933 lines
27 KiB
C++
933 lines
27 KiB
C++
|
/* //device/libs/android_runtime/android_util_Process.cpp
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**
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** Copyright 2006, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#define LOG_TAG "Process"
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#include <utils/Log.h>
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#include <binder/IPCThreadState.h>
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#include <binder/ProcessState.h>
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#include <binder/IServiceManager.h>
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#include <utils/String8.h>
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#include <utils/Vector.h>
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#include <android_runtime/AndroidRuntime.h>
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#include "android_util_Binder.h"
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#include "JNIHelp.h"
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#include <sys/errno.h>
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#include <sys/resource.h>
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#include <sys/types.h>
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#include <cutils/sched_policy.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <grp.h>
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#include <pwd.h>
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#include <signal.h>
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/* desktop Linux needs a little help with gettid() */
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#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS)
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#define __KERNEL__
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# include <linux/unistd.h>
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#ifdef _syscall0
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_syscall0(pid_t,gettid)
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#else
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pid_t gettid() { return syscall(__NR_gettid);}
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#endif
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#undef __KERNEL__
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#endif
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#define POLICY_DEBUG 0
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#define GUARD_THREAD_PRIORITY 0
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using namespace android;
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#if GUARD_THREAD_PRIORITY
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Mutex gKeyCreateMutex;
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static pthread_key_t gBgKey = -1;
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#endif
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static void signalExceptionForPriorityError(JNIEnv* env, jobject obj, int err)
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{
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switch (err) {
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case EINVAL:
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jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
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break;
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case ESRCH:
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jniThrowException(env, "java/lang/IllegalArgumentException", "Given thread does not exist");
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break;
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case EPERM:
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jniThrowException(env, "java/lang/SecurityException", "No permission to modify given thread");
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break;
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case EACCES:
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jniThrowException(env, "java/lang/SecurityException", "No permission to set to given priority");
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break;
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default:
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jniThrowException(env, "java/lang/RuntimeException", "Unknown error");
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break;
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}
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}
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static void signalExceptionForGroupError(JNIEnv* env, jobject obj, int err)
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{
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switch (err) {
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case EINVAL:
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jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
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break;
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case ESRCH:
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jniThrowException(env, "java/lang/IllegalArgumentException", "Given thread does not exist");
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break;
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case EPERM:
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jniThrowException(env, "java/lang/SecurityException", "No permission to modify given thread");
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break;
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case EACCES:
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jniThrowException(env, "java/lang/SecurityException", "No permission to set to given group");
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break;
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default:
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jniThrowException(env, "java/lang/RuntimeException", "Unknown error");
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break;
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}
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}
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static void fakeProcessEntry(void* arg)
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{
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String8* cls = (String8*)arg;
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AndroidRuntime* jr = AndroidRuntime::getRuntime();
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jr->callMain(cls->string(), 0, NULL);
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delete cls;
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}
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jint android_os_Process_myPid(JNIEnv* env, jobject clazz)
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{
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return getpid();
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}
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jint android_os_Process_myUid(JNIEnv* env, jobject clazz)
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{
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return getuid();
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}
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jint android_os_Process_myTid(JNIEnv* env, jobject clazz)
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{
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return androidGetTid();
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}
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jint android_os_Process_getPpid(JNIEnv* env, jobject clazz)
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{
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return getppid();
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}
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jint android_os_Process_getUidForName(JNIEnv* env, jobject clazz, jstring name)
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{
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if (name == NULL) {
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jniThrowException(env, "java/lang/NullPointerException", NULL);
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return -1;
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}
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const jchar* str16 = env->GetStringCritical(name, 0);
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String8 name8;
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if (str16) {
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name8 = String8(str16, env->GetStringLength(name));
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env->ReleaseStringCritical(name, str16);
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}
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const size_t N = name8.size();
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if (N > 0) {
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const char* str = name8.string();
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for (size_t i=0; i<N; i++) {
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if (str[i] < '0' || str[i] > '9') {
