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author | nanbor <nanbor@ae88bc3d-4319-0410-8dbf-d08b4c9d3795> | 2001-06-13 15:53:28 +0000 |
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committer | nanbor <nanbor@ae88bc3d-4319-0410-8dbf-d08b4c9d3795> | 2001-06-13 15:53:28 +0000 |
commit | a4bb3db991853687be26c525a45ff73d2f51bd6c (patch) | |
tree | 5aff56fbeabdf9a8c1f2f0016c98c4ca05c0a9ee /ace/Obstack_T.cpp | |
parent | fe1d2d15e88a8aff5a684447f233b73121839f24 (diff) | |
download | ATCD-a4bb3db991853687be26c525a45ff73d2f51bd6c.tar.gz |
ChangeLogTag:Wed Jun 13 10:22:10 2001 Nanbor Wang <nanbor@cs.wustl.edu>
Diffstat (limited to 'ace/Obstack_T.cpp')
-rw-r--r-- | ace/Obstack_T.cpp | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/ace/Obstack_T.cpp b/ace/Obstack_T.cpp new file mode 100644 index 00000000000..d1fbd1ca946 --- /dev/null +++ b/ace/Obstack_T.cpp @@ -0,0 +1,165 @@ +// $Id$ + +#include "ace/Obstack_T.h" + +#if !defined (__ACE_INLINE__) +#include "ace/Obstack_T.i" +#endif /* __ACE_INLINE__ */ + +ACE_RCSID(ace, Obstack_T, "$Id$") + +ACE_ALLOC_HOOK_DEFINE(ACE_Obstack_T) + +template <class CHAR> void +ACE_Obstack_T<CHAR>::dump (void) const +{ + ACE_TRACE ("ACE_Obstack_T<CHAR>::dump"); + + ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this)); + ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("size_ = %d\n"), this->size_)); + ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("head_ = %x\n"), this->head_)); + ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("curr_ = %x\n"), this->curr_)); + ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP)); +} + +template <class CHAR> int +ACE_Obstack_T<CHAR>::request (size_t len) +{ + ACE_TRACE ("ACE_Obstack_T<CHAR>::request"); + + // normalize the length. + len *= sizeof (CHAR); + + // We will always have enough room for null terminating char + // unless sizeof (char) > 4. + // There's no way we can handle more than this->size_ of strings. + if (this->size_ < len) + return -1; + + // Check whether we need to grow our chunk... + if (this->curr_->cur_ + len >= this->curr_->end_) + { + ACE_Obchunk *temp = this->curr_; + if (this->curr_->next_ == 0) + { + // We must allocate new memory. + this->curr_->next_ = this->new_chunk (); + this->curr_ = this->curr_->next_; + } + else + { + // We can reuse previously allocated memory. + this->curr_ = this->curr_->next_; + this->curr_->block_ = this->curr_->cur_ = this->curr_->contents_; + } + + // if there are something in there already. + if (temp->cur_ != temp->block_) + { + // @@ Require pointer arithmatic? + size_t datasize = temp->cur_ - temp->block_; + + // Check the total length of data again. + if (this->size_ < len + datasize) + return -1; + + ACE_OS::memcpy (this->curr_->block_, + temp->block_, + datasize); + this->curr_->cur_ = this->curr_->block_ + datasize; + } + } + + return 0; +} + +template <class CHAR> CHAR * +ACE_Obstack_T<CHAR>::grow (CHAR c) +{ + ACE_TRACE ("ACE_Obstack_T<CHAR>::grow"); + + if (this->request (1) == 0) + { + CHAR *retv = ACE_reinterpret_cast (CHAR *, + this->curr_->cur_); + this->curr_->cur_ += sizeof (CHAR); + *retv = c; + return retv; + } + else + return 0; +} + +template <class CHAR> ACE_Obchunk * +ACE_Obstack_T<CHAR>::new_chunk (void) +{ + ACE_TRACE ("ACE_Obstack_T<CHAR>::new_chunk"); + + char *temp; + + ACE_ALLOCATOR_RETURN + (temp, + ACE_static_cast (char *, + this->allocator_strategy_->malloc + (sizeof (class ACE_Obchunk) + + this->size_)), + 0); + + return new (temp) ACE_Obchunk (this->size_); +} + +template <class CHAR> +ACE_Obstack_T<CHAR>::ACE_Obstack_T (size_t size, + ACE_Allocator *allocator_strategy) + : allocator_strategy_ (allocator_strategy), + size_ (size) +{ + ACE_TRACE ("ACE_Obstack_T<CHAR>::ACE_Obstack"); + + if (this->allocator_strategy_ == 0) + ACE_ALLOCATOR (this->allocator_strategy_, + ACE_Allocator::instance ()); + + this->head_ = this->new_chunk (); + this->curr_ = this->head_; +} + +template <class CHAR> +ACE_Obstack_T<CHAR>::~ACE_Obstack_T (void) +{ + ACE_TRACE ("ACE_Obstack_T<CHAR>::~ACE_Obstack"); + + ACE_Obchunk *temp = this->head_; + + while (temp != 0) + { + ACE_Obchunk *next = temp->next_; + temp->next_ = 0; + this->allocator_strategy_->free ((void *) temp); + temp = next; + } +} + +template <class CHAR> CHAR * +ACE_Obstack_T<CHAR>::copy (const CHAR *s, + size_t len) +{ + ACE_TRACE ("ACE_Obstack_T<CHAR>::copy"); + + if (this->request (len) != 0) + return 0; + + size_t tsize = len * sizeof (CHAR); + ACE_OS::memcpy (this->curr_->cur_, s, tsize); + this->curr_->cur_ += tsize ; + return this->freeze (); +} + +template <class CHAR> void +ACE_Obstack_T<CHAR>::release (void) +{ + ACE_TRACE ("ACE_Obstack_T<CHAR>::release"); + + this->curr_ = this->head_; + this->curr_->cur_ = this->curr_->contents_; +} |