DC lock in CreateDIBitmap

[Uwe Bonnes]

Hallo,

with the new GDI_CheckNotLock() stuff, some application (gcprevue 9) fails
with
> err:win32:_CheckNotSysLevel Holding lock 0x4079b9e8 level 3

Backtrace is:
Backtrace:
=>0 0x400e21d1 (_CheckNotSysLevel+0x51(lock=0x4079b9e8) [syslevel.c:152] in libntdll.so) (ebp=405c6090)
  1 0x4078261c (GDI_CheckNotLock+0x1c [gdiobj.c:510] in libgdi32.so) (ebp=405c60a0)
  2 0x4077823d (CreateDCA+0x1d(driver=0x407909d3, device=0x0, output=0x0, initData=0x0, s=0x0, s=0x0, s=0x407909d3) [dc.c:558] in libgdi32.so) (ebp=405c61e8)
  3 0x4077bbc6 (CreateDIBitmap+0x166(hdc=0xdec, header=0x41eadb50, init=0x0, bits=0x0, data=0x41eadb50, coloruse=0x0) [dib.c:881] in libgdi32.so) (ebp=405c6218)
  4 0x409f9479 (X11DRV_DIB_CreateDIBSection+0x359(dc=0x404225f4, bmi=0x41eadb50, usage=0x0, bits=0x411000d8, section=0x0, offset=0x0, ovr_pitch=0x0) [dib.c:3914] in libx11drv.so) (ebp=405c62a0)
  5 0x4077bd75 (DIB_CreateDIBSection+0x65(hdc=0xdec, bmi=0x41eadb50, usage=0x0, bits=0x411000d8, section=0x0, offset=0x0, ovr_pitch=0x0) [dib.c:944] in libgdi32.so) (ebp=405c62d4)
  6 0x4077bdd1 (CreateDIBSection+0x31(hdc=0xdec, bmi=0x41eadb50, usage=0x0, bits=0x411000d8, section=0x0, offset=0x0) [dib.c:961] in libgdi32.so) (ebp=405c6304)
  7 0x00401fba (gcprevue.exe..text+0xfba in D:\cae\gcp9.0.0.8\gcprevue.exe) (ebp=ffffffff)

CreateDIBitmap is called with the HDC lock hold, and when the (fColor) clause
is true, CreateDCA() checks that the lock is not hold. A laymans approach to
release hdc before CreateDCA() and reopen it afterwards resulted in this
report asr startup, with no visual output:

fixme:win32:PE_CreateModule Security directory ignored
err:win32:_LeaveSysLevel (0x4079ba08, level 3): Invalid state: count 0 mutex (nil).
err:ntdll:RtlpWaitForCriticalSection section 0x4010fb88 "rtl.c: peb_lock" wait timed out, retrying (60 sec) fs=030f
err:ntdll:RtlpWaitForCriticalSection section 0x4010fb88 "rtl.c: peb_lock" wait timed out, retrying (60 sec) fs=031f
err:ntdll:RtlpWaitForCriticalSection section 0x4079ba08 "gdiobj.c: GDI_level" wait timed out, retrying (60 sec) fs=008f

How to cure this problem?

Bye

Uwe Bonnes                bon at elektron.ikp.physik.tu-darmstadt.de

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