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struct passwd* pwd = getpwnam(str);
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if (pwd == NULL) {
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return -1;
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}
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return pwd->pw_uid;
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}
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}
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return atoi(str);
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}
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return -1;
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}
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jint android_os_Process_getGidForName(JNIEnv* env, jobject clazz, jstring name)
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{
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if (name == NULL) {
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jniThrowException(env, "java/lang/NullPointerException", NULL);
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return -1;
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}
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const jchar* str16 = env->GetStringCritical(name, 0);
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String8 name8;
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if (str16) {
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name8 = String8(str16, env->GetStringLength(name));
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env->ReleaseStringCritical(name, str16);
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}
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const size_t N = name8.size();
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if (N > 0) {
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const char* str = name8.string();
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for (size_t i=0; i<N; i++) {
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if (str[i] < '0' || str[i] > '9') {
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struct group* grp = getgrnam(str);
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if (grp == NULL) {
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return -1;
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}
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return grp->gr_gid;
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}
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}
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return atoi(str);
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}
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return -1;
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}
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void android_os_Process_setThreadGroup(JNIEnv* env, jobject clazz, int pid, jint grp)
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{
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int res = androidSetThreadSchedulingGroup(pid, grp);
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if (res != NO_ERROR) {
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signalExceptionForGroupError(env, clazz, res == BAD_VALUE ? EINVAL : errno);
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return;
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}
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}
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void android_os_Process_setProcessGroup(JNIEnv* env, jobject clazz, int pid, jint grp)
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{
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DIR *d;
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FILE *fp;
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char proc_path[255];
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struct dirent *de;
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if (grp > ANDROID_TGROUP_MAX || grp < 0) {
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signalExceptionForGroupError(env, clazz, EINVAL);
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return;
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}
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#if POLICY_DEBUG
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char cmdline[32];
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int fd;
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strcpy(cmdline, "unknown");
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sprintf(proc_path, "/proc/%d/cmdline", pid);
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fd = open(proc_path, O_RDONLY);
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if (fd >= 0) {
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int rc = read(fd, cmdline, sizeof(cmdline)-1);
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cmdline[rc] = 0;
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close(fd);
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}
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if (grp == ANDROID_TGROUP_BG_NONINTERACT) {
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LOGD("setProcessGroup: vvv pid %d (%s)", pid, cmdline);
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} else {
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LOGD("setProcessGroup: ^^^ pid %d (%s)", pid, cmdline);
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}
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#endif
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sprintf(proc_path, "/proc/%d/task", pid);
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if (!(d = opendir(proc_path))) {
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// If the process exited on us, don't generate an exception
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if (errno != ENOENT)
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signalExceptionForGroupError(env, clazz, errno);
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return;
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}
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while ((de = readdir(d))) {
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int t_pid;
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int t_pri;
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if (de->d_name[0] == '.')
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continue;
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t_pid = atoi(de->d_name);
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if (!t_pid) {
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LOGE("Error getting pid for '%s'\n", de->d_name);
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continue;
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}
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t_pri = getpriority(PRIO_PROCESS, t_pid);
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||
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if (grp == ANDROID_TGROUP_DEFAULT &&
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t_pri >= ANDROID_PRIORITY_BACKGROUND) {
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// This task wants to stay at background
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continue;
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}
|
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||
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if (androidSetThreadSchedulingGroup(t_pid, grp) != NO_ERROR) {
|
||
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signalExceptionForGroupError(env, clazz, errno);
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break;
|
||
|
}
|
||
|
}
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closedir(d);
|
||
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}
|
||
|
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static void android_os_Process_setCanSelfBackground(JNIEnv* env, jobject clazz, jboolean bgOk) {
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// Establishes the calling thread as illegal to put into the background.
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// Typically used only for the system process's main looper.
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#if GUARD_THREAD_PRIORITY
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LOGV("Process.setCanSelfBackground(%d) : tid=%d", bgOk, androidGetTid());
|
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{
|
||
|
Mutex::Autolock _l(gKeyCreateMutex);
|
||
|
if (gBgKey == -1) {
|
||
|
pthread_key_create(&gBgKey, NULL);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// inverted: not-okay, we set a sentinel value
|
||
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pthread_setspecific(gBgKey, (void*)(bgOk ? 0 : 0xbaad));
|
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#endif
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|
}
|
||
|
|
||
|
void android_os_Process_setThreadPriority(JNIEnv* env, jobject clazz,
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jint pid, jint pri)
|
||
|
{
|
||
|
#if GUARD_THREAD_PRIORITY
|
||
|
// if we're putting the current thread into the background, check the TLS
|
||
|
// to make sure this thread isn't guarded. If it is, raise an exception.
