ACPR/android_system_core
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

add a ctor to Mutex to specify the type, which can be shared. This is used by sf and af an soon will allow some optimization in the kernel for non shared mutexes

Browse source
This commit is contained in:
Mathias Agopian 2009-07-13 21:59:37 -07:00 • committed by Alex Ray
parent 1555436473
commit de6926bc94
1 changed files with 17 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
include/utils/threads.h
View file

@ -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);
}