ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumresolv-newwith_gc
Last change
on this file since e5d4e5c was
728df66,
checked in by Peter A. Buhr <pabuhr@…>, 7 years ago
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more documentation name changes
|
-
Property mode set to
100644
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File size:
1.1 KB
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Rev | Line | |
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[9c14ae9] | 1 | struct memory_pool { |
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| 2 | char * start; |
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| 3 | char * cur; |
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| 4 | size_t size; |
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| 5 | char * free; |
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| 6 | }; |
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| 7 | |
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| 8 | void ?{}(memory_pool * pool, size_t size) { |
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| 9 | pool->[start, cur] = malloc(size); |
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| 10 | pool->size = size; |
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| 11 | printf("initializing memory pool with size %lu at location %p\n", pool->size, pool->start); |
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| 12 | } |
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| 13 | |
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| 14 | void ^?{}(memory_pool * pool) { |
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| 15 | free(pool->start); |
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| 16 | } |
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| 17 | |
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| 18 | forall(dtype T | sized(T)) |
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| 19 | T * allocate(memory_pool * pool, unsigned int array_size = 1) { |
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| 20 | size_t size = sizeof(T) * array_size; |
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| 21 | printf("allocating block of size %lu...", size); |
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| 22 | if (pool->cur + size < pool->start + pool->size) { |
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| 23 | T * x = (T*)pool->cur; |
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| 24 | pool->cur += size; |
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| 25 | printf("success!\n"); |
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| 26 | printf("next address is %p\n", pool->cur); |
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| 27 | return x; |
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| 28 | } else { |
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| 29 | printf("failed!\n"); |
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| 30 | // fail to allocate |
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| 31 | return 0; |
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| 32 | } |
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| 33 | } |
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| 34 | |
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| 35 | struct A { |
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| 36 | int x, y, z; |
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| 37 | }; |
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| 38 | void ?{}(A * a) { |
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| 39 | a->[x,y,z] = [123, 456, 789]; |
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| 40 | } |
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| 41 | |
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| 42 | int main() { |
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| 43 | memory_pool pool = { 1024 }; |
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| 44 | |
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| 45 | int * x = allocate(&pool); |
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| 46 | A * a = allocate(&pool); |
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| 47 | A * b = allocate(&pool, 1000); |
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| 48 | a{}; |
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| 49 | printf("%p\n", x); |
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| 50 | printf("%p %d %d %d\n", a, a->[x,y,z]); |
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| 51 | } |
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