|
||
|
if (pri >= ANDROID_PRIORITY_BACKGROUND) {
|
||
|
if (pid == androidGetTid()) {
|
||
|
void* bgOk = pthread_getspecific(gBgKey);
|
||
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if (bgOk == ((void*)0xbaad)) {
|
||
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LOGE("Thread marked fg-only put self in background!");
|
||
|
jniThrowException(env, "java/lang/SecurityException", "May not put this thread into background");
|
||
|
return;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
int rc = androidSetThreadPriority(pid, pri);
|
||
|
if (rc != 0) {
|
||
|
if (rc == INVALID_OPERATION) {
|
||
|
signalExceptionForPriorityError(env, clazz, errno);
|
||
|
} else {
|
||
|
signalExceptionForGroupError(env, clazz, errno);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
//LOGI("Setting priority of %d: %d, getpriority returns %d\n",
|
||
|
// pid, pri, getpriority(PRIO_PROCESS, pid));
|
||
|
}
|
||
|
|
||
|
void android_os_Process_setCallingThreadPriority(JNIEnv* env, jobject clazz,
|
||
|
jint pri)
|
||
|
{
|
||
|
jint tid = android_os_Process_myTid(env, clazz);
|
||
|
android_os_Process_setThreadPriority(env, clazz, tid, pri);
|
||
|
}
|
||
|
|
||
|
jint android_os_Process_getThreadPriority(JNIEnv* env, jobject clazz,
|
||
|
jint pid)
|
||
|
{
|
||
|
errno = 0;
|
||
|
jint pri = getpriority(PRIO_PROCESS, pid);
|
||
|
if (errno != 0) {
|
||
|
signalExceptionForPriorityError(env, clazz, errno);
|
||
|
}
|
||
|
//LOGI("Returning priority of %d: %d\n", pid, pri);
|
||
|
return pri;
|
||
|
}
|
||
|
|
||
|
jboolean android_os_Process_setOomAdj(JNIEnv* env, jobject clazz,
|
||
|
jint pid, jint adj)
|
||
|
{
|
||
|
#ifdef HAVE_OOM_ADJ
|
||
|
if (ProcessState::self()->supportsProcesses()) {
|
||
|
char text[64];
|
||
|
sprintf(text, "/proc/%d/oom_adj", pid);
|
||
|
int fd = open(text, O_WRONLY);
|
||
|
if (fd >= 0) {
|
||
|
sprintf(text, "%d", adj);
|
||
|
write(fd, text, strlen(text));
|
||
|
close(fd);
|
||
|
}
|
||
|
return true;
|
||
|
}
|
||
|
#endif
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
void android_os_Process_setArgV0(JNIEnv* env, jobject clazz, jstring name)
|
||
|
{
|
||
|
if (name == NULL) {
|
||
|
jniThrowException(env, "java/lang/NullPointerException", NULL);
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
const jchar* str = env->GetStringCritical(name, 0);
|
||
|
String8 name8;
|
||
|
if (str) {
|
||
|
name8 = String8(str, env->GetStringLength(name));
|
||
|
env->ReleaseStringCritical(name, str);
|
||
|
}
|
||
|
|
||
|
if (name8.size() > 0) {
|
||
|
ProcessState::self()->setArgV0(name8.string());
|
||
|
}
|
||
|
}
|
||
|
|
||
|
jint android_os_Process_setUid(JNIEnv* env, jobject clazz, jint uid)
|
||
|
{
|
||
|
#if HAVE_ANDROID_OS
|
||
|
return setuid(uid) == 0 ? 0 : errno;
|
||
|
#else
|
||
|
return ENOSYS;
|
||
|
#endif
|
||
|
}
|
||
|
|
||
|
jint android_os_Process_setGid(JNIEnv* env, jobject clazz, jint uid)
|
||
|
{
|
||
|
#if HAVE_ANDROID_OS
|
||
|
return setgid(uid) == 0 ? 0 : errno;
|
||
|
#else
|
||
|
return ENOSYS;
|
||
|
#endif
|
||
|
}
|
||
|
|
||
|
jboolean android_os_Process_supportsProcesses(JNIEnv* env, jobject clazz)
|
||
|
{
|
||
|
return ProcessState::self()->supportsProcesses();
|
||
|
}
|
||
|
|
||
|
static int pid_compare(const void* v1, const void* v2)
|
||
|
{
|
||
|
//LOGI("Compare %d vs %d\n", *((const jint*)v1), *((const jint*)v2));
|
||
|
return *((const jint*)v1) - *((const jint*)v2);
|
||
|
}
|
||
|
|
||
|
static jlong android_os_Process_getFreeMemory(JNIEnv* env, jobject clazz)
|
||
|
{
|
||
|
int fd = open("/proc/meminfo", O_RDONLY);
|
||
|
|
||
|
if (fd < 0) {
|
||
|
LOGW("Unable to open /proc/meminfo");
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
