Xbox-Never-Sleeps dilema
This commit is contained in:
Aaron Robinson
parent
c2358afe6b
commit
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@ -7,7 +7,12 @@ version: 0.7.3 (06/18/03)
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- Indexed [primitive/vertex] rendering
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- Texture fixes (some users couldn't see them!)
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- Fixed *part* of the invisible texture problem
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- Technique for solving the Xbox-Never-Sleeps CPU
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hogging dilema. This feature is not implemented
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in the release, though, as it will be more harm
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than good until configuration is available.
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version: 0.7.2 (06/13/03)
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--------------------------------
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53
Doc/Todo.txt
53
Doc/Todo.txt
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@ -1,4 +1,9 @@
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Cxbx Todo (* denotes high priority)
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Cxbx Todo (* denotes high priority, + denotes medium priority)
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* As a solution to the Xbox-Never-Sleeps problem, EmuSwapFS can increment
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and check a global variable, and Sleep(1) after N number of function
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interceptions. This could be included in the core configuration options.
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Be careful that these sleeps dont take place inside of a critical section.
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* Perhaps for global variable detection, have some sort of array of
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function + offset pairs to check. That way if an Xbe happens to not
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@ -7,13 +12,9 @@ Cxbx Todo (* denotes high priority)
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should be set to NULL, and any references to it should not assume it
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will not be NULL.
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* When in critical section, do not print debug trace?
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* Functions like GetRenderTarget need to return a special temporary
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X_D3DSurface that will somehow be cleaned up along with the "real"
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X_D3DSurface pointer. Perhaps maintain a cache of all the current
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temporary buffers, and whenever a resource has it's final Release(),
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go through and check if any other handles reference that resource.
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* Special temporarily X_D3DResource handles need to be kept track of and
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periodically garbage collected. Garbage collection frequency can be a
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core configuration option.
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* Register() probably needn't re-unswizzle each time. cache a copy of
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the address it was registered to (or a global table) and simply update
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@ -24,40 +25,40 @@ Cxbx Todo (* denotes high priority)
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* GetDisplayMode / GetAdapterDisplayMode should not return real display
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mode when windowed!
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* Stabilize Heap Allocation (i.e. operator new) -> Crashes after initial commit is full
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* The notorious Heap Allocation crash still needs to be solved on a low
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level. It is strongly preferable to debug this instead of having to
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intercept the entire Rtl heap set of functions.
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* Stabilize TLS (it's close...)
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What does SetLastError check Irql for? Should this be emulated?
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+ Closing a console should not terminate the entire process.
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Perfect the timing on KeTickCount
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+ Perfect the timing on KeTickCount. This could be updated periodically,
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similar to the Xbox-Never-Sleeps problem.
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Some sort of delete-after-emulation type of functionality?
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+ Some sort of delete-after-emulation type of functionality?
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Use SetDataFormat instead of parsing device input by hand?
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+ Use SetDataFormat instead of parsing device input by hand?
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Batch config all buttons (should be very easy..just click one by one)
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+ Batch config all buttons (should be very easy..just click one by one)
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Encapsulate RecentFiles into a nice little class
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+ Configuration screens may not necessarily need to be modal windows.
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Configuration screens may not necessarily need to be modal windows.
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Closing a console should not terminate the entire process.
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If possible, Direct3D Rendering window should inherit from Wnd.
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Xbe file associations via user configuration. This could include an
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+ Xbe file associations via user configuration. This could include an
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option to either automatically execute the Xbe, or simply open it up
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in Cxbx's main window. For this purpose, Cxbx.dll should also be
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registered in the system so that a converted Exe can run from anywhere.
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Converted Exe files should use the Cxbx icon
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Allow a logo bitmap to be added if one does not exist. This may require that
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the size of headers be increased. (sizeof_headers).
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When loading a file, menus and WM_CLOSE should be disabled and an update
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progress should be sent via callback from core.
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Xbe::m_Header should be allocated dynamically to make room for huge headers.
