android_util_Process.cpp revision 0bca96bcbfe559f9330a01f723c5c9cba51ec05a
1bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams/* //device/libs/android_runtime/android_util_Process.cpp 2bc0ca6ba4e31239bf77060578d0bdf1a10e04168Jason Sams** 3bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams** Copyright 2006, The Android Open Source Project 4bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams** 5bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams** Licensed under the Apache License, Version 2.0 (the "License"); 6bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams** you may not use this file except in compliance with the License. 7bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams** You may obtain a copy of the License at 8bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams** 9bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams** http://www.apache.org/licenses/LICENSE-2.0 10bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams** 11bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams** Unless required by applicable law or agreed to in writing, software 12bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams** distributed under the License is distributed on an "AS IS" BASIS, 13bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams** See the License for the specific language governing permissions and 15bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams** limitations under the License. 16bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams*/ 17bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 18bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#define LOG_TAG "Process" 19bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 20bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include <utils/Log.h> 21bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include <binder/IPCThreadState.h> 22bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include <binder/ProcessState.h> 23bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include <binder/IServiceManager.h> 24bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include <utils/String8.h> 25bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include <utils/Vector.h> 26bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 27bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include <android_runtime/AndroidRuntime.h> 28bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 29bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include "android_util_Binder.h" 30bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include "JNIHelp.h" 31bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 32bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include <sys/errno.h> 33bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include <sys/resource.h> 341ffd86b448d78366190c540f98f8b6d641cdb6cfYang Ni#include <sys/types.h> 35bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include <dirent.h> 36bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include <fcntl.h> 37bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include <grp.h> 38bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include <pwd.h> 39bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#include <signal.h> 40bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 41bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams/* desktop Linux needs a little help with gettid() */ 42dbe66d6783c1e53cd1572de0ef6ef6fdf6f76f48Jason Sams#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS) 43eb9aa675754c49f613c6ad71d41472b30f38b007Yang Ni#define __KERNEL__ 44dbe66d6783c1e53cd1572de0ef6ef6fdf6f76f48Jason Sams# include <linux/unistd.h> 45dbe66d6783c1e53cd1572de0ef6ef6fdf6f76f48Jason Sams#ifdef _syscall0 46dbe66d6783c1e53cd1572de0ef6ef6fdf6f76f48Jason Sams_syscall0(pid_t,gettid) 471ffd86b448d78366190c540f98f8b6d641cdb6cfYang Ni#else 48bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Samspid_t gettid() { return syscall(__NR_gettid);} 499e0afb5a2b3e476c42a373e7cd89cef4a34f8195Jason Sams#endif 50bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#undef __KERNEL__ 51bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#endif 52bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 53bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams/* 54bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams * List of cgroup names which map to ANDROID_TGROUP_ values in Thread.h 55bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams * and Process.java 56bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams * These names are used to construct the path to the cgroup control dir 57bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams */ 58bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 597257c7ee4b66f00c43d9235f3ac600061ae79968Alex Sakhartchoukstatic const char *cgroup_names[] = { NULL, "bg_non_interactive", "fg_boost" }; 607257c7ee4b66f00c43d9235f3ac600061ae79968Alex Sakhartchouk 61bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Samsusing namespace android; 62bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 6387fe59a2f4d4c74539bfa0bff5f9a7e320e99415Jason Samsstatic void signalExceptionForPriorityError(JNIEnv* env, jobject obj, int err) 6487fe59a2f4d4c74539bfa0bff5f9a7e320e99415Jason Sams{ 6587fe59a2f4d4c74539bfa0bff5f9a7e320e99415Jason Sams switch (err) { 6687fe59a2f4d4c74539bfa0bff5f9a7e320e99415Jason Sams case EINVAL: 6787fe59a2f4d4c74539bfa0bff5f9a7e320e99415Jason Sams jniThrowException(env, "java/lang/IllegalArgumentException", NULL); 6887fe59a2f4d4c74539bfa0bff5f9a7e320e99415Jason Sams break; 6987fe59a2f4d4c74539bfa0bff5f9a7e320e99415Jason Sams case ESRCH: 7087fe59a2f4d4c74539bfa0bff5f9a7e320e99415Jason Sams jniThrowException(env, "java/lang/IllegalArgumentException", "Given thread does not exist"); 7187fe59a2f4d4c74539bfa0bff5f9a7e320e99415Jason Sams break; 7287fe59a2f4d4c74539bfa0bff5f9a7e320e99415Jason Sams case EPERM: 7387fe59a2f4d4c74539bfa0bff5f9a7e320e99415Jason Sams jniThrowException(env, "java/lang/SecurityException", "No permission to modify given thread"); 7487fe59a2f4d4c74539bfa0bff5f9a7e320e99415Jason Sams break; 75bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams case EACCES: 76bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams jniThrowException(env, "java/lang/SecurityException", "No permission to set to given priority"); 77bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams break; 78bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams default: 79bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams jniThrowException(env, "java/lang/RuntimeException", "Unknown error"); 8014982c8eb9a17a95a817c1fd2571829be5b7017eJason Sams break; 8114982c8eb9a17a95a817c1fd2571829be5b7017eJason Sams } 8214982c8eb9a17a95a817c1fd2571829be5b7017eJason Sams} 8314982c8eb9a17a95a817c1fd2571829be5b7017eJason Sams 8414982c8eb9a17a95a817c1fd2571829be5b7017eJason Samsstatic void signalExceptionForGroupError(JNIEnv* env, jobject obj, int err) 8514982c8eb9a17a95a817c1fd2571829be5b7017eJason Sams{ 86bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams switch (err) { 87bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams case EINVAL: 88bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams jniThrowException(env, "java/lang/IllegalArgumentException", NULL); 89bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams break; 90bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams case ESRCH: 91bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams jniThrowException(env, "java/lang/IllegalArgumentException", "Given thread does not exist"); 927d9c5ffccb7a5e682860f752403e5a03aed587beAlex Sakhartchouk break; 933522f40418fdf877f5a136475dbf75e57a3b7c77Jason Sams case EPERM: 943522f40418fdf877f5a136475dbf75e57a3b7c77Jason Sams jniThrowException(env, "java/lang/SecurityException", "No permission to modify given thread"); 959e2bda58db9e6427a1640ea302d4df079ffa0252Tim Murray break; 96bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams case EACCES: 9747a5881b8f85d65c74f2471fe6261d4cdb3dce5eMiao Wang jniThrowException(env, "java/lang/SecurityException", "No permission to set to given group"); 98f82b626e0479ce4a23ebff1fc088e073dcabaa30Jason Sams break; 99f82b626e0479ce4a23ebff1fc088e073dcabaa30Jason Sams default: 100bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams jniThrowException(env, "java/lang/RuntimeException", "Unknown error"); 101bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams break; 102bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 103bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams} 104bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 105bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 106bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Samsstatic void fakeProcessEntry(void* arg) 107bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams{ 108bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams String8* cls = (String8*)arg; 10974a827988567a9d65954bb0d825a3ba4a97e2947Alex Sakhartchouk 11074a827988567a9d65954bb0d825a3ba4a97e2947Alex Sakhartchouk AndroidRuntime* jr = AndroidRuntime::getRuntime(); 11174a827988567a9d65954bb0d825a3ba4a97e2947Alex Sakhartchouk jr->callMain(cls->string(), 0, NULL); 11274a827988567a9d65954bb0d825a3ba4a97e2947Alex Sakhartchouk 11374a827988567a9d65954bb0d825a3ba4a97e2947Alex Sakhartchouk delete cls; 11474a827988567a9d65954bb0d825a3ba4a97e2947Alex Sakhartchouk} 115bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 116bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Samsjint android_os_Process_myPid(JNIEnv* env, jobject clazz) 117bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams{ 1185aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines return getpid(); 119bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams} 120bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 121bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Samsjint android_os_Process_myUid(JNIEnv* env, jobject clazz) 122bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams{ 123bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams return getuid(); 124bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams} 125bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 126bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Samsjint android_os_Process_myTid(JNIEnv* env, jobject clazz) 127bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams{ 128bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#ifdef HAVE_GETTID 129bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams return gettid(); 130bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#else 131bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams return getpid(); 132bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams#endif 133bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams} 134bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 135bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Samsjint android_os_Process_getUidForName(JNIEnv* env, jobject clazz, jstring name) 136bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams{ 137bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if (name == NULL) { 138bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams jniThrowException(env, "java/lang/NullPointerException", NULL); 139bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams return -1; 140bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 141bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 142bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams const jchar* str16 = env->GetStringCritical(name, 0); 143bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams String8 name8; 144bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if (str16) { 145bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams name8 = String8(str16, env->GetStringLength(name)); 146bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams env->ReleaseStringCritical(name, str16); 147bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 148bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 149bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams const size_t N = name8.size(); 150bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if (N > 0) { 151ae8b795a673b75bf0aec72620f4530db1415f907Stephen Hines const char* str = name8.string(); 15225a59d051a218bd608b005a149509464b3e6d4f0Alex Sakhartchouk for (size_t i=0; i<N; i++) { 15325a59d051a218bd608b005a149509464b3e6d4f0Alex Sakhartchouk if (str[i] < '0' || str[i] > '9') { 154bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams struct passwd* pwd = getpwnam(str); 155bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if (pwd == NULL) { 156bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams return -1; 157bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 158bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams return pwd->pw_uid; 159bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 160bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 161bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams return atoi(str); 162bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 163bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams return -1; 1647d9c5ffccb7a5e682860f752403e5a03aed587beAlex Sakhartchouk} 165bc0ca6ba4e31239bf77060578d0bdf1a10e04168Jason Sams 16625a59d051a218bd608b005a149509464b3e6d4f0Alex Sakhartchoukjint android_os_Process_getGidForName(JNIEnv* env, jobject clazz, jstring name) 16725a59d051a218bd608b005a149509464b3e6d4f0Alex Sakhartchouk{ 168bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if (name == NULL) { 169bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams jniThrowException(env, "java/lang/NullPointerException", NULL); 1706b387c1e466b507007f0b388da8b037362154e9aPirama Arumuga Nainar return -1; 1716b387c1e466b507007f0b388da8b037362154e9aPirama Arumuga Nainar } 1726b387c1e466b507007f0b388da8b037362154e9aPirama Arumuga Nainar 1736b387c1e466b507007f0b388da8b037362154e9aPirama Arumuga Nainar const jchar* str16 = env->GetStringCritical(name, 0); 1746b387c1e466b507007f0b388da8b037362154e9aPirama Arumuga Nainar String8 name8; 1756b387c1e466b507007f0b388da8b037362154e9aPirama Arumuga Nainar if (str16) { 1766b387c1e466b507007f0b388da8b037362154e9aPirama Arumuga Nainar name8 = String8(str16, env->GetStringLength(name)); 177bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams env->ReleaseStringCritical(name, str16); 178bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 179bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 180bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams const size_t N = name8.size(); 181bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if (N > 0) { 182bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams const char* str = name8.string(); 183bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams for (size_t i=0; i<N; i++) { 184bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if (str[i] < '0' || str[i] > '9') { 185bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams struct group* grp = getgrnam(str); 186bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if (grp == NULL) { 187bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams return -1; 188bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 189bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams return grp->gr_gid; 190bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 191bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 192bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams return atoi(str); 1939e913f4a5ab519af6c0c04f9b992d85f1c447d2dTim Murray } 19425a59d051a218bd608b005a149509464b3e6d4f0Alex Sakhartchouk return -1; 19525a59d051a218bd608b005a149509464b3e6d4f0Alex Sakhartchouk} 196bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 197bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Samsstatic int add_pid_to_cgroup(int pid, int grp) 198bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams{ 199bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams int fd; 200bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams char path[255]; 201bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams char text[64]; 202bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 203bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams sprintf(path, "/dev/cpuctl/%s/tasks", 204bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams (cgroup_names[grp] ? cgroup_names[grp] : "")); 205bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 206bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if ((fd = open(path, O_WRONLY)) < 0) 207bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams return -1; 208bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 209bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams sprintf(text, "%d", pid); 210bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if (write(fd, text, strlen(text)) < 0) { 211bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams close(fd); 2129e0afb5a2b3e476c42a373e7cd89cef4a34f8195Jason Sams return -1; 213bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 214bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 215bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams close(fd); 216bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams return 0; 217bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams} 218bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 219bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Samsvoid android_os_Process_setThreadGroup(JNIEnv* env, jobject clazz, int pid, jint grp) 220bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams{ 221cca3d6ca444bef3b6d75431ec19bd07bfe40a733Stephen Hines if (grp > ANDROID_TGROUP_MAX || grp < 0) { 222cca3d6ca444bef3b6d75431ec19bd07bfe40a733Stephen Hines signalExceptionForGroupError(env, clazz, EINVAL); 223cca3d6ca444bef3b6d75431ec19bd07bfe40a733Stephen Hines return; 224bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 225bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 226bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if (add_pid_to_cgroup(pid, grp)) { 227bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams // If the thread exited on us, don't generate an exception 228bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if (errno != ESRCH && errno != ENOENT) 229f598811a60088236222bb1879503842094ca378bStephen Hines signalExceptionForGroupError(env, clazz, errno); 230f598811a60088236222bb1879503842094ca378bStephen Hines } 231f598811a60088236222bb1879503842094ca378bStephen Hines} 232f598811a60088236222bb1879503842094ca378bStephen Hines 233f598811a60088236222bb1879503842094ca378bStephen Hinesvoid android_os_Process_setProcessGroup(JNIEnv* env, jobject clazz, int pid, jint grp) 234f598811a60088236222bb1879503842094ca378bStephen Hines{ 235f598811a60088236222bb1879503842094ca378bStephen Hines DIR *d; 236f598811a60088236222bb1879503842094ca378bStephen Hines FILE *fp; 237f598811a60088236222bb1879503842094ca378bStephen Hines char proc_path[255]; 238bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams struct dirent *de; 239bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 240f598811a60088236222bb1879503842094ca378bStephen Hines if (grp > ANDROID_TGROUP_MAX || grp < 0) { 241bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams signalExceptionForGroupError(env, clazz, EINVAL); 242bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams return; 243bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 244bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 245bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams sprintf(proc_path, "/proc/%d/task", pid); 246bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if (!