char buffer[256];
|
||
|
const int len = read(fd, buffer, sizeof(buffer)-1);
|
||
|
close(fd);
|
||
|
|
||
|
if (len < 0) {
|
||
|
LOGW("Unable to read /proc/meminfo");
|
||
|
return -1;
|
||
|
}
|
||
|
buffer[len] = 0;
|
||
|
|
||
|
int numFound = 0;
|
||
|
jlong mem = 0;
|
||
|
|
||
|
static const char* const sums[] = { "MemFree:", "Cached:", NULL };
|
||
|
static const int sumsLen[] = { strlen("MemFree:"), strlen("Cached:"), NULL };
|
||
|
|
||
|
char* p = buffer;
|
||
|
while (*p && numFound < 2) {
|
||
|
int i = 0;
|
||
|
while (sums[i]) {
|
||
|
if (strncmp(p, sums[i], sumsLen[i]) == 0) {
|
||
|
p += sumsLen[i];
|
||
|
while (*p == ' ') p++;
|
||
|
char* num = p;
|
||
|
while (*p >= '0' && *p <= '9') p++;
|
||
|
if (*p != 0) {
|
||
|
*p = 0;
|
||
|
p++;
|
||
|
if (*p == 0) p--;
|
||
|
}
|
||
|
mem += atoll(num) * 1024;
|
||
|
numFound++;
|
||
|
break;
|
||
|
}
|
||
|
i++;
|
||
|
}
|
||
|
p++;
|
||
|
}
|
||
|
|
||
|
return numFound > 0 ? mem : -1;
|
||
|
}
|
||
|
|
||
|
void android_os_Process_readProcLines(JNIEnv* env, jobject clazz, jstring fileStr,
|
||
|
jobjectArray reqFields, jlongArray outFields)
|
||
|
{
|
||
|
//LOGI("getMemInfo: %p %p", reqFields, outFields);
|
||
|
|
||
|
if (fileStr == NULL || reqFields == NULL || outFields == NULL) {
|
||
|
jniThrowException(env, "java/lang/NullPointerException", NULL);
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
const char* file8 = env->GetStringUTFChars(fileStr, NULL);
|
||
|
if (file8 == NULL) {
|
||
|
return;
|
||
|
}
|
||
|
String8 file(file8);
|
||
|
env->ReleaseStringUTFChars(fileStr, file8);
|
||
|
|
||
|
jsize count = env->GetArrayLength(reqFields);
|
||
|
if (count > env->GetArrayLength(outFields)) {
|
||
|
jniThrowException(env, "java/lang/IllegalArgumentException", "Array lengths differ");
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
Vector<String8> fields;
|
||
|
int i;
|
||
|
|
||
|
for (i=0; i<count; i++) {
|
||
|
jobject obj = env->GetObjectArrayElement(reqFields, i);
|
||
|
if (obj != NULL) {
|
||
|
const char* str8 = env->GetStringUTFChars((jstring)obj, NULL);
|
||
|
//LOGI("String at %d: %p = %s", i, obj, str8);
|
||
|
if (str8 == NULL) {
|
||
|
jniThrowException(env, "java/lang/NullPointerException", "Element in reqFields");
|
||
|
return;
|
||
|
}
|
||
|
fields.add(String8(str8));
|
||
|
env->ReleaseStringUTFChars((jstring)obj, str8);
|
||
|
} else {
|
||
|
jniThrowException(env, "java/lang/NullPointerException", "Element in reqFields");
|
||
|
return;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
jlong* sizesArray = env->GetLongArrayElements(outFields, 0);
|
||
|
if (sizesArray == NULL) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
//LOGI("Clearing %d sizes", count);
|
||
|
for (i=0; i<count; i++) {
|
||
|
sizesArray[i] = 0;
|
||
|
}
|
||
|
|
||
|
int fd = open(file.string(), O_RDONLY);
|
||
|
|
||
|
if (fd >= 0) {
|
||
|
const size_t BUFFER_SIZE = 2048;
|
||
|
char* buffer = (char*)malloc(BUFFER_SIZE);
|
||
|
int len = read(fd, buffer, BUFFER_SIZE-1);
|
||
|
close(fd);
|
||
|
|
||
|
if (len < 0) {
|
||
|
LOGW("Unable to read %s", file.string());
|
||
|
len = 0;
|
||
|
}
|
||
|
buffer[len] = 0;
|
||
|
|
||
|
int foundCount = 0;
|
||
|
|
||
|
char* p = buffer;
|
||
|
while (*p && foundCount < count) {
|
||
|
bool skipToEol = true;
|
||
|
//LOGI("Parsing at: %s", p);
|
||
|
for (i=0; i<count; i++) {
|
||
|
const String8& field = fields[i];
|
||
|
if (strncmp(p, field.string(), field.length()) == 0) {
|
||
|
p += field.length();
|
||
|
while (*p == ' ' || *p == '\t') p++;
|
||
|
char* num = p;
|
||
|
while (*p >= '0' && *p <= '9') p++;
|
||
|
skipToEol = *p != '\n';
|
||
|
if (*p != 0) {
|
||
|
*p = 0;
|
||
|
p++;
|
||
|
}
|
||
|
char* end;
|
||
