“build hikey960 error”的版本间的差异

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<source lang="c">
 
<source lang="c">
  
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ScopedFlock LockedFile::DupOf(const int fd, const std::string& path,
+
ScopedFlock LockedFile::Open(const char* filename, int flags, bool block,
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                              const bool read_only_mode, std::string* error_msg) {
+
                                          std::string* error_msg) {
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   // NOTE: We don't check usage here because the ScopedFlock should *never* be
+
   while (true) {
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  // responsible for flushing its underlying FD. Its only purpose should be
+
    std::unique_ptr<File> file(OS::OpenFileWithFlags(filename, flags, /* auto_flush= */ false));
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  // to acquire a lock, and the unlock / close in the corresponding
+
    if (file.get() == nullptr) {
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  // destructor. Callers should explicitly flush files they're writing to if
+
      *error_msg = StringPrintf("Failed to open file '%s': %s", filename, strerror(errno));
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  // that is the desired behaviour.
+
      return nullptr;
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  ScopedFlock locked_file(
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     }
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      new LockedFile(DupCloexec(fd), path, /* check_usage= */ false, read_only_mode));
+
−
  if (locked_file->Fd() == -1) {
+
−
    *error_msg = StringPrintf("Failed to duplicate open file '%s': %s",
+
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                              locked_file->GetPath().c_str(), strerror(errno));
+
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    return nullptr;
+
−
  }
+
−
  if (0 != TEMP_FAILURE_RETRY(flock(locked_file->Fd(), LOCK_EX))) {
+
−
     *error_msg = StringPrintf(
+
−
        "Ignore: Failed to lock file '%s': %s", locked_file->GetPath().c_str(), strerror(errno));
+
−
    return nullptr;
+
−
  }
+
−
 
+
−
  return locked_file;
+
−
+
−
}
+
  
 +
    int operation = block ? LOCK_EX : (LOCK_EX | LOCK_NB);
 +
    int flock_result = TEMP_FAILURE_RETRY(flock(file->Fd(), operation));
 +
    if (flock_result == EWOULDBLOCK) {
 +
      // File is locked by someone else and we are required not to block;
 +
      return nullptr;
 +
    }
 +
    if (flock_result != 0) {
 +
      *error_msg = StringPrintf("Failed to lock file '%s': %s", filename, strerror(errno));
 +
      return nullptr; <== Remark this line
 +
    }
 
</source>
 
</source>

2019年10月13日 (日) 14:02的最后版本

Host:Linux 4.4.0-142-generic #168-Ubuntu x86_64 x86_64 x86_64 GNU/Linux

Log: 

dex2oatd E 09-23 23:04:07 174391 174391 dex2oat.cc:2234] Cannot lock profiles: Failed to lock file 'out/soong/hikey960/dex_bootjars/boot.prof': Bad file descriptor
dex2oatd E 09-23 23:04:07 174391 174391 dex2oat.cc:2842] Failed to process profile file ERROR: Dex2oat failed to compile a boot image.It is likely that the boot classpath is inconsistent.Rebuild with ART_BOOT_IMAGE_EXTRA_ARGS="--runtime-arg -verbose:verifier" to see verification errors.

Cause:
art/dex2oat/dex2oat.cc 

bool LoadProfile() {
    ..
    if (profile_file_fd_ != -1) {
        profile_file = LockedFile::DupOf(profile_file_fd_, "profile", true /* read_only_mode */, &error);
    } else if (profile_file_ != "") {
        profile_file = LockedFile::Open(profile_file_.c_str(), O_RDONLY, true, &error);
    }
    // Return early if we're unable to obtain a lock on the profile.
    if (profile_file.get() == nullptr) {
        LOG(ERROR) << "Cannot lock profiles: " << error;
        return false;
    }
}

art/libartbase/base/scoped_flock.cc 

ScopedFlock LockedFile::Open(const char* filename, int flags, bool block,
                                          std::string* error_msg) {
  while (true) {
    std::unique_ptr<File> file(OS::OpenFileWithFlags(filename, flags, /* auto_flush= */ false));
    if (file.get() == nullptr) {
      *error_msg = StringPrintf("Failed to open file '%s': %s", filename, strerror(errno));
      return nullptr;
    }
 
    int operation = block ? LOCK_EX : (LOCK_EX | LOCK_NB);
    int flock_result = TEMP_FAILURE_RETRY(flock(file->Fd(), operation));
    if (flock_result == EWOULDBLOCK) {
      // File is locked by someone else and we are required not to block;
      return nullptr;
    }
    if (flock_result != 0) {
      *error_msg = StringPrintf("Failed to lock file '%s': %s", filename, strerror(errno));
      return nullptr; <== Remark this line
    }
来自“https://www.mywiki.cn/free6d1823/index.php?title=build_hikey960_error&oldid=42432”