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Pre-allocate block and undo files in chunks

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Introduce a AllocateFileRange() function in util, which wipes or
at least allocates a given range of a file. It can be overriden
by more efficient OS-dependent versions if necessary.

Block and undo files are now allocated in chunks of 16 and 1 MiB,
respectively.
This commit is contained in:
Pieter Wuille
2012-08-16 02:21:28 +02:00
parent 5382bcf8cd
commit bba89aa82a
4 changed files with 49 additions and 9 deletions
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src/util.h
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@@ -196,6 +196,7 @@ bool WildcardMatch(const char* psz, const char* mask);
bool WildcardMatch(const std::string& str, const std::string& mask);
void FileCommit(FILE *fileout);
int GetFilesize(FILE* file);
void AllocateFileRange(FILE *file, unsigned int offset, unsigned int length);
bool RenameOver(boost::filesystem::path src, boost::filesystem::path dest);
boost::filesystem::path GetDefaultDataDir();
const boost::filesystem::path &GetDataDir(bool fNetSpecific = true);