static void android_os_Debug_dumpNativeBacktraceToFile(JNIEnv* env, jobject clazz,
jint pid, jstring fileName)
{
if (fileName == NULL) {
jniThrowNullPointerException(env, NULL);
return;
}
const jchar* str = env->GetStringCritical(fileName, 0);
String8 fileName8;
if (str) {
fileName8 = String8((char16_t*)str, env->GetStringLength(fileName));
env->ReleaseStringCritical(fileName, str);
}
int fd = open(fileName8.string(), O_CREAT | O_WRONLY | O_NOFOLLOW, 0666); /* -rw-rw-rw- */
if (fd < 0) {
fprintf(stderr, "Can't open %s: %s\n", fileName8.string(), strerror(errno));
return;
}
if (lseek(fd, 0, SEEK_END) < 0) {
fprintf(stderr, "lseek: %s\n", strerror(errno));
} else {
dump_backtrace_to_file(pid, fd);
}
close(fd);
}
static int do_explicit_dump(pid_t tid, bool dump_backtrace) {
fprintf(stdout, "Sending request to dump task %d.\n", tid);
if (dump_backtrace) {
fflush(stdout);
if (dump_backtrace_to_file(tid, fileno(stdout)) < 0) {
fputs("Error dumping backtrace.\n", stderr);
return 1;
}
} else {
char tombstone_path[PATH_MAX];
if (dump_tombstone(tid, tombstone_path, sizeof(tombstone_path)) < 0) {
fputs("Error dumping tombstone.\n", stderr);
return 1;
}
fprintf(stderr, "Tombstone written to: %s\n", tombstone_path);
}
return 0;
}
ECode CDebug::DumpNativeBacktraceToFile(
/* [in] */ Int32 pid,
/* [in] */ const String& file)
{
if (file.IsNull()) {
//jniThrowNullPointerException(env, NULL);
return E_NULL_POINTER_EXCEPTION;
}
int fd = open(file.string(), O_CREAT | O_WRONLY | O_NOFOLLOW, 0666); /* -rw-rw-rw- */
if (fd < 0) {
fprintf(stderr, "Can't open %s: %s\n", file.string(), strerror(errno));
return NOERROR;
}
if (lseek(fd, 0, SEEK_END) < 0) {
fprintf(stderr, "lseek: %s\n", strerror(errno));
} else {
dump_backtrace_to_file(pid, fd);
}
close(fd);
return NOERROR;
}
/* dump Dalvik and native stack traces, return the trace file location (NULL if none) */
const char *dump_traces() {
const char* result = NULL;
char traces_path[PROPERTY_VALUE_MAX] = "";
property_get("dalvik.vm.stack-trace-file", traces_path, "");
if (!traces_path[0]) return NULL;
/* move the old traces.txt (if any) out of the way temporarily */
char anr_traces_path[PATH_MAX];
strlcpy(anr_traces_path, traces_path, sizeof(anr_traces_path));
strlcat(anr_traces_path, ".anr", sizeof(anr_traces_path));
if (rename(traces_path, anr_traces_path) && errno != ENOENT) {
fprintf(stderr, "rename(%s, %s): %s\n", traces_path, anr_traces_path, strerror(errno));
return NULL; // Can't rename old traces.txt -- no permission? -- leave it alone instead
}
/* make the directory if necessary */
char anr_traces_dir[PATH_MAX];
strlcpy(anr_traces_dir, traces_path, sizeof(anr_traces_dir));
char *slash = strrchr(anr_traces_dir, '/');
if (slash != NULL) {
*slash = '\0';
if (!mkdir(anr_traces_dir, 0775)) {
chown(anr_traces_dir, AID_SYSTEM, AID_SYSTEM);
chmod(anr_traces_dir, 0775);
} else if (errno != EEXIST) {
fprintf(stderr, "mkdir(%s): %s\n", anr_traces_dir, strerror(errno));
return NULL;
}
}
/* create a new, empty traces.txt file to receive stack dumps */
int fd = open(traces_path, O_CREAT | O_WRONLY | O_TRUNC | O_NOFOLLOW, 0666); /* -rw-rw-rw- */
if (fd < 0) {
fprintf(stderr, "%s: %s\n", traces_path, strerror(errno));
return NULL;
}
int chmod_ret = fchmod(fd, 0666);
if (chmod_ret < 0) {
fprintf(stderr, "fchmod on %s failed: %s\n", traces_path, strerror(errno));
close(fd);
return NULL;
}
/* walk /proc and kill -QUIT all Dalvik processes */
DIR *proc = opendir("/proc");
if (proc == NULL) {
fprintf(stderr, "/proc: %s\n", strerror(errno));
goto error_close_fd;
}
/* use inotify to find when processes are done dumping */
int ifd = inotify_init();
if (ifd < 0) {
fprintf(stderr, "inotify_init: %s\n", strerror(errno));
goto error_close_fd;
}
int wfd = inotify_add_watch(ifd, traces_path, IN_CLOSE_WRITE);
