diff options
Diffstat (limited to 'examples/Web_Crawler/Mem_Map_Stream.cpp')
| -rw-r--r-- | examples/Web_Crawler/Mem_Map_Stream.cpp | 240 |
1 files changed, 0 insertions, 240 deletions
diff --git a/examples/Web_Crawler/Mem_Map_Stream.cpp b/examples/Web_Crawler/Mem_Map_Stream.cpp deleted file mode 100644 index dda1d465a71..00000000000 --- a/examples/Web_Crawler/Mem_Map_Stream.cpp +++ /dev/null @@ -1,240 +0,0 @@ -// $Id$ - -#include "ace/FILE_Addr.h" -#include "ace/Auto_Ptr.h" -#include "Options.h" -#include "Mem_Map_Stream.h" - -ACE_RCSID(Web_Crawler, Mem_Map_Stream, "$Id$") - -ACE_SOCK_Stream & -Mem_Map_Stream::stream (void) -{ - return svc_handler_->peer (); -} - -ssize_t -Mem_Map_Stream::send_n (const void *buf, size_t size, ACE_Time_Value *tv) -{ - return svc_handler_->peer ().send_n (buf, size, 0, tv); -} - -int -Mem_Map_Stream::eof (void) const -{ - return this->get_pos_ >= this->end_of_mapping_plus1_; -} - -int -Mem_Map_Stream::get_char (void) -{ - if (this->eof () && this->grow_file_and_remap () == -1) - return EOF; - - return *this->get_pos_++; -} - -int -Mem_Map_Stream::rewind (void) -{ - this->recv_pos_ = - reinterpret_cast<char *> (this->mem_map_.addr ()); - this->get_pos_ = this->recv_pos_; - this->end_of_mapping_plus1_ = - this->recv_pos_ + this->mem_map_.size (); - return 0; -} - -int -Mem_Map_Stream::peek_char (size_t offset) -{ - // We may need to iterate if the size of <n> is large. - while (this->get_pos_ + offset >= this->end_of_mapping_plus1_) - if (this->grow_file_and_remap () == -1) - return EOF; - - return this->get_pos_[offset]; -} - -const char * -Mem_Map_Stream::recv (void) const -{ - return this->recv_pos_; -} - -const char * -Mem_Map_Stream::recv (size_t &len) -{ - if (this->eof () && this->grow_file_and_remap () == -1) - return 0; - - - const char *s = this->recv_pos_; - off_t olen = static_cast <off_t> (len); - this->seek (olen, SEEK_CUR); - len = this->get_pos_ - s; - return s; -} - -size_t -Mem_Map_Stream::recv_len (void) const -{ - return this->get_pos_ - this->recv_pos_; -} - -const char * -Mem_Map_Stream::peek_str (size_t offset, - size_t size) -{ - // We will iterate if the size of <offset> is large. - while (this->get_pos_ + (offset + size) > this->end_of_mapping_plus1_) - if (this->grow_file_and_remap () == -1) - return 0; - - return &this->get_pos_[offset]; -} - -off_t -Mem_Map_Stream::seek (off_t offset, int whence) -{ - switch (whence) - { - case SEEK_SET: - this->get_pos_ = - reinterpret_cast<char *> (this->mem_map_.addr ()) - + offset; - break; - - case SEEK_CUR: - this->get_pos_ += offset; - break; - - case SEEK_END: - this->get_pos_ = - this->end_of_mapping_plus1_ + offset; - // @@ Not sure how to implement this (yet). - ACE_NOTSUP_RETURN (-1); - break; - } - - // Make sure that the backing store will cover this. - while (this->get_pos_ > this->end_of_mapping_plus1_) - if (this->grow_file_and_remap () == -1) - return (off_t) -1; - - this->recv_pos_ = this->get_pos_; - return this->recv_pos_ - reinterpret_cast<char *> (this->mem_map_.addr ()); -} - -Mem_Map_Stream::Svc_Handler * -Mem_Map_Stream::svc_handler (void) -{ - return this->svc_handler_; -} - - -int -Mem_Map_Stream::open (STRAT_CONNECTOR *connector, - const ACE_INET_Addr &addr) -{ - svc_handler_ = 0; - - // Connect to the server at <addr>. If the handler has to be - // connected to the server again, the Caching strategy takes care - // and uses the same connection. - if (connector->connect (svc_handler_, - addr) == -1) - { - - ACE_ERROR_RETURN ((LM_ERROR, - "%p %s %d\n", - "Connect failed", - addr.get_host_name (), - addr.get_port_number ()), - -1); - } - // Create a temporary filename. - ACE_FILE_Addr file (ACE_sap_any_cast (ACE_FILE_Addr &)); - - // Create the temporary file via the <ACE_Mem_Map> class API. - if (this->mem_map_.open (file.get_path_name (), - O_RDWR | O_CREAT | O_APPEND, - ACE_DEFAULT_FILE_PERMS) == -1) - ACE_ERROR_RETURN ((LM_ERROR, - "%p\n", - "open"), - -1); - // Make sure to unlink this right away so that if this process - // crashes these files will be removed automatically. -#if 0 - else if (ACE_OS::unlink (file.get_path_name ()) == -1) - ACE_ERROR_RETURN ((LM_ERROR, - "%p\n", - "unlink"), - -1); - else -#endif - // Initialize all the position pointers to 0. - this->rewind (); - - return 0; -} - -int -Mem_Map_Stream::grow_file_and_remap (void) -{ - char buf[BUFSIZ + 1]; - - // Copy the next chunk of bytes from the socket into the temporary - // file. - ACE_Time_Value tv (*OPTIONS::instance ()->timeout ()); - - ssize_t n = this->svc_handler_->peer ().recv_n (buf, - sizeof buf, - 0, - &tv); - if (n == -1) - { - if (OPTIONS::instance ()->debug ()) - ACE_ERROR ((LM_ERROR, - "%p\n", - "recv")); - return -1; - } - else if (n == 0) - return -1; - else if (ACE::write_n (this->mem_map_.handle (), buf, n) != n) - ACE_ERROR_RETURN ((LM_ERROR, - "%p\n", - "write_n"), - -1); - - // Grow the memory-mapping to encompass the entire temporary file. - if (this->mem_map_.map (-1, - PROT_RDWR, - ACE_MAP_PRIVATE | ACE_MAP_FIXED, - ACE_DEFAULT_BASE_ADDR) == -1) - ACE_ERROR_RETURN ((LM_ERROR, - "%p\n", - "map"), - -1); - // MAP_FAILED is used as a "first time in" flag. - if (this->recv_pos_ == MAP_FAILED) - { - this->recv_pos_ = reinterpret_cast<char *> (this->mem_map_.addr ()); - this->get_pos_ = this->recv_pos_; - } - - this->end_of_mapping_plus1_ = - reinterpret_cast<char *> (this->mem_map_.addr ()) - + this->mem_map_.size (); - - return 0; -} - -Mem_Map_Stream::~Mem_Map_Stream (void) -{ - // Remove the mapping and the file. - this->mem_map_.remove (); -} - |