ADHOC/replicant-frameworks_native
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Merge "Revert "Remove incorrect android_atomic_...64 use.""

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Hans Boehm 2014-08-06 22:48:23 +00:00 committed by Gerrit Code Review
commit 735082ea15
2 changed files with 15 additions and 20 deletions
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3
include/binder/Binder.h
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@ -17,7 +17,6 @@
#ifndef ANDROID_BINDER_H #ifndef ANDROID_BINDER_H
#define ANDROID_BINDER_H #define ANDROID_BINDER_H
#include <stdatomic.h>
#include <binder/IBinder.h> #include <binder/IBinder.h>
// --------------------------------------------------------------------------- // ---------------------------------------------------------------------------
@ -70,7 +69,7 @@ private:
class Extras; class Extras;
atomic_uintptr_t mExtras; // should be atomic<Extras *> Extras* mExtras;
void* mReserved0; void* mReserved0;
}; };

32
libs/binder/Binder.cpp
View File

@ -16,7 +16,7 @@
#include <binder/Binder.h> #include <binder/Binder.h>
#include <stdatomic.h> #include <utils/Atomic.h>
#include <utils/misc.h> #include <utils/misc.h>
#include <binder/BpBinder.h> #include <binder/BpBinder.h>
#include <binder/IInterface.h> #include <binder/IInterface.h>
@ -71,8 +71,8 @@ public:
// --------------------------------------------------------------------------- // ---------------------------------------------------------------------------
BBinder::BBinder() BBinder::BBinder()
: mExtras(NULL)
{ {
atomic_init(&mExtras, 0);
} }
bool BBinder::isBinderAlive() const bool BBinder::isBinderAlive() const
@ -139,19 +139,19 @@ void BBinder::attachObject(
const void* objectID, void* object, void* cleanupCookie, const void* objectID, void* object, void* cleanupCookie,
object_cleanup_func func) object_cleanup_func func)
{ {
Extras* e = reinterpret_cast<Extras*>( Extras* e = mExtras;
atomic_load_explicit(&mExtras, memory_order_acquire));
if (!e) { if (!e) {
e = new Extras; e = new Extras;
uintptr_t* expected = 0; #ifdef __LP64__
if (!atomic_compare_exchange_strong_explicit( if (android_atomic_release_cas64(0, reinterpret_cast<int64_t>(e),
&mExtras, &expected, reinterpret_cast<volatile int64_t*>(&mExtras)) != 0) {
reinterpret_cast<uintptr_t>(e), #else
memory_order_release, if (android_atomic_cmpxchg(0, reinterpret_cast<int32_t>(e),
memory_order_acquire)) { reinterpret_cast<volatile int32_t*>(&mExtras)) != 0) {
#endif
delete e; delete e;
e = reinterpret_cast<Extras*>(expected); // Filled in by CAS e = mExtras;
} }
if (e == 0) return; // out of memory if (e == 0) return; // out of memory
} }
@ -162,8 +162,7 @@ void BBinder::attachObject(
void* BBinder::findObject(const void* objectID) const void* BBinder::findObject(const void* objectID) const
{ {
Extras* e = reinterpret_cast<Extras*>( Extras* e = mExtras;
atomic_load_explicit(&mExtras, memory_order_acquire));
if (!e) return NULL; if (!e) return NULL;
AutoMutex _l(e->mLock); AutoMutex _l(e->mLock);
@ -172,8 +171,7 @@ void* BBinder::findObject(const void* objectID) const
void BBinder::detachObject(const void* objectID) void BBinder::detachObject(const void* objectID)
{ {
Extras* e = reinterpret_cast<Extras*>( Extras* e = mExtras;
atomic_load_explicit(&mExtras, memory_order_acquire));
if (!e) return; if (!e) return;
AutoMutex _l(e->mLock); AutoMutex _l(e->mLock);
@ -187,9 +185,7 @@ BBinder* BBinder::localBinder()
BBinder::~BBinder() BBinder::~BBinder()
{ {
Extras* e = reinterpret_cast<Extras*>( if (mExtras) delete mExtras;
atomic_load_explicit(&mExtras, memory_order_relaxed));
if (e) delete e;
} }