if (wfd < 0) {
fprintf(stderr, "inotify_add_watch(%s): %s\n", traces_path, strerror(errno));
goto error_close_ifd;
}
struct dirent *d;
int dalvik_found = 0;
while ((d = readdir(proc))) {
int pid = atoi(d->d_name);
if (pid <= 0) continue;
char path[PATH_MAX];
char data[PATH_MAX];
snprintf(path, sizeof(path), "/proc/%d/exe", pid);
ssize_t len = readlink(path, data, sizeof(data) - 1);
if (len <= 0) {
continue;
}
data[len] = '\0';
if (!strcmp(data, "/system/bin/app_process")) {
/* skip zygote -- it won't dump its stack anyway */
snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
int fd = open(path, O_RDONLY);
len = read(fd, data, sizeof(data) - 1);
close(fd);
if (len <= 0) {
continue;
}
data[len] = '\0';
if (!strcmp(data, "zygote")) {
continue;
}
++dalvik_found;
if (kill(pid, SIGQUIT)) {
fprintf(stderr, "kill(%d, SIGQUIT): %s\n", pid, strerror(errno));
continue;
}
/* wait for the writable-close notification from inotify */
struct pollfd pfd = { ifd, POLLIN, 0 };
int ret = poll(&pfd, 1, 200); /* 200 msec timeout */
if (ret < 0) {
fprintf(stderr, "poll: %s\n", strerror(errno));
} else if (ret == 0) {
fprintf(stderr, "warning: timed out dumping pid %d\n", pid);
} else {
struct inotify_event ie;
read(ifd, &ie, sizeof(ie));
}
} else if (should_dump_native_traces(data)) {
/* dump native process if appropriate */
if (lseek(fd, 0, SEEK_END) < 0) {
fprintf(stderr, "lseek: %s\n", strerror(errno));
} else {
dump_backtrace_to_file(pid, fd);
}
}
}
if (dalvik_found == 0) {
fprintf(stderr, "Warning: no Dalvik processes found to dump stacks\n");
}
static char dump_traces_path[PATH_MAX];
strlcpy(dump_traces_path, traces_path, sizeof(dump_traces_path));
strlcat(dump_traces_path, ".bugreport", sizeof(dump_traces_path));
if (rename(traces_path, dump_traces_path)) {
fprintf(stderr, "rename(%s, %s): %s\n", traces_path, dump_traces_path, strerror(errno));
goto error_close_ifd;
}
result = dump_traces_path;
/* replace the saved [ANR] traces.txt file */
rename(anr_traces_path, traces_path);
error_close_ifd:
close(ifd);
error_close_fd:
close(fd);
return result;
}
bool SFWatchDog::threadLoop() {
XLOGV("[%s]", __func__);
{
Mutex::Autolock _l(mScreenLock);
}
nsecs_t stopTime = 1;
if (isSFThreadHang(&stopTime)) {
char cmds[256];
static uint32_t rtt_ct = SW_WATCHDOG_RTTCOUNT;
if (rtt_ct > 0) {
rtt_ct --;
} else {
XLOGD("[SF-WD] swap rtt dump file");
// swap rtt dump file
snprintf(cmds, sizeof(cmds), "mv %s.txt %s_1.txt", RTT_DUMP, RTT_DUMP);
system(cmds);
rtt_ct = SW_WATCHDOG_RTTCOUNT;
}
// append SurfaceFlinger rtt information to rtt file
char filename[100];
snprintf(filename, sizeof(filename), "%s.txt", RTT_DUMP);
int fd = open(filename, O_CREAT | O_WRONLY | O_NOFOLLOW, 0666); /* -rw-rw-rw- */
if (fd < 0) {
ALOGE("Can't open %s: %s\n", filename, strerror(errno));
return true;
}
if (lseek(fd, 0, SEEK_END) < 0) {
fprintf(stderr, "lseek: %s\n", strerror(errno));
} else {
dump_backtrace_to_file(getpid(), fd);
}
close(fd);
XLOGD("[SF-WD] dump rtt file: %s.txt", RTT_DUMP);
XLOGW("[SF-WD] ============================================");
} else {
stopTime = 1;
}
getProperty();
char value[PROPERTY_VALUE_MAX];
snprintf(value, sizeof(value), "%" PRId64 " ", stopTime);
if (stopTime < 0 || stopTime >= 2147483247) {
volatile nsecs_t tmpStopTime = stopTime;
XLOGD("[SF-WD] tmpStopTime=(%" PRId64 ", %" PRId64 ")", tmpStopTime, stopTime);
abort();
}
uint32_t ret = property_set("service.sf.status", value);
if (mUpdateCount) {
if (mShowLog)
XLOGV("[SF-WD] mUpdateCount: %d", mUpdateCount);
#if 0
aee_ioctl_wdt_kick(WDT_SETBY_SF);
#endif
mUpdateCount = 0;
}
//else {
// XLOGV("[SF-WD] mUpdateCount not update!!!!!: %d", mUpdateCount);
// aee_ioctl_wdt_kick(WDT_SETBY_SF_NEED_NOT_UPDATE);
//}
usleep(mTimer * 1000);
return true;
}