diff options
Diffstat (limited to 'gold/descriptors.cc')
| -rw-r--r-- | gold/descriptors.cc | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/gold/descriptors.cc b/gold/descriptors.cc index 75a7a869c59..73c03bf4a45 100644 --- a/gold/descriptors.cc +++ b/gold/descriptors.cc @@ -115,7 +115,9 @@ Descriptors::open(int descriptor, const char* name, int flags, int mode) pod->inuse = true; pod->is_write = (flags & O_ACCMODE) != O_RDONLY; - ++this->current_; + if (!pod->is_claimed) + ++this->current_; + pod->is_claimed = false; if (this->current_ >= this->limit_) this->close_some_descriptor(); @@ -166,6 +168,24 @@ Descriptors::release(int descriptor, bool permanent) } } +// Claim the file descriptor DESCRIPTOR for a plugin. This effectively +// removes the descriptor from the pool of linker-managed descriptors, +// as the plugin will assume responsibility for closing it. +// The IS_CLAIMED flag allows us to recognize when a file descriptor +// has been reused after being closed by the plugin. + +void +Descriptors::claim_for_plugin(int descriptor) +{ + Hold_lock hl(*this->lock_); + + gold_assert(descriptor >= 0 + && (static_cast<size_t>(descriptor) + < this->open_descriptors_.size())); + Open_descriptor* pod = &this->open_descriptors_[descriptor]; + pod->is_claimed = true; +} + // Close some descriptor. The lock is held when this is called. We // close the descriptor on the top of the free stack. Note that this // is the opposite of an LRU algorithm--we close the most recently |