diff options
Diffstat (limited to 'libs/binder/ProcessState.cpp')
-rw-r--r-- | libs/binder/ProcessState.cpp | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/libs/binder/ProcessState.cpp b/libs/binder/ProcessState.cpp index add5e744db..11dd5258a7 100644 --- a/libs/binder/ProcessState.cpp +++ b/libs/binder/ProcessState.cpp @@ -90,6 +90,12 @@ sp<ProcessState> ProcessState::initWithDriver(const char* driver) return gProcess; } +sp<ProcessState> ProcessState::selfOrNull() +{ + Mutex::Autolock _l(gProcessMutex); + return gProcess; +} + void ProcessState::setContextObject(const sp<IBinder>& object) { setContextObject(object, String16("default")); @@ -176,6 +182,46 @@ bool ProcessState::becomeContextManager(context_check_func checkFunc, void* user return mManagesContexts; } +// Get references to userspace objects held by the kernel binder driver +// Writes up to count elements into buf, and returns the total number +// of references the kernel has, which may be larger than count. +// buf may be NULL if count is 0. The pointers returned by this method +// should only be used for debugging and not dereferenced, they may +// already be invalid. +ssize_t ProcessState::getKernelReferences(size_t buf_count, uintptr_t* buf) +{ + // TODO: remove these when they are defined by bionic's binder.h + struct binder_node_debug_info { + binder_uintptr_t ptr; + binder_uintptr_t cookie; + __u32 has_strong_ref; + __u32 has_weak_ref; + }; +#define BINDER_GET_NODE_DEBUG_INFO _IOWR('b', 11, struct binder_node_debug_info) + + binder_node_debug_info info = {}; + + uintptr_t* end = buf ? buf + buf_count : NULL; + size_t count = 0; + + do { + status_t result = ioctl(mDriverFD, BINDER_GET_NODE_DEBUG_INFO, &info); + if (result < 0) { + return -1; + } + if (info.ptr != 0) { + if (buf && buf < end) + *buf++ = info.ptr; + count++; + if (buf && buf < end) + *buf++ = info.cookie; + count++; + } + } while (info.ptr != 0); + + return count; +} + ProcessState::handle_entry* ProcessState::lookupHandleLocked(int32_t handle) { const size_t N=mHandleToObject.size(); |