boost/interprocess
2
0
Fork 0
mirror of https://github.com/boostorg/interprocess.git synced 2026-01-24 05:52:16 +00:00
Code Issues Projects Releases Wiki Activity

Merge from trunk for 1.46

Browse Source 
[SVN r68072]
This commit is contained in:
Ion Gaztañaga
2011-01-12 22:23:09 +00:00
parent 64db00dc3d
commit ab7e04d7f8
19 changed files with 1031 additions and 255 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
example/doc_file_mapping.cpp
View File

@@ -25,49 +25,43 @@
int main(int argc, char *argv[])
{
using namespace boost::interprocess;
//Define file names
//<-
#if 1
std::string file_name(boost::interprocess::detail::get_temporary_path());
file_name += "/"; file_name += test::get_process_id_name();
const char *FileName = file_name.c_str();
#else
//->
const char *FileName = "file.bin";
//<-
#endif
//->
const std::size_t FileSize = 10000;
if(argc == 1){ //Parent process executes this
{ //Create a file
file_mapping::remove(FileName);
std::filebuf fbuf;
//<-
#if 1
fbuf.open(test::get_process_id_name(), std::ios_base::in | std::ios_base::out
fbuf.open(FileName, std::ios_base::in | std::ios_base::out
| std::ios_base::trunc | std::ios_base::binary);
#else
//->
fbuf.open("file.bin", std::ios_base::in | std::ios_base::out
| std::ios_base::trunc | std::ios_base::binary);
//<-
#endif
//->
//Set the size
fbuf.pubseekoff(FileSize-1, std::ios_base::beg);
fbuf.sputc(0);
}
//Remove file on exit
//Remove on exit
struct file_remove
{
//<-
#if 1
~file_remove (){ file_mapping::remove(test::get_process_id_name()); }
#else
//->
~file_remove (){ file_mapping::remove("file.bin"); }
//<-
#endif
//->
} destroy_on_exit;
file_remove(const char *FileName)
: FileName_(FileName) {}
~file_remove(){ file_mapping::remove(FileName_); }
const char *FileName_;
} remover(FileName);
//Create a file mapping
//<-
#if 1
file_mapping m_file(test::get_process_id_name(), read_write);
#else
//->
file_mapping m_file("file.bin", read_write);
//<-
#endif
//->
file_mapping m_file(FileName, read_write);
//Map the whole file with read-write permissions in this process
mapped_region region(m_file, read_write);
@@ -82,7 +76,7 @@ int main(int argc, char *argv[])
//Launch child process
std::string s(argv[0]); s += " child ";
//<-
s += test::get_process_id_name();
s += "\""; s+= FileName; s += "\"";
//->
if(0 != std::system(s.c_str()))
return 1;
@@ -94,7 +88,7 @@ int main(int argc, char *argv[])
file_mapping m_file(argv[2], read_only);
#else
//->
file_mapping m_file("file.bin", read_only);
file_mapping m_file(FileName, read_only);
//<-
#endif
//->
@@ -118,7 +112,7 @@ int main(int argc, char *argv[])
fbuf.open(argv[2], std::ios_base::in | std::ios_base::binary);
#else
//->
fbuf.open("file.bin", std::ios_base::in | std::ios_base::binary);
fbuf.open(FileName, std::ios_base::in | std::ios_base::binary);
//<-
#endif
//->