#include <POSIX_Asynch_IO.h>
Inheritance diagram for ACE_POSIX_Asynch_Transmit_File:
Public Member Functions | |
| ACE_POSIX_Asynch_Transmit_File (ACE_POSIX_Proactor *posix_proactor) | |
| Constructor. | |
| int | transmit_file (ACE_HANDLE file, ACE_Asynch_Transmit_File::Header_And_Trailer *header_and_trailer, size_t bytes_to_write, u_long offset, u_long offset_high, size_t bytes_per_send, u_long flags, const void *act, int priority, int signal_number=0) |
| virtual | ~ACE_POSIX_Asynch_Transmit_File (void) |
| Destructor. | |
Definition at line 1007 of file POSIX_Asynch_IO.h.
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Constructor.
Definition at line 2056 of file POSIX_Asynch_IO.cpp.
02057 : ACE_POSIX_Asynch_Operation (posix_proactor) 02058 { 02059 } |
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Destructor.
Definition at line 2133 of file POSIX_Asynch_IO.cpp.
02134 {
02135 }
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This starts off an asynchronous transmit file. The is a handle to an open file. is a pointer to a data structure that contains pointers to data to send before and after the file data is sent. Set this parameter to 0 if you only want to transmit the file data. Upto will be written to the . If you want to send the entire file, let = 0. is the size of each block of data sent per send operation. Please read the POSIX documentation on what the flags should be. Implements ACE_Asynch_Transmit_File_Impl. Definition at line 2062 of file POSIX_Asynch_IO.cpp. References ACE_ERROR_RETURN, ACE_NEW_RETURN, ACE_OS::filesize(), LM_ERROR, and ssize_t.
02072 {
02073 // Adjust these parameters if there are default values specified.
02074 ssize_t file_size = ACE_OS::filesize (file);
02075
02076 if (file_size == -1)
02077 ACE_ERROR_RETURN ((LM_ERROR,
02078 "Error:%N:%l:%p\n",
02079 "POSIX_Asynch_Transmit_File:filesize failed"),
02080 -1);
02081
02082 if (bytes_to_write == 0)
02083 bytes_to_write = file_size;
02084
02085 if (offset > (size_t) file_size)
02086 ACE_ERROR_RETURN ((LM_ERROR,
02087 "Error:%p\n",
02088 "Asynch_Transmit_File:File size is less than offset"),
02089 -1);
02090
02091 if (offset != 0)
02092 bytes_to_write = file_size - offset + 1;
02093
02094 if (bytes_per_send == 0)
02095 bytes_per_send = bytes_to_write;
02096
02097 // Configure the result parameter.
02098 ACE_POSIX_Asynch_Transmit_File_Result *result = 0;
02099
02100 ACE_NEW_RETURN (result,
02101 ACE_POSIX_Asynch_Transmit_File_Result (this->handler_proxy_,
02102 this->handle_,
02103 file,
02104 header_and_trailer,
02105 bytes_to_write,
02106 offset,
02107 offset_high,
02108 bytes_per_send,
02109 flags,
02110 act,
02111 this->posix_proactor ()->get_handle (),
02112 priority,
02113 signal_number),
02114 -1);
02115
02116 // Make the auxillary handler and initiate transmit.
02117 ACE_POSIX_Asynch_Transmit_Handler *transmit_handler = 0;
02118
02119 ACE_NEW_RETURN (transmit_handler,
02120 ACE_POSIX_Asynch_Transmit_Handler (this->posix_proactor (),
02121 result),
02122 -1);
02123
02124 ssize_t return_val = transmit_handler->transmit ();
02125
02126 if (return_val == -1)
02127 // This deletes the <result> in it too.
02128 delete transmit_handler;
02129
02130 return 0;
02131 }
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1.3.6