Fix T37898: blenderplayer painfully slow in recent builds

Issue was caused by recent image cache rewrite and root of
the issue goes to the fact that blender player doesn't
initialize cache limiter and it uses 32meg of memory only.

This leads to infinite image loading/freeing.

For now disabled cache limiter in game engine, this brings
back old behavior.

In theory we might be smarter here, but better caching
policy is to be discussed.

3 files changed, 21 insertions, 0 deletions

diff --git a/intern/memutil/MEM_CacheLimiter.h b/intern/memutil/MEM_CacheLimiter.h
index 88e06833b4a..bbe6ace2456 100644
--- a/intern/memutil/MEM_CacheLimiter.h
+++ b/intern/memutil/MEM_CacheLimiter.h
@@ -69,6 +69,8 @@ class MEM_CacheLimiter;
 extern "C" {
 	void MEM_CacheLimiter_set_maximum(size_t m);
 	size_t MEM_CacheLimiter_get_maximum();
+	void MEM_CacheLimiter_set_disabled(bool disabled);
+	bool MEM_CacheLimiter_is_disabled(void);
 };
 #endif
 
@@ -177,8 +179,13 @@ public:
 
 	void enforce_limits() {
 		size_t max = MEM_CacheLimiter_get_maximum();
+		bool is_disabled = MEM_CacheLimiter_is_disabled();
 		size_t mem_in_use, cur_size;
 
+		if (is_disabled) {
+			return;
+		}
+
 		if (max == 0) {
 			return;
 		}
diff --git a/intern/memutil/MEM_CacheLimiterC-Api.h b/intern/memutil/MEM_CacheLimiterC-Api.h
index a6a3ec85777..ce7782e3183 100644
--- a/intern/memutil/MEM_CacheLimiterC-Api.h
+++ b/intern/memutil/MEM_CacheLimiterC-Api.h
@@ -53,6 +53,8 @@ typedef bool (*MEM_CacheLimiter_ItemDestroyable_Func) (void*);
 #ifndef __MEM_CACHELIMITER_H__
 void MEM_CacheLimiter_set_maximum(size_t m);
 size_t MEM_CacheLimiter_get_maximum(void);
+void MEM_CacheLimiter_set_disabled(bool disabled);
+bool MEM_CacheLimiter_is_disabled(void);
 #endif /* __MEM_CACHELIMITER_H__ */
 
 /**
diff --git a/intern/memutil/intern/MEM_CacheLimiterC-Api.cpp b/intern/memutil/intern/MEM_CacheLimiterC-Api.cpp
index 6156b511f01..f6f1fe419d4 100644
--- a/intern/memutil/intern/MEM_CacheLimiterC-Api.cpp
+++ b/intern/memutil/intern/MEM_CacheLimiterC-Api.cpp
@@ -29,6 +29,8 @@
 #include "MEM_CacheLimiter.h"
 #include "MEM_CacheLimiterC-Api.h"
 
+static bool is_disabled = false;
+
 static size_t & get_max()
 {
 	static size_t m = 32 * 1024 * 1024;
@@ -45,6 +47,16 @@ size_t MEM_CacheLimiter_get_maximum()
 	return get_max();
 }
 
+void MEM_CacheLimiter_set_disabled(bool disabled)
+{
+	is_disabled = disabled;
+}
+
+bool MEM_CacheLimiter_is_disabled(void)
+{
+	return is_disabled;
+}
+
 class MEM_CacheLimiterHandleCClass;
 class MEM_CacheLimiterCClass;