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avoid using stat calls if possible (reusing cached data if needed)

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3308
This commit is contained in:
Sebastian Strohhäcker 2009-02-24 17:56:55 +00:00
parent 9725773407
commit ad13c63c32
2 changed files with 25 additions and 17 deletions
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20
include/dos_system.h
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: dos_system.h,v 1.44 2009-02-20 14:19:43 c2woody Exp $ */
/* $Id: dos_system.h,v 1.45 2009-02-24 17:56:55 c2woody Exp $ */
#ifndef DOSBOX_DOS_SYSTEM_H
#define DOSBOX_DOS_SYSTEM_H
@ -105,12 +105,12 @@ public:
open=true;
return *this;
}
DOS_Device():DOS_File(),devnum(0){};
DOS_Device():DOS_File(),devnum(0){};
virtual bool Read(Bit8u * data,Bit16u * size);
virtual bool Write(Bit8u * data,Bit16u * size);
virtual bool Seek(Bit32u * pos,Bit32u type);
virtual bool Close();
virtual Bit16u GetInformation(void);
virtual Bit16u GetInformation(void);
virtual bool ReadFromControlChannel(PhysPt bufptr,Bit16u size,Bit16u * retcode);
virtual bool WriteToControlChannel(PhysPt bufptr,Bit16u size,Bit16u * retcode);
void SetDeviceNumber(Bitu num) { devnum=num;}
@ -118,7 +118,7 @@ private:
Bitu devnum;
};
/* The following variable can be lowered to free up some memory.
/* The following variable can be lowered to free up some memory.
* The negative side effect: The stored searches will be turned over faster.
* Should not have impact on systems with few directory entries. */
#define MAX_OPENDIRS 2048
@ -140,7 +140,7 @@ public:
void ExpandName (char* path);
char* GetExpandName (const char* path);
bool GetShortName (const char* fullname, char* shortname);
bool FindFirst (char* path, Bitu& id);
bool FindNext (Bitu id, char* &result);
@ -153,7 +153,7 @@ public:
char* GetLabel (void) { return label; };
class CFileInfo {
public:
public:
CFileInfo(void) {
orgname[0] = shortname[0] = 0;
nextEntry = shortNr = 0;
@ -186,7 +186,7 @@ private:
CFileInfo* FindDirInfo (const char* path, char* expandedPath);
bool RemoveSpaces (char* str);
bool OpenDir (CFileInfo* dir, const char* path, Bit16u& id);
void CreateEntry (CFileInfo* dir, const char* name);
void CreateEntry (CFileInfo* dir, const char* name, Bitu query_directory);
Bit16u GetFreeID (CFileInfo* dir);
void Clear (void);
@ -241,7 +241,7 @@ public:
virtual char const * GetLabel(){return dirCache.GetLabel();};
DOS_Drive_Cache dirCache;
// disk cycling functionality (request resources)
virtual void Activate(void) {};
};
@ -251,8 +251,8 @@ enum { DOS_SEEK_SET=0,DOS_SEEK_CUR=1,DOS_SEEK_END=2};
/*
A multiplex handler should read the registers to check what function is being called
If the handler returns false dos will stop checking other handlers
A multiplex handler should read the registers to check what function is being called
If the handler returns false dos will stop checking other handlers
*/
typedef bool (MultiplexHandler)(void);