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Improve performance when reading directories

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This commit is contained in:
Maschell 2024-03-24 11:07:30 +01:00
parent bfc82df26f
commit d566a7155e
1 changed files with 83 additions and 31 deletions
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56
source/ftpSession.cpp
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@ -37,6 +37,9 @@
#include <cerrno>
#include <chrono>
#include <cinttypes>
#ifdef __WIIU__
#include <coreinit/filesystem_fsa.h>
#endif
#include <cstdarg>
#include <cstring>
#include <ctime>
@ -1634,6 +1637,44 @@ void FtpSession::sendResponse (std::string_view const response_)
m_responseBuffer.markUsed (response_.size ());
}
#ifdef __WIIU__
#ifndef FSA_DIRITER_MAGIC
#define FSA_DIRITER_MAGIC 0x77696975
#endif
// TODO: make this less hacky. Ideally this should be handled by newlib.
typedef struct
{
uint32_t magic;
FSADirectoryHandle fd;
FSADirectoryEntry entry_data;
// Some fields are missing here!!!!
} __wut_fsa_dir_incomplete_t;
extern "C" void __wut_fsa_translate_stat (FSAClientHandle clientHandle,
FSStat *fsStat,
ino_t ino,
struct stat *posStat);
static bool __wut_fsa_get_stat_from_dir (DIR *dp, struct stat *posStat)
{
if (dp == NULL || dp->dirData == NULL || dp->dirData->dirStruct == NULL || posStat == NULL)
{
return false;
}
auto const magic = *(uint32_t *)(dp->dirData->dirStruct);
if (magic == FSA_DIRITER_MAGIC)
{
__wut_fsa_dir_incomplete_t *dir = (__wut_fsa_dir_incomplete_t *)dp->dirData->dirStruct;
__wut_fsa_translate_stat (0, &dir->entry_data.info, 0, posStat);
return true;
}
return false;
}
#endif
bool FtpSession::listTransfer ()
{
// check if we sent all available data
@ -1690,8 +1731,15 @@ bool FtpSession::listTransfer ()
// build the path
auto const fullPath = buildPath (m_lwd, dent->d_name);
struct stat st = {};
#ifdef __3DS__
#ifdef __WIIU__
auto const dp = static_cast<DIR *> (m_dir);
if (__wut_fsa_get_stat_from_dir (dp, &st))
{
// success!
}
else
{ // fallback to lstat
#elifdef __3DS__
// the sdmc directory entry already has the type and size, so no need to do a slow stat
auto const dp = static_cast<DIR *> (m_dir);
auto const magic = *reinterpret_cast<u32 *> (dp->dirData->dirStruct);
@ -1738,6 +1786,7 @@ bool FtpSession::listTransfer ()
}
}
else
{
#endif
// lstat the entry
if (IOAbstraction::lstat (fullPath.c_str (), &st) != 0)
@ -1783,6 +1832,9 @@ bool FtpSession::listTransfer ()
}
#endif
}
#if defined(__WIIU__) || defined(__3DS__)
}
#endif
auto const path = encodePath (dent->d_name);
auto const rc = fillDirent (st, path);