|
sizesArray[i] = strtoll(num, &end, 10);
|
||
|
//LOGI("Field %s = %d", field.string(), sizesArray[i]);
|
||
|
foundCount++;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
if (skipToEol) {
|
||
|
while (*p && *p != '\n') {
|
||
|
p++;
|
||
|
}
|
||
|
if (*p == '\n') {
|
||
|
p++;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
free(buffer);
|
||
|
} else {
|
||
|
LOGW("Unable to open %s", file.string());
|
||
|
}
|
||
|
|
||
|
//LOGI("Done!");
|
||
|
env->ReleaseLongArrayElements(outFields, sizesArray, 0);
|
||
|
}
|
||
|
|
||
|
jintArray android_os_Process_getPids(JNIEnv* env, jobject clazz,
|
||
|
jstring file, jintArray lastArray)
|
||
|
{
|
||
|
if (file == NULL) {
|
||
|
jniThrowException(env, "java/lang/NullPointerException", NULL);
|
||
|
return NULL;
|
||
|
}
|
||
|
|
||
|
const char* file8 = env->GetStringUTFChars(file, NULL);
|
||
|
if (file8 == NULL) {
|
||
|
jniThrowException(env, "java/lang/OutOfMemoryError", NULL);
|
||
|
return NULL;
|
||
|
}
|
||
|
|
||
|
DIR* dirp = opendir(file8);
|
||
|
|
||
|
env->ReleaseStringUTFChars(file, file8);
|
||
|
|
||
|
if(dirp == NULL) {
|
||
|
return NULL;
|
||
|
}
|
||
|
|
||
|
jsize curCount = 0;
|
||
|
jint* curData = NULL;
|
||
|
if (lastArray != NULL) {
|
||
|
curCount = env->GetArrayLength(lastArray);
|
||
|
curData = env->GetIntArrayElements(lastArray, 0);
|
||
|
}
|
||
|
|
||
|
jint curPos = 0;
|
||
|
|
||
|
struct dirent* entry;
|
||
|
while ((entry=readdir(dirp)) != NULL) {
|
||
|
const char* p = entry->d_name;
|
||
|
while (*p) {
|
||
|
if (*p < '0' || *p > '9') break;
|
||
|
p++;
|
||
|
}
|
||
|
if (*p != 0) continue;
|
||
|
|
||
|
char* end;
|
||
|
int pid = strtol(entry->d_name, &end, 10);
|
||
|
//LOGI("File %s pid=%d\n", entry->d_name, pid);
|
||
|
if (curPos >= curCount) {
|
||
|
jsize newCount = (curCount == 0) ? 10 : (curCount*2);
|
||
|
jintArray newArray = env->NewIntArray(newCount);
|
||
|
if (newArray == NULL) {
|
||
|
closedir(dirp);
|
||
|
jniThrowException(env, "java/lang/OutOfMemoryError", NULL);
|
||
|
return NULL;
|
||
|
}
|
||
|
jint* newData = env->GetIntArrayElements(newArray, 0);
|
||
|
if (curData != NULL) {
|
||
|
memcpy(newData, curData, sizeof(jint)*curCount);
|
||
|
env->ReleaseIntArrayElements(lastArray, curData, 0);
|
||
|
}
|
||
|
lastArray = newArray;
|
||
|
curCount = newCount;
|
||
|
curData = newData;
|
||
|
}
|
||
|
|
||
|
curData[curPos] = pid;
|
||
|
curPos++;
|
||
|
}
|
||
|
|
||
|
closedir(dirp);
|
||
|
|
||
|
if (curData != NULL && curPos > 0) {
|
||
|
qsort(curData, curPos, sizeof(jint), pid_compare);
|
||
|
}
|
||
|
|
||
|
while (curPos < curCount) {
|
||
|
curData[curPos] = -1;
|
||
|
curPos++;
|
||
|
}
|
||
|
|
||
|
if (curData != NULL) {
|
||
|
env->ReleaseIntArrayElements(lastArray, curData, 0);
|
||
|
}
|
||
|
|
||
|
return lastArray;
|
||
|
}
|
||
|
|
||
|
enum {
|
||
|
PROC_TERM_MASK = 0xff,
|
||
|
PROC_ZERO_TERM = 0,
|
||
|
PROC_SPACE_TERM = ' ',
|
||
|
PROC_COMBINE = 0x100,
|
||
|
PROC_PARENS = 0x200,
|
||
|
PROC_OUT_STRING = 0x1000,
|
||
|
PROC_OUT_LONG = 0x2000,
|
||
|
PROC_OUT_FLOAT = 0x4000,
|
||
|
};
|
||
|
|
||
|
jboolean android_os_Process_parseProcLineArray(JNIEnv* env, jobject clazz,
|
||
|
char* buffer, jint startIndex, jint endIndex, jintArray format,
|
||
|
jobjectArray outStrings, jlongArray outLongs, jfloatArray outFloats)
|
||
|
{
|
||
|
|
||
|
const jsize NF = env->GetArrayLength(format);
|
||
|
const jsize NS = outStrings ? env->GetArrayLength(outStrings) : 0;
|
||
|
const jsize NL = outLongs ? env->GetArrayLength(outLongs) : 0;
|
||
|
const jsize NR = outFloats ? env->GetArrayLength(outFloats) : 0;
|
||
|
|
||
|
jint* formatData = env->GetIntArrayElements(format, 0);
|
||
|
jlong* longsData = outLongs ?
