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Improve performance of File::GetSize().

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This commit is contained in:
Unknown W. Brackets 2013-07-28 13:16:03 -07:00
parent 55ed8d648b
commit a9e7a9ce3d
1 changed files with 14 additions and 13 deletions
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27
Common/FileUtil.cpp
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@ -107,6 +107,12 @@ bool Exists(const std::string &filename)
return (result == 0);
}
// Returns true if stat represents a directory
bool IsDirectory(const struct stat64 &file_info)
{
return S_ISDIR(file_info.st_mode);
}
// Returns true if filename is a directory
bool IsDirectory(const std::string &filename)
{
@ -123,7 +129,7 @@ bool IsDirectory(const std::string &filename)
return false;
}
return S_ISDIR(file_info.st_mode);
return IsDirectory(file_info);
}
// Deletes a given filename, return true on success
@ -390,28 +396,23 @@ tm GetModifTime(const std::string &filename)
// Returns the size of filename (64bit)
u64 GetSize(const std::string &filename)
{
if (!Exists(filename))
struct stat64 file_info;
int result = stat64(filename.c_str(), &file_info);
if (result != 0)
{
WARN_LOG(COMMON, "GetSize: failed %s: No such file", filename.c_str());
return 0;
}
if (IsDirectory(filename))
if (IsDirectory(file_info))
{
WARN_LOG(COMMON, "GetSize: failed %s: is a directory", filename.c_str());
return 0;
}
struct stat64 buf;
if (stat64(filename.c_str(), &buf) == 0)
{
DEBUG_LOG(COMMON, "GetSize: %s: %lld",
filename.c_str(), (long long)buf.st_size);
return buf.st_size;
}
ERROR_LOG(COMMON, "GetSize: Stat failed %s: %s",
filename.c_str(), GetLastErrorMsg());
return 0;
DEBUG_LOG(COMMON, "GetSize: %s: %lld", filename.c_str(), (long long)file_info.st_size);
return file_info.st_size;
}
// Overloaded GetSize, accepts file descriptor