1 /* 2 ** 3 ** Copyright 2008, The Android Open Source Project 4 ** 5 ** Licensed under the Apache License, Version 2.0 (the "License"); 6 ** you may not use this file except in compliance with the License. 7 ** You may obtain a copy of the License at 8 ** 9 ** http://www.apache.org/licenses/LICENSE-2.0 10 ** 11 ** Unless required by applicable law or agreed to in writing, software 12 ** distributed under the License is distributed on an "AS IS" BASIS, 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ** See the License for the specific language governing permissions and 15 ** limitations under the License. 16 */ 17 18 #define LOG_TAG "mediaserver" 19 //#define LOG_NDEBUG 0 20 21 #include <fcntl.h> 22 #include <sys/prctl.h> 23 #include <sys/wait.h> 24 #include <binder/IPCThreadState.h> 25 #include <binder/ProcessState.h> 26 #include <binder/IServiceManager.h> 27 #include <cutils/properties.h> 28 #include <utils/Log.h> 29 #include "RegisterExtensions.h" 30 31 // from LOCAL_C_INCLUDES 32 #include "AudioFlinger.h" 33 #include "CameraService.h" 34 #include "MediaLogService.h" 35 #include "MediaPlayerService.h" 36 #include "AudioPolicyService.h" 37 #include "SoundTriggerHwService.h" 38 39 using namespace android; 40 41 int main(int argc __unused, char** argv) 42 { 43 signal(SIGPIPE, SIG_IGN); 44 char value[PROPERTY_VALUE_MAX]; 45 bool doLog = (property_get("ro.test_harness", value, "0") > 0) && (atoi(value) == 1); 46 pid_t childPid; 47 // FIXME The advantage of making the process containing media.log service the parent process of 48 // the process that contains all the other real services, is that it allows us to collect more 49 // detailed information such as signal numbers, stop and continue, resource usage, etc. 50 // But it is also more complex. Consider replacing this by independent processes, and using 51 // binder on death notification instead. 52 if (doLog && (childPid = fork()) != 0) { 53 // media.log service 54 //prctl(PR_SET_NAME, (unsigned long) "media.log", 0, 0, 0); 55 // unfortunately ps ignores PR_SET_NAME for the main thread, so use this ugly hack 56 strcpy(argv[0], "media.log"); 57 sp<ProcessState> proc(ProcessState::self()); 58 MediaLogService::instantiate(); 59 ProcessState::self()->startThreadPool(); 60 for (;;) { 61 siginfo_t info; 62 int ret = waitid(P_PID, childPid, &info, WEXITED | WSTOPPED | WCONTINUED); 63 if (ret == EINTR) { 64 continue; 65 } 66 if (ret < 0) { 67 break; 68 } 69 char buffer[32]; 70 const char *code; 71 switch (info.si_code) { 72 case CLD_EXITED: 73 code = "CLD_EXITED"; 74 break; 75 case CLD_KILLED: 76 code = "CLD_KILLED"; 77 break; 78 case CLD_DUMPED: 79 code = "CLD_DUMPED"; 80 break; 81 case CLD_STOPPED: 82 code = "CLD_STOPPED"; 83 break; 84 case CLD_TRAPPED: 85 code = "CLD_TRAPPED"; 86 break; 87 case CLD_CONTINUED: 88 code = "CLD_CONTINUED"; 89 break; 90 default: 91 snprintf(buffer, sizeof(buffer), "unknown (%d)", info.si_code); 92 code = buffer; 93 break; 94 } 95 struct rusage usage; 96 getrusage(RUSAGE_CHILDREN, &usage); 97 ALOG(LOG_ERROR, "media.log", "pid %d status %d code %s user %ld.%03lds sys %ld.%03lds", 98 info.si_pid, info.si_status, code, 99 usage.ru_utime.tv_sec, usage.ru_utime.tv_usec / 1000, 100 usage.ru_stime.tv_sec, usage.ru_stime.tv_usec / 1000); 101 sp<IServiceManager> sm = defaultServiceManager(); 102 sp<IBinder> binder = sm->getService(String16("media.log")); 103 if (binder != 0) { 104 Vector<String16> args; 105 binder->dump(-1, args); 106 } 107 switch (info.si_code) { 108 case CLD_EXITED: 109 case CLD_KILLED: 110 case CLD_DUMPED: { 111 ALOG(LOG_INFO, "media.log", "exiting"); 112 _exit(0); 113 // not reached 114 } 115 default: 116 break; 117 } 118 } 119 } else { 120 // all other services 121 if (doLog) { 122 prctl(PR_SET_PDEATHSIG, SIGKILL); // if parent media.log dies before me, kill me also 123 setpgid(0, 0); // but if I die first, don't kill my parent 124 } 125 sp<ProcessState> proc(ProcessState::self()); 126 sp<IServiceManager> sm = defaultServiceManager(); 127 ALOGI("ServiceManager: %p", sm.get()); 128 AudioFlinger::instantiate(); 129 MediaPlayerService::instantiate(); 130 CameraService::instantiate(); 131 AudioPolicyService::instantiate(); 132 SoundTriggerHwService::instantiate(); 133 registerExtensions(); 134 ProcessState::self()->startThreadPool(); 135 IPCThreadState::self()->joinThreadPool(); 136 } 137 } 138
