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Introduce SetExtraMarkFuncBags #2706

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Aug 16, 2018
Merged

Introduce SetExtraMarkFuncBags #2706

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9 changes: 7 additions & 2 deletions src/gasman.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1127,12 +1127,17 @@ void FinishBags( void )
** in global variables. It also allocates the initial workspace, and sets up
** the linked list of available masterpointer.
*/
TNumExtraMarkFuncBags ExtraMarkFuncBags;

static Bag * StackBottomBags;

static UInt StackAlignBags;

static TNumExtraMarkFuncBags ExtraMarkFuncBags;
void SetExtraMarkFuncBags(TNumExtraMarkFuncBags func)
{
ExtraMarkFuncBags = func;
}


void InitBags (
UInt initial_size,
Bag * stack_bottom,
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8 changes: 6 additions & 2 deletions src/gasman.h
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Expand Up @@ -1003,6 +1003,12 @@ extern void InitCollectFuncBags (
TNumCollectFuncBags after_func );
#endif

// ExtraMarkFuncBags, if not NULL, is called during garbage collection
// This is used for integrating GAP (possibly linked as a shared library) with
// other code bases which use their own form of garbage collection. For
// example, with Python (for SageMath).
typedef void (*TNumExtraMarkFuncBags)(void);
extern void SetExtraMarkFuncBags(TNumExtraMarkFuncBags func);

/****************************************************************************
**
Expand Down Expand Up @@ -1030,8 +1036,6 @@ extern void InitCollectFuncBags (
** only be at addresses that are a multiple of 'sizeof(Bag)'. This value
** depends on the machine, the operating system, and the compiler.
*/
typedef void (*TNumExtraMarkFuncBags)(void);

extern void InitBags(UInt initialSize, Bag * stackStart, UInt stackAlign);

/****************************************************************************
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