Differential D3087 Diff 13847 source/scriptinterface/ScriptRuntime.h

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source/scriptinterface/ScriptRuntime.h

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	#include "ScriptTypes.h"			#include "ScriptTypes.h"
	#include "ScriptExtraHeaders.h"			#include "ScriptExtraHeaders.h"

	#include <sstream>			#include <sstream>

	#define STACK_CHUNK_SIZE 8192			#define STACK_CHUNK_SIZE 8192

				// Those are minimal defaults. The runtime for the main game is larger and GCs upon a larger growth.
				#define DEFAULT_RUNTIME_SIZE 16 * 1024 * 1024
				StanUnsubmitted Done Inline Actions constexpr? constexpr everywhere :) Stan: constexpr? constexpr everywhere :)
				#define DEFAULT_HEAP_GROWTH_BYTES_GCTRIGGER 2 * 1024 * 1024

	/**			/**
	* Abstraction around a SpiderMonkey JSRuntime.			* Abstraction around a SpiderMonkey JSRuntime.
	* Each ScriptRuntime can be used to initialize several ScriptInterface			* Each ScriptRuntime can be used to initialize several ScriptInterface
	* contexts which can then share data, but a single ScriptRuntime should			* contexts which can then share data, but a single ScriptRuntime should
	* only be used on a single thread.			* only be used on a single thread.
	*			*
	* (One means to share data between threads and runtimes is to create			* (One means to share data between threads and runtimes is to create
	* a ScriptInterface::StructuredClone.)			* a ScriptInterface::StructuredClone.)
	*/			*/

	class ScriptRuntime			class ScriptRuntime
	{			{
	public:			public:
	ScriptRuntime(shared_ptr<ScriptRuntime> parentRuntime, int runtimeSize, int heapGrowthBytesGCTrigger);			ScriptRuntime(int runtimeSize, int heapGrowthBytesGCTrigger);
	~ScriptRuntime();			~ScriptRuntime();

	/**			/**
				* Returns a runtime, which can used to initialise any number of
				* ScriptInterfaces contexts. Values created in one context may be used
				* in any other context from the same runtime (but not any other runtime).
				* Each runtime should only ever be used on a single thread.
				* @param runtimeSize Maximum size in bytes of the new runtime
				* @param heapGrowthBytesGCTrigger Size in bytes of cumulated allocations after which a GC will be triggered
				*/
				static shared_ptr<ScriptRuntime> CreateRuntime(
				int runtimeSize = DEFAULT_RUNTIME_SIZE,
				int heapGrowthBytesGCTrigger = DEFAULT_HEAP_GROWTH_BYTES_GCTRIGGER);

				/**
	* MaybeIncrementalRuntimeGC tries to determine whether a runtime-wide garbage collection would free up enough memory to			* MaybeIncrementalRuntimeGC tries to determine whether a runtime-wide garbage collection would free up enough memory to
	* be worth the amount of time it would take. It does this with our own logic and NOT some predefined JSAPI logic because			* be worth the amount of time it would take. It does this with our own logic and NOT some predefined JSAPI logic because
	* such functionality currently isn't available out of the box.			* such functionality currently isn't available out of the box.
	* It does incremental GC which means it will collect one slice each time it's called until the garbage collection is done.			* It does incremental GC which means it will collect one slice each time it's called until the garbage collection is done.
	* This can and should be called quite regularly. The delay parameter allows you to specify a minimum time since the last GC			* This can and should be called quite regularly. The delay parameter allows you to specify a minimum time since the last GC
	* in seconds (the delay should be a fraction of a second in most cases though).			* in seconds (the delay should be a fraction of a second in most cases though).
	* It will only start a new incremental GC or another GC slice if this time is exceeded. The user of this function is			* It will only start a new incremental GC or another GC slice if this time is exceeded. The user of this function is
	* responsible for ensuring that GC can run with a small enough delay to get done with the work.			* responsible for ensuring that GC can run with a small enough delay to get done with the work.
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