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Encapsulate RecentFiles into a nice little class
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If possible, Direct3D Rendering window should inherit from Wnd.
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Allow a logo bitmap to be added if one does not exist. This may require that
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the size of headers be increased. (sizeof_headers).
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Xbe::m_Header should be allocated dynamically to make room for huge headers.
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@ -39,24 +39,23 @@
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// word @ FS:[0x14] := wSwapFS
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// byte @ FS:[0x16] := bIsXboxFS
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#undef FIELD_OFFSET // prevent macro redefinition warnings
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#include <windows.h>
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// ******************************************************************
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// * func: EmuSwapFS
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// * func: EmuGenerateFS
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// ******************************************************************
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// *
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// * This function is used to swap between the native Win2k/XP FS:
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// * structure, and the Emu FS: structure. Before running Windows
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// * code, you *must* swap over to Win2k/XP FS. Similarly, before
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// * running Xbox code, you *must* swap back over to Emu FS.
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// *
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extern void EmuGenerateFS(Xbe::TLS *pTLS, void *pTLSData);
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// ******************************************************************
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static inline void EmuSwapFS()
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{
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__asm
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{
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mov ax, fs:[0x14]
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mov fs, ax
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}
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}
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// * func: EmuCleanupFS
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// ******************************************************************
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extern void EmuCleanupFS();
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// ******************************************************************
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// * func: EmuInitFS
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// ******************************************************************
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extern void EmuInitFS();
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// ******************************************************************
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// * func: EmuIsXboxFS
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@ -81,18 +80,62 @@ static inline bool EmuIsXboxFS()
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}
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// ******************************************************************
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// * func: EmuGenerateFS
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// * data: EmuAutoSleepRate
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// ******************************************************************
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extern void EmuGenerateFS(Xbe::TLS *pTLS, void *pTLSData);
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// *
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// * Xbox is a single process system, and because of this fact, demos
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// * and games are likely to suffer from Xbox-Never-Sleeps syndrome.
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// *
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// * Basically, there are situations where the Xbe will have no
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// * reason to bother yielding to other threads. One solution to this
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// * problem is to keep track of the number of function intercepts,
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// * and every so often, force a sleep. This is the rate at which
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// * those forced sleeps occur.
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// *
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// ******************************************************************
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extern uint32 EmuAutoSleepRate;
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// ******************************************************************
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// * func: EmuCleanupFS
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// * func: EmuSwapFS
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// ******************************************************************
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extern void EmuCleanupFS();
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// *
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// * This function is used to swap between the native Win2k/XP FS:
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// * structure, and the Emu FS: structure. Before running Windows
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// * code, you *must* swap over to Win2k/XP FS. Similarly, before
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// * running Xbox code, you *must* swap back over to Emu FS.
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// *
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// ******************************************************************
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static inline void EmuSwapFS()
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{
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// Note that this is only the *approximate* interception count,
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// because not all interceptions swap the FS register, and some
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// non-interception code uses it
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static uint32 dwInterceptionCount = 0;
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// ******************************************************************
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// * func: EmuInitFS
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// ******************************************************************
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extern void EmuInitFS();
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__asm
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{
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mov ax, fs:[0x14]
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mov fs, ax
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}
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// ******************************************************************
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// * Every "N" interceptions, perform various periodic services
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// ******************************************************************
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if(dwInterceptionCount++ == EmuAutoSleepRate)
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{
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// If we're in the Xbox FS, wait until the next swap
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if(EmuIsXboxFS())
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{
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dwInterceptionCount--;
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return;
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}
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// Yield!
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Sleep(1);
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// Back to Zero!
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dwInterceptionCount = 0;
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}
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}
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#endif
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@ -49,6 +49,11 @@ namespace xboxkrnl
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#include <windows.h>
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#include <stdio.h>
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// ******************************************************************
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// * data: EmuAutoSleepRate
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// ******************************************************************
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uint32 EmuAutoSleepRate = -1;
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// ******************************************************************
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// * func: EmuInitFS
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// ******************************************************************
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