C++ Library containing a lot of needful things: Stack Trace, Command Line Parser, Resource Handling, Configuration Files, Unix Command Execution, Directories, Regular Expressions, Tokenizer, Function Trace, Standard Extensions.
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31 lines
924 B
31 lines
924 B
#include <mrw/auto.hpp> |
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#include <unistd.h> // close |
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#include <sys/stat.h> // fstat |
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#include <sys/mman.h> // mmap |
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namespace mrw { |
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//---------------------------------------------------------------------------- |
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AutoFile& AutoFile::reset(int fd) throw() { |
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if (_fd!=-1) close(_fd); |
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_fd = fd; |
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return *this; |
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} |
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//---------------------------------------------------------------------------- |
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AutoMapper::AutoMapper(int fd, size_t sz, void* addr, |
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int prot, int flags, off_t off) throw() { |
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if (!(_sz=sz)) { |
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struct stat st; |
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if (fd==-1 || fstat(fd, &st)==-1) {release(); return;} |
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_sz = st.st_size; |
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} |
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if ((_cont=mmap(addr, _sz, prot, flags, fd, off))==MAP_FAILED) release(); |
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} |
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//---------------------------------------------------------------------------- |
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AutoMapper::~AutoMapper() throw() { |
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if (_cont && _sz) munmap(_cont, _sz); |
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} |
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}
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