Mercurial > sdl-ios-xcode
view docs/man3/SDL_SemValue.3 @ 852:2651b6b43840
Quartz fix:
ut2004 makes a 2D window for the splash screen, which sets the screen
surface's pixels field. Then we tear down that video mode and create a GL
context, and the Quartz target isn't resetting the pixels field to NULL.
When you just create a GL window, the structure is memset'd to zero the
first time through, so unless you hit ut2004's codepath, you won't see the
bug. :)
Without this patch, quitting a windowed ut2003/ut2004 game makes the OS dump a
warning about a bogus free() to stderr, but it doesn't actually crash. All we
need to do is explicitly initialize the current->pixels field.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Tue, 24 Feb 2004 06:53:22 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
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.TH "SDL_SemValue" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" .SH "NAME" SDL_SemValue\- Return the current value of a semaphore\&. .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" #include "SDL/SDL_thread\&.h" .sp \fBUint32 \fBSDL_SemValue\fP\fR(\fBSDL_sem *sem\fR); .SH "DESCRIPTION" .PP \fBSDL_SemValue()\fP returns the current semaphore value from the semaphore pointed to by \fBsem\fR\&. .SH "RETURN VALUE" .PP Returns current value of the semaphore\&. .SH "EXAMPLES" .PP .PP .nf \f(CW sem_value = SDL_SemValue(my_sem);\fR .fi .PP .SH "SEE ALSO" .PP \fI\fBSDL_CreateSemaphore\fP\fR, \fI\fBSDL_DestroySemaphore\fP\fR, \fI\fBSDL_SemWait\fP\fR, \fI\fBSDL_SemTryWait\fP\fR, \fI\fBSDL_SemWaitTimeout\fP\fR, \fI\fBSDL_SemPost\fP\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00