diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/private/ui/SharedState.h | 2 | ||||
| -rw-r--r-- | include/utils/threads.h | 17 |
2 files changed, 19 insertions, 0 deletions
diff --git a/include/private/ui/SharedState.h b/include/private/ui/SharedState.h index 3bc7979..c9f6b5e 100644 --- a/include/private/ui/SharedState.h +++ b/include/private/ui/SharedState.h @@ -98,6 +98,8 @@ struct layer_cblk_t // (128 bytes) struct per_client_cblk_t // 4KB max { + per_client_cblk_t() : lock(Mutex::SHARED) { } + Mutex lock; Condition cv; layer_cblk_t layers[NUM_LAYERS_MAX] __attribute__((aligned(32))); diff --git a/include/utils/threads.h b/include/utils/threads.h index 5c03965..e9b0788 100644 --- a/include/utils/threads.h +++ b/include/utils/threads.h @@ -190,8 +190,14 @@ inline thread_id_t getThreadId() { */ class Mutex { public: + enum { + NORMAL = 0, + SHARED = 1 + }; + Mutex(); Mutex(const char* name); + Mutex(int type, const char* name = NULL); ~Mutex(); // lock or unlock the mutex @@ -235,6 +241,17 @@ inline Mutex::Mutex() { inline Mutex::Mutex(const char* name) { pthread_mutex_init(&mMutex, NULL); } +inline Mutex::Mutex(int type, const char* name) { + if (type == SHARED) { + pthread_mutexattr_t attr; + pthread_mutexattr_init(&attr); + pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED); + pthread_mutex_init(&mMutex, &attr); + pthread_mutexattr_destroy(&attr); + } else { + pthread_mutex_init(&mMutex, NULL); + } +} inline Mutex::~Mutex() { pthread_mutex_destroy(&mMutex); } |