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Prepped for #160, fixed a stack-shrink bug

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This commit is contained in:
Kayne Ruse
2024-12-17 21:18:45 +11:00
parent a28053d4e9
commit 3e17916a4a
9 changed files with 55 additions and 54 deletions
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20
source/toy_array.h
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@@ -21,26 +21,6 @@ TOY_API Toy_Array* Toy_resizeArray(Toy_Array* array, unsigned int capacity);
#define TOY_ARRAY_EXPANSION_RATE 2
#endif
//quick allocate
#ifndef TOY_ARRAY_ALLOCATE
#define TOY_ARRAY_ALLOCATE() Toy_resizeArray(NULL, TOY_ARRAY_INITIAL_CAPACITY)
#endif
//quick free
#ifndef TOY_ARRAY_FREE
#define TOY_ARRAY_FREE(array) (array = Toy_resizeArray(array, 0))
#endif
//one line to expand the array
#ifndef TOY_ARRAY_EXPAND
#define TOY_ARRAY_EXPAND(array) (array = (array != NULL && (array)->count + 1 > (array)->capacity ? Toy_resizeArray(array, (array)->capacity * TOY_ARRAY_EXPANSION_RATE) : array))
#endif
//quick push back
#ifndef TOY_ARRAY_PUSHBACK
#define TOY_ARRAY_PUSHBACK(array, value) (TOY_ARRAY_EXPAND(array), (array)->data[(array)->count++] = (value))
#endif
//TODO: array.getLength()
//TODO: array.pushFront(x)
//TODO: array.pushBack(x)

8
source/toy_stack.c
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@@ -31,7 +31,7 @@ void Toy_freeStack(Toy_Stack* stack) {
void Toy_pushStack(Toy_Stack** stackHandle, Toy_Value value) {
//don't go overboard
if ((*stackHandle)->count >= TOY_STACK_OVERFLOW) {
if ((*stackHandle)->count >= TOY_STACK_OVERFLOW_THRESHOLD) {
fprintf(stderr, TOY_CC_ERROR "ERROR: Stack overflow\n" TOY_CC_RESET);
exit(-1);
}
@@ -72,9 +72,9 @@ Toy_Value Toy_popStack(Toy_Stack** stackHandle) {
}
//shrink if possible
if ((*stackHandle)->count > TOY_STACK_INITIAL_CAPACITY && (*stackHandle)->count < (*stackHandle)->capacity * TOY_STACK_CONTRACTION_THRESHOLD) {
(*stackHandle)->capacity /= 2;
unsigned int newCapacity = (*stackHandle)->capacity;
if ((*stackHandle)->capacity > TOY_STACK_INITIAL_CAPACITY && (*stackHandle)->count <= (*stackHandle)->capacity / TOY_STACK_CONTRACTION_THRESHOLD) {
(*stackHandle)->capacity /= TOY_STACK_CONTRACTION_THRESHOLD;
unsigned int newCapacity = (*stackHandle)->capacity; //cache for the msg
(*stackHandle) = realloc((*stackHandle), (*stackHandle)->capacity * sizeof(Toy_Value) + sizeof(Toy_Stack));

6
source/toy_stack.h
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@@ -26,10 +26,10 @@ TOY_API Toy_Value Toy_popStack(Toy_Stack** stackHandle);
#endif
#ifndef TOY_STACK_CONTRACTION_THRESHOLD
#define TOY_STACK_CONTRACTION_THRESHOLD (1 / 4)
#define TOY_STACK_CONTRACTION_THRESHOLD 4 // this integer means 'shrink when count drops below one-forth of capacity'
#endif
//prevent an infinite expansion, limited to 1MB
#ifndef TOY_STACK_OVERFLOW
#define TOY_STACK_OVERFLOW (1024 * 1024 / sizeof(Toy_Value))
#ifndef TOY_STACK_OVERFLOW_THRESHOLD
#define TOY_STACK_OVERFLOW_THRESHOLD (1024 * 1024 / sizeof(Toy_Value) - sizeof(Toy_Stack))
#endif

2
source/toy_table.c
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@@ -107,7 +107,7 @@ void Toy_insertTable(Toy_Table** tableHandle, Toy_Value key, Toy_Value value) {
}
//expand the capacity
if ((*tableHandle)->count > (*tableHandle)->capacity * TOY_TABLE_EXPANSION_THRESHOLD) {
if ((*tableHandle)->count >= (*tableHandle)->capacity * TOY_TABLE_EXPANSION_THRESHOLD) {
(*tableHandle) = Toy_private_adjustTableCapacity((*tableHandle), (*tableHandle)->capacity * TOY_TABLE_EXPANSION_RATE);
}

4
source/toy_table.h
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@@ -38,7 +38,7 @@ TOY_API Toy_Table* Toy_private_adjustTableCapacity(Toy_Table* oldTable, unsigned
#define TOY_TABLE_EXPANSION_RATE 2
#endif
//expand when the contents passes a certain percentage of the capacity
//expand when the contents passes a certain percentage (80%) of the capacity
#ifndef TOY_TABLE_EXPANSION_THRESHOLD
#define TOY_TABLE_EXPANSION_THRESHOLD 0.8
#define TOY_TABLE_EXPANSION_THRESHOLD 0.8f
#endif

2
source/toy_value.c
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@@ -139,7 +139,7 @@ void Toy_freeValue(Toy_Value value) {
Toy_freeValue(ptr->data[i]);
}
TOY_ARRAY_FREE(ptr);
Toy_resizeArray(ptr, 0);
break;
}