|
||
|
env->GetLongArrayElements(outLongs, 0) : NULL;
|
||
|
jfloat* floatsData = outFloats ?
|
||
|
env->GetFloatArrayElements(outFloats, 0) : NULL;
|
||
|
if (formatData == NULL || (NL > 0 && longsData == NULL)
|
||
|
|| (NR > 0 && floatsData == NULL)) {
|
||
|
if (formatData != NULL) {
|
||
|
env->ReleaseIntArrayElements(format, formatData, 0);
|
||
|
}
|
||
|
if (longsData != NULL) {
|
||
|
env->ReleaseLongArrayElements(outLongs, longsData, 0);
|
||
|
}
|
||
|
if (floatsData != NULL) {
|
||
|
env->ReleaseFloatArrayElements(outFloats, floatsData, 0);
|
||
|
}
|
||
|
jniThrowException(env, "java/lang/OutOfMemoryError", NULL);
|
||
|
return JNI_FALSE;
|
||
|
}
|
||
|
|
||
|
jsize i = startIndex;
|
||
|
jsize di = 0;
|
||
|
|
||
|
jboolean res = JNI_TRUE;
|
||
|
|
||
|
for (jsize fi=0; fi<NF; fi++) {
|
||
|
const jint mode = formatData[fi];
|
||
|
if ((mode&PROC_PARENS) != 0) {
|
||
|
i++;
|
||
|
}
|
||
|
const char term = (char)(mode&PROC_TERM_MASK);
|
||
|
const jsize start = i;
|
||
|
if (i >= endIndex) {
|
||
|
res = JNI_FALSE;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
jsize end = -1;
|
||
|
if ((mode&PROC_PARENS) != 0) {
|
||
|
while (buffer[i] != ')' && i < endIndex) {
|
||
|
i++;
|
||
|
}
|
||
|
end = i;
|
||
|
i++;
|
||
|
}
|
||
|
while (buffer[i] != term && i < endIndex) {
|
||
|
i++;
|
||
|
}
|
||
|
if (end < 0) {
|
||
|
end = i;
|
||
|
}
|
||
|
|
||
|
if (i < endIndex) {
|
||
|
i++;
|
||
|
if ((mode&PROC_COMBINE) != 0) {
|
||
|
while (buffer[i] == term && i < endIndex) {
|
||
|
i++;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
//LOGI("Field %d: %d-%d dest=%d mode=0x%x\n", i, start, end, di, mode);
|
||
|
|
||
|
if ((mode&(PROC_OUT_FLOAT|PROC_OUT_LONG|PROC_OUT_STRING)) != 0) {
|
||
|
char c = buffer[end];
|
||
|
buffer[end] = 0;
|
||
|
if ((mode&PROC_OUT_FLOAT) != 0 && di < NR) {
|
||
|
char* end;
|
||
|
floatsData[di] = strtof(buffer+start, &end);
|
||
|
}
|
||
|
if ((mode&PROC_OUT_LONG) != 0 && di < NL) {
|
||
|
char* end;
|
||
|
longsData[di] = strtoll(buffer+start, &end, 10);
|
||
|
}
|
||
|
if ((mode&PROC_OUT_STRING) != 0 && di < NS) {
|
||
|
jstring str = env->NewStringUTF(buffer+start);
|
||
|
env->SetObjectArrayElement(outStrings, di, str);
|
||
|
}
|
||
|
buffer[end] = c;
|
||
|
di++;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
env->ReleaseIntArrayElements(format, formatData, 0);
|
||
|
if (longsData != NULL) {
|
||
|
env->ReleaseLongArrayElements(outLongs, longsData, 0);
|
||
|
}
|
||
|
if (floatsData != NULL) {
|
||
|
env->ReleaseFloatArrayElements(outFloats, floatsData, 0);
|
||
|
}
|
||
|
|
||
|
return res;
|
||
|
}
|
||
|
|
||
|
jboolean android_os_Process_parseProcLine(JNIEnv* env, jobject clazz,
|
||
|
jbyteArray buffer, jint startIndex, jint endIndex, jintArray format,
|
||
|
jobjectArray outStrings, jlongArray outLongs, jfloatArray outFloats)
|
||
|
{
|
||
|
jbyte* bufferArray = env->GetByteArrayElements(buffer, NULL);
|
||
|
|
||
|
jboolean result = android_os_Process_parseProcLineArray(env, clazz,
|