(d = opendir(proc_path))) { 247bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams // If the process exited on us, don't generate an exception 248bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if (errno != ENOENT) 249bf2111d3b3de310932099514f06924e48fa1d7b2Jason Sams signalExceptionForGroupError(env, clazz, errno); 250bf2111d3b3de310932099514f06924e48fa1d7b2Jason Sams return; 251bf2111d3b3de310932099514f06924e48fa1d7b2Jason Sams } 252bf2111d3b3de310932099514f06924e48fa1d7b2Jason Sams 253bf2111d3b3de310932099514f06924e48fa1d7b2Jason Sams while ((de = readdir(d))) { 254bf2111d3b3de310932099514f06924e48fa1d7b2Jason Sams if (de->d_name[0] == '.') 255bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams continue; 256bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams 257bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams if (add_pid_to_cgroup(atoi(de->d_name), grp)) { 25884e3dea053bea25c1cec44ffb298f8b5b9b9141aTim Murray // If the thread exited on us, ignore it and keep going 259bfa5a8e76fd9469cdecb3115685ded677d2d210aJason Sams if (errno != ESRCH && errno != ENOENT) { 260bfa5a8e76fd9469cdecb3115685ded677d2d210aJason Sams signalExceptionForGroupError(env, clazz, errno); 261d5164d537c84867880694327727b5f22b0a3ccbdStephen McGroarty closedir(d); 26215c1d06c654c246b8e8047f64f781add32483576Stephen McGroarty return; 26384e3dea053bea25c1cec44ffb298f8b5b9b9141aTim Murray } 26484e3dea053bea25c1cec44ffb298f8b5b9b9141aTim Murray } 26564c682b65cd04ac83b51251b40dca14423df351aTim Murray } 26664c682b65cd04ac83b51251b40dca14423df351aTim Murray closedir(d); 26764c682b65cd04ac83b51251b40dca14423df351aTim Murray} 26864c682b65cd04ac83b51251b40dca14423df351aTim Murray 26964c682b65cd04ac83b51251b40dca14423df351aTim Murrayvoid android_os_Process_setThreadPriority(JNIEnv* env, jobject clazz, 27064c682b65cd04ac83b51251b40dca14423df351aTim Murray jint pid, jint pri) 27164c682b65cd04ac83b51251b40dca14423df351aTim Murray{ 27264c682b65cd04ac83b51251b40dca14423df351aTim Murray if (pri >= ANDROID_PRIORITY_BACKGROUND) { 27364c682b65cd04ac83b51251b40dca14423df351aTim Murray add_pid_to_cgroup(pid, ANDROID_TGROUP_BG_NONINTERACT); 27464c682b65cd04ac83b51251b40dca14423df351aTim Murray } else if (getpriority(PRIO_PROCESS, pid) >= ANDROID_PRIORITY_BACKGROUND) { 27564c682b65cd04ac83b51251b40dca14423df351aTim Murray add_pid_to_cgroup(pid, ANDROID_TGROUP_DEFAULT); 27664c682b65cd04ac83b51251b40dca14423df351aTim Murray } 27764c682b65cd04ac83b51251b40dca14423df351aTim Murray 27864c682b65cd04ac83b51251b40dca14423df351aTim Murray if (setpriority(PRIO_PROCESS, pid, pri) < 0) { 27964c682b65cd04ac83b51251b40dca14423df351aTim Murray signalExceptionForPriorityError(env, clazz, errno); 28064c682b65cd04ac83b51251b40dca14423df351aTim Murray } 28164c682b65cd04ac83b51251b40dca14423df351aTim Murray //LOGI("Setting priority of %d: %d, getpriority returns %d\n", 28264c682b65cd04ac83b51251b40dca14423df351aTim Murray // pid, pri, getpriority(PRIO_PROCESS, pid)); 28364c682b65cd04ac83b51251b40dca14423df351aTim Murray} 28464c682b65cd04ac83b51251b40dca14423df351aTim Murray 28584e3dea053bea25c1cec44ffb298f8b5b9b9141aTim Murrayvoid android_os_Process_setCallingThreadPriority(JNIEnv* env, jobject clazz, 28664c682b65cd04ac83b51251b40dca14423df351aTim Murray jint pri) 28764c682b65cd04ac83b51251b40dca14423df351aTim Murray{ 288aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray jint tid = android_os_Process_myTid(env, clazz); 289aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray android_os_Process_setThreadPriority(env, clazz, tid, pri); 290aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray} 291aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 292aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murrayjint android_os_Process_getThreadPriority(JNIEnv* env, jobject clazz, 293aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray jint pid) 294aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray{ 295aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray errno = 0; 296aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray jint pri = getpriority(PRIO_PROCESS, pid); 297aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray if (errno != 0) { 298aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray signalExceptionForPriorityError(env, clazz, errno); 299aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray } 300aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray //LOGI("Returning priority of %d: %d\n", pid, pri); 301aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray return pri; 302aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray} 303aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 304aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murrayjboolean android_os_Process_setOomAdj(JNIEnv* env, jobject clazz, 305aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray jint pid, jint adj) 306aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray{ 307aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray#ifdef HAVE_OOM_ADJ 308aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray if (ProcessState::self()->supportsProcesses()) { 309aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray char text[64]; 310aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray sprintf(text, "/proc/%d/oom_adj", pid); 311aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray int fd = open(text, O_WRONLY); 312aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray if (fd >= 0) { 313aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray sprintf(text, "%d", adj); 314aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray write(fd, text, strlen(text)); 315aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray close(fd); 316aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray return true; 317aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray } 318aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray } 319aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray#endif 320aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray return false; 321aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray} 322aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 323aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murrayvoid