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Implement memory-mapped IO for Sinks

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silvanshade 2025-03-18 14:22:15 -06:00
parent a87c3711b6
commit b1783ff615
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4 changed files with 20 additions and 4 deletions
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19
src/libutil/file-system.cc
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@ -21,6 +21,8 @@
#include <sys/time.h>
#include <unistd.h>
#include <boost/iostreams/device/mapped_file.hpp>
#ifdef _WIN32
# include <io.h>
#endif
@ -273,9 +275,22 @@ std::string readFile(const std::filesystem::path & path)
return readFile(os_string_to_string(PathViewNG { path }));
}
void readFile(const Path & path, Sink & sink)
void readFile(const Path & path, Sink & sink, bool memory_map)
{
// Memory-map the file for faster processing where possible.
if (memory_map) {
try {
boost::iostreams::mapped_file_source mmap(path);
if (mmap.is_open()) {
sink({mmap.data(), mmap.size()});
return;
}
} catch (const boost::exception & e) {
}
debug("memory-mapping failed for path: %s", path);
}
// Stream the file instead if memory-mapping fails or is disabled.
AutoCloseFD fd = toDescriptor(open(path.c_str(), O_RDONLY
// TODO
#ifndef _WIN32