||
|
(char*) bufferArray, startIndex, endIndex, format, outStrings,
|
||
|
outLongs, outFloats);
|
||
|
|
||
|
env->ReleaseByteArrayElements(buffer, bufferArray, 0);
|
||
|
|
||
|
return result;
|
||
|
}
|
||
|
|
||
|
jboolean android_os_Process_readProcFile(JNIEnv* env, jobject clazz,
|
||
|
jstring file, jintArray format, jobjectArray outStrings,
|
||
|
jlongArray outLongs, jfloatArray outFloats)
|
||
|
{
|
||
|
if (file == NULL || format == NULL) {
|
||
|
jniThrowException(env, "java/lang/NullPointerException", NULL);
|
||
|
return JNI_FALSE;
|
||
|
}
|
||
|
|
||
|
const char* file8 = env->GetStringUTFChars(file, NULL);
|
||
|
if (file8 == NULL) {
|
||
|
jniThrowException(env, "java/lang/OutOfMemoryError", NULL);
|
||
|
return JNI_FALSE;
|
||
|
}
|
||
|
int fd = open(file8, O_RDONLY);
|
||
|
env->ReleaseStringUTFChars(file, file8);
|
||
|
|
||
|
if (fd < 0) {
|
||
|
//LOGW("Unable to open process file: %s\n", file8);
|
||
|
return JNI_FALSE;
|
||
|
}
|
||
|
|
||
|
char buffer[256];
|
||
|
const int len = read(fd, buffer, sizeof(buffer)-1);
|
||
|
close(fd);
|
||
|
|
||
|
if (len < 0) {
|
||
|
//LOGW("Unable to open process file: %s fd=%d\n", file8, fd);
|
||
|
return JNI_FALSE;
|
||
|
}
|
||
|
buffer[len] = 0;
|
||
|
|
||
|
return android_os_Process_parseProcLineArray(env, clazz, buffer, 0, len,
|
||
|
format, outStrings, outLongs, outFloats);
|
||
|
|
||
|
}
|
||
|
|
||
|
void android_os_Process_setApplicationObject(JNIEnv* env, jobject clazz,
|
||
|
jobject binderObject)
|
||
|
{
|
||
|
if (binderObject == NULL) {
|
||
|
jniThrowException(env, "java/lang/NullPointerException", NULL);
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
sp<IBinder> binder = ibinderForJavaObject(env, binderObject);
|
||
|
}
|
||
|
|
||
|
void android_os_Process_sendSignal(JNIEnv* env, jobject clazz, jint pid, jint sig)
|
||
|
{
|
||
|
if (pid > 0) {
|
||
|
LOGI("Sending signal. PID: %d SIG: %d", pid, sig);
|
||
|
kill(pid, sig);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void android_os_Process_sendSignalQuiet(JNIEnv* env, jobject clazz, jint pid, jint sig)
|
||
|
{
|
||
|
if (pid > 0) {
|
||
|
kill(pid, sig);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static jlong android_os_Process_getElapsedCpuTime(JNIEnv* env, jobject clazz)
|
||
|
{
|
||
|
struct timespec ts;
|
||
|
|
||
|
int res = clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts);
|
||
|
|
||
|
if (res != 0) {
|
||
|
return (jlong) 0;
|
||
|
}
|
||
|
|
||
|
nsecs_t when = seconds_to_nanoseconds(ts.tv_sec) + ts.tv_nsec;
|
||
|
return (jlong) nanoseconds_to_milliseconds(when);
|
||
|
}
|
||
|
|
||
|
static jlong android_os_Process_getPss(JNIEnv* env, jobject clazz, jint pid)
|
||
|
{
|
||
|
char filename[64];
|
||
|
|
||
|
snprintf(filename, sizeof(filename), "/proc/%d/smaps", pid);
|
||
|
|
||
|
FILE * file = fopen(filename, "r");
|
||
|
if (!file) {
|
||
|
return (jlong) -1;
|
||
|
}
|
||
|
|
||
|
// Tally up all of the Pss from the various maps
|
||
|
char line[256];
|
||
|
jlong pss = 0;
