, * best performnace would be realized. * * (2) Mutex initialization problem happens, which is commented for * ARM implementation, in this file above. * We follow the fact that the initializer for mutex is a simple zero * value. */ #include <pthread.h> #define SWAP_LOCK_COUNT 32U static pthread_mutex_t _swap_locks[SWAP_LOCK_COUNT]; #define SWAP_LOCK(addr) \ &_swap_locks[((unsigned)(void*)(addr) >> 3U) % SWAP_LOCK_COUNT] void android_atomic_write(int32_t value, volatile int32_t* addr) { int32_t oldValue; do { oldValue = *addr; } while (android_atomic_cmpxchg(oldValue, value, addr)); } int32_t android_atomic_inc(volatile int32_t* addr) { int32_t oldValue; do { oldValue = *addr; } while (android_atomic_cmpxchg(oldValue, oldValue+1, addr)); return oldValue; } int32_t android_atomic_dec(volatile int32_t* addr) { int32_t oldValue; do { oldValue = *addr; } while (android_atomic_cmpxchg(oldValue, oldValue-1, addr)); return oldValue; } int32_t android_atomic_add(int32_t value, volatile int32_t* addr) { int32_t oldValue; do { oldValue = *addr; } while (android_atomic_cmpxchg(oldValue, oldValue+value, addr)); return oldValue; } int32_t android_atomic_and(int32_t value, volatile int32_t* addr) { int32_t oldValue; do { oldValue = *addr; } while (android_atomic_cmpxchg(oldValue, oldValue&value, addr)); return oldValue; } int32_t android_atomic_or(int32_t value, volatile int32_t* addr) { int32_t oldValue; do { oldValue = *addr; } while (android_atomic_cmpxchg(oldValue, oldValue|value, addr)); return oldValue; } int32_t android_atomic_swap(int32_t value, volatile int32_t* addr) { int32_t oldValue; do { oldValue = *addr; } while (android_atomic_cmpxchg(oldValue, value, addr)); return oldValue; } int android_atomic_cmpxchg(int32_t oldvalue, int32_t newvalue, volatile int32_t* addr) { int result; pthread_mutex_t* lock = SWAP_LOCK(addr); pthread_mutex_lock(lock); if (*addr == oldvalue) { *addr = newvalue; result = 0; } else { result = 1; } pthread_mutex_unlock(lock); return result; } int64_t android_quasiatomic_swap_64(int64_t value, volatile int64_t* addr) { int64_t oldValue; pthread_mutex_t* lock = SWAP_LOCK(addr); pthread_mutex_lock(lock); oldValue = *addr; *addr = value; pthread_mutex_unlock(lock); return oldValue; } int android_quasiatomic_cmpxchg_64(int64_t oldvalue, int64_t newvalue, volatile int64_t* addr) { int result; pthread_mutex_t* lock = SWAP_LOCK(addr); pthread_mutex_lock(lock); if (*addr == oldvalue) { *addr = newvalue; result = 0; } else { result = 1; } pthread_mutex_unlock(lock); return result; } int64_t android_quasiatomic_read_64(volatile int64_t* addr) { int64_t result; pthread_mutex_t* lock = SWAP_LOCK(addr); pthread_mutex_lock(lock); result = *addr; pthread_mutex_unlock(lock); return result; }
libcutils/atomic.c +4 −0 Original line number Diff line number Diff line Loading @@ -245,6 +245,10 @@ int64_t android_quasiatomic_read_64(volatile int64_t* addr) { return result; } /*****************************************************************************/ #elif __sh__ // implementation for SuperH is in atomic-android-sh.c. #else #error "Unsupported atomic operations for this platform" Loading