android_os_Process_setArgV0(JNIEnv* env, jobject clazz, jstring name) 324aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray{ 325aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray if (name == NULL) { 326aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray jniThrowException(env, "java/lang/NullPointerException", NULL); 327aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray return; 328aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray } 329aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 330aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray const jchar* str = env->GetStringCritical(name, 0); 331aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray String8 name8; 332aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray if (str) { 333aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray name8 = String8(str, env->GetStringLength(name)); 334aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray env->ReleaseStringCritical(name, str); 335aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray } 336aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 337aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray if (name8.size() > 0) { 338aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray ProcessState::self()->setArgV0(name8.string()); 339aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray } 340aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray} 341aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 342aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murrayjint android_os_Process_setUid(JNIEnv* env, jobject clazz, jint uid) 343aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray{ 344aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray #if HAVE_ANDROID_OS 345aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray return setuid(uid) == 0 ? 0 : errno; 346aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray #else 347aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray return ENOSYS; 348aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray #endif 349aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray} 350aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 351aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murrayjint android_os_Process_setGid(JNIEnv* env, jobject clazz, jint uid) 352aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray{ 353aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray #if HAVE_ANDROID_OS 354aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray return setgid(uid) == 0 ? 0 : errno; 355aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray #else 356aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray return ENOSYS; 357aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray #endif 358aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray} 359aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 360aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murrayjboolean android_os_Process_supportsProcesses(JNIEnv* env, jobject clazz) 361aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray{ 362aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray return ProcessState::self()->supportsProcesses(); 363aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray} 364aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 365aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murraystatic int pid_compare(const void* v1, const void* v2) 366aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray{ 367aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray //LOGI("Compare %d vs %d\n", *((const jint*)v1), *((const jint*)v2)); 368aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray return *((const jint*)v1) - *((const jint*)v2); 369aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray} 370aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 371aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murraystatic jlong android_os_Process_getFreeMemory(JNIEnv* env, jobject clazz) 372aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray{ 373aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray int fd = open("/proc/meminfo", O_RDONLY); 374aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 375aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray if (fd < 0) { 376aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray LOGW("Unable to open /proc/meminfo"); 377aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray return -1; 378aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray } 379aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 380aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray char buffer[256]; 381aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray const int len = read(fd, buffer, sizeof(buffer)-1); 382aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray close(fd); 383aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 384aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray if (len < 0) { 385aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray LOGW("Unable to read /proc/meminfo"); 386aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray return -1; 387aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray } 388aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray buffer[len] = 0; 389aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 390aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray int numFound = 0; 391aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray jlong mem = 0; 392aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 393aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray static const char* const sums[] = { "MemFree:", "Cached:", NULL }; 394aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray static const int sumsLen[] = { strlen("MemFree:"), strlen("Cached:"), NULL }; 395aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 396aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray char* p = buffer; 397aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray while (*p && numFound < 2) { 398aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray int i = 0; 399aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray while (sums[i]) { 400aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray if (strncmp(p, sums[i], sumsLen[i]) == 0) { 401aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray p += sumsLen[i]; 402aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray while (*p == ' ') p++; 403aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray char* num = p; 404aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray while (*p >= '0' && *p <= '9') p++; 405aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray if (*p != 0) { 406aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray *p = 0; 407aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray p++; 408aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray if (*p == 0) p--; 409aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray } 410aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray mem += atoll(num) * 1024; 411aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray numFound++; 412aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray break; 413aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray } 414aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray i++; 415aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray } 416aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray p++; 417aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray } 418aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 419aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray return numFound > 0 ? mem : -1; 420aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray} 421aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 422aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murrayvoid android_os_Process_readProcLines(JNIEnv* env, jobject clazz, jstring fileStr, 423aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray jobjectArray reqFields, jlongArray outFields) 424aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray{ 425aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray //LOGI("getMemInfo: %p %p", reqFields, outFields); 426aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 427aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray if (fileStr == NULL || reqFields == NULL || outFields == NULL) { 428aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray jniThrowException(env, "java/lang/NullPointerException", NULL); 429aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray return; 430aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray } 431aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 4322b999883f2f390ee43ed18317d77c810a0c6657bTim Murray const char* file8 = env->GetStringUTFChars(fileStr, NULL); 43364c682b65cd04ac83b51251b40dca14423df351aTim Murray if (file8 == NULL) { 43464c682b65cd04ac83b51251b40dca14423df351aTim Murray return; 43564c682b65cd04ac83b51251b40dca14423df351aTim Murray } 43664c682b65cd04ac83b51251b40dca14423df351aTim Murray String8 file(file8); 43764c682b65cd04ac83b51251b40dca14423df351aTim Murray env->ReleaseStringUTFChars(fileStr, file8); 43864c682b65cd04ac83b51251b40dca14423df351aTim Murray 43964c682b65cd04ac83b51251b40dca14423df351aTim Murray jsize count = env->GetArrayLength(reqFields); 44064c682b65cd04ac83b51251b40dca14423df351aTim Murray if (count > env->GetArrayLength(outFields)) { 44164c682b65cd04ac83b51251b40dca14423df351aTim Murray jniThrowException(env, "java/lang/IllegalArgumentException", "Array lengths differ"); 44264c682b65cd04ac83b51251b40dca14423df351aTim Murray return; 44364c682b65cd04ac83b51251b40dca14423df351aTim Murray } 44464c682b65cd04ac83b51251b40dca14423df351aTim Murray 44564c682b65cd04ac83b51251b40dca14423df351aTim Murray Vector<String8> fields; 446aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray int i; 44764c682b65cd04ac83b51251b40dca14423df351aTim Murray 44864c682b65cd04ac83b51251b40dca14423df351aTim Murray for (i=0; i<count; i++) { 44964c682b65cd04ac83b51251b40dca14423df351aTim Murray jobject obj = env->GetObjectArrayElement(reqFields, i); 45064c682b65cd04ac83b51251b40dca14423df351aTim Murray if (obj != NULL) { 45164c682b65cd04ac83b51251b40dca14423df351aTim Murray const char* str8 = env->GetStringUTFChars((jstring)obj, NULL); 45264c682b65cd04ac83b51251b40dca14423df351aTim Murray //LOGI("String at %d: %p = %s", i, obj, str8); 45364c682b65cd04ac83b51251b40dca14423df351aTim Murray if (str8 == NULL) { 45464c682b65cd04ac83b51251b40dca14423df351aTim Murray jniThrowException(env, "java/lang/NullPointerException", "Element in reqFields"); 45564c682b65cd04ac83b51251b40dca14423df351aTim Murray return; 45664c682b65cd04ac83b51251b40dca14423df351aTim Murray } 45764c682b65cd04ac83b51251b40dca14423df351aTim Murray fields.add(String8(str8)); 45864c682b65cd04ac83b51251b40dca14423df351aTim Murray env->ReleaseStringUTFChars((jstring)obj, str8); 45964c682b65cd04ac83b51251b40dca14423df351aTim Murray } else { 46064c682b65cd04ac83b51251b40dca14423df351aTim Murray jniThrowException(env, "java/lang/NullPointerException", "Element in reqFields"); 46164c682b65cd04ac83b51251b40dca14423df351aTim Murray return; 46264c682b65cd04ac83b51251b40dca14423df351aTim Murray } 46364c682b65cd04ac83b51251b40dca14423df351aTim Murray } 46464c682b65cd04ac83b51251b40dca14423df351aTim Murray 46564c682b65cd04ac83b51251b40dca14423df351aTim Murray jlong* sizesArray = env->GetLongArrayElements(outFields, 0); 46664c682b65cd04ac83b51251b40dca14423df351aTim Murray if (sizesArray == NULL) { 46764c682b65cd04ac83b51251b40dca14423df351aTim Murray return; 46864c682b65cd04ac83b51251b40dca14423df351aTim Murray } 46906deda3751a4a7358a7c7e03fbf1e4325fafb807Miao Wang 47006deda3751a4a7358a7c7e03fbf1e4325fafb807Miao Wang //LOGI("Clearing %d sizes", count); 47106deda3751a4a7358a7c7e03fbf1e4325fafb807Miao Wang for (i=0; i<count; i++) { 47206deda3751a4a7358a7c7e03fbf1e4325fafb807Miao Wang sizesArray[i] = 0; 47364c682b65cd04ac83b51251b40dca14423df351aTim Murray } 474aff744561bea3c8a7a7d59c0cb8cd9438f6dcd1cTim Murray 4755aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines int fd = open(file.string(), O_RDONLY); 4765aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines 4775aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines if (fd >= 0) { 4785aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines const size_t BUFFER_SIZE = 2048; 4795aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines char* buffer = (char*)malloc(BUFFER_SIZE); 4805aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines int len = read(fd, buffer, BUFFER_SIZE-1); 4815aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines close(fd); 4825aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines 4835aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines if (len < 0) { 4845aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines LOGW("Unable to read %s", file.string()); 