Check count > 0 not != 0 in Resource acquisition.

On low-resolution Android Emulator AVDs run with -gpu swiftshader_indirect, it's possible to run fast enough to see count == -1 on Resource acquisition. Check for that. bug: 70950184 Test: API 27 Chrome is usable on a 480x800 or smaller device Change-Id: I4f4cf9cd0ab1bc2bce846f0af6ffbbe243bc1a96 Reviewed-on: https://swiftshader-review.googlesource.com/15508Reviewed-by: Lingfeng Yang <lfy@google.com> Reviewed-by: Nicolas Capens <nicolascapens@google.com> Tested-by: Lingfeng Yang <lfy@google.com>

Check count > 0 not != 0 in Resource acquisition.
2693e753 · Lingfeng Yang · 74384981 · 2693e753
Commit 2693e753 authored Dec 22, 2017 by Lingfeng Yang
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Resource.cpp src/Common/Resource.cpp +2 -2

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--- a/src/Common/Resource.cpp
+++ b/src/Common/Resource.cpp
@@ -38,7 +38,7 @@ namespace sw
 	{
 		criticalSection.lock();

-		while(count != 0 && accessor != claimer)
+		while(count > 0 && accessor != claimer)
 		{
 			blocked++;
 			criticalSection.unlock();
@@ -84,7 +84,7 @@ namespace sw
 		}

 		// Acquire
-		while(count != 0 && accessor != claimer)
+		while(count > 0 && accessor != claimer)
 		{
 			blocked++;
 			criticalSection.unlock();