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Add SDL_cond implementation using Windows Condition Variables

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Is automatically used when the SRW SDL_mutex implementation is active.
Otherwise falls back to the generic implementation.

v2: - Rebase onto master fa3ea1051a4b
This commit is contained in:
Joel Linn 2020-12-28 11:43:11 -08:00
parent 2443e51e0e
commit 8fc0baad98
10 changed files with 254 additions and 33 deletions
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3
include/SDL_hints.h
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@ -1202,6 +1202,9 @@ extern "C" {
* They offer better performance, allocate no kernel ressources and
* use less memory. SDL will fall back to Critical Sections on older
* OS versions or if forced to by this hint.
* This also affects Condition Variables. When SRW mutexes are used,
* SDL will use Windows Condition Variables as well. Else, a generic
* SDL_cond implementation will be used that works with all mutexes.
*
* This variable can be set to the following values:
* "0" - Use SRW Locks when available. If not, fall back to Critical Sections. (default)