4855aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines len = 0; 4865aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines } 4875aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines buffer[len] = 0; 4885aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines 4895aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines int foundCount = 0; 4905aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines 4915aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines char* p = buffer; 4925aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines while (*p && foundCount < count) { 4935aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines bool skipToEol = true; 4945aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines //LOGI("Parsing at: %s", p); 4955aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines for (i=0; i<count; i++) { 4965aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines const String8& field = fields[i]; 4975aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines if (strncmp(p, field.string(), field.length()) == 0) { 4985aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines p += field.length(); 4995aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines while (*p == ' ' || *p == '\t') p++; 5005aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines char* num = p; 5015aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines while (*p >= '0' && *p <= '9') p++; 5025aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines skipToEol = *p != '\n'; 5035aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines if (*p != 0) { 5045aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines *p = 0; 5055aa018cc36e589b07674957714d27ae3d1fa1c4eStephen Hines p++; 506bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams } 507bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams char* end; 508bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams sizesArray[i] = strtoll(num, &end, 10); 509bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams //LOGI("Field %s = %d", field.string(), sizesArray[i]); 510bad807405b2b9764372af1ad24bcfd4fb1f33d8eJason Sams foundCount++; 511 break; 512 } 513 } 514 if (skipToEol) { 515 while (*p && *p != '\n') { 516 p++; 517 } 518 if (*p == '\n') { 519 p++; 520 } 521 } 522 } 523 524 free(buffer); 525 } else { 526 LOGW("Unable to open %s", file.string()); 527 } 528 529 //LOGI("Done!"); 530 env->ReleaseLongArrayElements(outFields, sizesArray, 0); 531} 532 533jintArray android_os_Process_getPids(JNIEnv* env, jobject clazz, 534 jstring file, jintArray lastArray) 535{ 536 if (file == NULL) { 537 jniThrowException(env, "java/lang/NullPointerException", NULL); 538 return NULL; 539 } 540 541 const char* file8 = env->GetStringUTFChars(file, NULL); 542 if (file8 == NULL) { 543 jniThrowException(env, "java/lang/OutOfMemoryError", NULL); 544 return NULL; 545 } 546 547 DIR* dirp = opendir(file8); 548 549 env->ReleaseStringUTFChars(file, file8); 550 551 if(dirp == NULL) { 552 return NULL; 553 } 554 555 jsize curCount = 0; 556 jint* curData = NULL; 557 if (lastArray != NULL) { 558 curCount = env->GetArrayLength(lastArray); 559 curData = env->GetIntArrayElements(lastArray, 0); 560 } 561 562 jint curPos = 0; 563 564 struct dirent* entry; 565 while ((entry=readdir(dirp)) != NULL) { 566 const char* p = entry->d_name; 567 while (*p) { 568 if (*p < '0' || *p > '9') break; 569 p++; 570 } 571 if (*p != 0) continue; 572 573 char* end; 574 int pid = strtol(entry->d_name, &end, 10); 575 //LOGI("File %s pid=%d\n", entry->d_name, pid); 576 if (curPos >= curCount) { 577 jsize newCount = (curCount == 0) ? 10 : (curCount*2); 578 jintArray newArray = env->NewIntArray(newCount); 579 if (newArray == NULL) { 580 closedir(dirp); 581 jniThrowException(env, "java/lang/OutOfMemoryError", NULL); 582 return NULL; 583 } 584 jint* newData = env->GetIntArrayElements(newArray, 0); 585 if (curData != NULL) { 586 memcpy(newData, curData, sizeof(jint)*curCount); 587 env->ReleaseIntArrayElements(lastArray, curData, 0); 588 } 589 lastArray = newArray; 590 curCount = newCount; 591 curData = newData; 592 } 593 594 curData[curPos] = pid; 595 curPos++; 596 } 597 598 closedir(dirp); 599 600 if (curData != NULL && curPos > 0) { 601 qsort(curData, curPos, sizeof(jint), pid_compare); 602 } 603 604 while (curPos < curCount) { 605 curData[curPos] = -1; 606 curPos++; 607 } 608 609 if (curData != NULL) { 610 env->ReleaseIntArrayElements(lastArray, curData, 0); 611 } 612 613 return lastArray; 614} 615 616enum { 617 PROC_TERM_MASK = 0xff, 618 PROC_ZERO_TERM = 0, 619 PROC_SPACE_TERM = ' ', 620 PROC_COMBINE = 0x100, 621 PROC_PARENS = 0x200, 622 PROC_OUT_STRING = 0x1000, 623 PROC_OUT_LONG = 0x2000, 624 PROC_OUT_FLOAT = 0x4000, 625}; 626 627jboolean android_os_Process_parseProcLineArray(JNIEnv* env, jobject clazz, 628 char* buffer, jint startIndex, jint endIndex, jintArray format, 629 jobjectArray outStrings, jlongArray outLongs, jfloatArray outFloats) 630{ 631 632 const jsize NF = env->GetArrayLength(format); 633 const jsize NS = outStrings ? env->GetArrayLength(outStrings) : 0; 634 const jsize NL = outLongs ? env->GetArrayLength(outLongs) : 0; 635 const jsize NR = outFloats ? env->GetArrayLength(outFloats) : 0; 636 637 jint* formatData = env->GetIntArrayElements(format, 0); 638 jlong* longsData = outLongs ? 639 env->GetLongArrayElements(outLongs, 0) : NULL; 640 jfloat* floatsData = outFloats ? 641 env->GetFloatArrayElements(outFloats, 0) : NULL; 642 if (formatData == NULL || (NL > 0 && longsData == NULL) 643 || (NR > 0 && floatsData == NULL)) { 644 if (formatData != NULL) { 645 env->ReleaseIntArrayElements(format, formatData, 0); 646 } 647 if (longsData != NULL) { 648 env->ReleaseLongArrayElements(outLongs, longsData, 0); 649 } 650 if (floatsData != NULL) { 651 env->ReleaseFloatArrayElements(outFloats, floatsData, 0); 652 } 653 jniThrowException(env, "java/lang/OutOfMemoryError", NULL); 654 return JNI_FALSE; 655 } 656 657 jsize i = startIndex; 658 jsize di = 0; 659 660 jboolean res = JNI_TRUE; 661 662 for (jsize fi=0; fi<NF; fi++) { 663 const jint mode = formatData[fi]; 664 if ((mode&PROC_PARENS) != 0) { 665 i++; 666 } 667 const char term = (char)(mode&PROC_TERM_MASK); 668 const jsize start = i; 669 if (i >= endIndex) { 670 res = JNI_FALSE; 671 break; 672 } 673 674 jsize end = -1; 675 if ((mode&PROC_PARENS) != 0) { 676 while (buffer[i] != ')' && i < endIndex) { 677 i++; 678 } 679 end = i; 680 i++; 681 } 682 while (buffer[i] != term && i < endIndex) { 683 i++; 684 } 685 if (end < 0) { 686 end = i; 687 } 688 689 if (i < endIndex) { 690 i++; 691 if ((mode&PROC_COMBINE) != 0) { 692 while (buffer[i] == term && i < endIndex) { 693 i++; 694 } 695 } 696 } 697 698 //LOGI("Field %d: %d-%d dest=%d mode=0x%x\n", i, start, end, di, mode); 699 700 if ((mode&(PROC_OUT_FLOAT|PROC_OUT_LONG|PROC_OUT_STRING)) != 0) { 701 char c = buffer[end]; 702 buffer[end] = 0; 703 if ((mode&PROC_OUT_FLOAT) != 0 && di < NR) { 704 char* end; 705 floatsData[di] = strtof(buffer+start, &end); 706 } 707 if ((mode&PROC_OUT_LONG) != 0 && di < NL) { 708 char* end; 709 longsData[di] = strtoll(buffer+start, &end, 10); 710 } 711 if ((mode&PROC_OUT_STRING) != 0 && di < NS) { 712 jstring str = env->NewStringUTF(buffer+start); 713 env->SetObjectArrayElement(outStrings, di, str); 714 } 715 buffer[end] = c; 716 di++; 717 } 718 } 719 720 env->ReleaseIntArrayElements(format, formatData, 0); 721 if (longsData != NULL) { 722 env->ReleaseLongArrayElements(outLongs, longsData, 0); 723 } 724 if (floatsData != NULL) { 725 env->ReleaseFloatArrayElements(outFloats, floatsData, 0); 726 } 727 728 return res; 729} 730 731jboolean android_os_Process_parseProcLine(JNIEnv* env, jobject clazz, 732 jbyteArray buffer, jint startIndex, jint endIndex, jintArray format, 733 jobjectArray outStrings, jlongArray outLongs, jfloatArray outFloats) 734{ 735 jbyte* bufferArray = env->GetByteArrayElements(buffer, NULL); 736 737 jboolean result = android_os_Process_parseProcLineArray(env, clazz, 738 (char*) bufferArray, startIndex, endIndex, format, outStrings, 739 outLongs, outFloats); 740 741 env->ReleaseByteArrayElements(buffer, bufferArray, 0); 742 743 return result; 744} 745 746jboolean android_os_Process_readProcFile(JNIEnv* env, jobject clazz, 747 jstring file, jintArray format, jobjectArray outStrings, 748 jlongArray outLongs, jfloatArray outFloats) 749{ 750 if (file == NULL || format == NULL) { 751 jniThrowException(env, "java/lang/NullPointerException", NULL); 752 return JNI_FALSE; 753 } 754 755 const char* file8 = env->GetStringUTFChars(file, NULL); 756 if (file8 == NULL) { 757 jniThrowException(env, "java/lang/OutOfMemoryError", NULL); 758 return JNI_FALSE; 759 } 760 int fd = open(file8, O_RDONLY); 761 env->ReleaseStringUTFChars(file, file8); 762 763 if (fd < 0) { 764 //LOGW("Unable to open process file: %s\n", file8); 765 return JNI_FALSE; 766 } 767 768 char buffer[256]; 769 const int len = read(fd, buffer, sizeof(buffer)-1); 770 close(fd); 771 772 if (len < 0) { 773 //LOGW("Unable to open process file: %s fd=%d\n", file8, fd); 774 return JNI_FALSE; 775 } 776 buffer[len] = 0; 777 778 return android_os_Process_parseProcLineArray(env, clazz, buffer, 0, len, 779 format, outStrings, outLongs, outFloats); 780 781} 782 783void android_os_Process_setApplicationObject(JNIEnv* env, jobject clazz, 784 jobject binderObject) 785{ 786 if (binderObject == NULL) { 787 jniThrowException(env, "java/lang/NullPointerException", NULL); 788 return; 789 } 790 791 sp<IBinder> binder = ibinderForJavaObject(env, binderObject); 792} 793 794void android_os_Process_sendSignal(JNIEnv* env, jobject clazz, jint pid, jint sig) 795{ 796 if (pid > 0) { 797 LOGI("Sending signal. PID: %d SIG: %d", pid, sig); 798 kill(pid, sig); 799 } 800} 801 802static jlong android_os_Process_getElapsedCpuTime(JNIEnv* env, jobject clazz) 803{ 804 struct timespec ts; 805 806 int res = clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts); 807 808 if (res != 0) { 809 return (jlong) 0; 810 } 811 812 nsecs_t when = seconds_to_nanoseconds(ts.tv_sec) + ts.tv_nsec; 813 return (jlong) nanoseconds_to_milliseconds(when); 814} 815 816static jlong android_os_Process_getPss(JNIEnv* env, jobject clazz, jint pid) 817{ 818 char filename[64]; 819 820 snprintf(filename, sizeof(filename), "/proc/%d/smaps", pid); 821 822 FILE * file = fopen(filename, "r"); 823 if (!file) { 824 return (jlong) -1; 825 } 826 827 // Tally up all of the Pss from the various maps 828 char line[256]; 829 jlong pss = 0; 830 while (fgets(line, sizeof(line), file)) { 831 jlong v; 832 if (sscanf(line, "Pss: %lld kB", &v) == 1) { 833 pss += v; 834 } 835 } 836 837 fclose(file); 838 839 // Return the Pss value in bytes, not kilobytes 840 return pss * 1024; 841} 842 843static const JNINativeMethod methods[] = { 844 {"myPid", "()I", (void*)android_os_Process_myPid}, 845 {"myTid", "()I", (void*)android_os_Process_myTid}, 846 {"myUid", "()I", (void*)android_os_Process_myUid}, 847 {"getUidForName", "(Ljava/lang/String;)I", (void*)android_os_Process_getUidForName}, 848 {"getGidForName", "(Ljava/lang/String;)I", (void*)android_os_Process_getGidForName}, 849 {"setThreadPriority", "(II)V", (void*)android_os_Process_setThreadPriority}, 850 {"setThreadPriority", "(I)V", (void*)android_os_Process_setCallingThreadPriority}, 851 {"getThreadPriority", "(I)I", (void*)android_os_Process_getThreadPriority}, 852 {"setThreadGroup", "(II)V", (void*)android_os_Process_setThreadGroup}, 853 {"setProcessGroup", "(II)V", (void*)android_os_Process_setProcessGroup}, 854 {"setOomAdj", "(II)Z", (void*)android_os_Process_setOomAdj}, 855 {"setArgV0", "(Ljava/lang/String;)V", (void*)android_os_Process_setArgV0}, 856 {"setUid", "(I)I", (void*)android_os_Process_setUid}, 857 {"setGid", "(I)I", (void*)android_os_Process_setGid}, 858 {"sendSignal", "(II)V", (void*)android_os_Process_sendSignal}, 859 {"supportsProcesses", "()Z", (void*)android_os_Process_supportsProcesses}, 860 {"getFreeMemory", "()J", (void*)android_os_Process_getFreeMemory}, 861 {"readProcLines", "(Ljava/lang/String;[Ljava/lang/String;[J)V", (void*)android_os_Process_readProcLines}, 862 {"getPids", "(Ljava/lang/String;[I)[I", (void*)android_os_Process_getPids}, 863 {"readProcFile", "(Ljava/lang/String;[I[Ljava/lang/String;[J[F)Z", (void*)android_os_Process_readProcFile}, 864 {"parseProcLine", "([BII[I[Ljava/lang/String;[J[F)Z", (void*)android_os_Process_parseProcLine}, 865 {"getElapsedCpuTime", "()J", (void*)android_os_Process_getElapsedCpuTime}, 866 {"getPss", "(I)J", (void*)android_os_Process_getPss}, 867 //{"setApplicationObject", "(Landroid/os/IBinder;)V", (void*)android_os_Process_setApplicationObject}, 868}; 869 870const char* const kProcessPathName = "android/os/Process"; 871 872int register_android_os_Process(JNIEnv* env) 873{ 874 jclass clazz; 875 876 clazz = env->FindClass(kProcessPathName); 877 LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.Process"); 878 879 return AndroidRuntime::registerNativeMethods( 880 env, kProcessPathName, 881 methods, NELEM(methods)); 882} 883