|
||
|
while (fgets(line, sizeof(line), file)) {
|
||
|
jlong v;
|
||
|
if (sscanf(line, "Pss: %lld kB", &v) == 1) {
|
||
|
pss += v;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
fclose(file);
|
||
|
|
||
|
// Return the Pss value in bytes, not kilobytes
|
||
|
return pss * 1024;
|
||
|
}
|
||
|
|
||
|
static const JNINativeMethod methods[] = {
|
||
|
{"myPid", "()I", (void*)android_os_Process_myPid},
|
||
|
{"myTid", "()I", (void*)android_os_Process_myTid},
|
||
|
{"myUid", "()I", (void*)android_os_Process_myUid},
|
||
|
{"getUidForName", "(Ljava/lang/String;)I", (void*)android_os_Process_getUidForName},
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||
|
{"getGidForName", "(Ljava/lang/String;)I", (void*)android_os_Process_getGidForName},
|
||
|
{"setThreadPriority", "(II)V", (void*)android_os_Process_setThreadPriority},
|
||
|
{"setCanSelfBackground", "(Z)V", (void*)android_os_Process_setCanSelfBackground},
|
||
|
{"setThreadPriority", "(I)V", (void*)android_os_Process_setCallingThreadPriority},
|
||
|
{"getThreadPriority", "(I)I", (void*)android_os_Process_getThreadPriority},
|
||
|
{"setThreadGroup", "(II)V", (void*)android_os_Process_setThreadGroup},
|
||
|
{"setProcessGroup", "(II)V", (void*)android_os_Process_setProcessGroup},
|
||
|
{"setOomAdj", "(II)Z", (void*)android_os_Process_setOomAdj},
|
||
|
{"setArgV0", "(Ljava/lang/String;)V", (void*)android_os_Process_setArgV0},
|
||
|
{"setUid", "(I)I", (void*)android_os_Process_setUid},
|
||
|
{"setGid", "(I)I", (void*)android_os_Process_setGid},
|
||
|
{"sendSignal", "(II)V", (void*)android_os_Process_sendSignal},
|
||
|
{"sendSignalQuiet", "(II)V", (void*)android_os_Process_sendSignalQuiet},
|
||
|
{"supportsProcesses", "()Z", (void*)android_os_Process_supportsProcesses},
|
||
|
{"getFreeMemory", "()J", (void*)android_os_Process_getFreeMemory},
|
||
|
{"readProcLines", "(Ljava/lang/String;[Ljava/lang/String;[J)V", (void*)android_os_Process_readProcLines},
|
||
|
{"getPids", "(Ljava/lang/String;[I)[I", (void*)android_os_Process_getPids},
|
||
|
{"getPpid", "()I", (void*)android_os_Process_getPpid},
|
||
|
{"readProcFile", "(Ljava/lang/String;[I[Ljava/lang/String;[J[F)Z", (void*)android_os_Process_readProcFile},
|
||
|
{"parseProcLine", "([BII[I[Ljava/lang/String;[J[F)Z", (void*)android_os_Process_parseProcLine},
|
||
|
{"getElapsedCpuTime", "()J", (void*)android_os_Process_getElapsedCpuTime},
|
||
|
{"getPss", "(I)J", (void*)android_os_Process_getPss},
|
||
|
//{"setApplicationObject", "(Landroid/os/IBinder;)V", (void*)android_os_Process_setApplicationObject},
|
||
|
};
|
||
|
|
||
|
const char* const kProcessPathName = "android/os/Process";
|
||
|
|
||
|
int register_android_os_Process(JNIEnv* env)
|
||
|
{
|
||
|
jclass clazz;
|
||
|
|
||
|
clazz = env->FindClass(kProcessPathName);
|
||
|
LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.Process");
|
||
|
|
||
|
return AndroidRuntime::registerNativeMethods(
|
||
|
env, kProcessPathName,
|
||
|
methods, NELEM(methods));
|
||
|
}
|