fix: fix memory allocation blocking on Mac (#151)

* fix memory allocation blocking on Mac by checking the used memory against the total RAM
* Update DLL/Bundle

Others:
* Don't copy/deploy DLL/Bundle file if we are building unit tests

(cherry picked from commit 5c68824)

Plugins~/Build/cmake_modules/AddPlugin.cmake

@@ -18,8 +18,8 @@ function(add_plugin name)
         set_target_properties(${name} PROPERTIES PREFIX "")
     endif()
 
-    if(ENABLE_DEPLOY)
-              
+    # Don't deploy if we are building unit tests
+    if(ENABLE_DEPLOY AND NOT BUILD_UNIT_TESTS)     
         if(WIN32) 
 
             # Win: Visual Studio Settings

Plugins~/Src/Loader/ImageMemoryAllocator.cpp

@@ -13,9 +13,10 @@ const uint64_t DEFAULT_MAX_MEMORY = UNLIMITED_MEMORY;
 
 ImageMemoryAllocator::ImageMemoryAllocator() : m_usedMemory(0)
     , m_maxMemory(DEFAULT_MAX_MEMORY)
+    , m_totalRAM(MemoryUtility::GetTotalRAM())
     , m_inverseTotalRAM(1.0f / MemoryUtility::GetTotalRAM())
 {
-#ifdef MAX_IMAGE_MEMORY
+#ifdef MAX_IMAGE_MEMORY //overwrite for testing
     m_maxMemory = MAX_IMAGE_MEMORY;
 #endif
 
@@ -35,12 +36,19 @@ bool ImageMemoryAllocator::Allocate(uint8_t ** rawDataPtr, const uint32_t w, con
     if (m_maxMemory != UNLIMITED_MEMORY && (m_usedMemory + dataSize) > m_maxMemory)
         return false;
 
-    const float MIN_AVAILABLE_RAM_RATIO = 0.1f;
+#if OSX
+    //Mac (10.9+) compresses inactive memory automatically to free memory to be used by other application, and therefore
+    //we can't directly use the amount of free RAM returned by the OS (the value is often near zero).
+    //For now, we simply check if the number of used memory has exceeded the total RAM.
+    if (m_usedMemory + dataSize > m_totalRAM)
+        return false;
 
+#else
+    const float MIN_AVAILABLE_RAM_RATIO = 0.1f;
     const float availableRAMRatio = MemoryUtility::GetAvailableRAM() * m_inverseTotalRAM;
     if (availableRAMRatio <= MIN_AVAILABLE_RAM_RATIO)
         return false;
-
+#endif
 
     uint8_t*  buffer = static_cast<uint8_t*>(malloc(dataSize));
     if (nullptr == buffer) {

Plugins~/Src/Loader/ImageMemoryAllocator.h

@@ -28,6 +28,7 @@ class ImageMemoryAllocator {
 
     uint64_t m_usedMemory;
     uint64_t m_maxMemory;
+    float m_totalRAM;
     float m_inverseTotalRAM;
 
 };

Runtime/Plugins/OSX/Loader.bundle/Contents/Info.plist

@@ -3,7 +3,7 @@
 <plist version="1.0">
 <dict>
 	<key>BuildMachineOSBuild</key>
-	<string>18G5033</string>
+	<string>19G73</string>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>English</string>
 	<key>CFBundleExecutable</key>
@@ -27,17 +27,17 @@
 	<key>DTCompiler</key>
 	<string>com.apple.compilers.llvm.clang.1_0</string>
 	<key>DTPlatformBuild</key>
-	<string>11C504</string>
+	<string>11E708</string>
 	<key>DTPlatformVersion</key>
 	<string>GM</string>
 	<key>DTSDKBuild</key>
-	<string>19B90</string>
+	<string>19G68</string>
 	<key>DTSDKName</key>
 	<string>macosx10.15</string>
 	<key>DTXcode</key>
-	<string>1131</string>
+	<string>1160</string>
 	<key>DTXcodeBuild</key>
-	<string>11C504</string>
+	<string>11E708</string>
 	<key>LSMinimumSystemVersion</key>
 	<string>10.12</string>
 	<key>NSHumanReadableCopyright</key>