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22 lines
870 B
22 lines
870 B
define: DUK_OPT_EXTSTR_FREE
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introduced: 1.1.0
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requires:
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- DUK_OPT_EXTERNAL_STRINGS
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tags:
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- memory
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- experimental
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description: >
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Optional counterpart to DUK_OPT_EXTSTR_INTERN_CHECK. Invoked when an
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external string is about to be freed by Duktape.
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The argument "ptr" is a void ptr and points to the external string data.
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Concretely, it is the (non-NULL) value returned by
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DUK_OPT_EXTSTR_INTERN_CHECK. The "udata" argument is the heap userdata
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which may be ignored if not needed.
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Also enable DUK_OPT_EXTERNAL_STRINGS to use this feature.
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NOTE: Right now there is no API to push external strings; external strings
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come into being as a result of DUK_OPT_EXTSTR_INTERN_CHECK() only. If/when
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this is changed, this hook will get called for every string, even if pushed
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by the user using an API call; this may need to be rethought at that time.
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