前言

最近有个需求，需要在cpp bin中监听phone 进程异常死亡的状态。

代码

test.cpp

#define LOG_TAG "BINDER_DEATH"#include <binder/IServiceManager.h>
#include <binder/Binder.h>
#include <binder/Parcel.h>
#include <android-base/stringprintf.h>
#include <utils/String16.h>
#include <string>
#include <cstdlib>
#include <pthread.h>
#include <binder/ProcessState.h>
#include <binder/IPCThreadState.h>
#include <utils/Errors.h>namespace android{
int binderPhone();namespace {Mutex                     gLock;class DeathNotifier : public IBinder::DeathRecipient{public:DeathNotifier() {}virtual void binderDied(const wp<IBinder>& /*who*/) {ALOGV("binderDied");Mutex::Autolock _l(gLock);ALOGW("phone service died!");sleep(2);binderPhone();}};sp<DeathNotifier>         gDeathNotifier;
};int binderPhone(){sp<IServiceManager> sm = defaultServiceManager();sp<IBinder> binder = sm->checkService(String16("phone"));if (binder == nullptr) {ALOGE("step1: phone binder is null ! ");return -1;}binder = sm->getService(String16("phone"));if(binder == NULL){ALOGE("step2: phone binder is null ");return -1;}if (gDeathNotifier == NULL) {gDeathNotifier = new DeathNotifier();}status_t status = binder->linkToDeath(gDeathNotifier);if(status != NO_ERROR){ALOGE("linkToDeath fail");} else {ALOGD("linkToDeath sucessful");}return 0;
}
}int main(){android::ProcessState::self()->startThreadPool();android::binderPhone();android::IPCThreadState::self()->joinThreadPool();return 0;
}

Android.mk

LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE := binderDeathTest
LOCAL_SRC_FILES := test.cpp
LOCAL_CFLAGS := -Wno-unused-parameter
LOCAL_C_INCLUDES :=  $(LOCAL_PATH)/../../../inc/
LOCAL_SHARED_LIBRARIES := libcutils libutils liblog libbinder libbaseLOCAL_MODULE_TAGS := optionalinclude $(BUILD_EXECUTABLE)

测试

while(true){
kill -9 `pidof  com.android.phone`
sleep 1
}